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138 changed files with 15708 additions and 36 deletions

48
.gitignore vendored
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# ---> Android
# Gradle files
.gradle/
build/
# Local configuration file (sdk path, etc)
local.properties
# Log/OS Files
*.log
# Android Studio generated files and folders
captures/
.externalNativeBuild/
.cxx/
*.apk
output.json
# IntelliJ
*.iml
.idea/
misc.xml
deploymentTargetDropDown.xml
render.experimental.xml
# Keystore files
*.jks
*.keystore
# Google Services (e.g. APIs or Firebase)
google-services.json
# Android Profiling
*.hprof
.gradle
/local.properties
/.idea/caches
/.idea/libraries
/.idea/modules.xml
/.idea/workspace.xml
/.idea/navEditor.xml
/.idea/assetWizardSettings.xml
.DS_Store
/build
/captures
.externalNativeBuild
.cxx
local.properties

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.idea/.gitignore vendored Normal file
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# Default ignored files
/shelf/
/workspace.xml

1
.idea/.name Normal file
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My Application

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<component name="ProjectCodeStyleConfiguration">
<code_scheme name="Project" version="173">
<JetCodeStyleSettings>
<option name="CODE_STYLE_DEFAULTS" value="KOTLIN_OFFICIAL" />
</JetCodeStyleSettings>
<codeStyleSettings language="XML">
<option name="FORCE_REARRANGE_MODE" value="1" />
<indentOptions>
<option name="CONTINUATION_INDENT_SIZE" value="4" />
</indentOptions>
<arrangement>
<rules>
<section>
<rule>
<match>
<AND>
<NAME>xmlns:android</NAME>
<XML_ATTRIBUTE />
<XML_NAMESPACE>^$</XML_NAMESPACE>
</AND>
</match>
</rule>
</section>
<section>
<rule>
<match>
<AND>
<NAME>xmlns:.*</NAME>
<XML_ATTRIBUTE />
<XML_NAMESPACE>^$</XML_NAMESPACE>
</AND>
</match>
<order>BY_NAME</order>
</rule>
</section>
<section>
<rule>
<match>
<AND>
<NAME>.*:id</NAME>
<XML_ATTRIBUTE />
<XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
</AND>
</match>
</rule>
</section>
<section>
<rule>
<match>
<AND>
<NAME>.*:name</NAME>
<XML_ATTRIBUTE />
<XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
</AND>
</match>
</rule>
</section>
<section>
<rule>
<match>
<AND>
<NAME>name</NAME>
<XML_ATTRIBUTE />
<XML_NAMESPACE>^$</XML_NAMESPACE>
</AND>
</match>
</rule>
</section>
<section>
<rule>
<match>
<AND>
<NAME>style</NAME>
<XML_ATTRIBUTE />
<XML_NAMESPACE>^$</XML_NAMESPACE>
</AND>
</match>
</rule>
</section>
<section>
<rule>
<match>
<AND>
<NAME>.*</NAME>
<XML_ATTRIBUTE />
<XML_NAMESPACE>^$</XML_NAMESPACE>
</AND>
</match>
<order>BY_NAME</order>
</rule>
</section>
<section>
<rule>
<match>
<AND>
<NAME>.*</NAME>
<XML_ATTRIBUTE />
<XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
</AND>
</match>
<order>ANDROID_ATTRIBUTE_ORDER</order>
</rule>
</section>
<section>
<rule>
<match>
<AND>
<NAME>.*</NAME>
<XML_ATTRIBUTE />
<XML_NAMESPACE>.*</XML_NAMESPACE>
</AND>
</match>
<order>BY_NAME</order>
</rule>
</section>
</rules>
</arrangement>
</codeStyleSettings>
<codeStyleSettings language="kotlin">
<option name="CODE_STYLE_DEFAULTS" value="KOTLIN_OFFICIAL" />
</codeStyleSettings>
</code_scheme>
</component>

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<component name="ProjectCodeStyleConfiguration">
<state>
<option name="USE_PER_PROJECT_SETTINGS" value="true" />
</state>
</component>

6
.idea/compiler.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="CompilerConfiguration">
<bytecodeTargetLevel target="17" />
</component>
</project>

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.idea/gradle.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="GradleMigrationSettings" migrationVersion="1" />
<component name="GradleSettings">
<option name="linkedExternalProjectsSettings">
<GradleProjectSettings>
<option name="testRunner" value="GRADLE" />
<option name="distributionType" value="DEFAULT_WRAPPED" />
<option name="externalProjectPath" value="$PROJECT_DIR$" />
<option name="gradleJvm" value="jbr-17" />
<option name="modules">
<set>
<option value="$PROJECT_DIR$" />
<option value="$PROJECT_DIR$/app" />
</set>
</option>
</GradleProjectSettings>
</option>
</component>
</project>

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<component name="InspectionProjectProfileManager">
<profile version="1.0">
<option name="myName" value="Project Default" />
<inspection_tool class="PreviewAnnotationInFunctionWithParameters" enabled="true" level="ERROR" enabled_by_default="true">
<option name="composableFile" value="true" />
<option name="previewFile" value="true" />
</inspection_tool>
<inspection_tool class="PreviewApiLevelMustBeValid" enabled="true" level="ERROR" enabled_by_default="true">
<option name="composableFile" value="true" />
<option name="previewFile" value="true" />
</inspection_tool>
<inspection_tool class="PreviewDimensionRespectsLimit" enabled="true" level="WARNING" enabled_by_default="true">
<option name="composableFile" value="true" />
<option name="previewFile" value="true" />
</inspection_tool>
<inspection_tool class="PreviewFontScaleMustBeGreaterThanZero" enabled="true" level="ERROR" enabled_by_default="true">
<option name="composableFile" value="true" />
<option name="previewFile" value="true" />
</inspection_tool>
<inspection_tool class="PreviewMultipleParameterProviders" enabled="true" level="ERROR" enabled_by_default="true">
<option name="composableFile" value="true" />
<option name="previewFile" value="true" />
</inspection_tool>
<inspection_tool class="PreviewMustBeTopLevelFunction" enabled="true" level="ERROR" enabled_by_default="true">
<option name="composableFile" value="true" />
<option name="previewFile" value="true" />
</inspection_tool>
<inspection_tool class="PreviewNeedsComposableAnnotation" enabled="true" level="ERROR" enabled_by_default="true">
<option name="composableFile" value="true" />
<option name="previewFile" value="true" />
</inspection_tool>
<inspection_tool class="PreviewNotSupportedInUnitTestFiles" enabled="true" level="ERROR" enabled_by_default="true">
<option name="composableFile" value="true" />
<option name="previewFile" value="true" />
</inspection_tool>
<inspection_tool class="PreviewPickerAnnotation" enabled="true" level="ERROR" enabled_by_default="true">
<option name="composableFile" value="true" />
<option name="previewFile" value="true" />
</inspection_tool>
<inspection_tool class="UnusedEquals" enabled="false" level="WARNING" enabled_by_default="false" />
</profile>
</component>

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.idea/kotlinc.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="KotlinJpsPluginSettings">
<option name="version" value="1.8.20" />
</component>
</project>

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.idea/misc.xml Normal file
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<project version="4">
<component name="ExternalStorageConfigurationManager" enabled="true" />
<component name="ProjectRootManager" version="2" languageLevel="JDK_17" default="true" project-jdk-name="jbr-17" project-jdk-type="JavaSDK">
<output url="file://$PROJECT_DIR$/build/classes" />
</component>
<component name="ProjectType">
<option name="id" value="Android" />
</component>
</project>

13
.idea/vcs.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="GitSharedSettings">
<option name="FORCE_PUSH_PROHIBITED_PATTERNS">
<list>
<option value="main" />
</list>
</option>
</component>
<component name="VcsDirectoryMappings">
<mapping directory="$PROJECT_DIR$" vcs="Git" />
</component>
</project>

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# PIbd-32_Turner_I.A._Mobile

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Server/data.json Normal file

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Server/package.json Normal file
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{
"name": "fake-db",
"version": "1.0.0",
"scripts": {
"start": "json-server --watch data.json --host 0.0.0.0 -p 8079"
},
"dependencies": {
},
"devDependencies": {
"json-server": "0.17.4"
}
}

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app/.gitignore vendored Normal file
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/build

