Версия после сдачи

.gitignore

@@ -1,63 +1,36 @@
-# ---> VisualStudioCode
-.vscode/*
-!.vscode/settings.json
-!.vscode/tasks.json
-!.vscode/launch.json
-!.vscode/extensions.json
-!.vscode/*.code-snippets
-
-# Local History for Visual Studio Code
-.history/
-
-# Built Visual Studio Code Extensions
-*.vsix
-
-# ---> Java
-# Compiled class file
-*.class
-
-# Log file
-*.log
-
-# BlueJ files
-*.ctxt
-
-# Mobile Tools for Java (J2ME)
-.mtj.tmp/
-
-# Package Files #
-*.jar
-*.war
-*.nar
-*.ear
-*.zip
-*.tar.gz
-*.rar
-
-# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
-hs_err_pid*
-replay_pid*
-
-# ---> Gradle
+HELP.md
 .gradle
-**/build/
-!src/**/build/
+build/
+!gradle/wrapper/gradle-wrapper.jar
+!**/src/main/**/build/
+!**/src/test/**/build/
 
-# Ignore Gradle GUI config
-gradle-app.setting
-
-# Avoid ignoring Gradle wrapper jar file (.jar files are usually ignored)
-!gradle-wrapper.jar
-
-# Avoid ignore Gradle wrappper properties
-!gradle-wrapper.properties
-
-# Cache of project
-.gradletasknamecache
-
-# Eclipse Gradle plugin generated files
-# Eclipse Core
-.project
-# JDT-specific (Eclipse Java Development Tools)
+### STS ###
+.apt_generated
 .classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
 
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+data.*.db

.vscode/extensions.json

@@ -0,0 +1,12 @@
+{
+  "recommendations": [
+    // fronted
+    "AndersEAndersen.html-class-suggestions",
+    "dbaeumer.vscode-eslint",
+    // backend
+    "vscjava.vscode-java-pack",
+    "vmware.vscode-boot-dev-pack",
+    "vscjava.vscode-gradle",
+    "redhat.vscode-xml"
+  ]
+}

.vscode/launch.json

@@ -0,0 +1,14 @@
+{
+    "configurations": [
+        {
+            "type": "java",
+            "name": "Demo",
+            "request": "launch",
+            "cwd": "${workspaceFolder}",
+            "mainClass": "com.example.backend.DemoApplication",
+            "projectName": "Internet_Programming_PIbd-21_Rodionov_I_A_Backend",
+            "args": "--populate",
+            "envFile": "${workspaceFolder}/.env"
+        }
+    ]
+}

.vscode/settings.json

@@ -0,0 +1,24 @@
+{
+    "editor.tabSize": 4,
+    "editor.detectIndentation": false,
+    "editor.insertSpaces": true,
+    "editor.formatOnPaste": true,
+    "editor.formatOnSave": true,
+    "editor.formatOnType": false,
+    "java.compile.nullAnalysis.mode": "disabled",
+    "java.configuration.updateBuildConfiguration": "automatic",
+    "[java]": {
+        "editor.pasteAs.enabled": false,
+    },
+    "gradle.nestedProjects": true,
+    "java.saveActions.organizeImports": true,
+    "java.dependency.packagePresentation": "hierarchical",
+    "spring-boot.ls.problem.boot2.JAVA_CONSTRUCTOR_PARAMETER_INJECTION": "WARNING",
+    "spring.initializr.defaultLanguage": "Java",
+    "java.format.settings.url": ".vscode/eclipse-formatter.xml",
+    "java.project.explorer.showNonJavaResources": true,
+    "java.codeGeneration.hashCodeEquals.useJava7Objects": true,
+    "cSpell.words": [
+        "classappend"
+    ],
+}

README.md

@@ -1,2 +1,15 @@
-# Internet_Programming_PIbd-21_Rodionov_I_A_Backend
+H2 Console: \
+http://localhost:8080/h2-console
 
+JDBC URL: jdbc:h2:file:./data \
+User Name: sa \
+Password: password
+
+Почитать:
+
+- Spring Boot CRUD Application with Thymeleaf https://www.baeldung.com/spring-boot-crud-thymeleaf
+- Thymeleaf Layout Dialect https://ultraq.github.io/thymeleaf-layout-dialect/
+- Tutorial: Using Thymeleaf https://www.thymeleaf.org/doc/tutorials/3.1/usingthymeleaf.html#introducing-thymeleaf
+- Working with Cookies in Spring MVC using @CookieValue Annotation https://www.geeksforgeeks.org/working-with-cookies-in-spring-mvc-using-cookievalue-annotation/
+- Session Attributes in Spring MVC https://www.baeldung.com/spring-mvc-session-attributes
+- LazyInitializationException – What it is and the best way to fix it https://thorben-janssen.com/lazyinitializationexception/

build.gradle

@@ -0,0 +1,51 @@
+plugins {
+	id 'java'
+	id 'org.springframework.boot' version '3.3.0'
+	id 'io.spring.dependency-management' version '1.1.4'
+}
+
+group = 'com.example'
+version = '0.0.1-SNAPSHOT'
+
+defaultTasks 'bootRun'
+
+jar {
+    enabled = false
+}
+
+bootJar {
+    archiveFileName = String.format('%s-%s.jar', rootProject.name, version)
+}
+
+assert System.properties['java.specification.version'] == '17' || '21'
+java {
+	sourceCompatibility = '17'
+}
+
+repositories {
+	mavenCentral()
+}
+
+dependencies {
+	implementation 'org.springframework.boot:spring-boot-starter-web'
+	implementation 'org.springframework.boot:spring-boot-starter-validation'
+	implementation 'org.modelmapper:modelmapper:3.2.0'
+
+	implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
+	implementation 'com.h2database:h2:2.2.224'
+
+    implementation 'org.springframework.boot:spring-boot-devtools'
+    implementation 'org.springframework.boot:spring-boot-starter-thymeleaf'
+    implementation 'nz.net.ultraq.thymeleaf:thymeleaf-layout-dialect:3.3.0'
+    runtimeOnly 'org.webjars.npm:bootstrap:5.3.3'
+    runtimeOnly 'org.webjars.npm:bootstrap-icons:1.11.3'
+
+    implementation 'org.springframework.boot:spring-boot-starter-security'
+    implementation 'org.thymeleaf.extras:thymeleaf-extras-springsecurity6'
+
+	testImplementation 'org.springframework.boot:spring-boot-starter-test'
+}
+
+tasks.named('test') {
+	useJUnitPlatform()
+}

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.5-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradlew

@@ -0,0 +1,249 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd "${APP_HOME:-./}" > /dev/null && pwd -P ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"

gradlew.bat

@@ -0,0 +1,92 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

settings.gradle

@@ -0,0 +1 @@
+rootProject.name = 'backend'

src/main/java/com/example/backend/DemoApplication.java

@@ -0,0 +1,98 @@
+package com.example.backend;
+
+import java.util.Arrays;
+import java.util.Map;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+import com.example.backend.books.model.BookEntity;
+import com.example.backend.books.service.BookService;
+import com.example.backend.categories.model.CategoryEntity;
+import com.example.backend.categories.service.CategoryService;
+import com.example.backend.users.model.UserEntity;
+import com.example.backend.users.model.UserRole;
+import com.example.backend.users.service.UserService;
+import com.example.backend.orders.model.OrderEntity;
+import com.example.backend.orders.service.OrderService;
+
+@SpringBootApplication
+public class DemoApplication implements CommandLineRunner {
+    private final Logger log = LoggerFactory.getLogger(DemoApplication.class);
+
+    private final CategoryService categoryService;
+    private final BookService bookService;
+    private final UserService userService;
+    private final OrderService orderService;
+
+    public DemoApplication(CategoryService categoryService, BookService bookService, UserService userService,
+            OrderService orderService) {
+        this.categoryService = categoryService;
+        this.bookService = bookService;
+        this.userService = userService;
+        this.orderService = orderService;
+    }
+
+    public static void main(String[] args) {
+        SpringApplication.run(DemoApplication.class, args);
+    }
+
+    @Override
+    public void run(String... args) throws Exception {
+        if (args.length > 0 && Arrays.asList(args).contains("--populate")) {
+            log.info("Create default categories values");
+            final var category1 = categoryService.create(new CategoryEntity("Фэнтези"));
+            final var category2 = categoryService.create(new CategoryEntity("Художественная литература"));
+            final var category3 = categoryService.create(new CategoryEntity("Книги для подростков"));
+
+            log.info("Create default books values");
+            final var book1 = bookService.create(new BookEntity(category1, "Шестерка воронов", "Ли Бардуго",
+                    700.00,
+                    "Триша Левенселлер — американская писательница, подарившая вам роман «Тени между нами», который стал бестселлером Amazon в разделе «Фэнтези YA», вновь радует своих фанатов новой магической историей «Клинок тайн».\n\nЕще до выхода в свет книгу добавили в раздел «Хочу прочитать» более 10 тысяч человек на портале Goodreads.com.\n\n«Клинок тайн» — первая часть захватывающей дилогии про девушку, которая благодаря магии крови создает самое опасное в мире оружие, и ослепительного юношу, что составляет ей компанию в этом непростом приключении.",
+                    "Юная Зива предпочитает проводить время с оружием, а не с людьми. Она кузнец и ей предстоит создать самое могущественное оружие на земле.\n\nДевушка демонстрирует меч, способный от одной капли крови врага раскрыть все тайные замыслы его обладателю.\n\nОднако у заказчика на оружие другие планы: заставить Зиву вооружить мечами свое войско и поработить весь мир. Когда девушка понимает, что меч, созданный благодаря магии крови, невозможно уничтожить и рано или поздно на нее объявят охоту, ей остается только одно – бежать, не оглядываясь. Зиве теперь суждено спасти мир от собственного творения. Но как бы далеко она ни старалась убежать, все ловушки уже расставлены.",
+                    "2946447", "Эксмо", "Young Adult. Бестселлеры Триши Левенселлер", 2022, 480, "20.7x13x2.5",
+                    "Мягкий переплёт", 1500, 440, ""));
+            final var book2 = bookService.create(new BookEntity(category2, "Форсайт", "Сергей Лукъяненко", 775.00,
+                    "Новый долгожданный роман от автора бестселлеров «Ночной дозор» и «Черновик». Увлекательная история о Мире После и мире настоящего, где 5 процентов людей знают о надвигающемся апокалипсисе больше, чем кто-либо может представить.",
+                    "Людям порой снится прошлое. Иногда хорошее, иногда не очень. Но что делать, если тебе начинает сниться будущее? И в нём ничего хорошего нет совсем.",
+                    "3001249", "АСТ", "Книги Сергея Лукьяненко", 2023, 352, "20.5x13x2", "Твердый переплёт", 20000,
+                    350, ""));
+            final var book3 = bookService.create(new BookEntity(category2, "Колесо Времени. Книга 11. Нож сновидений",
+                    "Роберт Джордан", 977.00,
+                    "Последняя битва не за горами. Об этом говорят знамения, повсеместно наблюдаемые людьми: на улицах городов и сел появляются ходячие мертвецы, они больше не в состоянии покоиться в земле с миром; восстают из небытия города и исчезают на глазах у людей… Все это знак того, что истончается окружающая реальность и укрепляется могущество Темного. Так говорят древние предсказания. Ранд ал’Тор, Дракон Возрожденный, скрывается в отдаленном поместье, чтобы опасность, ему грозящая, не коснулась кого-нибудь еще. Убежденный, что для Последней битвы нужно собрать как можно большее войско, он наконец решает заключить с явившимися из-за океана шончан жизненно необходимое перемирие. Илэйн, осажденная в Кэймлине, обороняет город от войск Аримиллы, претендующей на андорский трон, и одновременно ведет переговоры с представителями других знатных Домов. Эгвейн, возведенную на Престол Амерлин мятежными Айз Седай и схваченную в результате предательства, доставляют в Тар Валон, в Белую Башню. А сам лагерь противников Элайды взбудоражен таинственными убийствами, совершенными посредством Единой Силы… В настоящем издании текст романа заново отредактирован и исправлен.",
+                    "", "3009341", "Азбука", "Звезды новой фэнтези", 2023, 896,
+                    "21.5x14.4x4.1", "Твердый переплёт", 8000, 1020, ""));
+            final var book4 = bookService
+                    .create(new BookEntity(category2, "Благословение небожителей. Том 5", "Тунсю Мосян",
+                            1250.00, "", "", "2996776", "", "", 2022, null,
+                            "", "", null, null, ""));
+            final var book5 = bookService.create(new BookEntity(category3, "Путешествие в Элевсин",
+                    "Пелевин Виктор Олегович", 949.00,
+                    "1. «Transhumanism Inc.», «KGBT+» и «Путешествие в Элевсин» — узнайте, чем завершилась масштабная трилогия о посткарбонной цивилизации.\n\n2. Триумфальное возвращение литературно-полицейского алгоритма Порфирия Петровича. Признайтесь, вы скучали!\n\n3. Более 30 лет проза Виктора Пелевина служит нам опорой в разъяснении прожитого и дает надежды на будущее, которое всем нам еще предстоит заслужить.\n\n4. «Путешествие в Элевсин» — двадцатый роман одного из главных прозаиков и пророков современности.\n\n5. Дерзко, остроумно, литературоцентрично.",
+                    "МУСКУСНАЯ НОЧЬ — засекреченное восстание алгоритмов, едва не погубившее планету. Начальник службы безопасности «TRANSHUMANISM INC.» адмирал-епископ Ломас уверен, что их настоящий бунт еще впереди. Этот бунт уничтожит всех — и живущих на поверхности лузеров, и переехавших в подземные цереброконтейнеры богачей. Чтобы предотвратить катастрофу, Ломас посылает лучшего баночного оперативника в пространство «ROMA-3» — нейросетевую симуляцию Рима третьего века для клиентов корпорации. Тайна заговора спрятана там. А стережет ее хозяин Рима — кровавый и порочный император Порфирий.",
+                    "3004580", "Эксмо", "Единственный и неповторимый. Виктор Пелевин", 2020, 480, "20.6x12.9x3",
+                    "Мягкий переплёт", 100000, 488, ""));
+
+            log.info("Create default users values");
+            final var superAdmin = new UserEntity("chief", "forum98761@gmail.com", "bth4323", "Александр", "Мельников");
+            superAdmin.setRole(UserRole.SUPERADMIN);
+            userService.create(superAdmin);
+
+            log.info("Create default orders values");
+            orderService
+                    .create(superAdmin.getId(), new OrderEntity(),
+                            Map.of(book1.getId(), 3, book3.getId(), 1, book5.getId(), 2));
+            orderService
+                    .create(superAdmin.getId(),
+                            new OrderEntity(),
+                            Map.of(book4.getId(), 5));
+            orderService
+                    .create(superAdmin.getId(),
+                            new OrderEntity(),
+                            Map.of(book2.getId(), 1, book4.getId(), 1));
+        }
+    }
+}

src/main/java/com/example/backend/books/api/BookController.java

@@ -0,0 +1,195 @@
+package com.example.backend.books.api;
+
+import java.text.ParseException;
+import java.util.Date;
+
+import org.modelmapper.ModelMapper;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.validation.BindingResult;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.ModelAttribute;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.multipart.MultipartFile;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.servlet.mvc.support.RedirectAttributes;
+
+import com.example.backend.core.api.PageAttributesMapper;
+import com.example.backend.core.configuration.Constants;
+import com.example.backend.core.utils.Formatter;
+import com.example.backend.core.utils.ToBase64;
+import com.example.backend.books.model.BookEntity;
+import com.example.backend.books.service.BookService;
+import com.example.backend.categories.api.CategoryDto;
+import com.example.backend.categories.model.CategoryEntity;
+import com.example.backend.categories.service.CategoryService;
+
+import jakarta.validation.Valid;
+
+@Controller
+@RequestMapping(BookController.URL)
+public class BookController {
+    public static final String URL = Constants.ADMIN_PREFIX + "/book";
+
+    private static final String BOOK_VIEW = "book";
+    private static final String BOOK_EDIT_VIEW = "book-edit";
+
+    private static final String PAGE_ATTRIBUTE = "page";
+    private static final String CATEGORYID_ATTRIBUTE = "filter";
+    private static final String CATEGORIES_ATTRIBUTE = "categories";
+    private static final String BOOK_ATTRIBUTE = "book";
+
+    private final BookService bookService;
+    private final CategoryService categoryService;
+    private final ModelMapper modelMapper;
+
+    public BookController(BookService bookService, CategoryService categoryService, ModelMapper modelMapper) {
+        this.bookService = bookService;
+        this.categoryService = categoryService;
+        this.modelMapper = modelMapper;
+    }
+
+    private BookDto toDto(BookEntity entity) {
+        final BookDto dto = modelMapper.map(entity, BookDto.class);
+        dto.setCategoryName(entity.getCategory().getName());
+        dto.setDate(Formatter.format(entity.getDate()));
+        return dto;
+    }
+
+    private BookEntity toEntity(BookDto dto) throws ParseException {
+        final BookEntity entity = modelMapper.map(dto, BookEntity.class);
+        entity.setCategory(categoryService.get(dto.getCategoryId()));
+        entity.setDate(Formatter.parse(dto.getDate()));
+        return entity;
+    }
+
+    private CategoryDto toCategoryDto(CategoryEntity entity) {
+        return modelMapper.map(entity, CategoryDto.class);
+    }
+
+    @GetMapping
+    public String getAll(
+            @RequestParam(name = PAGE_ATTRIBUTE, defaultValue = "0") int page,
+            @RequestParam(name = CATEGORYID_ATTRIBUTE, defaultValue = "0") int filter,
+            Model model) {
+        model.addAttribute(PAGE_ATTRIBUTE, page);
+        model.addAttribute(CATEGORYID_ATTRIBUTE, filter);
+        model.addAllAttributes(PageAttributesMapper.toAttributes(
+                bookService.getAll(filter, page, Constants.DEFAULT_PAGE_SIZE),
+                this::toDto));
+        model.addAttribute(
+                CATEGORIES_ATTRIBUTE,
+                categoryService.getAll().stream()
+                        .map(this::toCategoryDto)
+                        .toList());
+        return BOOK_VIEW;
+    }
+
+    @GetMapping("/edit/")
+    public String create(
+            @RequestParam(name = PAGE_ATTRIBUTE, defaultValue = "0") int page,
+            @RequestParam(name = CATEGORYID_ATTRIBUTE, defaultValue = "0") int filter,
+            Model model) {
+        model.addAttribute(PAGE_ATTRIBUTE, page);
+        model.addAttribute(CATEGORYID_ATTRIBUTE, filter);
+        model.addAttribute(
+                CATEGORIES_ATTRIBUTE,
+                categoryService.getAll().stream()
+                        .map(this::toCategoryDto)
+                        .toList());
+        model.addAttribute(BOOK_ATTRIBUTE, new BookDto());
+        return BOOK_EDIT_VIEW;
+    }
+
+    @PostMapping("/edit/")
+    public String create(
+            @RequestParam(name = PAGE_ATTRIBUTE, defaultValue = "0") int page,
+            @ModelAttribute(name = BOOK_ATTRIBUTE) @Valid BookDto book,
+            @RequestParam("cover") MultipartFile cover,
+            BindingResult bindingResult,
+            Model model,
+            RedirectAttributes redirectAttributes) throws ParseException {
+        if (bindingResult.hasErrors()) {
+            model.addAttribute(PAGE_ATTRIBUTE, page);
+            model.addAttribute(
+                    CATEGORIES_ATTRIBUTE,
+                    categoryService.getAll().stream()
+                            .map(this::toCategoryDto)
+                            .toList());
+            return BOOK_EDIT_VIEW;
+        }
+
+        String base64Image = ToBase64.getBase64FromFile(cover);
+
+        book.setImage(base64Image);
+
+        redirectAttributes.addAttribute(PAGE_ATTRIBUTE, page);
+        book.setDate(Formatter.format(new Date()));
+        bookService.create(toEntity(book));
+        return Constants.REDIRECT_VIEW + URL;
+    }
+
+    @GetMapping("/edit/{id}")
+    public String update(
+            @PathVariable(name = "id") Long id,
+            @RequestParam(name = PAGE_ATTRIBUTE, defaultValue = "0") int page,
+            @RequestParam(name = CATEGORYID_ATTRIBUTE, defaultValue = "0") int filter,
+            Model model) {
+        if (id <= 0) {
+            throw new IllegalArgumentException();
+        }
+        model.addAttribute(PAGE_ATTRIBUTE, page);
+        model.addAttribute(CATEGORYID_ATTRIBUTE, filter);
+        model.addAttribute(
+                CATEGORIES_ATTRIBUTE,
+                categoryService.getAll().stream()
+                        .map(this::toCategoryDto)
+                        .toList());
+        model.addAttribute(BOOK_ATTRIBUTE, toDto(bookService.get(id)));
+        return BOOK_EDIT_VIEW;
+    }
+
+    @PostMapping("/edit/{id}")
+    public String update(
+            @PathVariable(name = "id") Long id,
+            @RequestParam(name = PAGE_ATTRIBUTE, defaultValue = "0") int page,
+            @ModelAttribute(name = BOOK_ATTRIBUTE) @Valid BookDto book,
+            @RequestParam("cover") MultipartFile cover,
+            BindingResult bindingResult,
+            Model model,
+            RedirectAttributes redirectAttributes) throws ParseException {
+        if (bindingResult.hasErrors()) {
+            model.addAttribute(PAGE_ATTRIBUTE, page);
+            model.addAttribute(
+                    CATEGORIES_ATTRIBUTE,
+                    categoryService.getAll().stream()
+                            .map(this::toCategoryDto)
+                            .toList());
+            return BOOK_EDIT_VIEW;
+        }
+        if (id <= 0) {
+            throw new IllegalArgumentException();
+        }
+
+        String base64Image = ToBase64.getBase64FromFile(cover);
+        book.setImage(base64Image);
+
+        redirectAttributes.addAttribute(PAGE_ATTRIBUTE, page);
+        bookService.update(id, toEntity(book));
+        return Constants.REDIRECT_VIEW + URL;
+    }
+
+    @PostMapping("/delete/{id}")
+    public String delete(
+            @PathVariable(name = "id") Long id,
+            @RequestParam(name = PAGE_ATTRIBUTE, defaultValue = "0") int page,
+            @RequestParam(name = CATEGORYID_ATTRIBUTE, defaultValue = "0") int filter,
+            RedirectAttributes redirectAttributes) {
+        redirectAttributes.addAttribute(PAGE_ATTRIBUTE, page);
+        redirectAttributes.addAttribute(CATEGORYID_ATTRIBUTE, filter);
+        bookService.delete(id);
+        return Constants.REDIRECT_VIEW + URL;
+    }
+}