95
app/build.gradle.kts Normal file
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plugins {
id("com.android.application")
id("org.jetbrains.kotlin.android")
id("com.google.devtools.ksp")
id("org.jetbrains.kotlin.plugin.serialization")
}
android {
namespace = "com.example.myapplication"
compileSdk = 33
defaultConfig {
applicationId = "com.example.myapplication"
minSdk = 24
targetSdk = 33
versionCode = 1
versionName = "1.0"
testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
vectorDrawables {
useSupportLibrary = true
}
}
buildTypes {
release {
isMinifyEnabled = false
proguardFiles(getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro")
}
}
compileOptions {
sourceCompatibility = JavaVersion.VERSION_17
targetCompatibility = JavaVersion.VERSION_17
}
kotlinOptions {
jvmTarget = "17"
}
buildFeatures {
compose = true
}
composeOptions {
kotlinCompilerExtensionVersion = "1.4.5"
}
packaging {
resources {
excludes += "/META-INF/{AL2.0,LGPL2.1}"
}
}
}
dependencies {
implementation("androidx.core:core-ktx:1.9.0")
implementation("androidx.lifecycle:lifecycle-runtime-ktx:2.6.1")
implementation("androidx.activity:activity-compose:1.7.0")
implementation(platform("androidx.compose:compose-bom:2023.03.00"))
implementation("androidx.navigation:navigation-compose:2.6.0")
implementation("androidx.compose.ui:ui")
implementation("androidx.compose.ui:ui-graphics")
implementation("androidx.compose.ui:ui-tooling-preview")
implementation("androidx.compose.material3:material3")
implementation("dev.materii.pullrefresh:pullrefresh:1.0.0")
val room_version = "2.5.2"
implementation("androidx.room:room-runtime:$room_version")
annotationProcessor("androidx.room:room-compiler:$room_version")
ksp("androidx.room:room-compiler:$room_version")
implementation("androidx.room:room-ktx:$room_version")
implementation("androidx.room:room-paging:$room_version")
testImplementation("junit:junit:4.13.2")
androidTestImplementation("androidx.test.ext:junit:1.1.5")
androidTestImplementation("androidx.test.espresso:espresso-core:3.5.1")
androidTestImplementation(platform("androidx.compose:compose-bom:2023.03.00"))
androidTestImplementation("androidx.compose.ui:ui-test-junit4")
debugImplementation("androidx.compose.ui:ui-tooling")
debugImplementation("androidx.compose.ui:ui-test-manifest")
// Paging
val paging_version = "3.2.0-rc01"
implementation("androidx.paging:paging-runtime:$paging_version")
implementation("androidx.paging:paging-compose:$paging_version")
// retrofit
val retrofitVersion = "2.9.0"
implementation("com.squareup.retrofit2:retrofit:$retrofitVersion")
implementation("com.squareup.okhttp3:logging-interceptor:4.11.0")
implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.5.1")
implementation("com.jakewharton.retrofit:retrofit2-kotlinx-serialization-converter:1.0.0")
// LiveData | DataStore
implementation("androidx.compose.runtime:runtime-livedata:1.5.4")
implementation("androidx.datastore:datastore-preferences:1.0.0")
}

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app/proguard-rules.pro vendored Normal file
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# Add project specific ProGuard rules here.
# You can control the set of applied configuration files using the
# proguardFiles setting in build.gradle.
#
# For more details, see
# http://developer.android.com/guide/developing/tools/proguard.html
# If your project uses WebView with JS, uncomment the following
# and specify the fully qualified class name to the JavaScript interface
# class:
#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
# public *;
#}
# Uncomment this to preserve the line number information for
# debugging stack traces.
#-keepattributes SourceFile,LineNumberTable
# If you keep the line number information, uncomment this to
# hide the original source file name.
#-renamesourcefileattribute SourceFile

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package com.example.myapplication
import androidx.test.platform.app.InstrumentationRegistry
import androidx.test.ext.junit.runners.AndroidJUnit4
import org.junit.Test
import org.junit.runner.RunWith
import org.junit.Assert.*
/**
* Instrumented test, which will execute on an Android device.
*
* See [testing documentation](http://d.android.com/tools/testing).
*/
@RunWith(AndroidJUnit4::class)
class ExampleInstrumentedTest {
@Test
fun useAppContext() {
// Context of the app under test.
val appContext = InstrumentationRegistry.getInstrumentation().targetContext
assertEquals("com.example.myapplication", appContext.packageName)
}
}

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<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools">
<uses-permission android:name="android.permission.INTERNET"/>
<application
android:name=".MyApplication"
android:allowBackup="true"
android:dataExtractionRules="@xml/data_extraction_rules"
android:fullBackupContent="@xml/backup_rules"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/Theme.MyApplication"
tools:targetApi="31"
android:networkSecurityConfig="@xml/network_security_config"
android:vmSafeMode="true">
<activity
android:screenOrientation="portrait"
android:name=".MainActivity"
android:exported="true"
android:label="@string/app_name"
android:theme="@style/Theme.MyApplication">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>

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package com.example.myapplication
import android.content.Context
import android.content.res.Configuration
import android.os.Bundle
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Surface
import androidx.compose.runtime.Composable
import androidx.compose.ui.Modifier
import androidx.compose.ui.tooling.preview.Preview
import com.example.myapplication.composeui.authenticator.Authenticator
import com.example.myapplication.composeui.navigation.MainNavbar
import com.example.myapplication.ui.theme.MyApplicationTheme
class MainActivity : ComponentActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
MainActivity.appContext = applicationContext
setContent {
MyApplicationTheme {
Surface(
modifier = Modifier.fillMaxSize(),
color = MaterialTheme.colorScheme.background
) {
Authenticator()
MainNavbar();
}
}
}
}
companion object {
lateinit var appContext: Context
}
}
@Preview(name = "Light Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_NO)
@Preview(name = "Dark Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_YES)
@Composable
fun MainNavbarPreview() {
MyApplicationTheme {
Surface(
color = MaterialTheme.colorScheme.background
) {
MainNavbar()
}
}
}

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package com.example.myapplication
import android.app.Application
import com.example.myapplication.db.database.AppContainer
import com.example.myapplication.db.database.AppDataContainer
class MyApplication : Application() {
lateinit var container: AppContainer
override fun onCreate() {
super.onCreate()
container = AppDataContainer(this)
}
}

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package com.example.myapplication.api
import com.jakewharton.retrofit2.converter.kotlinx.serialization.asConverterFactory
import com.example.myapplication.api.model.AuthorRemote
import com.example.myapplication.api.model.BookRemote
import com.example.myapplication.api.model.UserRemote
import kotlinx.serialization.json.Json
import okhttp3.MediaType.Companion.toMediaType
import okhttp3.OkHttpClient
import okhttp3.logging.HttpLoggingInterceptor
import retrofit2.Retrofit
import retrofit2.http.Body
import retrofit2.http.DELETE
import retrofit2.http.GET
import retrofit2.http.POST
import retrofit2.http.PUT
import retrofit2.http.Path
import retrofit2.http.Query
interface ServerService{
@GET("books")
suspend fun getBooks(): List<BookRemote>
@GET("books/{id}")
suspend fun getBook(
@Path("id") id: Int,
): BookRemote
@GET("books")
suspend fun getBySearch(
@Query("title") searchStr: String,
): List<BookRemote>
@GET("books")
suspend fun getByAuthor(
@Query("authorId") auth: Int,
): List<BookRemote>
@GET("books")
suspend fun getByUser(
@Query("userId") user: Int,
): List<BookRemote>
@GET("books")
suspend fun getBooks(
@Query("_page") page: Int,
@Query("_limit") limit: Int,
): List<BookRemote>
@POST("books")
suspend fun createBook(
@Body book: BookRemote,
): BookRemote
@PUT("books/{id}")
suspend fun updateBook(
@Path("id") id: Int,
@Body book: BookRemote,
): BookRemote
@DELETE("books/{id}")
suspend fun deleteBook(
@Path("id") id: Int,
): BookRemote
@GET("authors")
suspend fun getAuthors(): List<AuthorRemote>
@GET("authors")
suspend fun getAuthors(
@Query("_page") page: Int,
@Query("_limit") limit: Int,
): List<AuthorRemote>
@GET("authors/{id}")
suspend fun getAuthor(
@Path("id") id: Int,
): AuthorRemote
@POST("authors")
suspend fun createAuthor(
@Body author: AuthorRemote,
): AuthorRemote
@PUT("authors/{id}")
suspend fun updateAuthor(
@Path("id") id: Int,
@Body author: AuthorRemote,
): AuthorRemote
@DELETE("authors/{id}")
suspend fun deleteAuthor(
@Path("id") id: Int,
): AuthorRemote
@GET("users")
suspend fun getUsers(): List<UserRemote>
@GET("users/{id}")
suspend fun getUser(
@Path("id") id: Int,
): UserRemote
@GET("users")
suspend fun getUserByLoginPass(
@Query("login") login: String,
@Query("password") password: String
): List<UserRemote>
@POST("users")
suspend fun createUser(
@Body user: UserRemote,
): UserRemote
@PUT("users/{id}")
suspend fun updateUser(
@Path("id") id: Int,
@Body user: UserRemote,
): UserRemote
@DELETE("users/{id}")
suspend fun deleteUser(
@Path("id") id: Int,
): UserRemote
companion object {
private const val BASE_URL = "http://192.168.43.198:8079/"
@Volatile
private var INSTANCE: ServerService? = null
fun getInstance(): ServerService {
return INSTANCE ?: synchronized(this) {
val logger = HttpLoggingInterceptor()
logger.level = HttpLoggingInterceptor.Level.BASIC
val client = OkHttpClient.Builder()
.addInterceptor(logger)
.build()
val json = Json { ignoreUnknownKeys = true } // Создаем экземпляр Json с ignoreUnknownKeys = true
return Retrofit.Builder()
.baseUrl(BASE_URL)
.client(client)
.addConverterFactory(json.asConverterFactory("application/json".toMediaType())) // Применяем конфигурацию Json
.build()
.create(ServerService::class.java)
.also { INSTANCE = it }
}
}
}
}

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package com.example.myapplication.api.model
import com.example.myapplication.db.model.Author
import kotlinx.serialization.Serializable
@Serializable
data class AuthorRemote(
val id: Int = 0,
val name: String = "",
){
override fun equals(other: Any?): Boolean {
if (this === other) return true
if (javaClass != other?.javaClass) return false
other as AuthorRemote
if (id != other.id) return false
if (name != other.name) return false
return true
}
override fun hashCode(): Int {
var result = id
result = 31 * result + name.hashCode()
return result
}
}
fun AuthorRemote.toAuthor(): Author = Author(
id,
name
)
fun Author.toAuthorRemote(): AuthorRemote = AuthorRemote(
id,
name
)

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package com.example.myapplication.api.model
import com.example.myapplication.db.database.Converters
import com.example.myapplication.db.model.Book
import kotlinx.serialization.Serializable
private val __converters = Converters()
@Serializable
data class BookRemote(
val id: Int = 0,
val title: String = "",
val description: String = "",
val content: String = "",
val cover: ByteArray? = null,
val authorId: Int = 0,
val userId: Int = 0
){
override fun equals(other: Any?): Boolean {
if (this === other) return true
if (javaClass != other?.javaClass) return false
other as BookRemote
if (id != other.id) return false
if (title != other.title) return false
if (description != other.description) return false
if (content != other.content) return false
if (cover != null) {
if (other.cover == null) return false
if (!cover.contentEquals(other.cover)) return false
} else if (other.cover != null) return false
if (authorId != other.authorId) return false
if (userId != other.userId) return false
return true
}
override fun hashCode(): Int {
var result = id
result = 31 * result + title.hashCode()
result = 31 * result + description.hashCode()
result = 31 * result + content.hashCode()
result = 31 * result + (cover?.contentHashCode() ?: 0)
result = 31 * result + authorId
result = 31 * result + userId
return result
}
}
fun BookRemote.toBook(): Book = Book(
id,
title,
description,
content,
cover?.let { __converters.toBitmap(it) },
authorId,
userId
)
fun Book.toBookRemote(): BookRemote = BookRemote(
id,
title,
description,
content,
cover?.let { __converters.fromBitmap(it) },
authorId,
userId
)

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package com.example.myapplication.api.model
import com.example.myapplication.db.model.User
import kotlinx.serialization.Serializable
@Serializable
data class UserRemote(
val id: Int = 0,
val login: String = "",
val password: String = "",
val email: String = "",
val role: String = ""
){
override fun equals(other: Any?): Boolean {
if (this === other) return true
if (javaClass != other?.javaClass) return false
other as UserRemote
if (id != other.id) return false
if (login != other.login) return false
if (password != other.password) return false
if (email != other.email) return false
if (role != other.role) return false
return true
}
override fun hashCode(): Int {
var result = id
result = 31 * result + login.hashCode()
result = 31 * result + password.hashCode()
result = 31 * result + email.hashCode()
result = 31 * result + role.hashCode()
return result
}
}
fun UserRemote.toUser(): User = User(
id,
login,
password,
email,
role
)
fun User.toUserRemote(): UserRemote = UserRemote(
uid,
login,
password,
email,
role
)

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package com.example.myapplication.api.respositories.Mediator
import android.util.Log
import androidx.paging.ExperimentalPagingApi
import androidx.paging.LoadType
import androidx.paging.PagingState
import androidx.paging.RemoteMediator
import androidx.room.withTransaction
import com.example.myapplication.api.ServerService
import com.example.myapplication.api.model.toAuthor
import com.example.myapplication.api.model.toBook
import com.example.myapplication.db.database.AppDatabase
import com.example.myapplication.db.model.Author
import com.example.myapplication.db.model.RemoteKeyType
import com.example.myapplication.db.model.RemoteKeys
import com.example.myapplication.db.respository.OfflineAuthorRepository
import com.example.myapplication.db.respository.OfflineBookRepository
import com.example.myapplication.db.respository.OfflineRemoteKeyRepository
import retrofit2.HttpException
import java.io.IOException
@OptIn(ExperimentalPagingApi::class)
class AuthorRemoteMediator(
private val service: ServerService,
private val dbAuthorRepository: OfflineAuthorRepository,
private val dbBookRepository: OfflineBookRepository,
private val dbRemoteKeyRepository: OfflineRemoteKeyRepository,
private val database: AppDatabase
): RemoteMediator<Int, Author>() {
override suspend fun initialize(): RemoteMediator.InitializeAction {
return RemoteMediator.InitializeAction.LAUNCH_INITIAL_REFRESH
}
override suspend fun load(
loadType: LoadType,
state: PagingState<Int, Author>
): RemoteMediator.MediatorResult {
val page = when (loadType) {
LoadType.REFRESH -> {
val remoteKeys = getRemoteKeyClosestToCurrentPosition(state)
remoteKeys?.nextKey?.minus(1) ?: 1
}
LoadType.PREPEND -> {
val remoteKeys = getRemoteKeyForFirstItem(state)
remoteKeys?.prevKey
?: return RemoteMediator.MediatorResult.Success(endOfPaginationReached = remoteKeys != null)
}
LoadType.APPEND -> {
val remoteKeys = getRemoteKeyForLastItem(state)
remoteKeys?.nextKey
?: return RemoteMediator.MediatorResult.Success(endOfPaginationReached = remoteKeys != null)
}
}
try {
val authors = service.getAuthors(page, state.config.pageSize).map{it.toAuthor()}
val books = service.getBooks().map { it.toBook() }
Log.i("Authors info", authors.toString())
Log.i("Books info", books.toString())
val endOfPaginationReached = authors.isEmpty()
database.withTransaction {
if (loadType == LoadType.REFRESH) {
dbRemoteKeyRepository.deleteRemoteKey(RemoteKeyType.AUTHOR)
dbBookRepository.clearAll()
dbAuthorRepository.clearAll()
}
val prevKey = if (page == 1) null else page - 1
val nextKey = if (endOfPaginationReached) null else page + 1
val keys = authors.map {
RemoteKeys(
entityId = it.id,
type = RemoteKeyType.AUTHOR,
prevKey = prevKey,
nextKey = nextKey
)
}
dbRemoteKeyRepository.createRemoteKeys(keys)
dbAuthorRepository.insertAuthors(authors)
try{
dbBookRepository.insertBooks(books)
}catch (_: Exception){ }
}
return RemoteMediator.MediatorResult.Success(endOfPaginationReached = endOfPaginationReached)
} catch (exception: IOException) {
return RemoteMediator.MediatorResult.Error(exception)
} catch (exception: HttpException) {
return RemoteMediator.MediatorResult.Error(exception)
}
}
private suspend fun getRemoteKeyForLastItem(state: PagingState<Int, Author>): RemoteKeys? {
return state.pages.lastOrNull { it.data.isNotEmpty() }?.data?.lastOrNull()
?.let { author ->
dbRemoteKeyRepository.getAllRemoteKeys(author.id, RemoteKeyType.AUTHOR)
}
}
private suspend fun getRemoteKeyForFirstItem(state: PagingState<Int, Author>): RemoteKeys? {
return state.pages.firstOrNull { it.data.isNotEmpty() }?.data?.firstOrNull()
?.let { author ->
dbRemoteKeyRepository.getAllRemoteKeys(author.id, RemoteKeyType.AUTHOR)
}
}
private suspend fun getRemoteKeyClosestToCurrentPosition(
state: PagingState<Int, Author>
): RemoteKeys? {
return state.anchorPosition?.let { position ->
state.closestItemToPosition(position)?.id?.let { authorUid ->
dbRemoteKeyRepository.getAllRemoteKeys(authorUid, RemoteKeyType.AUTHOR)
}
}
}
}