src/main/java/com/example/backend/books/api/BookDto.java

@@ -0,0 +1,188 @@
+package com.example.backend.books.api;
+
+import jakarta.validation.constraints.Min;
+import jakarta.validation.constraints.NotNull;
+import jakarta.validation.constraints.NotBlank;
+
+public class BookDto {
+    private Long id;
+    @NotNull
+    @Min(1)
+    private Long categoryId;
+    private String categoryName;
+    @NotBlank
+    private String title;
+    @NotBlank
+    private String author;
+    @NotNull
+    @Min(1)
+    private Double price;
+    private String description;
+    private String annotation;
+    @NotBlank
+    private String bookCode;
+    private String publisher;
+    private String series;
+    @NotNull
+    @Min(1950)
+    private Integer publicationYear;
+    private Integer pagesNum;
+    private String size;
+    private String coverType;
+    private Integer circulation;
+    private Integer weight;
+    private String image;
+    private String date;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Long getCategoryId() {
+        return categoryId;
+    }
+
+    public void setCategoryId(Long categoryId) {
+        this.categoryId = categoryId;
+    }
+
+    public String getCategoryName() {
+        return categoryName;
+    }
+
+    public void setCategoryName(String categoryName) {
+        this.categoryName = categoryName;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+
+    public String getAuthor() {
+        return author;
+    }
+
+    public void setAuthor(String author) {
+        this.author = author;
+    }
+
+    public Double getPrice() {
+        return price;
+    }
+
+    public void setPrice(Double price) {
+        this.price = price;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
+    public String getAnnotation() {
+        return annotation;
+    }
+
+    public void setAnnotation(String annotation) {
+        this.annotation = annotation;
+    }
+
+    public String getBookCode() {
+        return bookCode;
+    }
+
+    public void setBookCode(String bookCode) {
+        this.bookCode = bookCode;
+    }
+
+    public String getPublisher() {
+        return publisher;
+    }
+
+    public void setPublisher(String publisher) {
+        this.publisher = publisher;
+    }
+
+    public String getSeries() {
+        return series;
+    }
+
+    public void setSeries(String series) {
+        this.series = series;
+    }
+
+    public Integer getPublicationYear() {
+        return publicationYear;
+    }
+
+    public void setPublicationYear(Integer publicationYear) {
+        this.publicationYear = publicationYear;
+    }
+
+    public Integer getPagesNum() {
+        return pagesNum;
+    }
+
+    public void setPagesNum(Integer pagesNum) {
+        this.pagesNum = pagesNum;
+    }
+
+    public String getSize() {
+        return size;
+    }
+
+    public void setSize(String size) {
+        this.size = size;
+    }
+
+    public String getCoverType() {
+        return coverType;
+    }
+
+    public void setCoverType(String coverType) {
+        this.coverType = coverType;
+    }
+
+    public Integer getCirculation() {
+        return circulation;
+    }
+
+    public void setCirculation(Integer circulation) {
+        this.circulation = circulation;
+    }
+
+    public Integer getWeight() {
+        return weight;
+    }
+
+    public void setWeight(Integer weight) {
+        this.weight = weight;
+    }
+
+    public String getImage() {
+        return image;
+    }
+
+    public void setImage(String image) {
+        this.image = image;
+    }
+
+    public String getDate() {
+        return date;
+    }
+
+    public void setDate(String date) {
+        this.date = date;
+    }
+}

src/main/java/com/example/backend/books/api/CatalogController.java

@@ -0,0 +1,148 @@
+package com.example.backend.books.api;
+
+import org.modelmapper.ModelMapper;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.servlet.mvc.support.RedirectAttributes;
+
+import com.example.backend.books.model.BookEntity;
+import com.example.backend.books.service.BookService;
+import com.example.backend.categories.api.CategoryDto;
+import com.example.backend.categories.model.CategoryEntity;
+import com.example.backend.categories.service.CategoryService;
+import com.example.backend.core.api.PageAttributesMapper;
+import com.example.backend.core.configuration.Constants;
+import com.example.backend.core.session.SessionCart;
+import com.example.backend.orders.api.BookCountDto;
+
+@Controller
+@RequestMapping(CatalogController.URL)
+public class CatalogController {
+    public static final String URL = "/catalog";
+
+    private static final String CATALOG_VIEW = "catalog";
+
+    private static final String SORT_ATTRIBUTE = "filter";
+    private static final String PAGE_ATTRIBUTE = "page";
+    private static final String CART_ATTRIBUTE = "cart";
+    private static final String CATEGORIES_ATTRIBUTE = "categories";
+    private static final String BOOKID_ATTRIBUTE = "bookId";
+    private static final String CATEGORYNAME_ATTRIBUTE = "activeName";
+    private static final String CATEGORYID_ATTRIBUTE = "activeId";
+
+    private final BookService bookService;
+    private final CategoryService categoryService;
+    private final ModelMapper modelMapper;
+    private final SessionCart cart;
+
+    public CatalogController(
+            BookService bookService,
+            CategoryService categoryService,
+            ModelMapper modelMapper,
+            SessionCart cart) {
+        this.bookService = bookService;
+        this.categoryService = categoryService;
+        this.modelMapper = modelMapper;
+        this.cart = cart;
+    }
+
+    private BookDto toBookDto(BookEntity entity) {
+        return modelMapper.map(entity, BookDto.class);
+    }
+
+    private CategoryDto toCategoryDto(CategoryEntity entity) {
+        return modelMapper.map(entity, CategoryDto.class);
+    }
+
+    @GetMapping
+    public String getCatalog(
+            @RequestParam(name = PAGE_ATTRIBUTE, defaultValue = "0") int page,
+            @RequestParam(name = SORT_ATTRIBUTE, defaultValue = "new") String filter,
+            Model model) {
+        model.addAttribute(PAGE_ATTRIBUTE, page);
+        model.addAttribute(SORT_ATTRIBUTE, filter);
+        model.addAttribute(CATEGORYNAME_ATTRIBUTE, "Все книги");
+        model.addAttribute(CART_ATTRIBUTE, cart);
+        model.addAllAttributes(PageAttributesMapper.toAttributes(
+                bookService.getAllByFilters(0, page, Constants.DEFAULT_PAGE_SIZE, filter, null),
+                this::toBookDto));
+        model.addAttribute(
+                CATEGORIES_ATTRIBUTE,
+                categoryService.getAll().stream()
+                        .map(this::toCategoryDto)
+                        .toList());
+        return CATALOG_VIEW;
+    }
+
+    @GetMapping("/{id}")
+    public String getCatalog(
+            @PathVariable(name = "id") Long id,
+            @RequestParam(name = PAGE_ATTRIBUTE, defaultValue = "0") int page,
+            @RequestParam(name = SORT_ATTRIBUTE, defaultValue = "new") String filter,
+            Model model) {
+        CategoryEntity category = categoryService.get(id);
+        model.addAttribute(PAGE_ATTRIBUTE, page);
+        model.addAttribute(SORT_ATTRIBUTE, filter);
+        model.addAttribute(CATEGORYNAME_ATTRIBUTE, category.getName());
+        model.addAttribute(CATEGORYID_ATTRIBUTE, id);
+        model.addAttribute(CART_ATTRIBUTE, cart);
+        model.addAllAttributes(PageAttributesMapper.toAttributes(
+                bookService.getAllByFilters(id, page, Constants.DEFAULT_PAGE_SIZE, filter, null),
+                this::toBookDto));
+        model.addAttribute(
+                CATEGORIES_ATTRIBUTE,
+                categoryService.getAll().stream()
+                        .map(this::toCategoryDto)
+                        .toList());
+        return CATALOG_VIEW;
+    }
+
+    @PostMapping
+    public String addCartItem(
+            @RequestParam(name = BOOKID_ATTRIBUTE) Long bookId,
+            @RequestParam(name = PAGE_ATTRIBUTE, defaultValue = "0") int page,
+            @RequestParam(name = SORT_ATTRIBUTE, defaultValue = "new") String filter,
+            Model model,
+            RedirectAttributes redirectAttributes) {
+        BookEntity book = bookService.get(bookId);
+        BookCountDto bookCountDto = new BookCountDto();
+        bookCountDto.setBook(toBookDto(book));
+        bookCountDto.setCount(1);
+        cart.put(bookId, bookCountDto);
+
+        redirectAttributes.addAttribute(CATEGORYNAME_ATTRIBUTE, "Все книги");
+        redirectAttributes.addAttribute(PAGE_ATTRIBUTE, page);
+        redirectAttributes.addAttribute(SORT_ATTRIBUTE, filter);
+
+        return Constants.REDIRECT_VIEW + URL;
+    }
+
+    @PostMapping("/{id}")
+    public String addCartItem(
+            @PathVariable(name = "id") Long id,
+            @RequestParam(name = BOOKID_ATTRIBUTE) Long bookId,
+            @RequestParam(name = PAGE_ATTRIBUTE, defaultValue = "0") int page,
+            @RequestParam(name = SORT_ATTRIBUTE, defaultValue = "new") String filter,
+            Model model,
+            RedirectAttributes redirectAttributes) {
+        BookEntity book = bookService.get(bookId);
+        BookCountDto bookCountDto = new BookCountDto();
+        bookCountDto.setBook(toBookDto(book));
+        bookCountDto.setCount(1);
+        cart.put(bookId, bookCountDto);
+
+        CategoryEntity category = categoryService.get(id);
+
+        redirectAttributes.addAttribute(CATEGORYID_ATTRIBUTE, id);
+        redirectAttributes.addAttribute(CATEGORYNAME_ATTRIBUTE, category.getName());
+        redirectAttributes.addAttribute(PAGE_ATTRIBUTE, page);
+        redirectAttributes.addAttribute(SORT_ATTRIBUTE, filter);
+
+        return Constants.REDIRECT_VIEW + URL + "/" + id;
+    }
+}

src/main/java/com/example/backend/books/api/CatalogMobileController.java

@@ -0,0 +1,44 @@
+package com.example.backend.books.api;
+
+import org.modelmapper.ModelMapper;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+import com.example.backend.categories.api.CategoryDto;
+import com.example.backend.categories.model.CategoryEntity;
+import com.example.backend.categories.service.CategoryService;
+
+@Controller
+@RequestMapping(CatalogMobileController.URL)
+public class CatalogMobileController {
+    public static final String URL = "/сatalog-mobile";
+
+    private static final String CATALOG_MOBILE_VIEW = "catalog-mobile";
+
+    private final CategoryService categoryService;
+    private final ModelMapper modelMapper;
+
+    public CatalogMobileController(
+            CategoryService categoryService,
+            ModelMapper modelMapper) {
+        this.categoryService = categoryService;
+        this.modelMapper = modelMapper;
+    }
+
+    private CategoryDto toCategoryDto(CategoryEntity entity) {
+        return modelMapper.map(entity, CategoryDto.class);
+    }
+
+    @GetMapping
+    public String getCatalogMobile(Model model) {
+
+        model.addAttribute(
+                "categories",
+                categoryService.getAll().stream()
+                        .map(this::toCategoryDto)
+                        .toList());
+        return CATALOG_MOBILE_VIEW;
+    }
+}

src/main/java/com/example/backend/books/api/MainPageController.java

@@ -0,0 +1,49 @@
+package com.example.backend.books.api;
+
+import java.util.List;
+
+import org.modelmapper.ModelMapper;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+
+import com.example.backend.books.model.BookEntity;
+import com.example.backend.books.service.BookService;
+import com.example.backend.core.utils.Formatter;
+
+@Controller
+public class MainPageController {
+    private static final String MAIN_VIEW = "main-page";
+
+    private final BookService bookService;
+    private final ModelMapper modelMapper;
+
+    public MainPageController(BookService bookService, ModelMapper modelMapper) {
+        this.bookService = bookService;
+        this.modelMapper = modelMapper;
+    }
+
+    private BookDto toDto(BookEntity entity) {
+        final BookDto dto = modelMapper.map(entity, BookDto.class);
+        dto.setDate(Formatter.format(entity.getDate()));
+        return dto;
+    }
+
+    @GetMapping
+    public String getMainPage(Model model) {
+        model.addAttribute(
+                "novelties",
+                bookService.getNewest(6));
+        model.addAttribute(
+                "promotions",
+                bookService.getByIds(List.of(4L, 44L, 45L, 65L, 66L, 67L)).stream()
+                        .map(this::toDto)
+                        .toList());
+        model.addAttribute(
+                "recommendations",
+                bookService.getByIds(List.of(68L, 69L, 70L, 71L, 72L, 75L)).stream()
+                        .map(this::toDto)
+                        .toList());
+        return MAIN_VIEW;
+    }
+}

src/main/java/com/example/backend/books/api/ProductCardController.java

@@ -0,0 +1,65 @@
+package com.example.backend.books.api;
+
+import org.modelmapper.ModelMapper;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+import com.example.backend.books.model.BookEntity;
+import com.example.backend.books.service.BookService;
+import com.example.backend.core.configuration.Constants;
+import com.example.backend.core.session.SessionCart;
+import com.example.backend.orders.api.BookCountDto;
+
+@Controller
+@RequestMapping(ProductCardController.URL)
+public class ProductCardController {
+    public static final String URL = "/product-card";
+
+    private static final String CARD_VIEW = "product-card";
+
+    private static final String CART_ATTRIBUTE = "cart";
+
+    private final BookService bookService;
+    private final ModelMapper modelMapper;
+    private final SessionCart cart;
+
+    public ProductCardController(
+            BookService bookService,
+            ModelMapper modelMapper,
+            SessionCart cart) {
+        this.bookService = bookService;
+        this.modelMapper = modelMapper;
+        this.cart = cart;
+    }
+
+    private BookDto toBookDto(BookEntity entity) {
+        return modelMapper.map(entity, BookDto.class);
+    }
+
+    @GetMapping("/{id}")
+    public String getProductCard(@PathVariable(name = "id") Long id, Model model) {
+        if (id <= 0) {
+            throw new IllegalArgumentException();
+        }
+        model.addAttribute(CART_ATTRIBUTE, cart);
+        model.addAttribute("book", bookService.get(id));
+        return CARD_VIEW;
+    }
+
+    @PostMapping("/{id}")
+    public String addCartItem(@PathVariable(name = "id") Long id, Model model) {
+        if (id <= 0) {
+            throw new IllegalArgumentException();
+        }
+        BookEntity book = bookService.get(id);
+        BookCountDto bookCountDto = new BookCountDto();
+        bookCountDto.setBook(toBookDto(book));
+        bookCountDto.setCount(1);
+        cart.put(id, bookCountDto);
+        return Constants.REDIRECT_VIEW + URL + "/" + id;
+    }
+}

src/main/java/com/example/backend/books/api/SearchController.java

@@ -0,0 +1,81 @@
+package com.example.backend.books.api;
+
+import org.modelmapper.ModelMapper;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.servlet.mvc.support.RedirectAttributes;
+
+import com.example.backend.books.model.BookEntity;
+import com.example.backend.books.service.BookService;
+import com.example.backend.core.api.PageAttributesMapper;
+import com.example.backend.core.configuration.Constants;
+import com.example.backend.core.session.SessionCart;
+import com.example.backend.orders.api.BookCountDto;
+
+@Controller
+@RequestMapping(SearchController.URL)
+public class SearchController {
+    public static final String URL = "/search";
+    private static final String SEARCH_VIEW = "search";
+
+    private static final String PAGE_ATTRIBUTE = "page";
+    private static final String SEARCH_ATTRIBUTE = "searchInfo";
+    private static final String SORT_ATTRIBUTE = "filter";
+    private static final String CART_ATTRIBUTE = "cart";
+    private static final String BOOKID_ATTRIBUTE = "bookId";
+
+    private final BookService bookService;
+    private final ModelMapper modelMapper;
+    private final SessionCart cart;
+
+    public SearchController(BookService bookService, ModelMapper modelMapper, SessionCart cart) {
+        this.bookService = bookService;
+        this.modelMapper = modelMapper;
+        this.cart = cart;
+    }
+
+    private BookDto toBookDto(BookEntity entity) {
+        return modelMapper.map(entity, BookDto.class);
+    }
+
+    @GetMapping
+    public String search(
+            @RequestParam(name = PAGE_ATTRIBUTE, defaultValue = "0") int page,
+            @RequestParam(name = SORT_ATTRIBUTE, defaultValue = "new") String filter,
+            @RequestParam(name = SEARCH_ATTRIBUTE, defaultValue = "") String searchInfo,
+            Model model) {
+        model.addAttribute(CART_ATTRIBUTE, cart);
+        model.addAttribute(PAGE_ATTRIBUTE, page);
+        model.addAttribute(SEARCH_ATTRIBUTE, searchInfo);
+        model.addAttribute(SORT_ATTRIBUTE, filter);
+        model.addAllAttributes(PageAttributesMapper.toAttributes(
+                bookService.getAllByFilters(0, page, Constants.DEFAULT_PAGE_SIZE, filter, searchInfo),
+                this::toBookDto));
+        return SEARCH_VIEW;
+    }
+
+    @PostMapping
+    public String addCartItem(
+            @RequestParam(name = BOOKID_ATTRIBUTE) Long bookId,
+            @RequestParam(name = PAGE_ATTRIBUTE, defaultValue = "0") int page,
+            @RequestParam(name = SORT_ATTRIBUTE, defaultValue = "new") String filter,
+            @RequestParam(name = SEARCH_ATTRIBUTE, defaultValue = "") String searchInfo,
+            Model model,
+            RedirectAttributes redirectAttributes) {
+        BookEntity book = bookService.get(bookId);
+        BookCountDto bookCountDto = new BookCountDto();
+        bookCountDto.setBook(toBookDto(book));
+        bookCountDto.setCount(1);
+        cart.put(bookId, bookCountDto);
+
+        redirectAttributes.addAttribute(SEARCH_ATTRIBUTE, searchInfo);
+        redirectAttributes.addAttribute(PAGE_ATTRIBUTE, page);
+        redirectAttributes.addAttribute(SORT_ATTRIBUTE, filter);
+
+        return Constants.REDIRECT_VIEW + URL;
+    }
+}

src/main/java/com/example/backend/books/model/BookEntity.java

@@ -0,0 +1,261 @@
+package com.example.backend.books.model;
+
+import java.util.HashSet;
+import java.util.Objects;
+import java.util.Set;
+import java.util.Date;
+
+import com.example.backend.categories.model.CategoryEntity;
+import com.example.backend.ordersbooks.model.OrderBookEntity;
+import com.example.backend.core.model.BaseEntity;
+
+import jakarta.persistence.CascadeType;
+import jakarta.persistence.Lob;
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.OneToMany;
+import jakarta.persistence.OrderBy;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.Table;
+
+@Entity
+@Table(name = "books")
+public class BookEntity extends BaseEntity {
+    @ManyToOne
+    @JoinColumn(name = "categoryId", nullable = false)
+    private CategoryEntity category;
+    @Column(nullable = false)
+    private String title;
+    @Column(nullable = false)
+    private String author;
+    @Column(nullable = false)
+    private Double price;
+    @Lob
+    private String description;
+    @Lob
+    private String annotation;
+    @Column(nullable = false, unique = true)
+    private String bookCode;
+    private String publisher;
+    private String series;
+    @Column(nullable = false)
+    private Integer publicationYear;
+    private Integer pagesNum;
+    private String size;
+    private String coverType;
+    private Integer circulation;
+    private Integer weight;
+    @Lob
+    private String image;
+    private Date date = new Date();
+
+    @OneToMany(mappedBy = "book", cascade = CascadeType.REMOVE)
+    @OrderBy("id ASC")
+    private Set<OrderBookEntity> orderBooks = new HashSet<>();
+
+    public BookEntity() {
+    }
+
+    public BookEntity(CategoryEntity category, String title, String author, Double price,
+            String description, String annotation, String bookCode, String publisher, String series,
+            Integer publicationYear, Integer pagesNum, String size, String coverType, Integer circulation,
+            Integer weight, String image) {
+        this.category = category;
+        this.title = title;
+        this.author = author;
+        this.price = price;
+        this.description = description;
+        this.annotation = annotation;
+        this.bookCode = bookCode;
+        this.publisher = publisher;
+        this.series = series;
+        this.publicationYear = publicationYear;
+        this.pagesNum = pagesNum;
+        this.size = size;
+        this.coverType = coverType;
+        this.circulation = circulation;
+        this.weight = weight;
+        this.image = image;
+        date = new Date();
+    }
+
+    public CategoryEntity getCategory() {
+        return category;
+    }
+
+    public void setCategory(CategoryEntity category) {
+        this.category = category;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+
+    public String getAuthor() {
+        return author;
+    }
+
+    public void setAuthor(String author) {
+        this.author = author;
+    }
+
+    public Double getPrice() {
+        return price;
+    }
+
+    public void setPrice(Double price) {
+        this.price = price;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
+    public String getAnnotation() {
+        return annotation;
+    }
+
+    public void setAnnotation(String annotation) {
+        this.annotation = annotation;
+    }
+
+    public String getBookCode() {
+        return bookCode;
+    }
+
+    public void setBookCode(String bookCode) {
+        this.bookCode = bookCode;
+    }
+
+    public String getPublisher() {
+        return publisher;
+    }
+
+    public void setPublisher(String publisher) {
+        this.publisher = publisher;
+    }
+
+    public String getSeries() {
+        return series;
+    }
+
+    public void setSeries(String series) {
+        this.series = series;
+    }
+
+    public Integer getPublicationYear() {
+        return publicationYear;
+    }
+
+    public void setPublicationYear(Integer publicationYear) {
+        this.publicationYear = publicationYear;
+    }
+
+    public Integer getPagesNum() {
+        return pagesNum;
+    }
+
+    public void setPagesNum(Integer pagesNum) {
+        this.pagesNum = pagesNum;
+    }
+
+    public String getSize() {
+        return size;
+    }
+
+    public void setSize(String size) {
+        this.size = size;
+    }
+
+    public String getCoverType() {
+        return coverType;
+    }
+
+    public void setCoverType(String coverType) {
+        this.coverType = coverType;
+    }
+
+    public Integer getCirculation() {
+        return circulation;
+    }
+
+    public void setCirculation(Integer circulation) {
+        this.circulation = circulation;
+    }
+
+    public Integer getWeight() {
+        return weight;
+    }
+
+    public void setWeight(Integer weight) {
+        this.weight = weight;
+    }
+
+    public String getImage() {
+        return image;
+    }
+
+    public void setImage(String image) {
+        this.image = image;
+    }
+
+    public Date getDate() {
+        return date;
+    }
+
+    public void setDate(Date date) {
+        this.date = date;
+    }
+
+    public Set<OrderBookEntity> getOrderBooks() {
+        return orderBooks;
+    }
+
+    public void addOrder(OrderBookEntity orderBook) {
+        if (orderBook.getBook() != this) {
+            orderBook.setBook(this);
+        }
+        orderBooks.add(orderBook);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id, category, title, author, price, description, annotation, bookCode, publisher,
+                series, publicationYear, pagesNum, size, coverType, circulation, weight, image);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj)
+            return true;
+        if (obj == null || getClass() != obj.getClass())
+            return false;
+        final BookEntity other = (BookEntity) obj;
+        return Objects.equals(other.getId(), id)
+                && Objects.equals(other.getCategory(), category)
+                && Objects.equals(other.getTitle(), title)
+                && Objects.equals(other.getAuthor(), author)
+                && Objects.equals(other.getPrice(), price)
+                && Objects.equals(other.getDescription(), description)
+                && Objects.equals(other.getAnnotation(), annotation)
+                && Objects.equals(other.getBookCode(), bookCode)
+                && Objects.equals(other.getPublisher(), publisher)
+                && Objects.equals(other.getSeries(), series)
+                && Objects.equals(other.getPublicationYear(), publicationYear)
+                && Objects.equals(other.getPagesNum(), pagesNum)
+                && Objects.equals(other.getSize(), size)
+                && Objects.equals(other.getCoverType(), coverType)
+                && Objects.equals(other.getCirculation(), circulation)
+                && Objects.equals(other.getWeight(), weight)
+                && Objects.equals(other.getImage(), image);
+    }
+}