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package com.example.myapplication.api.respositories.Mediator
import android.util.Log
import androidx.paging.ExperimentalPagingApi
import androidx.paging.LoadType
import androidx.paging.PagingState
import androidx.paging.RemoteMediator
import androidx.room.withTransaction
import com.example.myapplication.api.ServerService
import com.example.myapplication.api.model.toAuthor
import com.example.myapplication.api.model.toBook
import com.example.myapplication.api.model.toUser
import com.example.myapplication.api.respositories.RestAuthorRepository
import com.example.myapplication.api.respositories.RestUserRepository
import com.example.myapplication.db.database.AppDatabase
import com.example.myapplication.db.model.Book
import com.example.myapplication.db.model.RemoteKeyType
import com.example.myapplication.db.model.RemoteKeys
import com.example.myapplication.db.respository.OfflineAuthorRepository
import com.example.myapplication.db.respository.OfflineBookRepository
import com.example.myapplication.db.respository.OfflineRemoteKeyRepository
import com.example.myapplication.db.respository.OfflineUserRepository
import retrofit2.HttpException
import java.io.IOException
@OptIn(ExperimentalPagingApi::class)
class BookRemoteMediator(
private val service: ServerService,
private val dbBookRepository: OfflineBookRepository,
private val dbAuthorRepository: OfflineAuthorRepository,
private val dbUserRepository: OfflineUserRepository,
private val dbRemoteKeyRepository: OfflineRemoteKeyRepository,
private val database: AppDatabase
) : RemoteMediator<Int, Book>() {
override suspend fun initialize(): InitializeAction {
return InitializeAction.LAUNCH_INITIAL_REFRESH
}
override suspend fun load(
loadType: LoadType,
state: PagingState<Int, Book>
): MediatorResult {
val page = when (loadType) {
LoadType.REFRESH -> {
val remoteKeys = getRemoteKeyClosestToCurrentPosition(state)
remoteKeys?.nextKey?.minus(1) ?: 1
}
LoadType.PREPEND -> {
val remoteKeys = getRemoteKeyForFirstItem(state)
remoteKeys?.prevKey
?: return MediatorResult.Success(endOfPaginationReached = remoteKeys != null)
}
LoadType.APPEND -> {
val remoteKeys = getRemoteKeyForLastItem(state)
remoteKeys?.nextKey
?: return MediatorResult.Success(endOfPaginationReached = remoteKeys != null)
}
}
try {
val books = service.getBooks(page, state.config.pageSize).map { it.toBook() }
val authors = service.getAuthors().map { it.toAuthor() }
val users = service.getUsers().map { it.toUser() }
Log.i("Books info", books.toString())
val endOfPaginationReached = books.isEmpty()
database.withTransaction {
if (loadType == LoadType.REFRESH) {
dbRemoteKeyRepository.deleteRemoteKey(RemoteKeyType.BOOK)
dbBookRepository.clearAll()
dbAuthorRepository.clearAll()
dbUserRepository.clearAll()
}
val prevKey = if (page == 1) null else page - 1
val nextKey = if (endOfPaginationReached) null else page + 1
val keys = books.map {
RemoteKeys(
entityId = it.id,
type = RemoteKeyType.BOOK,
prevKey = prevKey,
nextKey = nextKey
)
}
dbRemoteKeyRepository.createRemoteKeys(keys)
try{
dbAuthorRepository.insertAuthors(authors)
}catch (_: Exception){ }
try{
dbUserRepository.insertUsers(users)
}catch (_: Exception){ }
dbBookRepository.insertBooks(books)
}
return MediatorResult.Success(endOfPaginationReached = endOfPaginationReached)
} catch (exception: IOException) {
return MediatorResult.Error(exception)
} catch (exception: HttpException) {
return MediatorResult.Error(exception)
}
}
private suspend fun getRemoteKeyForLastItem(state: PagingState<Int, Book>): RemoteKeys? {
return state.pages.lastOrNull { it.data.isNotEmpty() }?.data?.lastOrNull()
?.let { book ->
dbRemoteKeyRepository.getAllRemoteKeys(book.id, RemoteKeyType.BOOK)
}
}
private suspend fun getRemoteKeyForFirstItem(state: PagingState<Int, Book>): RemoteKeys? {
return state.pages.firstOrNull { it.data.isNotEmpty() }?.data?.firstOrNull()
?.let { book ->
dbRemoteKeyRepository.getAllRemoteKeys(book.id, RemoteKeyType.BOOK)
}
}
private suspend fun getRemoteKeyClosestToCurrentPosition(
state: PagingState<Int, Book>
): RemoteKeys? {
return state.anchorPosition?.let { position ->
state.closestItemToPosition(position)?.id?.let { bookUid ->
dbRemoteKeyRepository.getAllRemoteKeys(bookUid, RemoteKeyType.BOOK)
}
}
}
}

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package com.example.myapplication.api.respositories
import android.util.Log
import androidx.paging.ExperimentalPagingApi
import androidx.paging.Pager
import androidx.paging.PagingConfig
import androidx.paging.PagingData
import com.example.myapplication.api.ServerService
import com.example.myapplication.db.database.AppDatabase
import com.example.myapplication.db.database.AppContainer
import com.example.myapplication.db.respository.OfflineAuthorRepository
import com.example.myapplication.db.respository.OfflineRemoteKeyRepository
import com.example.myapplication.db.respository.AuthorRepository
import com.example.myapplication.api.model.toAuthor
import com.example.myapplication.api.model.toAuthorRemote
import com.example.myapplication.db.model.Author
import com.example.myapplication.api.respositories.Mediator.AuthorRemoteMediator
import com.example.myapplication.db.respository.OfflineBookRepository
import kotlinx.coroutines.flow.Flow
class RestAuthorRepository(
private val service: ServerService,
private val dbAuthorRepository: OfflineAuthorRepository,
private val dbBookRepository: OfflineBookRepository,
private val dbRemoteKeyRepository: OfflineRemoteKeyRepository,
private val database: AppDatabase
): AuthorRepository {
override suspend fun getAll(): List<Author> {
return service.getAuthors().map{x -> x.toAuthor()}
}
override suspend fun getAllDrop(): List<Author> {
return service.getAuthors().map{x -> x.toAuthor()}
}
override suspend fun getByUid(uid: Int): Author {
return service.getAuthor(uid).toAuthor()
}
override suspend fun insertAuthor(author: Author) {
dbAuthorRepository.insertAuthor(service.createAuthor(author.toAuthorRemote()).toAuthor())
}
override suspend fun updateAuthor(author: Author) {
service.updateAuthor(author.id, author.toAuthorRemote())
dbAuthorRepository.updateAuthor(author)
}
override suspend fun deleteAuthor(author: Author) {
service.deleteAuthor(author.id)
dbAuthorRepository.deleteAuthor(author)
}
override fun loadAllAuthorsPaged(): Flow<PagingData<Author>> {
Log.d(RestAuthorRepository::class.simpleName, "Get authors")
val pagingSourceFactory = { dbAuthorRepository.loadAuthorsPaged() }
@OptIn(ExperimentalPagingApi::class)
return Pager(
config = PagingConfig(
pageSize = AppContainer.LIMIT,
enablePlaceholders = false
),
remoteMediator = AuthorRemoteMediator(
service,
dbAuthorRepository,
dbBookRepository,
dbRemoteKeyRepository,
database,
),
pagingSourceFactory = pagingSourceFactory
).flow
}
}