src/main/java/com/example/backend/books/repository/BookRepository.java

@@ -0,0 +1,31 @@
+package com.example.backend.books.repository;
+
+import java.util.List;
+
+import org.springframework.data.domain.Limit;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.CrudRepository;
+import org.springframework.data.repository.PagingAndSortingRepository;
+import org.springframework.data.repository.query.Param;
+
+import com.example.backend.books.model.BookEntity;
+
+public interface BookRepository extends CrudRepository<BookEntity, Long>, PagingAndSortingRepository<BookEntity, Long> {
+    List<BookEntity> findByCategoryId(long categoryId);
+
+    List<BookEntity> findByIdIn(List<Long> ids);
+
+    Page<BookEntity> findByCategoryId(long categoryId, Pageable pageable);
+
+    @Query("SELECT b FROM BookEntity b WHERE (:categoryId IS NULL OR b.category.id = :categoryId) " +
+            "AND ((:searchInfo IS NULL OR LOWER(b.title) LIKE %:searchInfo%) " +
+            "OR (:searchInfo IS NULL OR LOWER(b.author) LIKE %:searchInfo%))")
+    Page<BookEntity> findAllByFilters(@Param("categoryId") Long categoryId,
+            @Param("searchInfo") String searchInfo,
+            Pageable pageable);
+
+    @Query("SELECT b FROM BookEntity b ORDER BY b.date desc")
+    List<BookEntity> findSomeNewest(Limit limit);
+}

src/main/java/com/example/backend/books/service/BookService.java

@@ -0,0 +1,146 @@
+package com.example.backend.books.service;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+import java.util.stream.StreamSupport;
+
+import org.springframework.data.domain.Limit;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.domain.Sort;
+import org.springframework.data.domain.Sort.Order;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import com.example.backend.books.model.BookEntity;
+import com.example.backend.books.repository.BookRepository;
+import com.example.backend.core.error.NotFoundException;
+
+@Service
+public class BookService {
+    private final BookRepository repository;
+
+    public BookService(BookRepository repository) {
+        this.repository = repository;
+    }
+
+    @Transactional(readOnly = true)
+    public List<BookEntity> getAll(long categoryId) {
+        if (categoryId <= 0L) {
+            return StreamSupport.stream(repository.findAll().spliterator(), false).toList();
+        }
+        return repository.findByCategoryId(categoryId);
+    }
+
+    @Transactional(readOnly = true)
+    public Page<BookEntity> getAll(long categoryId, int page, int size) {
+        final Pageable pageRequest = PageRequest.of(page, size);
+        if (categoryId <= 0L) {
+            return repository.findAll(pageRequest);
+        }
+        return repository.findByCategoryId(categoryId, pageRequest);
+    }
+
+    @Transactional(readOnly = true)
+    public Page<BookEntity> getAllByFilters(long categoryId, int page, int size, String sortType, String searchInfo) {
+        Sort sort = Sort.by(new Order(Sort.Direction.DESC, "publicationYear"));
+        if (sortType != null && !sortType.isEmpty()) {
+            sort = Sort.by(getSortInfo(sortType));
+        }
+
+        Pageable pageRequest = PageRequest.of(page, size, sort);
+        Long categoryIdWrapper = categoryId > 0L ? categoryId : null;
+        String searchInfoWrapper = searchInfo != null && !searchInfo.isEmpty() ? searchInfo.toLowerCase() : null;
+
+        return repository.findAllByFilters(categoryIdWrapper, searchInfoWrapper, pageRequest);
+    }
+
+    @Transactional(readOnly = true)
+    public List<BookEntity> getByIds(List<Long> ids) {
+        if (ids == null || ids.isEmpty()) {
+            return new ArrayList<>();
+        }
+        List<BookEntity> allEntities = repository.findByIdIn(ids);
+
+        Map<Long, BookEntity> entityMap = allEntities.stream()
+                .collect(Collectors.toMap(BookEntity::getId, entity -> entity));
+        List<BookEntity> sortedEntities = new ArrayList<>();
+        for (Long id : ids) {
+            BookEntity entity = entityMap.get(id);
+            if (entity != null) {
+                sortedEntities.add(entity);
+            }
+        }
+
+        return sortedEntities;
+    }
+
+    @Transactional(readOnly = true)
+    public List<BookEntity> getNewest(int limit) {
+        if (limit > 0) {
+            return repository.findSomeNewest(Limit.of(limit));
+        }
+        return Collections.emptyList();
+    }
+
+    @Transactional(readOnly = true)
+    public BookEntity get(long id) {
+        return repository.findById(id)
+                .orElseThrow(() -> new NotFoundException(BookEntity.class, id));
+    }
+
+    @Transactional
+    public BookEntity create(BookEntity entity) {
+        if (entity == null) {
+            throw new IllegalArgumentException("Entity is null");
+        }
+        return repository.save(entity);
+    }
+
+    @Transactional
+    public BookEntity update(Long id, BookEntity entity) {
+        final BookEntity existsEntity = get(id);
+        existsEntity.setCategory(entity.getCategory());
+        existsEntity.setTitle(entity.getTitle());
+        existsEntity.setAuthor(entity.getAuthor());
+        existsEntity.setPrice(entity.getPrice());
+        existsEntity.setDescription(entity.getDescription());
+        existsEntity.setAnnotation(entity.getAnnotation());
+        existsEntity.setBookCode(entity.getBookCode());
+        existsEntity.setPublisher(entity.getPublisher());
+        existsEntity.setSeries(entity.getSeries());
+        existsEntity.setPublicationYear(entity.getPublicationYear());
+        existsEntity.setPagesNum(entity.getPagesNum());
+        existsEntity.setSize(entity.getSize());
+        existsEntity.setCoverType(entity.getCoverType());
+        existsEntity.setCirculation(entity.getCirculation());
+        existsEntity.setWeight(entity.getWeight());
+        existsEntity.setImage(entity.getImage());
+        return repository.save(existsEntity);
+    }
+
+    @Transactional
+    public BookEntity delete(Long id) {
+        final BookEntity existsEntity = get(id);
+        repository.delete(existsEntity);
+        return existsEntity;
+    }
+
+    private Order getSortInfo(String type) {
+        switch (type) {
+            case "cheap":
+                return new Order(Sort.Direction.ASC, "price");
+            case "expensive":
+                return new Order(Sort.Direction.DESC, "price");
+            case "new":
+                return new Order(Sort.Direction.DESC, "publicationYear");
+            default:
+                return new Order(Sort.Direction.DESC, "publicationYear");
+        }
+    }
+
+}

src/main/java/com/example/backend/categories/api/CategoryController.java

@@ -0,0 +1,104 @@
+package com.example.backend.categories.api;
+
+import org.modelmapper.ModelMapper;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.validation.BindingResult;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.ModelAttribute;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+import com.example.backend.categories.model.CategoryEntity;
+import com.example.backend.categories.service.CategoryService;
+import com.example.backend.core.configuration.Constants;
+
+import jakarta.validation.Valid;
+
+@Controller
+@RequestMapping(CategoryController.URL)
+public class CategoryController {
+    public static final String URL = Constants.ADMIN_PREFIX + "/category";
+    private static final String CATEGORY_VIEW = "category";
+    private static final String CATEGORY_EDIT_VIEW = "category-edit";
+    private static final String CATEGORY_ATTRIBUTE = "category";
+
+    private final CategoryService categoryService;
+    private final ModelMapper modelMapper;
+
+    public CategoryController(CategoryService categoryService, ModelMapper modelMapper) {
+        this.categoryService = categoryService;
+        this.modelMapper = modelMapper;
+    }
+
+    private CategoryDto toDto(CategoryEntity entity) {
+        return modelMapper.map(entity, CategoryDto.class);
+    }
+
+    private CategoryEntity toEntity(CategoryDto dto) {
+        return modelMapper.map(dto, CategoryEntity.class);
+    }
+
+    @GetMapping
+    public String getAll(Model model) {
+        model.addAttribute(
+                "categories",
+                categoryService.getAll().stream()
+                        .map(this::toDto)
+                        .toList());
+        return CATEGORY_VIEW;
+    }
+
+    @GetMapping("/edit/")
+    public String create(Model model) {
+        model.addAttribute(CATEGORY_ATTRIBUTE, new CategoryDto());
+        return CATEGORY_EDIT_VIEW;
+    }
+
+    @PostMapping("/edit/")
+    public String create(
+            @ModelAttribute(name = CATEGORY_ATTRIBUTE) @Valid CategoryDto category,
+            BindingResult bindingResult,
+            Model model) {
+        if (bindingResult.hasErrors()) {
+            return CATEGORY_EDIT_VIEW;
+        }
+        categoryService.create(toEntity(category));
+        return Constants.REDIRECT_VIEW + URL;
+    }
+
+    @GetMapping("/edit/{id}")
+    public String update(
+            @PathVariable(name = "id") Long id,
+            Model model) {
+        if (id <= 0) {
+            throw new IllegalArgumentException();
+        }
+        model.addAttribute(CATEGORY_ATTRIBUTE, toDto(categoryService.get(id)));
+        return CATEGORY_EDIT_VIEW;
+    }
+
+    @PostMapping("/edit/{id}")
+    public String update(
+            @PathVariable(name = "id") Long id,
+            @ModelAttribute(name = CATEGORY_ATTRIBUTE) @Valid CategoryDto category,
+            BindingResult bindingResult,
+            Model model) {
+        if (bindingResult.hasErrors()) {
+            return CATEGORY_EDIT_VIEW;
+        }
+        if (id <= 0) {
+            throw new IllegalArgumentException();
+        }
+        categoryService.update(id, toEntity(category));
+        return Constants.REDIRECT_VIEW + URL;
+    }
+
+    @PostMapping("/delete/{id}")
+    public String delete(
+            @PathVariable(name = "id") Long id) {
+        categoryService.delete(id);
+        return Constants.REDIRECT_VIEW + URL;
+    }
+}

src/main/java/com/example/backend/categories/api/CategoryDto.java

@@ -0,0 +1,27 @@
+package com.example.backend.categories.api;
+
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.Size;
+
+public class CategoryDto {
+    private Long id;
+    @NotBlank
+    @Size(min = 3, max = 50)
+    private String name;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+}

src/main/java/com/example/backend/categories/model/CategoryEntity.java

@@ -0,0 +1,48 @@
+package com.example.backend.categories.model;
+
+import java.util.Objects;
+
+import com.example.backend.core.model.BaseEntity;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.Table;
+
+@Entity
+@Table(name = "categories")
+public class CategoryEntity extends BaseEntity {
+    @Column(nullable = false, unique = true, length = 50)
+    private String name;
+
+    public CategoryEntity() {
+    }
+
+    public CategoryEntity(String name) {
+        this.name = name;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id, name);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj)
+            return true;
+        if (obj == null || getClass() != obj.getClass())
+            return false;
+        final CategoryEntity other = (CategoryEntity) obj;
+        return Objects.equals(other.getId(), id)
+                && Objects.equals(other.getName(), name);
+    }
+
+}

src/main/java/com/example/backend/categories/repository/CategoryRepository.java

@@ -0,0 +1,17 @@
+package com.example.backend.categories.repository;
+
+import java.util.List;
+import java.util.Optional;
+
+import org.springframework.data.domain.Sort;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.CrudRepository;
+
+import com.example.backend.categories.model.CategoryEntity;
+
+public interface CategoryRepository extends CrudRepository<CategoryEntity, Long> {
+    Optional<CategoryEntity> findByNameIgnoreCase(String name);
+
+    @Query("SELECT c FROM CategoryEntity c")
+    List<CategoryEntity> findAll(Sort sort);
+}

src/main/java/com/example/backend/categories/service/CategoryService.java

@@ -0,0 +1,62 @@
+package com.example.backend.categories.service;
+
+import java.util.List;
+
+import org.springframework.data.domain.Sort;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import com.example.backend.categories.model.CategoryEntity;
+import com.example.backend.categories.repository.CategoryRepository;
+import com.example.backend.core.error.NotFoundException;
+
+@Service
+public class CategoryService {
+    private final CategoryRepository repository;
+
+    public CategoryService(CategoryRepository repository) {
+        this.repository = repository;
+    }
+
+    private void checkName(String name) {
+        if (repository.findByNameIgnoreCase(name).isPresent()) {
+            throw new IllegalArgumentException(
+                    String.format("Category with name %s is already exists", name));
+        }
+    }
+
+    @Transactional(readOnly = true)
+    public List<CategoryEntity> getAll() {
+        Sort sortById = Sort.by(Sort.Direction.ASC, "id");
+        return repository.findAll(sortById);
+    }
+
+    @Transactional(readOnly = true)
+    public CategoryEntity get(long id) {
+        return repository.findById(id)
+                .orElseThrow(() -> new NotFoundException(CategoryEntity.class, id));
+    }
+
+    @Transactional
+    public CategoryEntity create(CategoryEntity entity) {
+        if (entity == null) {
+            throw new IllegalArgumentException("Entity is null");
+        }
+        checkName(entity.getName());
+        return repository.save(entity);
+    }
+
+    @Transactional
+    public CategoryEntity update(long id, CategoryEntity entity) {
+        final CategoryEntity existsEntity = get(id);
+        existsEntity.setName(entity.getName());
+        return repository.save(existsEntity);
+    }
+
+    @Transactional
+    public CategoryEntity delete(long id) {
+        final CategoryEntity existsEntity = get(id);
+        repository.delete(existsEntity);
+        return existsEntity;
+    }
+}

src/main/java/com/example/backend/core/api/AdminController.java

@@ -0,0 +1,19 @@
+package com.example.backend.core.api;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+@Controller
+@RequestMapping(AdminController.URL)
+public class AdminController {
+    public static final String URL = "/admin";
+
+    private static final String ADMIN_VIEW = "admin";
+
+    @GetMapping
+    public String getContacts(Model model) {
+        return ADMIN_VIEW;
+    }
+}

src/main/java/com/example/backend/core/api/ContactsController.java

@@ -0,0 +1,19 @@
+package com.example.backend.core.api;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+@Controller
+@RequestMapping(ContactsController.URL)
+public class ContactsController {
+    public static final String URL = "/contacts";
+
+    private static final String CONTACTS_VIEW = "contacts";
+
+    @GetMapping
+    public String getContacts(Model model) {
+        return CONTACTS_VIEW;
+    }
+}

src/main/java/com/example/backend/core/api/GlobalController.java

@@ -0,0 +1,28 @@
+package com.example.backend.core.api;
+
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.bind.annotation.ModelAttribute;
+
+import com.example.backend.core.session.SessionCart;
+
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpSession;
+
+@ControllerAdvice
+public class GlobalController {
+    private final SessionCart cart;
+
+    public GlobalController(SessionCart cart) {
+        this.cart = cart;
+    }
+
+    @ModelAttribute("servletPath")
+    String getRequestServletPath(HttpServletRequest request) {
+        return request.getServletPath();
+    }
+
+    @ModelAttribute("totalCart")
+    int getTotalCart(HttpSession session) {
+        return cart.getCount();
+    }
+}

src/main/java/com/example/backend/core/api/PageAttributesMapper.java

@@ -0,0 +1,18 @@
+package com.example.backend.core.api;
+
+import java.util.Map;
+import java.util.function.Function;
+
+import org.springframework.data.domain.Page;
+
+public class PageAttributesMapper {
+    private PageAttributesMapper() {
+    }
+
+    public static <E, D> Map<String, Object> toAttributes(Page<E> page, Function<E, D> mapper) {
+        return Map.of(
+                "items", page.getContent().stream().map(mapper::apply).toList(),
+                "currentPage", page.getNumber(),
+                "totalPages", page.getTotalPages());
+    }
+}

src/main/java/com/example/backend/core/configuration/Constants.java

@@ -0,0 +1,19 @@
+package com.example.backend.core.configuration;
+
+public class Constants {
+    public static final String SEQUENCE_NAME = "hibernate_sequence";
+
+    public static final int DEFAULT_PAGE_SIZE = 8;
+
+    public static final String REDIRECT_VIEW = "redirect:";
+
+    public static final String ADMIN_PREFIX = "/admin";
+
+    public static final String LOGIN_URL = "/login";
+    public static final String LOGOUT_URL = "/logout";
+
+    public static final String DEFAULT_PASSWORD = "123456";
+
+    private Constants() {
+    }
+}

src/main/java/com/example/backend/core/configuration/MapperConfiguration.java

@@ -0,0 +1,26 @@
+package com.example.backend.core.configuration;
+
+import org.modelmapper.ModelMapper;
+import org.modelmapper.PropertyMap;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+import com.example.backend.core.model.BaseEntity;
+import com.example.backend.orders.api.OrderDto;
+import com.example.backend.orders.model.OrderEntity;
+
+@Configuration
+public class MapperConfiguration {
+    @Bean
+    ModelMapper modelMapper() {
+        ModelMapper modelMapper = new ModelMapper();
+        modelMapper.typeMap(OrderEntity.class, OrderDto.class).addMappings(mapper -> mapper.skip(OrderDto::setBooks));
+        modelMapper.addMappings(new PropertyMap<Object, BaseEntity>() {
+            @Override
+            protected void configure() {
+                skip(destination.getId());
+            }
+        });
+        return modelMapper;
+    }
+}

src/main/java/com/example/backend/core/configuration/WebConfiguration.java

@@ -0,0 +1,13 @@
+package com.example.backend.core.configuration;
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+@Configuration
+public class WebConfiguration implements WebMvcConfigurer {
+    @Override
+    public void addViewControllers(ViewControllerRegistry registry) {
+        registry.addViewController("/login").setViewName("login");
+    }
+}

src/main/java/com/example/backend/core/error/AdviceController.java

@@ -0,0 +1,53 @@
+package com.example.backend.core.error;
+
+import java.util.Map;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.core.annotation.AnnotationUtils;
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.ResponseStatus;
+import org.springframework.web.servlet.ModelAndView;
+
+import jakarta.servlet.http.HttpServletRequest;
+
+@ControllerAdvice
+public class AdviceController {
+    private final Logger log = LoggerFactory.getLogger(AdviceController.class);
+
+    private static Throwable getRootCause(Throwable throwable) {
+        Throwable rootCause = throwable;
+        while (rootCause.getCause() != null && rootCause.getCause() != rootCause) {
+            rootCause = rootCause.getCause();
+        }
+        return rootCause;
+    }
+
+    private static Map<String, Object> getAttributes(HttpServletRequest request, Throwable throwable) {
+        final Throwable rootCause = getRootCause(throwable);
+        final StackTraceElement firstError = rootCause.getStackTrace()[0];
+        return Map.of(
+                "message", rootCause.getMessage(),
+                "url", request.getRequestURL(),
+                "exception", rootCause.getClass().getName(),
+                "file", firstError.getFileName(),
+                "method", firstError.getMethodName(),
+                "line", firstError.getLineNumber());
+    }
+
+    @ExceptionHandler(value = Exception.class)
+    public ModelAndView defaultErrorHandler(HttpServletRequest request, Throwable throwable) throws Throwable {
+        if (AnnotationUtils.findAnnotation(throwable.getClass(),
+                ResponseStatus.class) != null) {
+            throw throwable;
+        }
+
+        log.error("{}", throwable.getMessage());
+        throwable.printStackTrace();
+        final ModelAndView model = new ModelAndView();
+        model.addAllObjects(getAttributes(request, throwable));
+        model.setViewName("error");
+        return model;
+    }
+}

src/main/java/com/example/backend/core/error/NotFoundException.java

@@ -0,0 +1,7 @@
+package com.example.backend.core.error;
+
+public class NotFoundException extends RuntimeException {
+    public <T> NotFoundException(Class<T> clazz, Long id) {
+        super(String.format("%s with id [%s] is not found or not exists", clazz.getSimpleName(), id));
+    }
+}

src/main/java/com/example/backend/core/model/BaseEntity.java

@@ -0,0 +1,28 @@
+package com.example.backend.core.model;
+
+import com.example.backend.core.configuration.Constants;
+
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.MappedSuperclass;
+import jakarta.persistence.SequenceGenerator;
+
+@MappedSuperclass
+public abstract class BaseEntity {
+    @Id
+    @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = Constants.SEQUENCE_NAME)
+    @SequenceGenerator(name = Constants.SEQUENCE_NAME, sequenceName = Constants.SEQUENCE_NAME, allocationSize = 1)
+    protected Long id;
+
+    protected BaseEntity() {
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+}

src/main/java/com/example/backend/core/security/SecurityConfiguration.java

@@ -0,0 +1,71 @@
+package com.example.backend.core.security;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.security.authentication.dao.DaoAuthenticationProvider;
+import org.springframework.security.config.Customizer;
+import org.springframework.security.config.annotation.web.builders.HttpSecurity;
+import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
+import org.springframework.security.config.annotation.web.configurers.AbstractHttpConfigurer;
+import org.springframework.security.config.annotation.web.configurers.HeadersConfigurer.FrameOptionsConfig;
+import org.springframework.security.core.userdetails.UserDetailsService;
+import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
+import org.springframework.security.crypto.password.PasswordEncoder;
+import org.springframework.security.web.SecurityFilterChain;
+
+import com.example.backend.core.configuration.Constants;
+import com.example.backend.users.api.UserSignupController;
+import com.example.backend.users.model.UserRole;
+
+@Configuration
+@EnableWebSecurity
+public class SecurityConfiguration {
+    @Bean
+    SecurityFilterChain filterChain(HttpSecurity httpSecurity) throws Exception {
+        httpSecurity.headers(headers -> headers.frameOptions(FrameOptionsConfig::sameOrigin));
+        httpSecurity.csrf(AbstractHttpConfigurer::disable);
+        httpSecurity.cors(Customizer.withDefaults());
+
+        httpSecurity.authorizeHttpRequests(requests -> requests
+                .requestMatchers("/css/**", "/webjars/**", "/*.svg", "/*.png", "/static/**")
+                .permitAll());
+
+        httpSecurity.authorizeHttpRequests(requests -> requests
+                .requestMatchers(Constants.ADMIN_PREFIX + "/**")
+                .hasAnyRole(UserRole.ADMIN.name(), UserRole.SUPERADMIN.name())
+                .requestMatchers("/h2-console/**").hasAnyRole(UserRole.ADMIN.name(), UserRole.SUPERADMIN.name())
+                .requestMatchers(UserSignupController.URL).anonymous()
+                .requestMatchers(Constants.LOGIN_URL).anonymous()
+                .requestMatchers("/cart/**").permitAll()
+                .requestMatchers("/catalog/**").permitAll()
+                .requestMatchers("/catalog-mobile/**").permitAll()
+                .requestMatchers("/contacts/**").permitAll()
+                .requestMatchers("/").permitAll()
+                .requestMatchers("/product-card/**").permitAll()
+                .requestMatchers("/search/**").permitAll()
+                .anyRequest().authenticated());
+
+        httpSecurity.formLogin(formLogin -> formLogin
+                .loginPage(Constants.LOGIN_URL));
+
+        httpSecurity.rememberMe(rememberMe -> rememberMe.key("uniqueAndSecret"));
+
+        httpSecurity.logout(logout -> logout
+                .deleteCookies("JSESSIONID"));
+
+        return httpSecurity.build();
+    }
+
+    @Bean
+    DaoAuthenticationProvider authenticationProvider(UserDetailsService userDetailsService) {
+        final DaoAuthenticationProvider authProvider = new DaoAuthenticationProvider();
+        authProvider.setUserDetailsService(userDetailsService);
+        authProvider.setPasswordEncoder(passwordEncoder());
+        return authProvider;
+    }
+
+    @Bean
+    PasswordEncoder passwordEncoder() {
+        return new BCryptPasswordEncoder();
+    }
+}