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package com.example.myapplication.api.respositories
import android.util.Log
import androidx.paging.ExperimentalPagingApi
import androidx.paging.Pager
import androidx.paging.PagingConfig
import androidx.paging.PagingData
import com.example.myapplication.api.ServerService
import com.example.myapplication.db.respository.OfflineBookRepository
import com.example.myapplication.db.respository.OfflineRemoteKeyRepository
import com.example.myapplication.db.database.AppDatabase
import com.example.myapplication.db.respository.BookRepository
import com.example.myapplication.api.model.toBook
import com.example.myapplication.api.model.toBookRemote
import com.example.myapplication.api.respositories.Mediator.BookRemoteMediator
import com.example.myapplication.db.database.AppContainer
import com.example.myapplication.db.model.Book
import com.example.myapplication.db.respository.OfflineAuthorRepository
import com.example.myapplication.db.respository.OfflineUserRepository
import kotlinx.coroutines.flow.Flow
class RestBookRepository(
private val service: ServerService,
private val dbBookRepository: OfflineBookRepository,
private val dbAuthorRepository: OfflineAuthorRepository,
private val dbUserRepository: OfflineUserRepository,
private val dbRemoteKeyRepository: OfflineRemoteKeyRepository,
private val database: AppDatabase
):BookRepository {
override suspend fun getAll(): List<Book> {
return service.getBooks().map{x -> x.toBook()}
}
override suspend fun getByUid(uid: Int): Book {
return service.getBook(uid).toBook()
}
override suspend fun getBySearch(searchStr: String): List<Book> {
return service.getBySearch(searchStr).map{x -> x.toBook()}
}
override suspend fun getByAuthorId(authorId: Int): List<Book> {
return service.getByAuthor(authorId).map{ x -> x.toBook()}
}
override suspend fun getByUserId(userId: Int): List<Book> {
return service.getByUser(userId).map{ x -> x.toBook()}
}
override fun loadAllBooksPaged(): Flow<PagingData<Book>> {
Log.d(RestBookRepository::class.simpleName, "Get books")
val pagingSourceFactory = { dbBookRepository.loadBooksPaged() }
@OptIn(ExperimentalPagingApi::class)
return Pager(
config = PagingConfig(
pageSize = AppContainer.LIMIT,
enablePlaceholders = false
),
remoteMediator = BookRemoteMediator(
service,
dbBookRepository,
dbAuthorRepository,
dbUserRepository,
dbRemoteKeyRepository,
database,
),
pagingSourceFactory = pagingSourceFactory
).flow
}
override suspend fun insertBook(book: Book) {
dbBookRepository.insertBook(service.createBook(book.toBookRemote()).toBook())
}
override suspend fun updateBook(book: Book) {
service.updateBook(book.id, book.toBookRemote())
dbBookRepository.updateBook(book)
}
override suspend fun deleteBook(book: Book) {
service.deleteBook(book.id)
dbBookRepository.deleteBook(book)
}
}

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package com.example.myapplication.api.respositories
import com.example.myapplication.api.ServerService
import com.example.myapplication.api.model.toUser
import com.example.myapplication.api.model.toBook
import com.example.myapplication.api.model.toUserRemote
import com.example.myapplication.db.database.AppDatabase
import com.example.myapplication.db.model.Book
import com.example.myapplication.db.model.User
import com.example.myapplication.db.respository.OfflineUserRepository
import com.example.myapplication.db.respository.UserRepository
class RestUserRepository(
private val service: ServerService,
private val dbUserRepository: OfflineUserRepository,
private val database: AppDatabase
): UserRepository {
override suspend fun getAll(): List<User> {
return service.getUsers().map{x -> x.toUser()}
}
override suspend fun getByUid(uid: Int): User {
return service.getUser(uid).toUser()
}
override suspend fun getUserBooks(userid: Int): List<Book> {
return service.getByUser(userid).map{x -> x.toBook()}
}
override suspend fun tryLogin(login: String, password: String): User? {
return service.getUserByLoginPass(login, password).firstOrNull()?.toUser()
}
override suspend fun insert(user: User) {
dbUserRepository.insert(service.createUser(user.toUserRemote()).toUser())
}
override suspend fun update(user: User) {
service.updateUser(user.uid, user.toUserRemote())
dbUserRepository.update(user)
}
override suspend fun delete(user: User) {
service.deleteUser(user.uid)
dbUserRepository.delete(user)
}
}

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package com.example.myapplication.composeui
import androidx.lifecycle.ViewModelProvider
import androidx.lifecycle.createSavedStateHandle
import androidx.lifecycle.viewmodel.CreationExtras
import androidx.lifecycle.viewmodel.initializer
import androidx.lifecycle.viewmodel.viewModelFactory
import com.example.myapplication.MyApplication
import com.example.myapplication.composeui.ViewModel.AuthorBooksViewModel
import com.example.myapplication.composeui.ViewModel.AuthorDropDownViewModel
import com.example.myapplication.composeui.ViewModel.AuthorEditViewModel
import com.example.myapplication.composeui.ViewModel.AuthorListViewModel
import com.example.myapplication.composeui.ViewModel.BookEditViewModel
import com.example.myapplication.composeui.ViewModel.BookListViewModel
import com.example.myapplication.composeui.ViewModel.BookPageViewModel
import com.example.myapplication.composeui.ViewModel.LoginViewModel
import com.example.myapplication.composeui.ViewModel.SearchPageViewModel
import com.example.myapplication.composeui.ViewModel.UserBooksViewModel
import com.example.myapplication.composeui.ViewModel.UserEditViewModel
import com.example.myapplication.composeui.ViewModel.UserPageViewModel
import com.example.myapplication.composeui.authenticator.AuthenticatorViewModel
object AppViewModelProvider {
val Factory = viewModelFactory {
initializer {
UserPageViewModel(
this.createSavedStateHandle(),
myApplication().container.userRestRepository
)
}
initializer {
UserEditViewModel(
this.createSavedStateHandle(),
myApplication().container.userRestRepository
)
}
initializer {
SearchPageViewModel(
myApplication().container.bookRestRepository,
this.createSavedStateHandle()
)
}
initializer {
BookPageViewModel(
myApplication().container.bookRestRepository,
this.createSavedStateHandle()
)
}
initializer {
BookListViewModel(
myApplication().container.bookRestRepository
)
}
initializer {
BookEditViewModel(
this.createSavedStateHandle(),
myApplication().container.bookRestRepository
)
}
initializer {
AuthorListViewModel(
myApplication().container.authorRestRepository
)
}
initializer {
AuthorEditViewModel(
this.createSavedStateHandle(),
myApplication().container.authorRestRepository
)
}
initializer {
AuthorDropDownViewModel(
myApplication().container.authorRestRepository
)
}
initializer {
AuthorBooksViewModel(
this.createSavedStateHandle(),
myApplication().container.bookRestRepository
)
}
initializer {
UserBooksViewModel(myApplication().container.bookRestRepository)
}
initializer {
AuthenticatorViewModel(myApplication().container.userRestRepository)
}
initializer {
LoginViewModel(myApplication().container.userRestRepository)
}
}
}
fun CreationExtras.myApplication(): MyApplication =
(this[ViewModelProvider.AndroidViewModelFactory.APPLICATION_KEY] as MyApplication)