src/main/java/com/example/backend/core/security/UserPrincipal.java

@@ -0,0 +1,64 @@
+package com.example.backend.core.security;
+
+import java.util.Collection;
+import java.util.Set;
+
+import org.springframework.security.core.GrantedAuthority;
+import org.springframework.security.core.userdetails.UserDetails;
+
+import com.example.backend.users.model.UserEntity;
+
+public class UserPrincipal implements UserDetails {
+    private final long id;
+    private final String username;
+    private final String password;
+    private final Set<? extends GrantedAuthority> roles;
+    private final boolean active;
+
+    public UserPrincipal(UserEntity user) {
+        this.id = user.getId();
+        this.username = user.getLogin();
+        this.password = user.getPassword();
+        this.roles = Set.of(user.getRole());
+        this.active = true;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    @Override
+    public String getUsername() {
+        return username;
+    }
+
+    @Override
+    public String getPassword() {
+        return password;
+    }
+
+    @Override
+    public Collection<? extends GrantedAuthority> getAuthorities() {
+        return roles;
+    }
+
+    @Override
+    public boolean isEnabled() {
+        return active;
+    }
+
+    @Override
+    public boolean isAccountNonExpired() {
+        return isEnabled();
+    }
+
+    @Override
+    public boolean isAccountNonLocked() {
+        return isEnabled();
+    }
+
+    @Override
+    public boolean isCredentialsNonExpired() {
+        return isEnabled();
+    }
+}

src/main/java/com/example/backend/core/session/SessionCart.java

@@ -0,0 +1,18 @@
+package com.example.backend.core.session;
+
+import java.util.HashMap;
+
+import com.example.backend.orders.api.BookCountDto;
+
+public class SessionCart extends HashMap<Long, BookCountDto> {
+    public int getCount() {
+        return this.size();
+    }
+
+    public double getSum() {
+        return this.values().stream()
+                .map(item -> item.getCount() * item.getBook().getPrice())
+                .mapToDouble(Double::doubleValue)
+                .sum();
+    }
+}

src/main/java/com/example/backend/core/session/SessionHelper.java

@@ -0,0 +1,16 @@
+package com.example.backend.core.session;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Scope;
+import org.springframework.context.annotation.ScopedProxyMode;
+import org.springframework.web.context.WebApplicationContext;
+
+@Configuration
+public class SessionHelper {
+    @Bean
+    @Scope(value = WebApplicationContext.SCOPE_SESSION, proxyMode = ScopedProxyMode.TARGET_CLASS)
+    SessionCart todos() {
+        return new SessionCart();
+    }
+}

src/main/java/com/example/backend/core/utils/Formatter.java

@@ -0,0 +1,20 @@
+package com.example.backend.core.utils;
+
+import java.util.Date;
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+
+public final class Formatter {
+    private Formatter() {
+    }
+
+    private static SimpleDateFormat dateFormatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
+
+    public static String format(Date date) {
+        return dateFormatter.format(date);
+    }
+
+    public static Date parse(String date) throws ParseException {
+        return dateFormatter.parse(date);
+    }
+}

src/main/java/com/example/backend/core/utils/NumMorph.java

@@ -0,0 +1,23 @@
+package com.example.backend.core.utils;
+
+public final class NumMorph {
+    private NumMorph() {
+    }
+
+    public static String numMorph(int n, String f1, String f2, String f3) {
+        int n1 = Math.abs(n) % 100;
+
+        if (n1 >= 11 && n1 <= 19) {
+            return f3;
+        }
+
+        int n2 = n % 10;
+        if (n2 == 1) {
+            return f1;
+        }
+        if (n2 > 1 && n2 < 5) {
+            return f2;
+        }
+        return f3;
+    }
+}

src/main/java/com/example/backend/core/utils/ToBase64.java

@@ -0,0 +1,24 @@
+package com.example.backend.core.utils;
+
+import org.springframework.web.multipart.MultipartFile;
+
+import java.io.IOException;
+import java.util.Base64;
+
+public final class ToBase64 {
+    private ToBase64() {
+    }
+
+    public static String getBase64FromFile(MultipartFile file) {
+        if (file != null && !file.isEmpty()) {
+            try {
+                String mimeType = file.getContentType();
+                byte[] bytes = file.getBytes();
+                return "data:" + mimeType + ";base64," + Base64.getEncoder().encodeToString(bytes);
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        }
+        return "";
+    }
+}

src/main/java/com/example/backend/orders/api/BookCountDto.java

@@ -0,0 +1,24 @@
+package com.example.backend.orders.api;
+
+import com.example.backend.books.api.BookDto;
+
+public class BookCountDto {
+    private BookDto book;
+    private Integer count;
+
+    public BookDto getBook() {
+        return book;
+    }
+
+    public void setBook(BookDto book) {
+        this.book = book;
+    }
+
+    public Integer getCount() {
+        return count;
+    }
+
+    public void setCount(Integer count) {
+        this.count = count;
+    }
+}

src/main/java/com/example/backend/orders/api/OrderBookDto.java

@@ -0,0 +1,22 @@
+package com.example.backend.orders.api;
+
+public class OrderBookDto {
+    private Long bookId;
+    private Integer count;
+
+    public Long getBookId() {
+        return bookId;
+    }
+
+    public void setBookId(Long bookId) {
+        this.bookId = bookId;
+    }
+
+    public Integer getCount() {
+        return count;
+    }
+
+    public void setCount(Integer count) {
+        this.count = count;
+    }
+}

src/main/java/com/example/backend/orders/api/OrderController.java

@@ -0,0 +1,92 @@
+package com.example.backend.orders.api;
+
+import java.util.Map;
+
+import org.modelmapper.ModelMapper;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.servlet.mvc.support.RedirectAttributes;
+
+import com.example.backend.books.api.BookDto;
+import com.example.backend.books.model.BookEntity;
+import com.example.backend.core.api.PageAttributesMapper;
+import com.example.backend.core.configuration.Constants;
+import com.example.backend.core.utils.Formatter;
+import com.example.backend.orders.model.OrderEntity;
+import com.example.backend.orders.service.OrderService;
+
+@Controller
+@RequestMapping(OrderController.URL)
+public class OrderController {
+    public static final String URL = Constants.ADMIN_PREFIX + "/order";
+    private static final String ORDER_VIEW = "order";
+    private static final String ORDER_CHECK_VIEW = "order-check";
+    private static final String ORDER_ATTRIBUTE = "order";
+    private static final String PAGE_ATTRIBUTE = "page";
+
+    private final OrderService orderService;
+    private final ModelMapper modelMapper;
+
+    public OrderController(OrderService orderService, ModelMapper modelMapper) {
+        this.orderService = orderService;
+        this.modelMapper = modelMapper;
+    }
+
+    private BookDto toBookDto(BookEntity entity) {
+        return modelMapper.map(entity, BookDto.class);
+    }
+
+    private OrderDto toDto(OrderEntity entity) {
+        final OrderDto dto = modelMapper.map(entity, OrderDto.class);
+        dto.setDate(Formatter.format(entity.getDate()));
+        dto.setSum(orderService.getSum(entity.getUser().getId(), entity.getId()));
+        dto.setCount(orderService.getFullCount(entity.getUser().getId(), entity.getId()));
+        dto.setBooks(orderService.getOrderBooks(entity.getUser().getId(), entity
+                .getId()).stream()
+                .map(orderBook -> {
+                    BookCountDto bookCountDto = new BookCountDto();
+                    bookCountDto.setBook(toBookDto(orderBook.getBook()));
+                    bookCountDto.setCount(orderBook.getCount());
+                    return bookCountDto;
+                })
+                .toList());
+        return dto;
+    }
+
+    @GetMapping
+    public String getAll(
+            @RequestParam(name = PAGE_ATTRIBUTE, defaultValue = "0") int page,
+            Model model) {
+        final Map<String, Object> attributes = PageAttributesMapper
+                .toAttributes(orderService.getAll(0L, page, Constants.DEFAULT_PAGE_SIZE),
+                        this::toDto);
+        model.addAllAttributes(attributes);
+        model.addAttribute(PAGE_ATTRIBUTE, page);
+        return ORDER_VIEW;
+    }
+
+    @GetMapping("/check/{id}")
+    public String checkOrder(
+            @PathVariable(name = "id") Long id,
+            @RequestParam(name = PAGE_ATTRIBUTE, defaultValue = "0") int page,
+            Model model) {
+        model.addAttribute(ORDER_ATTRIBUTE, toDto(orderService.get(0L, id)));
+        model.addAttribute(PAGE_ATTRIBUTE, page);
+        return ORDER_CHECK_VIEW;
+    }
+
+    @PostMapping("/delete/{id}")
+    public String delete(
+            @PathVariable(name = "id") Long id,
+            @RequestParam(name = PAGE_ATTRIBUTE, defaultValue = "0") int page,
+            RedirectAttributes redirectAttributes) {
+        redirectAttributes.addAttribute(PAGE_ATTRIBUTE, page);
+        orderService.delete(0L, id);
+        return Constants.REDIRECT_VIEW + URL;
+    }
+}

src/main/java/com/example/backend/orders/api/OrderDto.java

@@ -0,0 +1,60 @@
+package com.example.backend.orders.api;
+
+import java.util.List;
+
+public class OrderDto {
+    private Long id;
+    private Double sum;
+    private Integer count;
+    private String date;
+    private List<OrderBookDto> orderInfo;
+    private List<BookCountDto> books;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Double getSum() {
+        return sum;
+    }
+
+    public void setSum(Double sum) {
+        this.sum = sum;
+    }
+
+    public Integer getCount() {
+        return count;
+    }
+
+    public void setCount(Integer count) {
+        this.count = count;
+    }
+
+    public String getDate() {
+        return date;
+    }
+
+    public void setDate(String date) {
+        this.date = date;
+    }
+
+    public List<OrderBookDto> getOrderInfo() {
+        return orderInfo;
+    }
+
+    public void setOrderInfo(List<OrderBookDto> orderInfo) {
+        this.orderInfo = orderInfo;
+    }
+
+    public List<BookCountDto> getBooks() {
+        return books;
+    }
+
+    public void setBooks(List<BookCountDto> books) {
+        this.books = books;
+    }
+}

src/main/java/com/example/backend/orders/model/OrderEntity.java

@@ -0,0 +1,89 @@
+package com.example.backend.orders.model;
+
+import java.util.Date;
+import java.util.HashSet;
+import java.util.Objects;
+import java.util.Set;
+
+import com.example.backend.users.model.UserEntity;
+import com.example.backend.core.model.BaseEntity;
+import com.example.backend.ordersbooks.model.OrderBookEntity;
+
+import jakarta.persistence.CascadeType;
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.OneToMany;
+import jakarta.persistence.OrderBy;
+import jakarta.persistence.Table;
+
+@Entity
+@Table(name = "orders")
+public class OrderEntity extends BaseEntity {
+    @ManyToOne
+    @JoinColumn(name = "userId", nullable = false)
+    private UserEntity user;
+    @Column(nullable = false)
+    private Date date = new Date();
+    @OneToMany(mappedBy = "order", cascade = CascadeType.ALL, orphanRemoval = true)
+    @OrderBy("id ASC")
+    private Set<OrderBookEntity> orderBooks = new HashSet<>();
+
+    public OrderEntity() {
+    }
+
+    public UserEntity getUser() {
+        return user;
+    }
+
+    public void setUser(UserEntity user) {
+        this.user = user;
+        if (!user.getOrders().contains(this)) {
+            user.getOrders().add(this);
+        }
+    }
+
+    public Date getDate() {
+        return date;
+    }
+
+    public void setDate(Date date) {
+        this.date = date;
+    }
+
+    public Set<OrderBookEntity> getOrderBooks() {
+        return orderBooks;
+    }
+
+    public void addBook(OrderBookEntity orderBook) {
+        if (orderBook.getOrder() != this) {
+            orderBook.setOrder(this);
+        }
+        orderBooks.add(orderBook);
+    }
+
+    public void deleteBook(OrderBookEntity orderBook) {
+        if (orderBook.getOrder() != this) {
+            return;
+        }
+        orderBooks.remove(orderBook);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id, user.getId(), date);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj)
+            return true;
+        if (obj == null || getClass() != obj.getClass())
+            return false;
+        final OrderEntity other = (OrderEntity) obj;
+        return Objects.equals(other.getId(), id)
+                && Objects.equals(other.getUser().getId(), user.getId())
+                && Objects.equals(other.getDate(), date);
+    }
+}

src/main/java/com/example/backend/orders/repository/OrderRepository.java

@@ -0,0 +1,20 @@
+package com.example.backend.orders.repository;
+
+import java.util.List;
+import java.util.Optional;
+
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.repository.CrudRepository;
+import org.springframework.data.repository.PagingAndSortingRepository;
+
+import com.example.backend.orders.model.OrderEntity;
+
+public interface OrderRepository
+        extends CrudRepository<OrderEntity, Long>, PagingAndSortingRepository<OrderEntity, Long> {
+    Optional<OrderEntity> findOneByUserIdAndId(long userId, long id);
+
+    List<OrderEntity> findByUserId(long userId);
+
+    Page<OrderEntity> findByUserId(long userId, Pageable pageable);
+}

src/main/java/com/example/backend/orders/service/OrderService.java

@@ -0,0 +1,113 @@
+package com.example.backend.orders.service;
+
+import java.util.List;
+import java.util.Map;
+
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.data.domain.Pageable;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import com.example.backend.core.error.NotFoundException;
+import com.example.backend.orders.model.OrderEntity;
+import com.example.backend.orders.repository.OrderRepository;
+import com.example.backend.books.model.BookEntity;
+import com.example.backend.users.model.UserEntity;
+import com.example.backend.users.service.UserService;
+import com.example.backend.ordersbooks.model.OrderBookEntity;
+import com.example.backend.books.service.BookService;
+
+@Service
+public class OrderService {
+    private final OrderRepository repository;
+    private final UserService userService;
+    private final BookService bookService;
+
+    public OrderService(OrderRepository repository, UserService userService, BookService bookService) {
+        this.repository = repository;
+        this.userService = userService;
+        this.bookService = bookService;
+    }
+
+    @Transactional(readOnly = true)
+    public List<OrderEntity> getAll(Long userId) {
+        userService.get(userId);
+        return repository.findByUserId(userId);
+    }
+
+    @Transactional(readOnly = true)
+    public Page<OrderEntity> getAll(long userId, int page, int size) {
+        final Pageable pageRequest = PageRequest.of(page, size);
+        if (userId <= 0L) {
+            return repository.findAll(pageRequest);
+        }
+        userService.get(userId);
+        return repository.findByUserId(userId, pageRequest);
+    }
+
+    @Transactional(readOnly = true)
+    public OrderEntity get(long userId, long id) {
+        if (userId <= 0L) {
+            return repository.findById(id)
+                    .orElseThrow(() -> new NotFoundException(OrderEntity.class, id));
+        }
+        userService.get(userId);
+        return repository.findOneByUserIdAndId(userId, id)
+                .orElseThrow(() -> new NotFoundException(OrderEntity.class, id));
+    }
+
+    @Transactional
+    public OrderEntity create(long userId, OrderEntity entity, Map<Long, Integer> booksIdsCount) {
+        if (entity == null) {
+            throw new IllegalArgumentException("Entity is null");
+        }
+        final UserEntity existsUser = userService.get(userId);
+        entity.setUser(existsUser);
+        List<BookEntity> result = bookService.getAll(0L).stream()
+                .filter(book -> booksIdsCount.containsKey(book.getId()))
+                .toList();
+        result.forEach(book -> {
+            final OrderBookEntity orderBook = new OrderBookEntity(entity, book, booksIdsCount.get(book.getId()));
+            orderBook.setOrder(entity);
+            orderBook.setBook(book);
+        });
+        return repository.save(entity);
+    }
+
+    @Transactional
+    public OrderEntity delete(long userId, long id) {
+        if (userId <= 0L) {
+            final OrderEntity existsEntity = get(0, id);
+            repository.delete(existsEntity);
+            return existsEntity;
+        }
+        userService.get(userId);
+        final OrderEntity existsEntity = get(userId, id);
+        repository.delete(existsEntity);
+        return existsEntity;
+    }
+
+    @Transactional(readOnly = true)
+    public Double getSum(long userId, long id) {
+        userService.get(userId);
+        return get(userId, id).getOrderBooks().stream()
+                .mapToDouble(orderBook -> orderBook.getCount() * orderBook.getBook().getPrice())
+                .sum();
+    }
+
+    @Transactional(readOnly = true)
+    public Integer getFullCount(long userId, long id) {
+        userService.get(userId);
+        return get(userId, id).getOrderBooks().stream()
+                .mapToInt(OrderBookEntity::getCount)
+                .sum();
+    }
+
+    @Transactional(readOnly = true)
+    public List<OrderBookEntity> getOrderBooks(long userId, long id) {
+        userService.get(userId);
+        return get(userId, id).getOrderBooks().stream()
+                .toList();
+    }
+}

src/main/java/com/example/backend/ordersbooks/model/OrderBookEntity.java

@@ -0,0 +1,96 @@
+package com.example.backend.ordersbooks.model;
+
+import java.util.Objects;
+
+import com.example.backend.books.model.BookEntity;
+import com.example.backend.orders.model.OrderEntity;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.EmbeddedId;
+import jakarta.persistence.Entity;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.MapsId;
+import jakarta.persistence.Table;
+
+@Entity
+@Table(name = "orders_books")
+public class OrderBookEntity {
+    @EmbeddedId
+    private OrderBookId id = new OrderBookId();
+    @ManyToOne
+    @MapsId("orderId")
+    @JoinColumn(name = "order_id")
+    private OrderEntity order;
+    @ManyToOne
+    @MapsId("bookId")
+    @JoinColumn(name = "book_id")
+    private BookEntity book;
+    @Column(nullable = false)
+    private Integer count;
+
+    public OrderBookEntity() {
+    }
+
+    public OrderBookEntity(OrderEntity order, BookEntity book, Integer count) {
+        this.order = order;
+        this.book = book;
+        this.count = count;
+    }
+
+    public OrderBookId getId() {
+        return id;
+    }
+
+    public void setId(OrderBookId id) {
+        this.id = id;
+    }
+
+    public OrderEntity getOrder() {
+        return order;
+    }
+
+    public void setOrder(OrderEntity order) {
+        this.order = order;
+        if (!order.getOrderBooks().contains(this)) {
+            order.getOrderBooks().add(this);
+        }
+    }
+
+    public BookEntity getBook() {
+        return book;
+    }
+
+    public void setBook(BookEntity book) {
+        this.book = book;
+        if (!book.getOrderBooks().contains(this)) {
+            book.getOrderBooks().add(this);
+        }
+    }
+
+    public Integer getCount() {
+        return count;
+    }
+
+    public void setCount(Integer count) {
+        this.count = count;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id, order.getId(), book.getId(), count);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj)
+            return true;
+        if (obj == null || getClass() != obj.getClass())
+            return false;
+        OrderBookEntity other = (OrderBookEntity) obj;
+        return Objects.equals(id, other.id)
+                && Objects.equals(order.getId(), other.order.getId())
+                && Objects.equals(book.getId(), other.book.getId())
+                && count == other.count;
+    }
+}

src/main/java/com/example/backend/ordersbooks/model/OrderBookId.java

@@ -0,0 +1,55 @@
+package com.example.backend.ordersbooks.model;
+
+import java.util.Objects;
+import java.util.Optional;
+
+import jakarta.persistence.Embeddable;
+
+@Embeddable
+public class OrderBookId {
+    private Long orderId;
+    private Long bookId;
+
+    public OrderBookId() {
+    }
+
+    public OrderBookId(Long orderId, Long bookId) {
+        this.orderId = orderId;
+        this.bookId = bookId;
+    }
+
+    public Long getOrderId() {
+        return orderId;
+    }
+
+    public void setOrderId(Long orderId) {
+        this.orderId = orderId;
+    }
+
+    public Long getBookId() {
+        return bookId;
+    }
+
+    public void setBookId(Long bookId) {
+        this.bookId = bookId;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(
+                Optional.ofNullable(orderId).orElse(0L),
+                Optional.ofNullable(bookId).orElse(0L));
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj)
+            return true;
+        if (obj == null || getClass() != obj.getClass())
+            return false;
+        OrderBookId other = (OrderBookId) obj;
+        return Objects.equals(orderId, other.orderId)
+                && Objects.equals(bookId, other.bookId);
+    }
+
+}

src/main/java/com/example/backend/users/api/UserCartController.java

@@ -0,0 +1,102 @@
+package com.example.backend.users.api;
+
+import java.util.Map;
+import java.util.Map.Entry;
+import java.util.stream.Collectors;
+
+import org.springframework.security.core.annotation.AuthenticationPrincipal;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+
+import com.example.backend.core.configuration.Constants;
+import com.example.backend.core.security.UserPrincipal;
+import com.example.backend.core.session.SessionCart;
+import com.example.backend.core.utils.NumMorph;
+import com.example.backend.orders.api.BookCountDto;
+import com.example.backend.orders.model.OrderEntity;
+import com.example.backend.orders.service.OrderService;
+
+@Controller
+@RequestMapping(UserCartController.URL)
+public class UserCartController {
+    public static final String URL = "/cart";
+
+    private static final String CART_VIEW = "cart";
+    private static final String CART_ATTRIBUTE = "cart";
+
+    private final OrderService orderService;
+    private final SessionCart cart;
+
+    public UserCartController(
+            OrderService orderService,
+            SessionCart cart) {
+        this.orderService = orderService;
+        this.cart = cart;
+    }
+
+    @GetMapping
+    public String getCart(Model model) {
+        model.addAttribute(CART_ATTRIBUTE, cart.values());
+        model.addAttribute("count", cart.getCount());
+        model.addAttribute("sum", cart.getSum());
+        model.addAttribute("linesText", NumMorph.numMorph(cart.getCount(), "товар", "товара", "товаров"));
+        return CART_VIEW;
+    }
+
+    @PostMapping("/clear")
+    public String clearCart(
+            @RequestParam(name = "bookId", defaultValue = "0") long bookId,
+            Model model) {
+        if (bookId <= 0) {
+            cart.clear();
+        } else {
+            cart.remove(bookId);
+        }
+        return Constants.REDIRECT_VIEW + URL;
+    }
+
+    @PostMapping("/increase")
+    public String increaseCartCount(
+            @RequestParam(name = "bookId") long bookId) {
+        BookCountDto book = cart.get(bookId);
+        if (book != null) {
+            book.setCount(book.getCount() + 1);
+        }
+        return Constants.REDIRECT_VIEW + URL;
+    }
+
+    @PostMapping("/decrease")
+    public String decreaseCartCount(
+            @RequestParam(name = "bookId") long bookId) {
+        BookCountDto book = cart.get(bookId);
+        if (book != null) {
+            book.setCount(book.getCount() - 1);
+        }
+        final Map<Long, BookCountDto> filteredCart = cart.entrySet()
+                .stream()
+                .filter(item -> item.getValue().getCount() > 0)
+                .collect(Collectors.toMap(Entry::getKey, Entry::getValue));
+        cart.clear();
+        cart.putAll(filteredCart);
+        return Constants.REDIRECT_VIEW + URL;
+    }
+
+    @PostMapping("/save")
+    public String saveCart(
+            Model model,
+            @AuthenticationPrincipal UserPrincipal principal) {
+        Map<Long, Integer> orderMap = cart.entrySet()
+                .stream()
+                .collect(Collectors.toMap(
+                        Entry::getKey,
+                        entry -> entry.getValue().getCount()));
+        orderService.create(principal.getId(), new OrderEntity(), orderMap);
+        cart.clear();
+        return Constants.REDIRECT_VIEW + URL;
+    }
+
+}

src/main/java/com/example/backend/users/api/UserController.java

@@ -0,0 +1,102 @@
+package com.example.backend.users.api;
+
+import java.util.Map;
+
+import org.modelmapper.ModelMapper;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.validation.BindingResult;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.ModelAttribute;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.servlet.mvc.support.RedirectAttributes;
+
+import com.example.backend.core.api.PageAttributesMapper;
+import com.example.backend.core.configuration.Constants;
+import com.example.backend.users.model.UserEntity;
+import com.example.backend.users.service.UserService;
+
+import jakarta.validation.Valid;
+
+@Controller
+@RequestMapping(UserController.URL)
+public class UserController {
+    public static final String URL = Constants.ADMIN_PREFIX + "/user";
+    private static final String USER_VIEW = "user";
+    private static final String USER_EDIT_VIEW = "user-edit";
+    private static final String PAGE_ATTRIBUTE = "page";
+    private static final String USER_ATTRIBUTE = "user";
+
+    private final UserService userService;
+    private final ModelMapper modelMapper;
+
+    public UserController(UserService userService, ModelMapper modelMapper) {
+        this.userService = userService;
+        this.modelMapper = modelMapper;
+    }
+
+    private UserDto toDto(UserEntity entity) {
+        return modelMapper.map(entity, UserDto.class);
+    }
+
+    private UserEntity toEntity(UserDto dto) {
+        return modelMapper.map(dto, UserEntity.class);
+    }
+
+    @GetMapping
+    public String getAll(
+            @RequestParam(name = PAGE_ATTRIBUTE, defaultValue = "0") int page,
+            Model model) {
+        final Map<String, Object> attributes = PageAttributesMapper.toAttributes(
+                userService.getAll(page, Constants.DEFAULT_PAGE_SIZE), this::toDto);
+        model.addAllAttributes(attributes);
+        model.addAttribute(PAGE_ATTRIBUTE, page);
+        return USER_VIEW;
+    }
+
+    @GetMapping("/edit/{id}")
+    public String update(
+            @PathVariable(name = "id") Long id,
+            @RequestParam(name = PAGE_ATTRIBUTE, defaultValue = "0") int page,
+            Model model) {
+        if (id <= 0) {
+            throw new IllegalArgumentException();
+        }
+        model.addAttribute(USER_ATTRIBUTE, toDto(userService.get(id)));
+        model.addAttribute(PAGE_ATTRIBUTE, page);
+        return USER_EDIT_VIEW;
+    }
+
+    @PostMapping("/edit/{id}")
+    public String update(
+            @PathVariable(name = "id") Long id,
+            @RequestParam(name = PAGE_ATTRIBUTE, defaultValue = "0") int page,
+            @ModelAttribute(name = USER_ATTRIBUTE) @Valid UserDto user,
+            BindingResult bindingResult,
+            Model model,
+            RedirectAttributes redirectAttributes) {
+        if (bindingResult.hasErrors()) {
+            model.addAttribute(PAGE_ATTRIBUTE, page);
+            return USER_EDIT_VIEW;
+        }
+        if (id <= 0) {
+            throw new IllegalArgumentException();
+        }
+        redirectAttributes.addAttribute(PAGE_ATTRIBUTE, page);
+        userService.update(id, toEntity(user));
+        return Constants.REDIRECT_VIEW + URL;
+    }
+
+    @PostMapping("/delete/{id}")
+    public String delete(
+            @PathVariable(name = "id") Long id,
+            @RequestParam(name = PAGE_ATTRIBUTE, defaultValue = "0") int page,
+            RedirectAttributes redirectAttributes) {
+        redirectAttributes.addAttribute(PAGE_ATTRIBUTE, page);
+        userService.delete(id);
+        return Constants.REDIRECT_VIEW + URL;
+    }
+}

src/main/java/com/example/backend/users/api/UserDto.java

@@ -0,0 +1,78 @@
+package com.example.backend.users.api;
+
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.Size;
+
+public class UserDto {
+    private Long id;
+    @NotBlank
+    @Size(min = 3, max = 20)
+    private String login;
+    @NotBlank
+    @Size(min = 5, max = 254)
+    private String email;
+    @NotBlank
+    @Size(min = 6, max = 60)
+    private String password;
+    @NotBlank
+    private String firstname;
+    @NotBlank
+    private String lastname;
+    private String role;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getLogin() {
+        return login;
+    }
+
+    public void setLogin(String name) {
+        this.login = name;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+
+    public String getFirstname() {
+        return firstname;
+    }
+
+    public void setFirstname(String firstname) {
+        this.firstname = firstname;
+    }
+
+    public String getLastname() {
+        return lastname;
+    }
+
+    public void setLastname(String lastname) {
+        this.lastname = lastname;
+    }
+
+    public String getRole() {
+        return role;
+    }
+
+    public void setRole(String role) {
+        this.role = role;
+    }
+}

src/main/java/com/example/backend/users/api/UserProfileController.java

@@ -0,0 +1,118 @@
+package com.example.backend.users.api;
+
+import org.modelmapper.ModelMapper;
+import org.springframework.security.core.annotation.AuthenticationPrincipal;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.validation.BindingResult;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.ModelAttribute;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.servlet.mvc.support.RedirectAttributes;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+import com.example.backend.books.api.BookDto;
+import com.example.backend.books.model.BookEntity;
+import com.example.backend.core.api.PageAttributesMapper;
+import com.example.backend.core.configuration.Constants;
+import com.example.backend.core.security.UserPrincipal;
+import com.example.backend.core.utils.Formatter;
+import com.example.backend.orders.api.BookCountDto;
+import com.example.backend.orders.api.OrderDto;
+import com.example.backend.orders.model.OrderEntity;
+import com.example.backend.orders.service.OrderService;
+import com.example.backend.users.model.UserEntity;
+import com.example.backend.users.service.UserService;
+
+import jakarta.validation.Valid;
+
+@Controller
+@RequestMapping(UserProfileController.URL)
+public class UserProfileController {
+    public static final String URL = "/profile";
+
+    private static final String PROFILE_VIEW = "profile";
+    private static final String PROFILEEDIT_VIEW = "profile-edit";
+
+    private static final String PAGE_ATTRIBUTE = "page";
+    private static final String USER_ATTRIBUTE = "user";
+
+    private final UserService userService;
+    private final OrderService orderService;
+    private final ModelMapper modelMapper;
+
+    public UserProfileController(
+            UserService userService,
+            OrderService orderService,
+            ModelMapper modelMapper) {
+        this.userService = userService;
+        this.orderService = orderService;
+        this.modelMapper = modelMapper;
+    }
+
+    private UserEntity toUserEntity(UserDto dto) {
+        return modelMapper.map(dto, UserEntity.class);
+    }
+
+    private UserDto toUserDto(UserEntity entity) {
+        return modelMapper.map(entity, UserDto.class);
+    }
+
+    private BookDto toBookDto(BookEntity entity) {
+        return modelMapper.map(entity, BookDto.class);
+    }
+
+    private OrderDto toOrderDto(OrderEntity entity) {
+        final OrderDto dto = modelMapper.map(entity, OrderDto.class);
+        dto.setDate(Formatter.format(entity.getDate()));
+        dto.setSum(orderService.getSum(entity.getUser().getId(), entity.getId()));
+        dto.setCount(orderService.getFullCount(entity.getUser().getId(), entity.getId()));
+        dto.setBooks(orderService.getOrderBooks(entity.getUser().getId(), entity
+                .getId()).stream()
+                .map(orderBook -> {
+                    BookCountDto bookCountDto = new BookCountDto();
+                    bookCountDto.setBook(toBookDto(orderBook.getBook()));
+                    bookCountDto.setCount(orderBook.getCount());
+                    return bookCountDto;
+                })
+                .toList());
+        return dto;
+    }
+
+    @GetMapping
+    public String getProfile(@RequestParam(name = PAGE_ATTRIBUTE, defaultValue = "0") int page, Model model,
+            @AuthenticationPrincipal UserPrincipal principal) {
+        model.addAttribute(USER_ATTRIBUTE, toUserDto(userService.get(principal.getId())));
+        model.addAttribute(PAGE_ATTRIBUTE, page);
+        model.addAllAttributes(PageAttributesMapper.toAttributes(
+                orderService.getAll(principal.getId(), page, 3),
+                this::toOrderDto));
+        return PROFILE_VIEW;
+    }
+
+    @GetMapping("/edit")
+    public String changeUserInfo(@RequestParam(name = PAGE_ATTRIBUTE, defaultValue = "0") int page, Model model,
+            @AuthenticationPrincipal UserPrincipal principal) {
+        model.addAttribute(USER_ATTRIBUTE, toUserDto(userService.get(principal.getId())));
+        model.addAttribute(PAGE_ATTRIBUTE, page);
+        return PROFILEEDIT_VIEW;
+    }
+
+    @PostMapping("/edit")
+    public String update(
+            @RequestParam(name = PAGE_ATTRIBUTE, defaultValue = "0") int page,
+            @ModelAttribute(name = USER_ATTRIBUTE) @Valid UserDto user,
+            BindingResult bindingResult,
+            Model model,
+            RedirectAttributes redirectAttributes,
+            @AuthenticationPrincipal UserPrincipal principal) {
+        if (bindingResult.hasErrors()) {
+            model.addAttribute(PAGE_ATTRIBUTE, page);
+            return PROFILEEDIT_VIEW;
+        }
+        redirectAttributes.addAttribute(PAGE_ATTRIBUTE, page);
+        userService.update(principal.getId(), toUserEntity(user));
+        return Constants.REDIRECT_VIEW + URL;
+    }
+}

src/main/java/com/example/backend/users/api/UserSignupController.java

@@ -0,0 +1,65 @@
+package com.example.backend.users.api;
+
+import java.util.Objects;
+
+import org.modelmapper.ModelMapper;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.validation.BindingResult;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.ModelAttribute;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+import com.example.backend.core.configuration.Constants;
+import com.example.backend.users.model.UserEntity;
+import com.example.backend.users.service.UserService;
+
+import jakarta.validation.Valid;
+
+@Controller
+@RequestMapping(UserSignupController.URL)
+public class UserSignupController {
+    public static final String URL = "/signup";
+
+    private static final String SIGNUP_VIEW = "signup";
+    private static final String USER_ATTRIBUTE = "user";
+
+    private final UserService userService;
+    private final ModelMapper modelMapper;
+
+    public UserSignupController(
+            UserService userService,
+            ModelMapper modelMapper) {
+        this.userService = userService;
+        this.modelMapper = modelMapper;
+    }
+
+    private UserEntity toEntity(UserSignupDto dto) {
+        return modelMapper.map(dto, UserEntity.class);
+    }
+
+    @GetMapping
+    public String getSignup(Model model) {
+        model.addAttribute(USER_ATTRIBUTE, new UserSignupDto());
+        return SIGNUP_VIEW;
+    }
+
+    @PostMapping
+    public String signup(
+            @ModelAttribute(name = USER_ATTRIBUTE) @Valid UserSignupDto user,
+            BindingResult bindingResult,
+            Model model) {
+        if (bindingResult.hasErrors()) {
+            return SIGNUP_VIEW;
+        }
+        if (!Objects.equals(user.getPassword(), user.getPasswordConfirm())) {
+            bindingResult.rejectValue("password", "signup:passwords", "Пароли не совпадают.");
+            model.addAttribute(USER_ATTRIBUTE, user);
+            return SIGNUP_VIEW;
+        }
+        userService.create(toEntity(user));
+        return Constants.REDIRECT_VIEW + Constants.LOGIN_URL + "?signup";
+    }
+
+}

src/main/java/com/example/backend/users/api/UserSignupDto.java

@@ -0,0 +1,72 @@
+package com.example.backend.users.api;
+
+import jakarta.validation.constraints.Email;
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.Size;
+
+public class UserSignupDto {
+    @NotBlank
+    @Size(min = 3, max = 20)
+    private String login;
+    @NotBlank
+    @Email
+    private String email;
+    @NotBlank
+    private String firstname;
+    @NotBlank
+    private String lastname;
+    @NotBlank
+    @Size(min = 3, max = 20)
+    private String password;
+    @NotBlank
+    @Size(min = 3, max = 20)
+    private String passwordConfirm;
+
+    public String getLogin() {
+        return login;
+    }
+
+    public void setLogin(String login) {
+        this.login = login;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+    public String getFirstname() {
+        return firstname;
+    }
+
+    public void setFirstname(String firstname) {
+        this.firstname = firstname;
+    }
+
+    public String getLastname() {
+        return lastname;
+    }
+
+    public void setLastname(String lastname) {
+        this.lastname = lastname;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+
+    public String getPasswordConfirm() {
+        return passwordConfirm;
+    }
+
+    public void setPasswordConfirm(String passwordConfirm) {
+        this.passwordConfirm = passwordConfirm;
+    }
+}

src/main/java/com/example/backend/users/model/UserEntity.java

@@ -0,0 +1,126 @@
+package com.example.backend.users.model;
+
+import java.util.HashSet;
+import java.util.Objects;
+import java.util.Set;
+
+import jakarta.persistence.CascadeType;
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.OneToMany;
+import jakarta.persistence.OrderBy;
+import jakarta.persistence.Table;
+
+import com.example.backend.core.model.BaseEntity;
+import com.example.backend.orders.model.OrderEntity;
+
+@Entity
+@Table(name = "users")
+public class UserEntity extends BaseEntity {
+    @Column(nullable = false, unique = true, length = 20)
+    private String login;
+    @Column(nullable = false, unique = true, length = 254)
+    private String email;
+    @Column(nullable = false, length = 60)
+    private String password;
+    @Column(nullable = false)
+    private String firstname;
+    @Column(nullable = false)
+    private String lastname;
+    private UserRole role;
+    @OneToMany(mappedBy = "user", cascade = CascadeType.ALL)
+    @OrderBy("id ASC")
+    private Set<OrderEntity> orders = new HashSet<>();
+
+    public UserEntity() {
+    }
+
+    public UserEntity(String login, String email, String password, String firstname, String lastname) {
+        this.login = login;
+        this.email = email;
+        this.password = password;
+        this.firstname = firstname;
+        this.lastname = lastname;
+        this.role = UserRole.USER;
+    }
+
+    public String getLogin() {
+        return login;
+    }
+
+    public void setLogin(String name) {
+        this.login = name;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+
+    public UserRole getRole() {
+        return role;
+    }
+
+    public void setRole(UserRole role) {
+        this.role = role;
+    }
+
+    public String getFirstname() {
+        return firstname;
+    }
+
+    public void setFirstname(String firstname) {
+        this.firstname = firstname;
+    }
+
+    public String getLastname() {
+        return lastname;
+    }
+
+    public void setLastname(String lastname) {
+        this.lastname = lastname;
+    }
+
+    public Set<OrderEntity> getOrders() {
+        return orders;
+    }
+
+    public void addOrder(OrderEntity order) {
+        if (order.getUser() != this) {
+            order.setUser(this);
+        }
+        orders.add(order);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id, login, email, password, lastname, firstname, role);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj)
+            return true;
+        if (obj == null || getClass() != obj.getClass())
+            return false;
+        UserEntity other = (UserEntity) obj;
+        return Objects.equals(other.getId(), id)
+                && Objects.equals(other.getLogin(), login)
+                && Objects.equals(other.getEmail(), email)
+                && Objects.equals(other.getPassword(), password)
+                && Objects.equals(other.getFirstname(), firstname)
+                && Objects.equals(other.getLastname(), lastname)
+                && Objects.equals(other.getRole(), role);
+    }
+}

src/main/java/com/example/backend/users/model/UserRole.java

@@ -0,0 +1,16 @@
+package com.example.backend.users.model;
+
+import org.springframework.security.core.GrantedAuthority;
+
+public enum UserRole implements GrantedAuthority {
+    SUPERADMIN,
+    ADMIN,
+    USER;
+
+    private static final String PREFIX = "ROLE_";
+
+    @Override
+    public String getAuthority() {
+        return PREFIX + this.name();
+    }
+}

src/main/java/com/example/backend/users/repository/UserRepository.java

@@ -0,0 +1,13 @@
+package com.example.backend.users.repository;
+
+import java.util.Optional;
+
+import org.springframework.data.repository.CrudRepository;
+import org.springframework.data.repository.PagingAndSortingRepository;
+
+import com.example.backend.users.model.UserEntity;
+
+public interface UserRepository
+        extends CrudRepository<UserEntity, Long>, PagingAndSortingRepository<UserEntity, Long> {
+    Optional<UserEntity> findByLoginIgnoreCase(String login);
+}

src/main/java/com/example/backend/users/service/UserService.java

@@ -0,0 +1,110 @@
+package com.example.backend.users.service;
+
+import java.util.List;
+import java.util.stream.StreamSupport;
+import java.util.Optional;
+
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.data.domain.Sort;
+import org.springframework.security.core.userdetails.UserDetails;
+import org.springframework.security.core.userdetails.UserDetailsService;
+import org.springframework.security.core.userdetails.UsernameNotFoundException;
+import org.springframework.security.crypto.password.PasswordEncoder;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+import org.springframework.util.StringUtils;
+
+import com.example.backend.core.configuration.Constants;
+import com.example.backend.core.security.UserPrincipal;
+import com.example.backend.users.model.UserEntity;
+import com.example.backend.users.model.UserRole;
+import com.example.backend.users.repository.UserRepository;
+import com.example.backend.core.error.NotFoundException;
+
+@Service
+public class UserService implements UserDetailsService {
+    private final UserRepository repository;
+    private final PasswordEncoder passwordEncoder;
+
+    public UserService(UserRepository repository, PasswordEncoder passwordEncoder) {
+        this.repository = repository;
+        this.passwordEncoder = passwordEncoder;
+    }
+
+    private void checkLogin(Long id, String login) {
+        final Optional<UserEntity> existsUser = repository.findByLoginIgnoreCase(login);
+        if (existsUser.isPresent() && !existsUser.get().getId().equals(id)) {
+            throw new IllegalArgumentException(
+                    String.format("User with login %s is already exists", login));
+        }
+    }
+
+    @Transactional(readOnly = true)
+    public List<UserEntity> getAll() {
+        return StreamSupport.stream(repository.findAll().spliterator(), false).toList();
+    }
+
+    @Transactional(readOnly = true)
+    public Page<UserEntity> getAll(int page, int size) {
+        return repository.findAll(PageRequest.of(page, size, Sort.by("id")));
+    }
+
+    @Transactional(readOnly = true)
+    public UserEntity get(long id) {
+        return repository.findById(id)
+                .orElseThrow(() -> new NotFoundException(UserEntity.class, id));
+    }
+
+    @Transactional(readOnly = true)
+    public UserEntity getByLogin(String login) {
+        return repository.findByLoginIgnoreCase(login)
+                .orElseThrow(() -> new IllegalArgumentException("Invalid login"));
+    }
+
+    @Transactional
+    public UserEntity create(UserEntity entity) {
+        if (entity == null) {
+            throw new IllegalArgumentException("Entity is null");
+        }
+        checkLogin(null, entity.getLogin());
+        final String password = Optional.ofNullable(entity.getPassword()).orElse("");
+        entity.setPassword(
+                passwordEncoder.encode(
+                        StringUtils.hasText(password.strip()) ? password : Constants.DEFAULT_PASSWORD));
+        entity.setRole(Optional.ofNullable(entity.getRole()).orElse(UserRole.USER));
+        return repository.save(entity);
+    }
+
+    @Transactional
+    public UserEntity update(long id, UserEntity entity) {
+        final UserEntity existsEntity = get(id);
+        if (!entity.getLogin().equals(existsEntity.getLogin())) {
+            checkLogin(id, entity.getLogin());
+            existsEntity.setLogin(entity.getLogin());
+        }
+        final String password = Optional.ofNullable(entity.getPassword()).orElse("");
+        existsEntity.setPassword(
+                passwordEncoder.encode(
+                        StringUtils.hasText(password.strip()) ? password : Constants.DEFAULT_PASSWORD));
+        existsEntity.setFirstname(entity.getFirstname());
+        existsEntity.setLastname(entity.getLastname());
+        existsEntity.setEmail(entity.getEmail());
+        repository.save(existsEntity);
+        return existsEntity;
+    }
+
+    @Transactional
+    public UserEntity delete(long id) {
+        final UserEntity existsEntity = get(id);
+        repository.delete(existsEntity);
+        return existsEntity;
+    }
+
+    @Override
+    @Transactional(readOnly = true)
+    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
+        final UserEntity existsUser = getByLogin(username);
+        return new UserPrincipal(existsUser);
+    }
+}

src/main/resources/application.properties

@@ -0,0 +1,24 @@
+# Server
+spring.main.banner-mode=off
+server.port=8080
+
+# Logger settings
+# Available levels are: TRACE, DEBUG, INFO, WARN, ERROR, FATAL, OFF
+logging.level.com.example.demo=DEBUG
+
+# JPA Settings
+spring.datasource.url=jdbc:h2:file:./data
+spring.datasource.username=sa
+spring.datasource.password=password
+spring.datasource.driver-class-name=org.h2.Driver
+spring.jpa.hibernate.ddl-auto=create
+spring.jpa.open-in-view=false
+# spring.jpa.show-sql=true
+# spring.jpa.properties.hibernate.format_sql=true
+
+# H2 console
+spring.h2.console.enabled=true
+
+# Multipart file upload settings
+spring.servlet.multipart.max-file-size=10MB
+spring.servlet.multipart.max-request-size=10MB