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package com.example.myapplication.composeui
import android.content.res.Configuration
import androidx.compose.foundation.lazy.grid.GridCells
import androidx.compose.foundation.lazy.grid.LazyVerticalGrid
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Surface
import androidx.compose.runtime.Composable
import androidx.compose.runtime.LaunchedEffect
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.dp
import androidx.lifecycle.viewmodel.compose.viewModel
import androidx.navigation.NavController
import androidx.navigation.compose.rememberNavController
import androidx.paging.compose.LazyPagingItems
import androidx.paging.compose.collectAsLazyPagingItems
import com.example.myapplication.composeui.ViewModel.AuthorBooksViewModel
import com.example.myapplication.db.model.Book
import com.example.myapplication.ui.theme.MyApplicationTheme
import kotlinx.coroutines.launch
@Composable
fun AuthorBooks(navController: NavController, authorId: Int, viewModel: AuthorBooksViewModel = viewModel(factory = AppViewModelProvider.Factory)) {
val coroutineScope = rememberCoroutineScope()
val authorBooksUiState = viewModel.authorBooksUiState
val pagingBook: LazyPagingItems<Book> = viewModel.bookPagedData.collectAsLazyPagingItems()
LaunchedEffect(Unit) {
viewModel.refreshState()
}
fun refresh(){
coroutineScope.launch { viewModel.refreshState() }
}
LazyVerticalGrid(columns = GridCells.Adaptive(minSize = 180.dp)){
items (pagingBook.itemCount){
index -> BookCell(navController = navController, book = pagingBook[index]!!.copy())
}
}
}
@Preview(name = "Light Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_NO)
@Preview(name = "Dark Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_YES)
@Composable
fun AuthorBooksPreview() {
MyApplicationTheme {
Surface(
color = MaterialTheme.colorScheme.background
) {
AuthorBooks(navController = rememberNavController(), 0)
}
}
}

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package com.example.myapplication.composeui
import android.util.Log
import android.widget.Toast
import androidx.compose.foundation.Image
import androidx.compose.foundation.border
import androidx.compose.foundation.clickable
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.PaddingValues
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.requiredSize
import androidx.compose.foundation.shape.RoundedCornerShape
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Create
import androidx.compose.material.icons.filled.Delete
import androidx.compose.material3.Button
import androidx.compose.material3.ButtonDefaults
import androidx.compose.material3.Icon
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.ui.Modifier
import androidx.compose.ui.draw.clip
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.graphics.asImageBitmap
import androidx.compose.ui.layout.ContentScale
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.res.stringResource
import androidx.compose.ui.unit.dp
import androidx.lifecycle.viewmodel.compose.viewModel
import androidx.navigation.NavController
import com.example.myapplication.MainActivity
import com.example.myapplication.R
import com.example.myapplication.composeui.ViewModel.AuthorListViewModel
import com.example.myapplication.composeui.navigation.Screen
import com.example.myapplication.db.database.AppDatabase
import com.example.myapplication.db.model.Author
import com.example.myapplication.store.LiveStore
import kotlinx.coroutines.flow.first
import kotlinx.coroutines.flow.firstOrNull
import kotlinx.coroutines.launch
import java.lang.Exception
@Composable
fun AuthorCell(navController: NavController?, author: Author, viewModel: AuthorListViewModel = viewModel(factory = AppViewModelProvider.Factory)){
val scope = rememberCoroutineScope()
val context = LocalContext.current
Column(modifier = Modifier
.padding(all = 5.dp)
.requiredSize(170.dp, 150.dp)
.clip(RoundedCornerShape(10.dp))
.border(1.dp, Color.LightGray, shape = RoundedCornerShape(10.dp))
) {
Text("${author.name}")
Row{
Button(
modifier = Modifier
.padding(all = 5.dp),
onClick = {
if(LiveStore.getRole() == "ADMIN") {
val route = Screen.AuthorEdit.route.replace("{id}", author.id.toString())
navController!!.navigate(route)
}
else{
val toast = Toast.makeText(MainActivity.appContext, "У вас нет соответствующих прав", Toast.LENGTH_SHORT)
toast.show()
}
},
) {
Icon(
imageVector = Icons.Default.Create,
contentDescription = "Изменить",
tint = Color.White
)
}
Button(
modifier = Modifier
.padding(all = 5.dp),
onClick = {
if(LiveStore.getRole() == "ADMIN") {
scope.launch {
viewModel.deleteAuthor(author)
}
}
else{
val toast = Toast.makeText(MainActivity.appContext, "У вас нет соответствующих прав", Toast.LENGTH_SHORT)
toast.show()
}
},
colors = ButtonDefaults.buttonColors(containerColor = Color.Red),
) {
Icon(
imageVector = Icons.Default.Delete,
contentDescription = "Удалить",
tint = Color.White
)
}
}
Button(
modifier = Modifier
.fillMaxWidth()
.padding(all = 10.dp),
onClick = {
navController?.navigate(Screen.AuthorBooks.route.replace("{id}", author.id.toString()))
}) {
Text(stringResource(id = R.string.books))
}
}
}

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package com.example.myapplication.composeui
import android.graphics.Bitmap
import androidx.compose.foundation.ScrollState
import androidx.compose.foundation.background
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.size
import androidx.compose.foundation.text.KeyboardOptions
import androidx.compose.foundation.verticalScroll
import androidx.compose.material3.Button
import androidx.compose.material3.DropdownMenu
import androidx.compose.material3.DropdownMenuItem
import androidx.compose.material3.ExperimentalMaterial3Api
import androidx.compose.material3.ExposedDropdownMenuBox
import androidx.compose.material3.ExposedDropdownMenuDefaults
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.OutlinedTextField
import androidx.compose.material3.Text
import androidx.compose.material3.TextField
import androidx.compose.runtime.Composable
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.runtime.setValue
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.res.stringResource
import androidx.compose.ui.unit.dp
import androidx.lifecycle.viewmodel.compose.viewModel
import androidx.navigation.NavController
import com.example.myapplication.R
import com.example.myapplication.composeui.ViewModel.AuthorsListUiState
import com.example.myapplication.composeui.ViewModel.AuthorsUiState
import com.example.myapplication.composeui.ViewModel.AuthorDetails
import com.example.myapplication.composeui.ViewModel.AuthorEditViewModel
import com.example.myapplication.composeui.ViewModel.AuthorUiState
import com.example.myapplication.composeui.ViewModel.ImageUploader
import com.example.myapplication.db.model.Author
import kotlinx.coroutines.launch
@Composable
fun AuthorEdit(navController: NavController, viewModel: AuthorEditViewModel = viewModel(factory = AppViewModelProvider.Factory)){
val coroutineScope = rememberCoroutineScope()
AuthorEdit(
authorUiState = viewModel.authorUiState,
onClick = {
coroutineScope.launch {
viewModel.saveAuthor()
navController.popBackStack()
}
},
onUpdate = viewModel::updateUiState,
)
}
@OptIn(ExperimentalMaterial3Api::class)
@Composable
private fun AuthorEdit(
authorUiState: AuthorUiState,
onClick: () -> Unit,
onUpdate: (AuthorDetails) -> Unit,
) {
Column(
Modifier
.fillMaxWidth()
.padding(all = 10.dp)
.verticalScroll(ScrollState(1))
) {
Spacer(modifier = Modifier.size(10.dp))
OutlinedTextField(
modifier = Modifier.fillMaxWidth(),
value = authorUiState.authorDetails.name,
onValueChange = { onUpdate(authorUiState.authorDetails.copy(name = it)) },
label = { Text("Имя автора") },
singleLine = true
)
Button(
onClick = onClick,
enabled = authorUiState.isEntryValid,
modifier = Modifier.fillMaxWidth()
) {
Text(text = "Сохранить")
}
}
}