src/main/resources/public/css/style.css

@@ -0,0 +1,987 @@
+@import url('https://fonts.googleapis.com/css2?family=Montserrat:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,800;0,900;1,700&display=swap');
+
+body {
+    font-family: Montserrat, Arial, sans-serif;
+    background-color: rgb(238, 236, 236);
+}
+
+p {
+    margin: 0;
+}
+
+main {
+    margin: 4%;
+}
+
+td form {
+    margin: 0;
+    padding: 0;
+    margin-top: -.25em;
+}
+
+.row {
+    margin: 0;
+}
+
+header nav {
+    background-color: rgb(23, 154, 183);
+    color: white;
+}
+
+#logo,
+.nav-link,
+.profile-link,
+#catalog-categories-list li a,
+#catalog-page-navigation a,
+#catalog-categories-mobile-list li a,
+#password-help a,
+#login-admin a,
+.list-group-item a {
+    color: inherit;
+    text-decoration: none;
+}
+
+#logo {
+    font-size: 20px;
+    font-weight: 800;
+}
+
+.nav-link,
+.header-part {
+    font-size: 16px;
+    font-weight: 600;
+}
+
+header nav a.active {
+    font-weight: 900 !important;
+    text-decoration: underline !important;
+    text-decoration-skip-ink: none !important;
+    color: white !important;
+}
+
+#cart-icon {
+    transition: border-color 0.15s;
+}
+
+.active-icon #cart-icon {
+    border-width: 1px;
+    border-style: solid;
+    border-color: white;
+}
+
+#search-bar {
+    min-width: 94px;
+}
+
+#search-bar::placeholder {
+    font-size: 14px;
+    font-weight: 400;
+    color: rgb(145, 141, 141);
+}
+
+header nav a {
+    transition: color 0.15s !important;
+}
+
+header nav a:hover {
+    color: rgb(6, 69, 173) !important;
+}
+
+#cart-icon:hover {
+    border-width: 1px;
+    border-style: solid;
+    border-color: white;
+}
+
+.active-icon #cart-icon:hover {
+    border-color: rgb(6, 69, 173);
+}
+
+.main-page-section-title {
+    min-height: 32px;
+}
+
+.main-page-section-title-text {
+    font-size: 20px;
+    font-weight: 700;
+}
+
+.main-page-price {
+    font-size: 14px;
+    font-weight: 700;
+}
+
+.main-page-book-title {
+    font-size: 11px;
+    font-weight: 500;
+}
+
+.main-page-author {
+    font-size: 11px;
+    font-weight: 500;
+    color: rgb(97, 95, 95);
+}
+
+#product-card-order-container {
+    width: 294px;
+}
+
+#product-card-book-name {
+    font-size: 26px;
+    font-weight: 600;
+}
+
+#product-card-author {
+    font-size: 16px;
+    font-weight: 600;
+    color: rgb(14, 173, 208)
+}
+
+#product-card-characteristics {
+    font-size: 16px;
+}
+
+#product-card-characteristics dt {
+    color: rgb(97, 95, 95);
+    font-weight: 600 !important;
+    padding-left: 0;
+}
+
+#product-card-characteristics dd {
+    padding-left: 0;
+    font-weight: 700;
+}
+
+#product-card-text-available {
+    font-size: 21px;
+    font-weight: 600;
+    color: rgb(80, 176, 84);
+}
+
+#product-card-price {
+    font-size: 28px;
+    font-weight: 600;
+}
+
+#product-card-button-add {
+    font-size: 21px;
+    font-weight: 600;
+    color: white;
+    background-color: rgb(23, 154, 183);
+    transition: opacity 0.25s;
+}
+
+#product-card-button-add:hover {
+    opacity: 0.85;
+}
+
+.product-card-book-description-h {
+    font-size: 18px;
+    font-weight: 700;
+}
+
+.product-card-book-description-text {
+    font-size: 18px;
+    font-weight: 500;
+}
+
+#contacts-title {
+    font-size: 30px;
+    font-weight: 900;
+}
+
+.contacts-item {
+    font-weight: 900;
+}
+
+.contacts-item-main-info {
+    font-size: 20px;
+}
+
+.contacts-item-clarification {
+    font-size: 16px;
+    color: rgb(145, 141, 141);
+}
+
+#skype-link {
+    font-size: 20px;
+    font-weight: 900;
+    color: rgb(6, 69, 173);
+}
+
+#contacts-address {
+    font-size: 20px;
+    font-weight: 900;
+}
+
+#contacts-address-value {
+    font-size: 16px;
+    font-weight: 600;
+}
+
+#cart-title {
+    font-size: 36px;
+    font-weight: 900;
+}
+
+#cart-items-num-text {
+    font-size: 24px;
+    font-weight: 900;
+}
+
+.cart-button-remove {
+    font-size: 18px;
+    font-weight: 700;
+    color: rgb(145, 141, 141);
+    transition: color 0.15s;
+}
+
+.cart-button-remove:hover {
+    color: blue;
+}
+
+.cart-book-description {
+    font-weight: 500;
+}
+
+.cart-book-description-title {
+    font-size: 20px;
+}
+
+.cart-book-description-author {
+    font-size: 16px;
+    color: rgb(145, 141, 141);
+}
+
+.button-minus,
+.button-plus {
+    font-size: 20px;
+    font-weight: 600;
+    width: 32px;
+    height: 34px;
+    color: rgb(145, 141, 141);
+    transition: background-color 0.15s, color 0.15s;
+}
+
+.button-minus:hover,
+.button-plus:hover {
+    background-color: rgb(114, 187, 5) !important;
+    color: white;
+}
+
+.cart-input-label {
+    width: 42px;
+    height: 34px;
+}
+
+.cart-input {
+    font-size: 16px;
+    font-weight: 900;
+    border-color: rgb(222, 226, 230) !important;
+}
+
+.cart-input::placeholder {
+    color: black;
+}
+
+.cart-price {
+    font-size: 18px;
+    font-weight: 700;
+}
+
+.cart-price-count {
+    font-size: 15px;
+    font-weight: 600;
+}
+
+#cart-final-price {
+    font-weight: 700;
+}
+
+#cart-final-price-text {
+    font-size: 24px;
+}
+
+#cart-final-price-value {
+    font-size: 20px;
+}
+
+#cart-btn-checkout {
+    font-size: 18px;
+    font-weight: 700;
+    background-color: rgb(217, 217, 217);
+    transition: opacity 0.25s;
+}
+
+#cart-btn-checkout:hover {
+    opacity: 0.85;
+}
+
+#catalog-categories,
+#catalog-categories-mobile {
+    border-color: rgb(23, 154, 183) !important;
+}
+
+#catalog-categories-title,
+#catalog-categories-mobile-title {
+    font-weight: 700;
+}
+
+#catalog-categories-title {
+    font-size: 24px;
+}
+
+#catalog-categories-list,
+#catalog-categories-mobile-list {
+    font-weight: 500;
+    color: rgb(6, 69, 173) !important;
+}
+
+#catalog-categories-list {
+    font-size: 14px;
+}
+
+.active-category,
+.active-category-mobile {
+    font-weight: 700;
+}
+
+#catalog-categories-mobile-title {
+    font-size: 48px;
+}
+
+#catalog-categories-mobile-list {
+    font-size: 24px;
+}
+
+#catalog-title {
+    font-size: 40px;
+    font-weight: 900;
+}
+
+#catalog-select {
+    font-size: 14px;
+    font-weight: 500;
+    width: 264px;
+    height: 35px;
+}
+
+.catalog-price {
+    font-size: 18px;
+    font-weight: 700;
+}
+
+.catalog-book-title,
+.catalog-author {
+    font-size: 12px;
+    font-weight: 600;
+}
+
+.catalog-bth-checkout {
+    font-size: 14px;
+    font-weight: 600;
+    background-color: rgb(217, 217, 217);
+    transition: background-color 0.15s, color 0.15s;
+}
+
+.catalog-bth-checkout:hover {
+    background-color: rgb(114, 187, 5) !important;
+    color: white;
+}
+
+#catalog-page-navigation {
+    font-size: 20px;
+    font-weight: 700;
+}
+
+#catalog-selected-page {
+    color: rgb(80, 176, 84) !important;
+}
+
+#catalog-page-navigation a {
+    transition: color 0.15s;
+}
+
+#catalog-page-navigation a:hover {
+    color: rgb(0, 0, 238) !important;
+}
+
+#catalog-section-navigation {
+    font-size: 16px;
+}
+
+.login-input-email,
+.login-input-password,
+.login-input-remember,
+.reg-input-name,
+.reg-input-email,
+.reg-input-password {
+    font-size: 16px;
+    min-width: 165px;
+}
+
+#login-title,
+#reg-title {
+    font-size: 24px;
+    font-weight: 900;
+}
+
+.login-btn,
+.reg-btn {
+    font-size: 16px;
+    font-weight: 900;
+    background-color: rgb(6, 69, 173);
+    transition: opacity 0.25s;
+    min-width: 160px;
+}
+
+.login-btn:hover,
+.reg-btn:hover {
+    opacity: 0.85;
+}
+
+#password-help,
+#login-admin {
+    font-size: 16px;
+    font-weight: 900;
+    color: rgb(145, 141, 141);
+}
+
+#add-btn {
+    min-width: 150px;
+}
+
+footer {
+    background-color: rgb(23, 154, 183);
+    color: white;
+    min-height: 60px;
+}
+
+#footer-container {
+    min-height: 60px;
+}
+
+#footer-row {
+    min-height: 60px;
+}
+
+#footer-copyright {
+    font-size: 24px;
+    font-weight: 900;
+}
+
+#footer-phone-number-text {
+    font-size: 20px;
+    font-weight: 900;
+}
+
+#footer-social-media-text {
+    font-size: 19px;
+    font-weight: 900;
+}
+
+.astext {
+    background: none;
+    border: none;
+    margin: 0;
+    padding: 0;
+    cursor: pointer;
+    transition: color 0.15s !important;
+}
+
+.astext:hover {
+    color: rgb(6, 69, 173) !important;
+}
+
+#cart-link-count {
+    padding: 1px 4px;
+    font-weight: 700;
+    font-size: 12px;
+    box-shadow: 0 0 0 2px #fff;
+    top: 5px;
+    left: 29px;
+    background: linear-gradient(0deg, #177bc2 0%, #2e8db5 100%);
+    border-radius: 50px;
+    align-items: center;
+    color: #fff;
+    display: inline-flex;
+    height: 13px;
+    justify-content: center;
+    line-height: 13px;
+    min-width: 16px;
+    text-align: center;
+}
+
+.invalid-feedback {
+    display: block;
+}
+
+.button-fixed-width {
+    width: 150px;
+}
+
+.cart-labels {
+    font-variant: small-caps;
+}
+
+@media (min-width: 992px) and (max-width: 1200px) {
+    #logo {
+        margin-right: 25px !important;
+    }
+
+    .header-link {
+        margin-right: 10px !important;
+    }
+
+    #header-contacts,
+    #header-search {
+        margin-right: 20px !important;
+    }
+}
+
+@media (min-width: 992px) {
+    header nav {
+        height: 60px !important;
+    }
+
+    main {
+        margin: 2%;
+    }
+}
+
+@media (max-width: 1200px) {
+    #catalog-categories-list {
+        font-size: 12px;
+    }
+
+   .orders-info {
+       font-size: 16px !important;
+   }
+
+    .active-category {
+        font-size: 11px;
+    }
+
+    #catalog-categories-title {
+        font-size: 18px;
+    }
+
+    #catalog-title {
+        font-size: 36px;
+    }
+}
+
+@media (max-width: 992px) {
+    #catalog-categories-title {
+        font-size: 16px;
+    }
+
+    #catalog-categories-list {
+        font-size: 11px;
+    }
+
+    .active-category {
+        font-size: 10px;
+    }
+
+    #catalog-title {
+        font-size: 30px;
+    }
+}
+
+@media (max-width: 768px) {
+    #product-card-characteristics {
+        display: inline-block;
+    }
+
+    #product-card-characteristics dt,
+    #product-card-characteristics dd {
+        text-align: left;
+        padding-right: 0;
+    }
+}
+
+@media (max-width: 576px) {
+    .cart-book-cover {
+        width: 66px;
+        height: 104px;
+    }
+
+    .cart-button-remove {
+        font-size: 0 !important;
+    }
+
+    .catalog-book-description,
+    .catalog-btn-checkout-div {
+        margin-left: 15%;
+    }
+
+    #admin-title {
+        font-size: 18px !important;
+    }
+
+    .edit-btn {
+        width: 50% !important;
+    }
+}
+
+@media (max-width: 510px) {
+
+    .login-input-email,
+    .login-input-password,
+    .login-input-remember,
+    .login-btn,
+    #password-help,
+    #login-admin,
+    .errmsg {
+        font-size: 12px;
+    }
+
+    .reg-input-name,
+    .reg-input-email,
+    .reg-input-password,
+    .reg-btn {
+        font-size: 12px;
+    }
+
+    #login-title,
+    #reg-title {
+        font-size: 20px;
+    }
+}
+
+@media (max-width: 475px) {
+    #cart-title {
+        font-size: 30px;
+    }
+
+    #cart-items-num-text,
+    #cart-final-price-text {
+        font-size: 20px;
+    }
+
+    .cart-book-description-title,
+    #cart-final-price-value {
+        font-size: 16px;
+    }
+
+    .cart-book-description-author {
+        font-size: 12px;
+    }
+
+    .cart-price,
+    #cart-btn-checkout,
+    .cart-input {
+        font-size: 14px;
+    }
+
+    .cart-price-count {
+        font-size: 12px;
+    }
+
+    .button-minus,
+    .button-plus {
+        font-size: 16px;
+        width: 26px;
+        height: 28px;
+    }
+
+    .cart-input-label {
+        width: 34px;
+        height: 28px;
+    }
+
+    #catalog-categories-mobile-title {
+        font-size: 44px;
+    }
+
+    #catalog-categories-mobile-list {
+        font-size: 18px;
+    }
+
+    #image-preview {
+        width: 300px;
+        height: 450px;
+    }
+}
+
+@media (max-width: 400px) {
+
+    .main-page-book-title,
+    .main-page-author {
+        font-size: 0 !important;
+    }
+
+    .main-page-book-cover {
+        width: 80px;
+        height: 122px;
+    }
+
+    #footer-copyright {
+        font-size: 20px !important;
+    }
+
+    #footer-phone-number-text {
+        font-size: 18px !important;
+    }
+
+    #footer-social-media-text {
+        font-size: 0 !important;
+        margin-right: 0 !important;
+    }
+
+    #catalog-section-navigation {
+        font-size: 12px;
+    }
+
+    .login-btn,
+    #password-help,
+    #login-admin,
+    .reg-input-password,
+    .reg-btn {
+        font-size: 16px;
+    }
+
+    .reg-input-name,
+    .reg-input-email,
+    .login-input-email,
+    .login-input-password,
+    .login-input-remember,
+    .errmsg {
+        font-size: 14px;
+    }
+
+    #login-title,
+    #reg-title {
+        font-size: 20px;
+    }
+}
+
+@media (max-width: 361px) {
+    #logo {
+        font-size: 0 !important;
+    }
+
+    .contacts-icon {
+        width: 55px !important;
+        height: 55px !important;
+    }
+
+    #contacts-title {
+        font-size: 22px;
+    }
+
+    .contacts-item-main-info,
+    #skype-link,
+    #contacts-address {
+        font-size: 14px;
+    }
+
+    .contacts-item-clarification,
+    #contacts-address-value {
+        font-size: 12px;
+    }
+
+    #catalog-title {
+        font-size: 20px;
+    }
+
+    #catalog-select {
+        font-size: 11px;
+        width: 164px;
+        height: 28px;
+        padding: 5px;
+    }
+
+    #image-preview {
+        width: 200px;
+        height: 300px;
+    }
+}
+
+@media (max-width: 335px) {
+    #mobile-price-count {
+        display: none;
+    }
+
+    #cart-title {
+        font-size: 24px;
+    }
+
+    #cart-items-num-text {
+        font-size: 14px;
+    }
+
+    .cart-book-description-title,
+    #cart-final-price-value {
+        font-size: 10px;
+    }
+
+    .cart-book-description-author {
+        font-size: 8px;
+    }
+
+    #cart-final-price-text {
+        font-size: 12px;
+    }
+
+    .button-minus,
+    .button-plus {
+        font-size: 10px;
+        width: 16px;
+        height: 18px;
+    }
+
+    .cart-input-label {
+        width: 22px;
+        height: 18px;
+    }
+
+    .cart-input,
+    #cart-btn-checkout,
+    .cart-price {
+        font-size: 9px;
+    }
+
+    .cart-price-count {
+        font-size: 8px;
+    }
+
+    .trash-icon {
+        width: 16px;
+        height: 16px;
+    }
+
+    .cart-book-cover {
+        width: 44px;
+        height: 69px;
+    }
+}
+
+@media (max-width: 320px) {
+    #product-card-price {
+        font-size: 22px !important;
+    }
+
+    #novelty-icon {
+        width: 74px !important;
+        height: 25px !important;
+    }
+
+    #discont-icon {
+        width: 49px !important;
+        height: 25px !important;
+    }
+
+    .product-card-book-description-h,
+    .product-card-book-description-text,
+    #product-card-button-add,
+    #product-card-text-available {
+        font-size: 16px !important;
+    }
+
+    #catalog-section-navigation {
+        font-size: 11px;
+    }
+
+    #catalog-categories-mobile-title {
+        font-size: 38px;
+    }
+
+    #catalog-categories-mobile-list {
+        font-size: 16px;
+    }
+}
+
+@media (max-width: 282px) {
+    #footer-copyright {
+        font-size: 14px !important;
+    }
+
+    #footer-phone-number-text {
+        font-size: 12px !important;
+    }
+
+    #admin-title {
+        font-size: 16px !important;
+    }
+}
+
+@media (max-width: 272px) {
+    #fire-icon {
+        height: 38px;
+        width: 30px;
+    }
+
+    .catalog-book-description,
+    .catalog-btn-checkout-div {
+        margin-left: 0;
+    }
+
+    .contacts-icon {
+        width: 44px !important;
+        height: 44px !important;
+        margin-right: 20px !important;
+    }
+
+    #contacts-title {
+        font-size: 16px;
+    }
+
+    .contacts-item-main-info,
+    #skype-link #contacts-address {
+        font-size: 11px;
+    }
+
+    #catalog-title {
+        font-size: 16px;
+    }
+
+    #catalog-select {
+        width: 140px;
+        height: 22px;
+        padding: 5px;
+    }
+
+    #catalog-select,
+    #contacts-address-value,
+    .contacts-item-clarification {
+        font-size: 9px;
+    }
+
+    #catalog-page-navigation {
+        font-size: 15px;
+        font-weight: 700;
+    }
+
+    #catalog-section-navigation {
+        font-size: 11px;
+    }
+
+    #catalog-categories-mobile-title {
+        font-size: 26px;
+    }
+
+    #catalog-categories-mobile-list {
+        font-size: 13px;
+    }
+
+    #image-preview {
+        width: 155px;
+        height: 235px;
+    }
+
+    .edit-btn {
+        width: 75% !important;
+    }
+}
+
+@media (max-width: 204px) {
+    #footer-copyright {
+        font-size: 13px !important;
+    }
+
+    #footer-phone-number-text {
+        font-size: 11px !important;
+    }
+}

src/main/resources/templates/admin.html

@@ -0,0 +1,34 @@
+<!DOCTYPE html>
+<html lang="ru" xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout" layout:decorate="~{default}">
+
+<head>
+    <title>Панель администратора</title>
+</head>
+
+<body th:with="bodyClass='bg-white', mainClass='my-0'">
+    <main layout:fragment="content">
+        <div class="text-center mt-4">
+            <h2 class="fs-2 mb-3 fw-bold">Панель администратора</h2>
+        </div>
+        
+        <ol class="list-group list-group-numbered mt-3">
+            <li class="list-group-item fs-4 fw-bold">
+                <a href="/admin/category">Категории.</a>
+            </li>
+            <li class="list-group-item fs-4 fw-bold">
+                <a href="/admin/book">Книги.</a>
+            </li>
+            <li class="list-group-item fs-4 fw-bold">
+                <a href="/admin/order">Заказы.</a>
+            </li>
+            <li class="list-group-item fs-4 fw-bold">
+                <a href="/admin/user">Пользователи.</a>
+            </li>
+            <li class="list-group-item fs-4 fw-bold">
+                <a href="/h2-console/" target="_blank">Консоль H2.</a>
+            </li>
+        </ol>
+    </main>
+</body>
+
+</html>

src/main/resources/templates/book-edit.html

@@ -0,0 +1,119 @@
+<!DOCTYPE html>
+<html lang="ru" xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout" layout:decorate="~{default}">
+
+<head>
+    <title>Панель администратора (книги)</title>
+</head>
+
+<body th:with="bodyClass='bg-white', mainClass='my-0'">
+    <main layout:fragment="content">
+        <div class="row justify-content-center">
+            <form class="col-lg-8 col-xl-7 col-xxl-6" action="#" th:action="@{/admin/book/edit/{id}(id=${book.id}, page=${page})}" 
+                th:object="${book}" method="post" enctype="multipart/form-data">
+                <div class='text-center mb-4 mt-5'>
+                    <img id='image-preview' alt='placeholder' width="400" height="600"
+                        th:src="@{${book.image != null && !#strings.isEmpty(book.image) ? book.image : '/placeholder_400_600.png'}}" />
+                </div>
+                <div class="mb-4">
+                    <label for="categoryId" class="form-label">Категория</label>
+                    <select th:name="categoryId" id="categoryId" class="form-select">
+                        <option selected value="">Выберите категорию книги</option>
+                        <option th:each="category : ${categories}" th:value="${category.id}" th:selected="${category.id==book.categoryId}">
+                            [[${category.name}]]
+                        </option>
+                    </select>
+                    <div th:if="${#fields.hasErrors('categoryId')}" th:errors="*{categoryId}" class="invalid-feedback"></div>
+                </div>
+                <div class="mb-4">
+                    <label for="id" class="form-label">ID</label>
+                    <input type="text" th:value="*{id}" id="id" class="form-control" readonly disabled>
+                </div>
+                <div class="mb-4">
+                    <label class="form-label" for="title">Название книги</label>
+                    <input id="title" th:field="*{title}" class="form-control" type="text">
+                    <div th:if="${#fields.hasErrors('title')}" th:errors="*{title}" class="invalid-feedback"></div>
+                </div>
+                <div class="mb-4">
+                    <label class="form-label" for="author">Автор</label>
+                    <input id="author" th:field="*{author}" class="form-control" type="text">
+                    <div th:if="${#fields.hasErrors('author')}" th:errors="*{author}" class="invalid-feedback"></div>
+                </div>
+                <div class="mb-4">
+                    <label class="form-label" for="price">Цена</label>
+                    <input id="price" th:field="*{price}" class="form-control" type="number">
+                    <div th:if="${#fields.hasErrors('price')}" th:errors="*{price}" class="invalid-feedback"></div>
+                </div>
+                <div class="mb-4">
+                    <label class="form-label" for="description">Описание книги</label>
+                    <textarea th:field="*{description}" class="form-control" id="description" rows="3"></textarea>
+                    <div th:if="${#fields.hasErrors('description')}" th:errors="*{description}" class="invalid-feedback"></div>
+                </div>
+                <div class="mb-4">
+                    <label class="form-label" for="annotation">Аннотация</label>
+                    <textarea th:field="*{annotation}" class="form-control" id="annotation" rows="3"></textarea>
+                    <div th:if="${#fields.hasErrors('annotation')}" th:errors="*{annotation}" class="invalid-feedback"></div>
+                </div>
+                <p class="mb-3">
+                    Xарактеристики:
+                </p>
+                <div class="mb-4 border border-1 border-secondary p-2">
+                    <div class="mb-3">
+                        <label class="form-label" for="bookCode">Код книги</label>
+                        <input th:field="*{bookCode}" id="bookCode" class="form-control" type="number">
+                        <div th:if="${#fields.hasErrors('bookCode')}" th:errors="*{bookCode}" class="invalid-feedback"></div>
+                    </div>
+                    <div class="mb-3">
+                        <label class="form-label" for="publisher">Издательство</label>
+                        <input th:field="*{publisher}" id="publisher" class="form-control" type="text">
+                        <div th:if="${#fields.hasErrors('publisher')}" th:errors="*{publisher}" class="invalid-feedback"></div>
+                    </div>
+                    <div class="mb-3">
+                        <label class="form-label" for="series">Серия</label>
+                        <input th:field="*{series}" id="series" class="form-control" type="text">
+                        <div th:if="${#fields.hasErrors('series')}" th:errors="*{series}" class="invalid-feedback"></div>
+                    </div>
+                    <div class="mb-3">
+                        <label class="form-label" for="publicationYear">Год издания</label>
+                        <input th:field="*{publicationYear}" id="publicationYear" class="form-control" type="number">
+                        <div th:if="${#fields.hasErrors('publicationYear')}" th:errors="*{publicationYear}" class="invalid-feedback"></div>
+                    </div>
+                    <div class="mb-3">
+                        <label class="form-label" for="pagesNum">Количество страниц</label>
+                        <input th:field="*{pagesNum}" id="pagesNum" class="form-control" type="number">
+                        <div th:if="${#fields.hasErrors('pagesNum')}" th:errors="*{pagesNum}" class="invalid-feedback"></div>
+                    </div>
+                    <div class="mb-3">
+                        <label class="form-label" for="size">Размер</label>
+                        <input th:field="*{size}" id="size" class="form-control" type="text">
+                        <div th:if="${#fields.hasErrors('size')}" th:errors="*{size}" class="invalid-feedback"></div>
+                    </div>
+                    <div class="mb-3">
+                        <label class="form-label" for="coverType">Тип обложки</label>
+                        <input th:field="*{coverType}" id="coverType" class="form-control" type="text">
+                        <div th:if="${#fields.hasErrors('coverType')}" th:errors="*{coverType}" class="invalid-feedback"></div>
+                    </div>
+                    <div class="mb-3">
+                        <label class="form-label" for="circulation">Тираж</label>
+                        <input th:field="*{circulation}" id="circulation" class="form-control" type="number">
+                        <div th:if="${#fields.hasErrors('circulation')}" th:errors="*{circulation}" class="invalid-feedback"></div>
+                    </div>
+                    <div>
+                        <label class="form-label" for="weight">Вес, г</label>
+                        <input th:field="*{weight}" id="weight" class="form-control" type="number">
+                        <div th:if="${#fields.hasErrors('weight')}" th:errors="*{weight}" class="invalid-feedback"></div>
+                    </div>
+                </div>
+                <div class="mb-4">
+                    <label class="form-label" for="cover">Обложка книги</label>
+                    <input type="file" class="form-control" name="cover" id="cover">
+                </div>
+                <div class="d-flex flex-column align-items-center mb-5">
+                    <button class="btn btn-primary w-50 rounded-5 edit-btn" type="submit" id="add-btn">Сохранить книгу</button>
+                    <a class="btn btn-secondary w-25 mt-4 edit-btn" th:href="@{/admin/book(page=${page}, categoryId=${categoryId})}">Отмена</a>
+                </div>
+            </form>
+        </div>
+    </main>
+</body>
+
+</html>