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package com.example.myapplication.composeui
import android.widget.Toast
import androidx.compose.foundation.Image
import androidx.compose.foundation.border
import androidx.compose.foundation.clickable
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.PaddingValues
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.requiredSize
import androidx.compose.foundation.shape.RoundedCornerShape
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Create
import androidx.compose.material.icons.filled.Delete
import androidx.compose.material3.Button
import androidx.compose.material3.ButtonDefaults
import androidx.compose.material3.Icon
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.ui.Modifier
import androidx.compose.ui.draw.clip
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.graphics.asImageBitmap
import androidx.compose.ui.layout.ContentScale
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.sp
import androidx.lifecycle.viewmodel.compose.viewModel
import androidx.navigation.NavController
import com.example.myapplication.MainActivity
import com.example.myapplication.composeui.ViewModel.BookListViewModel
import com.example.myapplication.composeui.navigation.Screen
import com.example.myapplication.db.model.Book
import com.example.myapplication.store.LiveStore
import kotlinx.coroutines.launch
@Composable
fun BookCell(navController: NavController?, book: Book, viewModel: BookListViewModel = viewModel(factory = AppViewModelProvider.Factory)){
val scope = rememberCoroutineScope()
Column(modifier = Modifier
.padding(all = 5.dp)
.requiredSize(170.dp, 300.dp)
.clip(RoundedCornerShape(10.dp))
.border(1.dp, Color.LightGray, shape = RoundedCornerShape(10.dp))
.clickable(onClick = {
navController?.navigate(
Screen.BookView.route.replace(
"{id}",
book.id.toString()
)
)
})
) {
Button(modifier = Modifier
.fillMaxWidth(),
shape = RoundedCornerShape(0.dp),
contentPadding = PaddingValues(0.dp),
onClick = {
navController?.navigate(
Screen.BookView.route.replace(
"{id}",
book.id.toString()
)
)
}) {
Image(
bitmap = book.cover!!.asImageBitmap(),
contentDescription = book.title,
contentScale = ContentScale.Crop,
modifier = Modifier
.requiredSize(170.dp)
.clip(RoundedCornerShape(0.dp))
)
}
Column(modifier = Modifier.padding(all=5.dp)) {
Text("${book.title}")
Row{
Button(
modifier = Modifier
.padding(all = 5.dp),
onClick = {
if((LiveStore.getUserId() == book.userId) || (LiveStore.getRole() == "ADMIN")) {
val route = Screen.BookEdit.route.replace("{id}", book.id.toString())
navController!!.navigate(route)
}
else{
val toast = Toast.makeText(MainActivity.appContext, "У вас нет соответствующих прав", Toast.LENGTH_SHORT)
toast.show()
}
},
) {
Icon(
imageVector = Icons.Default.Create,
contentDescription = "Изменить",
tint = Color.White
)
}
Button(
modifier = Modifier
.padding(all = 5.dp),
onClick = {
if((LiveStore.getUserId() == book.userId) || (LiveStore.getRole() == "ADMIN")) {
scope.launch {
viewModel.deleteBook(book)
}
}
else{
val toast = Toast.makeText(MainActivity.appContext, "У вас нет соответствующих прав", Toast.LENGTH_SHORT)
toast.show()
}
},
colors = ButtonDefaults.buttonColors(containerColor = Color.Red),
) {
Icon(
imageVector = Icons.Default.Delete,
contentDescription = "Удалить",
tint = Color.White
)
}
}
}
}
}

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package com.example.myapplication.composeui
import android.graphics.Bitmap
import androidx.compose.foundation.ScrollState
import androidx.compose.foundation.background
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.size
import androidx.compose.foundation.verticalScroll
import androidx.compose.material3.Button
import androidx.compose.material3.DropdownMenu
import androidx.compose.material3.DropdownMenuItem
import androidx.compose.material3.ExperimentalMaterial3Api
import androidx.compose.material3.ExposedDropdownMenuBox
import androidx.compose.material3.OutlinedTextField
import androidx.compose.material3.Text
import androidx.compose.material3.TextField
import androidx.compose.runtime.Composable
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.runtime.setValue
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.res.stringResource
import androidx.compose.ui.unit.dp
import androidx.lifecycle.viewmodel.compose.viewModel
import androidx.navigation.NavController
import com.example.myapplication.R
import com.example.myapplication.composeui.ViewModel.AuthorDropDownViewModel
import com.example.myapplication.composeui.ViewModel.AuthorsListUiState
import com.example.myapplication.composeui.ViewModel.AuthorsUiState
import com.example.myapplication.composeui.ViewModel.BookDetails
import com.example.myapplication.composeui.ViewModel.BookEditViewModel
import com.example.myapplication.composeui.ViewModel.BookUiState
import com.example.myapplication.composeui.ViewModel.ImageUploader
import com.example.myapplication.db.model.Author
import com.example.myapplication.store.LiveStore
import kotlinx.coroutines.launch
@Composable
fun BookEdit(navController: NavController, viewModel: BookEditViewModel = viewModel(factory = AppViewModelProvider.Factory), authorViewModel: AuthorDropDownViewModel = viewModel(factory = AppViewModelProvider.Factory)){
val coroutineScope = rememberCoroutineScope()
authorViewModel.setCurrentAuthor(viewModel.bookUiState.bookDetails.authorId)
BookEdit(
bookUiState = viewModel.bookUiState,
authorUiState = authorViewModel.authorsUiState,
onClick = {
coroutineScope.launch {
viewModel.saveBook()
navController.popBackStack()
}
},
authorsListUiState = authorViewModel.authorsListUiState,
onUpdate = viewModel::updateUiState,
onAuthorUpdate = authorViewModel::updateUiState
)
}
@OptIn(ExperimentalMaterial3Api::class)
@Composable
private fun AuthorDropDown(
authorUiState: AuthorsUiState,
authorsListUiState: AuthorsListUiState,
onAuthorUpdate: (Author) -> Unit
) {
var expanded: Boolean by remember { mutableStateOf(false) }
ExposedDropdownMenuBox(
modifier = Modifier
.padding(top = 7.dp),
expanded = expanded,
onExpandedChange = {
expanded = !expanded
}
) {
TextField(
value =authorUiState.author?.name ?: stringResource(id = R.string.author_name),
onValueChange = {},
readOnly = true,
modifier = Modifier
.fillMaxWidth()
.menuAnchor()
)
DropdownMenu(
expanded = expanded,
onDismissRequest = { expanded = false },
modifier = Modifier
.background(Color.White)
.exposedDropdownSize()
) {
authorsListUiState.authorList.forEach { author ->
DropdownMenuItem(
text = {
Text(text = author.name)
},
onClick = {
onAuthorUpdate(author)
expanded = false
}
)
}
}
}
}
@OptIn(ExperimentalMaterial3Api::class)
@Composable
private fun BookEdit(
bookUiState: BookUiState,
authorUiState: AuthorsUiState,
authorsListUiState: AuthorsListUiState,
onClick: () -> Unit,
onUpdate: (BookDetails) -> Unit,
onAuthorUpdate: (Author) -> Unit
) {
fun handleImageUpload(bitmap: Bitmap) {
onUpdate(
bookUiState.bookDetails.copy(
cover = bitmap
)
)
}
onUpdate(bookUiState.bookDetails.copy(userId = LiveStore.getUserId()))
Column(
Modifier
.fillMaxWidth()
.padding(all = 10.dp)
.verticalScroll(ScrollState(1))
) {
Spacer(modifier = Modifier.size(10.dp))
OutlinedTextField(
modifier = Modifier.fillMaxWidth(),
value = bookUiState.bookDetails.title,
onValueChange = { onUpdate(bookUiState.bookDetails.copy(title = it)) },
label = { Text("Название книги") },
singleLine = true
)
AuthorDropDown(
authorUiState = authorUiState,
authorsListUiState = authorsListUiState,
onAuthorUpdate = {
onUpdate(bookUiState.bookDetails.copy(authorId = it.id))
onAuthorUpdate(it)
}
)
OutlinedTextField(
modifier = Modifier.fillMaxWidth(),
value = bookUiState.bookDetails.description,
onValueChange = { onUpdate(bookUiState.bookDetails.copy(description = it)) },
label = { Text("Описание") },
)
ImageUploader(bitmap = bookUiState.bookDetails.cover, onResult = { bitmap: Bitmap -> handleImageUpload(bitmap)} )
OutlinedTextField(
modifier = Modifier.fillMaxWidth(),
value = bookUiState.bookDetails.content,
onValueChange = { onUpdate(bookUiState.bookDetails.copy(content = it)) },
label = { Text("Содержание") },
)
Button(
onClick = onClick,
enabled = bookUiState.isEntryValid,
modifier = Modifier.fillMaxWidth()
) {
Text(text = "Сохранить")
}
}
}