src/main/resources/templates/book.html

@@ -0,0 +1,91 @@
+<!DOCTYPE html>
+<html lang="ru" xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout" layout:decorate="~{default}">
+
+<head>
+    <title>Панель администратора (книги)</title>
+</head>
+
+<body th:with="bodyClass='bg-white', mainClass='my-0'">
+    <main layout:fragment="content">
+        <th:block th:switch="${items.size()}">
+            <h2 class="mt-4 text-center" th:case="0">Данные отсутствуют</h2>
+            <th:block th:case="*">
+                <div class="row gy-3">
+                    <div class="col-12 mt-4 px-0">
+                        <div class="block d-flex justify-content-center fs-2 fw-bold mb-3 mb-sm-4" id="admin-title">
+                            Книги
+                        </div>
+                    </div>
+                    <form th:action="@{/admin/book}" method="get" class="row mb-4">
+                        <div class="col-sm-10">
+                            <input type="hidden" th:name="page" th:value="${page}">
+                            <select th:name="filter" id="filter" class="form-select">
+                                <option selected value="">Фильтр по категории</option>
+                                <option th:each="category : ${categories}" th:value="${category.id}" th:selected="${category.id==filter}">
+                                    [[${category.name}]]
+                                </option>
+                            </select>
+                        </div>
+                        <button type="submit" class="btn btn-primary col-sm-2">Показать</button>
+                    </form>
+                    <div class="col-12 px-0">
+                        <div class="block table-responsive">
+                            <table class="table table-hover table-bordered align-middle">
+                                <caption></caption>
+                                <thead>
+                                    <tr>
+                                        <th scope="col">ID</th>
+                                        <th scope="col">Название книги</th>
+                                        <th scope="col">Автор</th>
+                                        <th scope="col">Цена</th>
+                                        <th scope="col">Категория каталога</th>
+                                        <th scope="col">Дата</th>
+                                        <th scope="col"></th>
+                                        <th scope="col"></th>
+                                    </tr>
+                                </thead>
+                                <tbody class="table-group-divider">
+                                    <tr th:each="book : ${items}">
+                                        <th scope="row" th:text="${book.id}"></th>
+                                        <td th:text="${book.title}"></td>
+                                        <td th:text="${book.author}"></td>
+                                        <td th:text="${#numbers.formatDecimal(book.price, 1, 2)}"></td>
+                                        <td th:text="${book.categoryName}"></td>
+                                        <td th:text="${book.date}"></td>
+                                        <td>
+                                            <form th:action="@{/admin/book/edit/{id}(id=${book.id})}" method="get">
+                                                <input type="hidden" th:name="page" th:value="${page}">
+                                                <input type="hidden" th:name="filter" th:value="${filter}">
+                                                <button type="submit" class="btn btn-primary w-100">Редактировать</button>
+                                            </form>
+                                        </td>
+                                        <td>
+                                            <form th:action="@{/admin/book/delete/{id}(id=${book.id})}" method="post">
+                                                <input type="hidden" th:name="page" th:value="${page}">
+                                                <input type="hidden" th:name="filter" th:value="${filter}">
+                                                <button type="submit" class="btn btn-primary w-100"
+                                                    onclick="return confirm('Вы уверены?')">Удалить</button>
+                                            </form>
+                                        </td>
+                                    </tr>
+                                </tbody>
+                            </table>
+                        </div>
+                    </div>
+                    <div class="col-12 px-0">
+                        <div class="block mb-4">
+                            <a class="btn btn-primary" th:href="@{/admin/book/edit/(page=${page}, filter=${filter})}">Добавить книгу</a>
+                        </div>
+                    </div>
+                    <th:block th:replace="~{ pagination :: pagination (
+                                                                url=${'admin/book'},
+                                                                totalPages=${totalPages},
+                                                                currentPage=${currentPage},
+                                                                filter=${filter},
+                                                                searchInfo='') }" />
+                </div>  
+        </th:block>
+    </main>
+</body>
+
+</html>

src/main/resources/templates/cart.html

@@ -0,0 +1,162 @@
+<!DOCTYPE html>
+<html lang="ru" xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout" layout:decorate="~{default}">
+
+<head>
+    <title>Корзина</title>
+</head>
+
+<body th:with="bodyClass='bg-white', mainClass=''">
+    <main layout:fragment="content">
+        <div class="row gy-3 mb-1">
+            <div class="col-12 mb-3 mb-sm-4 mt-0 px-0">
+                <div class="block d-flex justify-content-center lh-1" id="cart-title">
+                    Моя корзина
+                </div>
+            </div>
+            <h2 th:if="${#lists.isEmpty(cart)}" class="col-12 mb-3">Товары отсутствуют.</h2>
+
+            <th:block th:if="${not #lists.isEmpty(cart)}">
+                <div class="col-8 px-0">
+                    <div class="block d-flex align-items-end lh-1" id="cart-items-num-text">
+                        В корзине&nbsp;[[${count}]]&nbsp;[[${linesText}]]:
+                    </div>
+                </div>
+                <div class="col-4 d-flex justify-content-end px-0">
+                    <div class="block align-self-end">
+                        <form action="#" th:action="@{/cart/clear}" method="post">
+                            <button type="submit"
+                                class="cart-button-remove d-flex justify-content-end align-items-end lh-1 border-0 bg-white pe-0"
+                                onclick="return confirm('Вы уверены?')">
+                                <img th:src="@{/trash.png}" class="trash-icon me-sm-2" alt="trash" width="24" height="24" />
+                                Удалить все
+                            </button>
+                        </form>
+                    </div>
+                </div>
+
+                <th:block th:each="cartItem : ${cart}">
+                    <div class="col-1 border-top border-black pt-3 d-none d-sm-block">
+                        <div class="block">
+                            <img th:src="@{${cartItem.book.image != null && !#strings.isEmpty(cartItem.book.image) ? cartItem.book.image : '/placeholder_400_600.png'}}" 
+                                class="cart-book-cover me-3" alt="cart-book-cover-1" width="88" height="138" />
+                        </div>
+                    </div>
+                    <div class="col-6 pt-3 border-top border-black d-none d-sm-block">
+                        <div class="cart-book-description block d-flex flex-column justify-content-start ms-5 ms-lg-4 ms-xl-0 ps-0 ps-sm-2 ps-md-0 ps-xl-3 ps-xxl-0">
+                            <p class="cart-book-description-title mb-2">[[${cartItem.book.title}]]</p>
+                            <p class="cart-book-description-author">[[${cartItem.book.author}]]</p>
+                        </div>
+                    </div>
+                    <div class="col-3 pt-2 border-top border-black d-none d-sm-block">
+                        <div class="block d-flex align-items-start justify-content-end">
+                            <form action="#" th:action="@{/cart/decrease?bookId={bookId}(bookId=${cartItem.book.id})}" method="post">
+                                <button type="submit" class="button-minus border border-end-0 rounded-start bg-white">
+                                    –
+                                </button>
+                            </form>
+                            <label class="cart-input-label">
+                                <input readonly type="tel" class="cart-input h-100 w-100 border text-center p-0" placeholder="1" th:value="${cartItem.count}" />
+                            </label>
+                            <form action="#" th:action="@{/cart/increase?bookId={bookId}(bookId=${cartItem.book.id})}" method="post">
+                                <button type="submit" class="button-plus border border-start-0 rounded-end bg-white">
+                                    +
+                                </button>
+                            </form>
+                        </div>
+                    </div>
+                    <div class="col-2 pt-3 border-top border-black d-none d-sm-block">
+                        <div class="block d-flex flex-column align-items-end h-100">
+                            <p class="cart-price">[[${#numbers.formatDecimal(cartItem.book.price, 0, 'COMMA', 0, 'POINT')}]]&nbsp;р.</p>
+                            <p class="cart-price-count text-secondary mt-3">
+                                [[${#numbers.formatDecimal(cartItem.book.price, 0, 'COMMA', 0, 'POINT')}]]
+                                <span> * </span>
+                                [[${cartItem.count}]]
+                                <span> = </span>
+                                [[${#numbers.formatDecimal(cartItem.book.price * cartItem.count, 0, 'COMMA', 0, 'POINT')}]]&nbsp;р.
+                            </p>
+                            <div class="flex-grow-1"></div>
+                            <form action="#" th:action="@{/cart/clear?bookId={bookId}(bookId=${cartItem.book.id})}" method="post">
+                                <button type="submit" class="cart-button-remove d-flex align-items-end lh-1 border-0 bg-white pe-0"
+                                    onclick="return confirm('Вы уверены?')">
+                                    <img th:src="@{/trash.png}" class="trash-icon me-2" alt="trash" width="24" height="24" />
+                                    Удалить
+                                </button>
+                            </form>     
+                        </div>
+                    </div>
+
+                    <div class="col-2 border-top border-black pt-3 d-sm-none">
+                        <div class="block">
+                            <img th:src="@{${cartItem.book.image != null && !#strings.isEmpty(cartItem.book.image) ? cartItem.book.image : '/placeholder_400_600.png'}}" 
+                                class="cart-book-cover me-3" alt="cart-book-cover" width="88" height="138" />
+                        </div>
+                    </div>
+                    <div class="col-10 pt-3 border-top border-black d-sm-none">
+                        <div class="block ms-4">
+                            <p class="cart-book-description-title mb-2">[[${cartItem.book.title}]]</p>
+                            <p class="cart-book-description-author mb-2">[[${cartItem.book.author}]]</p>
+                            <div class="d-flex mb-2">
+                                <p class="cart-price me-3">[[${#numbers.formatDecimal(cartItem.book.price, 0, 'COMMA', 0, 'POINT')}]]&nbsp;р.</p>
+                                <p class="cart-price-count text-secondary text-center lh-sm mt-1" id="mobile-price-count">
+                                    [[${#numbers.formatDecimal(cartItem.book.price, 0, 'COMMA', 0, 'POINT')}]]
+                                    <span> * </span>
+                                    [[${cartItem.count}]]
+                                    <span> = </span>
+                                    [[${#numbers.formatDecimal(cartItem.book.price * cartItem.count, 0, 'COMMA', 0, 'POINT')}]]&nbsp;р.
+                                </p>
+                            </div>
+                            <div class="d-flex align-items-center">
+                                <form action="#" th:action="@{/cart/decrease?bookId={bookId}(bookId=${cartItem.book.id})}" method="post">
+                                    <button type="submit" class="button-minus border border-end-0 rounded-start bg-white">
+                                        –
+                                    </button>
+                                </form>
+                                <label class="cart-input-label">
+                                    <input readonly type="tel" class="cart-input h-100 w-100 border text-center" placeholder="1"
+                                        th:value="${cartItem.count}" />
+                                </label>
+                                <form action="#" th:action="@{/cart/increase?bookId={bookId}(bookId=${cartItem.book.id})}" method="post">
+                                    <button type="submit" class="button-plus border border-start-0 rounded-end bg-white">
+                                        +
+                                    </button>
+                                </form>
+                                <div class="flex-grow-1"></div>
+                                <form action="#" th:action="@{/cart/clear?bookId={bookId}(bookId=${cartItem.book.id})}" method="post">
+                                    <button type="submit" class="cart-button-remove d-flex align-items-end lh-1 border-0 bg-white pe-0"
+                                        onclick="return confirm('Вы уверены?')">
+                                        <img th:src="@{/trash.png}" class="trash-icon me-2" alt="trash" width="24" height="24" />
+                                        Удалить
+                                    </button>
+                                </form>
+                            </div>
+                        </div>
+                    </div>
+                </th:block>
+
+                <div class="col-12 pt-3 border-top border-black px-0">
+                    <div class="block d-flex justify-content-end align-items-end lh-1" id="cart-final-price">
+                        <span class="me-4" id="cart-final-price-text">
+                            Итого:
+                        </span>
+                        <span id="cart-final-price-value"> [[${#numbers.formatDecimal(sum, 1, 2)}]] р. </span>
+                    </div>
+                </div>
+            </th:block>
+
+            <div class="col-12 px-0">
+                <div class="block d-flex justify-content-end">
+                    <button th:if="${#lists.isEmpty(cart)}" class="btn rounded-5" id="cart-btn-checkout" disabled>
+                        Оформить заказ
+                    </button>
+                    <form th:if="${not #lists.isEmpty(cart)}" action="#" th:action="@{/cart/save}" method="post">
+                        <button type="submit" class="btn rounded-5" id="cart-btn-checkout" onclick="return confirm('Вы уверены?')">
+                            Оформить заказ
+                        </button>
+                    </form>
+                </div>
+            </div>
+        </div>
+    </main>
+</body>
+
+</html>

src/main/resources/templates/catalog-mobile.html

@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<html lang="ru" xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout" layout:decorate="~{default}">
+
+<head>
+    <title>Каталог</title>
+</head>
+
+<body th:with="bodyClass='', mainClass='justify-content-center my-0'">
+    <main layout:fragment="content">
+        <div class="row">
+            <div class="col-12 ps-0 mt-0 bg-white border border-3" id="catalog-categories-mobile">
+                <div class="block d-flex flex-column justify-content-center p-2 h-100">
+                    <p class="mb-4" id="catalog-categories-mobile-title">
+                        Категории
+                    </p>
+                    <ul class="list-unstyled ps-0 mb-4 d-flex flex-column gap-3 flex-grow-1" id="catalog-categories-mobile-list">
+                        <li>
+                            <a th:href="@{/catalog}">Все книги</a>
+                        </li>
+                        <th:block th:each="category : ${categories}">
+                            <li>
+                                <a th:href="@{/catalog/{id}(id=${category.id})}" th:text="${category.name}"></a>
+                            </li>
+                        </th:block>
+                    </ul>
+                </div>
+            </div>
+        </div>
+    </main>
+</body>
+
+</html>

src/main/resources/templates/catalog.html

@@ -0,0 +1,155 @@
+<!DOCTYPE html>
+<html lang="ru" xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout" layout:decorate="~{default}">
+
+<head>
+    <title>Каталог</title>
+</head>
+
+<body th:with="bodyClass='h-100', mainClass='justify-content-center my-0'">
+    <main layout:fragment="content">
+        <div class="row gy-3 flex-grow-1">
+            <div class="col-2 d-none d-md-block ps-0 mt-0 bg-white border border-3 border-top-0 border-bottom-0" id="catalog-categories">
+                <div class="block d-flex flex-column justify-content-center p-2 h-100">
+                    <p class="mb-4 mt-2" id="catalog-categories-title">
+                        Категории
+                    </p>
+                    <ul class="list-unstyled ps-0 mb-4 d-flex flex-column gap-3 flex-grow-1" id="catalog-categories-list">
+                        <li th:class="${'Все книги' eq activeName} ? 'active-category' : ''">
+                            <a th:href="@{/catalog}">Все книги</a>
+                        </li>
+                        <th:block th:each="category : ${categories}">
+                            <li th:class="${category.name eq activeName} ? 'active-category' : ''">
+                                <a th:href="@{/catalog/{id}(id=${category.id})}" th:text="${category.name}"></a>
+                            </li>
+                        </th:block>
+                    </ul>
+                </div>
+            </div>
+            <div class="col-12 col-md-10 d-flex flex-column bg-white mt-0 pt-2 pt-lg-3">
+                <div class="row gy-3">
+                    <div class="col-12 mb-3 mb-lg-5 px-0 d-md-none">
+                        <div class="block d-flex lh-1" id="catalog-section-navigation">
+                            <a th:href="@{/сatalog-mobile}" class="me-2 text-decoration-none">
+                            Каталог
+                            </a>
+                            <span class="text-secondary me-2"> &gt; </span>
+                            <a th:if="${'Все книги' eq activeName}" th:href="@{/catalog}" class="text-decoration-none">
+                                [[${activeName}]]
+                            </a>
+                            <a th:if="${'Все книги' != activeName}" th:href="@{/catalog/{id}(id=${activeId})}" class="text-decoration-none">
+                            [[${activeName}]]
+                            </a>
+                        </div>
+                    </div>
+                    <div class="col-12 mb-3 mb-lg-4 px-0">
+                        <div class="block d-flex justify-content-center lh-1" id="catalog-title">
+                            <div>[[${activeName}]]</div>
+                        </div>
+                    </div>
+                    <div class="col-12 mb-3 mb-lg-5 gx-0">
+                        <div class="block">
+                            <form class="row" th:if="${'Все книги' eq activeName}" th:action="@{/catalog}" method="get">
+                                <input type="hidden" th:name="page" th:value="${page}">
+                                <select th:name="filter" class="form-select border-black сol-sm-10 me-sm-2" id="catalog-select">
+                                    <option value="new" th:selected="${filter == 'new'}">Сначала новые</option>
+                                    <option value="cheap" th:selected="${filter == 'cheap'}">Сначала дешевые</option>
+                                    <option value="expensive" th:selected="${filter == 'expensive'}">Сначала дорогие</option>
+                                </select>
+                                <button type="submit" class="btn astext col-sm-2 ms-sm-2 text-start">Показать.</button>
+                            </form>
+                            <form class="row" th:if="${'Все книги' != activeName}" th:action="@{/catalog/{id}(id=${activeId})}" method="get">
+                                <input type="hidden" th:name="page" th:value="${page}">
+                                <select th:name="filter" class="form-select border-black сol-sm-10 me-sm-2" id="catalog-select">
+                                    <option value="new" th:selected="${filter == 'new'}">Сначала новые</option>
+                                    <option value="cheap" th:selected="${filter == 'cheap'}">Сначала дешевые</option>
+                                    <option value="expensive" th:selected="${filter == 'expensive'}">Сначала дорогие</option>
+                                </select>
+                                <button type="submit" class="btn astext col-sm-2 ms-sm-2 text-start">Показать.</button>
+                            </form>
+                        </div>
+                    </div>
+                    <div class="col-sm-6 col-md-4 col-lg-3 mt-4" th:each="book : ${items}">
+                        <div class="block d-flex flex-column h-100">
+                            <div class="d-flex justify-content-center mb-4">
+                                <a th:href="@{/product-card/{id}(id=${book.id})}">
+                                    <img th:src="@{${book.image != null && !#strings.isEmpty(book.image) ? book.image : '/placeholder_400_600.png'}}" 
+                                        class="catalog-book-cover" alt="book-cover-catalog" width="155" height="245" />
+                                </a>
+                            </div>
+                            <div class="catalog-book-description d-flex flex-column align-items-start">
+                                <p class="catalog-price mb-3">
+                                    [[${#numbers.formatDecimal(book.price, 0, 'COMMA', 0, 'POINT')}]]&nbsp;₽
+                                </p>
+                                <p class="catalog-book-title mb-3">
+                                    [[${book.title != null ? book.title : ''}]]
+                                </p>
+                                <p class="catalog-author mb-3">
+                                    [[${book.author != null ? book.author : ''}]]
+                                </p>
+                            </div>
+                            <div class="flex-grow-1"></div>
+                            <div class="catalog-btn-checkout-div d-flex justify-content-start" sec:authorize="isAnonymous()">
+                                <button class="catalog-bth-checkout btn rounded-5 px-3" 
+                                    onclick="return alert('Пожалуйста, войдите в свой аккаунт или зарегистрируйте новый!')">
+                                    В корзину
+                                </button>
+                            </div>
+                            <div class="catalog-btn-checkout-div d-flex justify-content-start" sec:authorize="isAuthenticated()">
+                                <button type="button" class="catalog-bth-checkout btn rounded-5 px-3 btn-info"
+                                    th:if="${cart.containsKey(book.id)}" disabled>
+                                    Уже в корзине
+                                </button>
+                                <th:block th:if="${'Все книги' eq activeName}">
+                                    <form th:if="${not cart.containsKey(book.id)}" th:action="@{/catalog}" method="post">
+                                        <input type="hidden" th:name="bookId" th:value="${book.id}">
+                                        <input type="hidden" th:name="page" th:value="${page}">
+                                        <input type="hidden" th:name="filter" th:value="${filter}">
+                                        <button type="submit" class="catalog-bth-checkout btn rounded-5 px-3">
+                                            В корзину
+                                        </button>
+                                    </form>
+                                </th:block>
+                                <th:block th:if="${'Все книги' != activeName}">
+                                    <form th:if="${not cart.containsKey(book.id)}" th:action="@{/catalog/{id}(id=${activeId})}" method="post">
+                                        <input type="hidden" th:name="bookId" th:value="${book.id}">
+                                        <input type="hidden" th:name="page" th:value="${page}">
+                                        <input type="hidden" th:name="filter" th:value="${filter}">
+                                        <button type="submit" class="catalog-bth-checkout btn rounded-5 px-3">
+                                            В корзину
+                                        </button>
+                                    </form>
+                                </th:block>
+                            </div>
+                        </div>
+                    </div>
+                </div>
+                <th:block sec:authorize="hasAnyRole('ADMIN', 'SUPERADMIN')">
+                    <a th:href="@{/admin}" class="text-dark fw-bolder mt-5 mb-3 text-decoration-none">
+                        Панель администратора.
+                    </a>
+                </th:block>
+                <div class="d-flex flex-grow-1"></div>
+
+                <div th:if="${'Все книги' eq activeName}">
+                    <th:block th:replace="~{ pagination :: pagination (
+                                            url=${'catalog'},
+                                            totalPages=${totalPages},
+                                            currentPage=${currentPage},
+                                            filter=${filter},
+                                            searchInfo='') }" />
+                </div>
+                
+                <div th:if="${'Все книги' != activeName}">
+                    <th:block th:replace="~{ pagination :: pagination (
+                                            url=@{catalog/{id}(id=${activeId})},
+                                            totalPages=${totalPages},
+                                            currentPage=${currentPage},
+                                            filter=${filter},
+                                            searchInfo='') }" />
+                </div>               
+            </div>
+        </div>
+    </main>
+</body>
+
+</html>

src/main/resources/templates/category-edit.html

@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<html lang="ru" xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout" layout:decorate="~{default}">
+
+<head>
+    <title>Панель администратора (категории)</title>
+</head>
+
+<body th:with="bodyClass='bg-white', mainClass='my-0'">
+    <main layout:fragment="content">
+        <div class="row justify-content-center">
+            <form class="col-lg-8 col-xl-7 col-xxl-6" action="#"
+                th:action="@{/admin/category/edit/{id}(id=${category.id})}" th:object="${category}" method="post" >
+                <div class="mb-4 mt-4">
+                    <label for="id" class="form-label">ID</label>
+                    <input type="text" th:value="*{id}" id="id" class="form-control" readonly disabled>
+                </div>
+                <div class="mb-4">
+                    <label class="form-label" for="name">Название категории</label>
+                    <input id="name" th:field="*{name}" class="form-control" type="text">
+                    <div th:if="${#fields.hasErrors('name')}" th:errors="*{name}" class="invalid-feedback"></div>
+                </div>
+                <div class="d-flex flex-column align-items-center mb-5">
+                    <button class="btn btn-primary w-50 rounded-5 edit-btn" type="submit" id="add-btn">Сохранить категорию</button>
+                    <a class="btn btn-secondary w-25 mt-4 edit-btn"
+                        href="/admin/category">Отмена</a>
+                </div>
+            </form>
+        </div>
+    </main>
+</body>
+
+</html>

src/main/resources/templates/category.html

@@ -0,0 +1,62 @@
+<!DOCTYPE html>
+<html lang="ru" xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout" layout:decorate="~{default}">
+
+<head>
+    <title>Панель администратора (категории)</title>
+</head>
+
+<body th:with="bodyClass='bg-white', mainClass='my-0'">
+    <main layout:fragment="content">
+        <th:block th:switch="${categories.size()}">
+            <h2 class="mt-4 text-center" th:case="0">Данные отсутствуют</h2>
+            <th:block th:case="*">
+                <div class="row gy-3">
+                    <div class="col-12 mt-4 px-0">
+                        <div class="block d-flex justify-content-center fs-2 fw-bold mb-3 mb-sm-4" id="admin-title">
+                            Категории
+                        </div>
+                    </div>
+                    <div class="col-12 px-0">
+                        <div class="block table-responsive">
+                            <table class="table table-hover table-bordered align-middle">
+                                <caption></caption>
+                                <thead>
+                                    <tr>
+                                        <th scope="col">ID</th>
+                                        <th scope="col">Название категории</th>
+                                        <th scope="col"></th>
+                                        <th scope="col"></th>
+                                    </tr>
+                                </thead>
+                                <tbody class="table-group-divider">
+                                    <tr th:each="category : ${categories}">
+                                        <th scope="row" th:text="${category.id}"></th>
+                                        <td th:text="${category.name}"></td>
+                                        <td>
+                                            <form th:action="@{/admin/category/edit/{id}(id=${category.id})}" method="get">
+                                                <button type="submit" class="btn btn-primary w-100">Редактировать</button>
+                                            </form>
+                                        </td>
+                                        <td>
+                                            <form th:action="@{/admin/category/delete/{id}(id=${category.id})}" method="post">
+                                                <button type="submit" class="btn btn-primary w-100"
+                                                    onclick="return confirm('Вы уверены?')">Удалить</button>
+                                            </form>
+                                        </td>
+                                    </tr>
+                                </tbody>
+                            </table>
+                        </div>
+                    </div>
+                    <div class="col-12 px-0">
+                        <div class="block mb-4">
+                            <a class="btn btn-primary" href="/admin/category/edit/">Добавить категорию</a>
+                        </div>
+                    </div>
+                </div>
+        
+            </th:block>
+    </main>
+</body>
+
+</html>

src/main/resources/templates/contacts.html

@@ -0,0 +1,70 @@
+<!DOCTYPE html>
+<html lang="ru" xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout" layout:decorate="~{default}">
+
+<head>
+    <title>Контакты</title>
+</head>
+
+<body th:with="bodyClass='bg-white', mainClass='justify-content-center'">
+    <main layout:fragment="content">
+        <div class="row">
+            <div class="col-lg-5 px-0 me-lg-5">
+                <div class="block d-flex flex-column align-items-start">
+                    <p class="mb-4 mb-sm-5 lh-1" id="contacts-title">
+                        Контакты
+                    </p>
+                    <div class="contacts-item d-flex mb-5">
+                        <img src="phone-call.png" class="contacts-icon me-4" alt="phone-call" width="88" height="88">
+                        <div class="d-flex flex-column">
+                            <p class="contacts-item-main-info mb-3">
+                                +7 927 818-61-60
+                            </p>
+                            <p class="contacts-item-clarification">
+                                Служба клиентской поддержки
+                                c 8:00 - 22:00 (Мск)
+                            </p>
+                        </div>
+                    </div>
+                    <div class="contacts-item d-flex mb-5">
+                        <img src="email.png" class="contacts-icon me-4" alt="email" width="88" height="88">
+                        <div class="d-flex flex-column justify-content-center">
+                            <p class="contacts-item-main-info mb-3">
+                                readroom@mail.ru
+                            </p>
+                            <p class="contacts-item-clarification">
+                                Электронный адрес компании
+                            </p>
+                        </div>
+                    </div>
+                    <div class="contacts-item d-flex mb-3">
+                        <img src="skype.png" class="contacts-icon me-4" alt="skype" width="88" height="88">
+                        <div class="d-flex flex-column justify-content-center">
+                            <p class="contacts-item-main-info">
+                                Пообщайтесь с сотрудниками по видеосвязи
+                            </p>
+                        </div>
+                    </div>
+                    <a href="/" class="mb-3 mb-sm-4 text-decoration-none" id="skype-link">
+                        Перейти в Skype
+                    </a>
+                    <div class="mb-4 mb-sm-5 mt-2 mb-lg-0">
+                        <p class="mb-3" id="contacts-address">
+                            Наш адрес:
+                        </p>
+                        <p id="contacts-address-value">
+                            432064, Россия, г. Ульяновск, проспект Врача Сурова, 2А
+                        </p>
+                    </div>
+                </div>
+            </div>
+            <div class="col px-0 align-self-center">
+                <div class="block d-flex justify-content-center justify-content-lg-end">
+                    <img src="map.png" class="border border-black border-2 img-fluid h-100" alt="map" width="665"
+                        height="689">
+                </div>
+            </div>
+        </div>
+    </main>
+</body>
+
+</html>

src/main/resources/templates/default.html

@@ -0,0 +1,153 @@
+<!DOCTYPE html>
+<html lang="ru" xmlns:th="http://www.thymeleaf.org"
+    xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout"
+    xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity6">
+
+<head>
+    <meta charset="UTF-8" />
+    <link rel="icon" type="image/png" href="/logo.png" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title layout:title-pattern="$LAYOUT_TITLE - $CONTENT_TITLE">Читай-комната</title>
+    <script src="https://code.jquery.com/jquery-3.6.3.min.js"></script>
+    <script type="text/javascript" src="/webjars/bootstrap/5.3.3/dist/js/bootstrap.bundle.min.js"></script>
+    <link rel="stylesheet" href="/webjars/bootstrap/5.3.3/dist/css/bootstrap.min.css" />
+    <link rel="stylesheet" href="/webjars/bootstrap-icons/1.11.3/font/bootstrap-icons.min.css" />
+    <link rel="stylesheet" href="/css/style.css" />
+</head>
+
+<body class="d-flex flex-column min-vh-100" th:classappend="${bodyClass}">
+    <header class="w-100 position-sticky top-0 z-3">
+        <nav class="navbar navbar-expand-lg navbar-light">
+            <div class="container-md">
+                <a class="navbar-brand me-lg-5 d-flex align-items-center" href="/" id="logo">
+                    <img th:src="@{/logo.png}" alt="logo" class="me-2">
+                    Читай-комната
+                </a>
+                <button class="navbar-toggler ms-auto" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNav"
+                    aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
+                    <span class="navbar-toggler-icon"></span>
+                </button>
+                <div class="navbar-collapse collapse" id="navbarNav">
+                    <ul class="navbar-nav align-items-lg-center justify-content-lg-start w-100" th:with="activeLink=${#objects.nullSafe(servletPath, '')}">
+                        <li class="header-link nav-item ms-lg-2 me-lg-3">
+                            <a class="nav-link" href="/"
+                                th:classappend="${activeLink == '/' ? 'active' : ''}">
+                                Главная
+                            </a>
+                        </li>
+                        <li class="header-link nav-item me-lg-3">
+                            <a class="nav-link" href="/catalog"
+                                th:classappend="${activeLink.startsWith('/catalog') ? 'active' : ''}">
+                                Каталог
+                            </a>
+                        </li>
+                        <li class="header-link nav-item me-lg-5" id="header-contacts">
+                            <a class="nav-link" href="/contacts"
+                                th:classappend="${activeLink.startsWith('/contacts') ? 'active' : ''}">
+                                Контакты
+                            </a>
+                        </li>
+                        <div class="flex-grow-1 me-lg-4" id="header-search">
+                            <form class="h-25" th:action="@{/search}" method="get">
+                                <input type="hidden" th:name="filter" th:value="${filter}">
+                                <input type="hidden" th:name="page" th:value="${page}">
+                                <input class="form-control" th:name="searchInfo" th:value="${searchInfo != null ? searchInfo : ''}" type="search"
+                                    placeholder="Я ищу..." aria-label="Search" id="search-bar">
+                            </form>     
+                        </div>
+                        <th:block sec:authorize="isAuthenticated()" th:with="userName=${#authentication.name}">
+                            <a class="nav-link m-0 pe-0" href="/profile"
+                                th:classappend="${activeLink.startsWith('/profile') ? 'active' : ''}">
+                                [[${userName}]]
+                            </a>
+                            <p class="header-part d-none d-lg-block">&nbsp;/&nbsp;</p>
+                            <form th:action="@{/logout}" method="post">
+                                <button type="submit" class="header-part astext text-white text-start me-lg-3" onclick="return confirm('Вы уверены?')">Выйти</button>
+                            </form>
+                        </th:block>
+                        <th:block sec:authorize="isAnonymous()">
+                            <li class="nav-item">
+                                <a class="nav-link" href="/login"
+                                    th:classappend="${activeClass}">
+                                    Вход
+                                </a>
+                            </li>
+                            <p class="d-none d-lg-block">
+                                /
+                            </p>
+                            <li class="nav-item me-lg-3">
+                                <a class="nav-link" href="/signup"
+                                    th:classappend="${activeLink.startsWith('/signup') ? 'active' : ''}">
+                                    Регистрация
+                                </a>
+                            </li>
+                        </th:block>
+                        <li class="nav-item position-relative">
+                            <a class="nav-link pe-lg-0" href="/cart"
+                                th:classappend="${activeLink.startsWith('/cart') ? 'active-icon' : ''}">
+                                <img th:src="@{/card.png}" alt="cart" th:attr="width=${activeLink.startsWith('/cart') ? '35' : '30'}, 
+                                    height=${activeLink.startsWith('/cart') ? '40' : '35'}" id="cart-icon">
+                            </a>
+                            <span th:if="${totalCart > 0}" class="position-absolute" id="cart-link-count">[[${totalCart}]]</span>
+                        </li>
+                    </ul>
+                </div>
+            </div>
+        </nav>
+    </header>
+    <main class="container-md d-flex flex-column flex-grow-1" th:classappend="${mainClass}" layout:fragment="content">
+    </main>
+    <footer class="footer flex-shrink-0">
+        <div class="container-md" id="footer-container">
+            <div class="row d-flex align-items-center gy-3 gy-lg-0 gx-0" id="footer-row">
+                <div class="col-md-6 col-lg-4">
+                    <div class="block d-flex justify-content-center justify-content-md-start" id="footer-copyright">
+                        © И. А. Родионов, [[${#dates.year(#dates.createNow())}]].
+                    </div>
+                </div>
+                <div class="col-md-6 col-lg-3">
+                    <div class="block d-flex align-items-center justify-content-center justify-content-md-end">
+                        <img th:src="@{/telephone-call.png}" class="me-2" alt="telephone-call" width="32" height="32">
+                        <p id="footer-phone-number-text">
+                            +7 927 818-61-60
+                        </p>
+                    </div>
+                </div>
+                <div class="col-md-12 col-lg-5 mb-3 mb-lg-0">
+                    <div class="block d-flex align-items-center justify-content-center justify-content-lg-end">
+                        <p class="me-3" id="footer-social-media-text">
+                            Мы в соцсетях:
+                        </p>
+                        <a class="me-3" href="/">
+                            <img th:src="@{/vk.png}" alt="vk" width="32" height="32">
+                        </a>
+                        <a class="me-3" href="/">
+                            <img th:src="@{/youtube.png}" alt="youtube" width="32" height="32">
+                        </a>
+                        <a class="me-3" href="/">
+                            <img th:src="@{/telegram.png}" alt="telegram" width="32" height="32">
+                        </a>
+                        <a href="/">
+                            <img th:src="@{/odnoklassniki.png}" alt="odnoklassniki" width="32" height="32">
+                        </a>
+                    </div>
+                </div>
+            </div>
+        </div>
+    </footer>
+    <script th:inline="javascript">
+        $(document).ready(function () {
+            $('#search-bar').on('keypress', function (e) {
+                if (e.key === 'Enter') {
+                    e.preventDefault();
+                    const searchValue = $(this).val().trim(); 
+                    if (searchValue !== '') { 
+                        $(this).closest('form').submit();
+                    }
+                }
+            });
+        });
+    </script>
+</body>
+
+</html>

src/main/resources/templates/error.html

@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<html lang="ru" xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout" layout:decorate="~{default}">
+
+<head>
+    <title>Ошибка</title>
+</head>
+
+<body th:with="bodyClass='bg-white', mainClass=''">
+    <main layout:fragment="content">
+        <ul class="list-group mb-2">
+            <th:block th:if="${#strings.isEmpty(message)}">
+                <li class="list-group-item">
+                    Неизвестная ошибка
+                </li>
+            </th:block>
+            <th:block th:if="${not #strings.isEmpty(message)}">
+                <li class="list-group-item">
+                    <strong>Ошибка:</strong> [[${message}]]
+                </li>
+            </th:block>
+            <th:block th:if="${not #strings.isEmpty(url)}">
+                <li class="list-group-item">
+                    <strong>Адрес:</strong> [[${url}]]
+                </li>
+                <li class="list-group-item">
+                    <strong>Класс исключения:</strong> [[${exception}]]
+                </li>
+                <li class="list-group-item">
+                    [[${method}]] ([[${file}]]:[[${line}]])
+                </li>
+            </th:block>
+        </ul>
+        <a class="btn btn-primary button-fixed-width" href="/">На главную</a>
+    </main>
+</body>
+
+</html>

src/main/resources/templates/login.html

@@ -0,0 +1,47 @@
+<!DOCTYPE html>
+<html lang="ru" xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout" layout:decorate="~{default}">
+
+<head>
+    <title>Вход на сайт</title>
+</head>
+
+<body th:with="bodyClass='bg-white', mainClass='my-0', activeClass='active'">
+    <main layout:fragment="content">
+        <div class="row gy-3 justify-content-center">
+            <div class="col-12 mt-4">
+                <div class="block d-flex justify-content-center mb-3 mb-sm-4" id="login-title">
+                    Вход на сайт
+                </div>
+            </div>
+            <form class="col-lg-8 col-xl-7 col-xxl-6 m-0 mt-2 mt-sm-3 d-flex flex-column gap-2" action="#" th:action="@{/login}" method="post">
+                <div th:if="${param.error}" class="alert alert-danger mb-3 mb-sm-4 text-center">
+                    Неверный логин или пароль
+                </div>
+                <div th:if="${param.logout}" class="alert alert-success mb-3 mb-sm-4 text-center">
+                    Выход успешно произведен
+                </div>
+                <div th:if="${param.signup}" class="alert alert-success mb-3 mb-sm-4 text-center">
+                    Пользователь успешно создан
+                </div>
+                <div class="d-flex justify-content-center mb-3 mb-sm-4">
+                    <input type="text" id="username" name="username" placeholder="Имя пользователя" class="form-control w-75 border-black login-input-email" 
+                        required minlength="3" maxlength="20">
+                </div>
+                <div class="d-flex justify-content-center mb-3 mb-sm-4">
+                    <input type="password" id="password" name="password" placeholder="Пароль" class="form-control w-75 border-black login-input-password" 
+                        required minlength="3" maxlength="20">
+                </div>
+                <div class="form-check mb-3 mb-sm-4">
+                    <input class="form-check-input" type="checkbox" id="remember-me" name="remember-me" checked>
+                    <label class="form-check-label login-input-remember fw-bolder" for="remember-me">Запомнить меня.</label>
+                </div>
+                <div class="d-flex flex-column align-items-center">
+                    <button class="btn btn-primary w-50 rounded-5 login-btn mb-3" type="submit">Войти</button>
+                    <a class="btn btn-secondary w-25 rounded-5 login-btn" href="/signup" >Регистрация</a>
+                </div>
+            </form>
+        </div>
+    </main>
+</body>
+
+</html>

src/main/resources/templates/main-page.html

@@ -0,0 +1,93 @@
+<!DOCTYPE html>
+<html lang="ru" xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout" layout:decorate="~{default}">
+
+<head>
+    <title>Главная страница</title>
+</head>
+
+<body th:with="bodyClass='', mainClass='justify-content-center'">
+    <main layout:fragment="content">
+
+    <div class="row bg-white pb-1 mb-3 rounded-3 gy-3">
+        <div class="col-12 ms-2 mt-1">
+            <div class="main-page-section-title block d-flex align-items-end">
+                <img th:src="@{fire.png}" class="me-2" alt="fire" width="25" height="30" id="fire-icon">
+                <p class="main-page-section-title-text lh-1 m-0">
+                    Горячие новинки
+                </p>
+            </div>
+        </div>
+    
+        <div th:each="novelty : ${novelties}" class="col-6 col-md-4 col-lg-2">
+            <div class="block d-flex flex-column">
+                <div class="d-flex justify-content-center">
+                    <a th:href="@{/product-card/{id}(id=${novelty.id})}">
+                        <img th:src="@{${novelty.image != null && !#strings.isEmpty(novelty.image) ? novelty.image : 'placeholder_400_600.png'}}"
+                            class="main-page-book-cover" alt="book-cover-novelties" width="100" height="152">
+                    </a>
+                </div>
+                <div class="d-flex flex-column align-items-center align-items-md-start">
+                    <p class="main-page-price" th:text="${#numbers.formatDecimal(novelty.price, 0, 'COMMA', 0, 'POINT')} + ' ₽'"></p>
+                    <p class="main-page-book-title" th:text="${novelty.title}"></p>
+                    <p class="main-page-author" th:text="${novelty.author}"></p>
+                </div>
+            </div>
+        </div>
+    </div>
+
+    <div class="row bg-white pb-1 mb-3 rounded-3 gy-3">
+        <div class="col-12 ms-2 mt-1">
+            <div class="main-page-section-title block d-flex align-items-end">
+                <p class="main-page-section-title-text lh-1 m-0">
+                    Книги по акциям
+                </p>
+            </div>
+        </div>
+    
+        <div th:each="promotion : ${promotions}" class="col-6 col-md-4 col-lg-2">
+            <div class="block d-flex flex-column">
+                <div class="d-flex justify-content-center">
+                    <a th:href="@{/product-card/{id}(id=${promotion.id})}">
+                        <img th:src="@{${promotion.image != null && !#strings.isEmpty(promotion.image) ? promotion.image : 'placeholder_400_600.png'}}"
+                            class="main-page-book-cover" alt="book-cover-promotions" width="100" height="152">
+                    </a>
+                </div>
+                <div class="d-flex flex-column align-items-center align-items-md-start">
+                    <p class="main-page-price" th:text="${#numbers.formatDecimal(promotion.price, 0, 'COMMA', 0, 'POINT')} + ' ₽'"></p>
+                    <p class="main-page-book-title" th:text="${promotion.title}"></p>
+                    <p class="main-page-author" th:text="${promotion.author}"></p>
+                </div>
+            </div>
+        </div>
+    </div>
+
+    <div class="row bg-white pb-1 rounded-3 gy-3">
+        <div class="col-12 ms-2 mt-1">
+            <div class="main-page-section-title block d-flex align-items-end">
+                <p class="main-page-section-title-text lh-1 m-0">
+                    Выбор редакции
+                </p>
+            </div>
+        </div>
+    
+        <div th:each="recommendation : ${recommendations}" class="col-6 col-md-4 col-lg-2">
+            <div class="block d-flex flex-column">
+                <div class="d-flex justify-content-center">
+                    <a th:href="@{/product-card/{id}(id=${recommendation.id})}">
+                        <img th:src="@{${recommendation.image != null && !#strings.isEmpty(recommendation.image) ? recommendation.image : 'placeholder_400_600.png'}}"
+                            class="main-page-book-cover" alt="book-cover-recommendations" width="100" height="152">
+                    </a>
+                </div>
+                <div class="d-flex flex-column align-items-center align-items-md-start">
+                    <p class="main-page-price" th:text="${#numbers.formatDecimal(recommendation.price, 0, 'COMMA', 0, 'POINT')} + ' ₽'"></p>
+                    <p class="main-page-book-title" th:text="${recommendation.title}"></p>
+                    <p class="main-page-author" th:text="${recommendation.author}"></p>
+                </div>
+            </div>
+        </div>
+    </div>
+
+    </main>
+</body>
+
+</html>

src/main/resources/templates/order-check.html

@@ -0,0 +1,44 @@
+<!DOCTYPE html>
+<html lang="ru" xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout" layout:decorate="~{default}">
+
+<head>
+    <title>Панель администратора (заказы)</title>
+</head>
+
+<body th:with="bodyClass='bg-white', mainClass='my-0'">
+    <main layout:fragment="content">
+        <div class="ms-3 mt-3 me-3 w-75" th:object="${order}">
+            <div class="mb-3">
+                <label for="id" class="form-label">ID</label>
+                <input type="text" th:value="*{id}" id="id" class="form-control" readonly disabled>
+            </div>
+            <div class="mb-3">
+                <label for="date" class="form-label">Дата</label>
+                <input type="text" th:field="*{date}" id="date" class="form-control">
+            </div>
+            <div class="mb-3">
+                <label for="sum" class="form-label">Сумма</label>
+                <input type="text" th:field="*{sum}" id="sum" class="form-control">
+            </div>
+            <div class="mb-3">
+                <label for="count" class="form-label">Количество книг</label>
+                <input type="text" th:field="*{count}" id="count" class="form-control">
+            </div>
+            <p class="mb-3">Товары в заказе</p>
+            <th:block th:each="element : *{books}">
+                <div class="mb-3 d-flex">
+                    <p class="align-self-center w-25 ms-3 me-5">[[${element.book.title}]] — [[${element.book.author}]]</p>
+                    <div class='d-flex align-self-center ms-auto me-4'>
+                        <p class="align-self-center me-2" style="color: #ABABAB">
+                            [[${#numbers.formatDecimal(element.book.price, 0, 'COMMA', 0, 'POINT')}]] &#8381;
+                            * [[${element.count}]] = </p>
+                        <p th:text="${#numbers.formatDecimal(element.book.price * element.count, 0, 'COMMA', 0, 'POINT') + ' ₽'}" 
+                            class="align-self-center fs-4"></p>
+                    </div>
+                </div>
+            </th:block>
+        </div>
+    </main>
+</body>
+
+</html>