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package com.example.myapplication.composeui
import android.content.res.Configuration
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Surface
import androidx.compose.runtime.Composable
import androidx.compose.runtime.LaunchedEffect
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Modifier
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.unit.dp
import androidx.compose.material3.Text
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.sp
import androidx.lifecycle.viewmodel.compose.viewModel
import androidx.navigation.NavController
import com.example.myapplication.composeui.ViewModel.BookPageViewModel
import com.example.myapplication.db.database.AppDatabase
import com.example.myapplication.db.model.BookWithAuthor
import com.example.myapplication.ui.theme.MyApplicationTheme
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.withContext
@Composable
fun BookRead(id: Int, viewModel: BookPageViewModel = viewModel(factory = AppViewModelProvider.Factory)) {
val scope = rememberCoroutineScope()
val book = viewModel.bookPageUiState
LaunchedEffect(Unit) {
withContext(Dispatchers.IO) {
viewModel.refreshState()
}
}
Column(
Modifier
.fillMaxWidth()
.padding(all = 10.dp)
){
Text(text = book?.book?.content ?: "", fontSize=22.sp)
}
}
@Preview(name = "Light Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_NO)
@Preview(name = "Dark Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_YES)
@Composable
fun BookReadPreview() {
MyApplicationTheme {
Surface(
color = MaterialTheme.colorScheme.background
) {
BookRead(id = 0)
}
}
}

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package com.example.myapplication.composeui
import android.content.res.Configuration
import androidx.compose.foundation.Image
import androidx.compose.foundation.clickable
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.height
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.lazy.grid.GridCells
import androidx.compose.foundation.lazy.grid.LazyVerticalGrid
import androidx.compose.foundation.lazy.grid.items
import androidx.compose.material3.Button
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Surface
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.LaunchedEffect
import androidx.compose.runtime.key
import androidx.compose.runtime.mutableStateListOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.ui.Modifier
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.res.painterResource
import androidx.compose.ui.res.stringResource
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.dp
import androidx.lifecycle.viewmodel.compose.viewModel
import androidx.navigation.NavController
import androidx.navigation.compose.rememberNavController
import androidx.paging.compose.LazyPagingItems
import androidx.paging.compose.collectAsLazyPagingItems
import com.example.myapplication.R
import com.example.myapplication.composeui.ViewModel.SearchPageViewModel
import com.example.myapplication.composeui.navigation.Screen
import com.example.myapplication.db.database.AppDatabase
import com.example.myapplication.db.model.Book
import com.example.myapplication.ui.theme.MyApplicationTheme
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.launch
import kotlinx.coroutines.withContext
@Composable
fun BookSearch(navController: NavController, searchStr: String, viewModel: SearchPageViewModel = viewModel(factory = AppViewModelProvider.Factory)) {
val coroutineScope = rememberCoroutineScope()
val searchPageUiState = viewModel.searchPageUiState
val pagingBook: LazyPagingItems<Book> = viewModel.bookPagedData.collectAsLazyPagingItems()
LaunchedEffect(Unit) {
viewModel.refreshState()
}
fun refresh(){
coroutineScope.launch { viewModel.refreshState() }
}
LazyVerticalGrid(columns = GridCells.Adaptive(minSize = 180.dp)){
items (pagingBook.itemCount){
index -> BookCell(navController = navController, book = pagingBook[index]!!.copy())
}
}
}
@Preview(name = "Light Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_NO)
@Preview(name = "Dark Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_YES)
@Composable
fun BookSearchPreview() {
MyApplicationTheme {
Surface(
color = MaterialTheme.colorScheme.background
) {
BookSearch(navController = rememberNavController(), "")
}
}
}

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package com.example.myapplication.composeui
import android.content.Context
import android.content.res.Configuration
import android.graphics.Bitmap
import android.graphics.BitmapFactory
import androidx.compose.foundation.Image
import androidx.compose.material3.Button
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.material3.Surface
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.requiredSize
import androidx.compose.foundation.rememberScrollState
import androidx.compose.foundation.verticalScroll
import androidx.compose.material3.ExperimentalMaterial3Api
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.OutlinedTextField
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.LaunchedEffect
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.asImageBitmap
import androidx.compose.ui.layout.ContentScale
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.res.stringResource
import androidx.compose.ui.unit.dp
import androidx.lifecycle.viewmodel.compose.viewModel
import androidx.navigation.NavController
import androidx.navigation.compose.rememberNavController
import com.example.myapplication.R
import com.example.myapplication.composeui.ViewModel.BookPageViewModel
import com.example.myapplication.composeui.navigation.Screen
import com.example.myapplication.ui.theme.MyApplicationTheme
private fun getBookImage(context: Context, imageId: String): Bitmap {
val inputStream = context.assets.open("${imageId}.jpg")
val bitmap = BitmapFactory.decodeStream(inputStream)
return bitmap
}
@OptIn(ExperimentalMaterial3Api::class)
@Composable
fun BookView(navController: NavController, id: Int, viewModel: BookPageViewModel = viewModel(factory = AppViewModelProvider.Factory)) {
val scope = rememberCoroutineScope()
val book = viewModel.bookPageUiState
val context = LocalContext.current
Column(
Modifier
.fillMaxWidth()
.padding(all = 10.dp)
.verticalScroll(rememberScrollState())
) {
Image(
bitmap = book.book?.cover?.asImageBitmap() ?: getBookImage(context, "img").asImageBitmap(),
contentDescription = book.book?.title,
contentScale = ContentScale.FillBounds,
modifier = Modifier
.fillMaxSize()
.requiredSize(400.dp, 400.dp)
.padding(0.dp, 10.dp)
)
Column(
Modifier
.fillMaxWidth()
.padding(all = 10.dp)
) {
OutlinedTextField(modifier = Modifier.fillMaxWidth(),
value = book.book?.title ?: "", onValueChange = {}, readOnly = true,
label = {
Text(stringResource(id = R.string.book_title))
}
)
OutlinedTextField(modifier = Modifier.fillMaxWidth(),
value = book.book?.description ?: "", onValueChange = {}, readOnly = true,
label = {
Text(stringResource(id = R.string.description))
}
)
Button(
modifier = Modifier
.fillMaxWidth()
.padding(all = 10.dp),
onClick = { navController?.navigate(Screen.BookRead.route.replace("{id}", id.toString())) }) {
Text(stringResource(id = R.string.read_book))
}
}
}
}
@Preview(name = "Light Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_NO)
@Preview(name = "Dark Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_YES)
@Composable
fun BookViewPreview() {
MyApplicationTheme {
Surface(
color = MaterialTheme.colorScheme.background
) {
BookView(navController = rememberNavController(), id = 0)
}
}
}

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package com.example.myapplication.composeui
import android.content.res.Configuration
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.material3.Button
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Surface
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.ui.Modifier
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.dp
import androidx.navigation.NavController
import androidx.compose.foundation.lazy.grid.GridCells
import androidx.compose.foundation.lazy.grid.LazyVerticalGrid
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Add
import androidx.compose.material3.ButtonDefaults
import androidx.compose.material3.Icon
import androidx.compose.runtime.rememberCoroutineScope
import androidx.lifecycle.viewmodel.compose.viewModel
import androidx.navigation.compose.rememberNavController
import androidx.paging.compose.LazyPagingItems
import androidx.paging.compose.collectAsLazyPagingItems
import com.example.myapplication.composeui.ViewModel.BookListViewModel
import com.example.myapplication.composeui.navigation.Screen
import com.example.myapplication.db.model.Book
import com.example.myapplication.ui.theme.MyApplicationTheme
@Composable
fun Catalog(navController: NavController, viewModel: BookListViewModel = viewModel(factory = AppViewModelProvider.Factory)){
val coroutineScope = rememberCoroutineScope()
val bookListUiState = viewModel.bookListUiState
val pagingBook: LazyPagingItems<Book> = viewModel.bookPagedData.collectAsLazyPagingItems()
Column() {
Button(
modifier = Modifier
.fillMaxWidth()
.padding(all = 10.dp),
onClick = {
val route = Screen.BookEdit.route.replace("{id}", 0.toString())
navController.navigate(route)
}
) {
Icon(
imageVector = Icons.Default.Add,
contentDescription = "Добавить",
)
Text("Добавить")
}
LazyVerticalGrid(columns = GridCells.Adaptive(minSize = 180.dp)) {
items(pagingBook.itemCount) { index ->
BookCell(navController = navController, book = pagingBook[index]!!.copy())
}
}
}
}
@Preview(name = "Light Mode", uiMode = Configuration.UI_MODE_NIGHT_NO)
@Preview(name = "Dark Mode", uiMode = Configuration.UI_MODE_NIGHT_YES)
@Composable
private fun CatalogPreview(){
MyApplicationTheme{
Surface(
color = MaterialTheme.colorScheme.background
) {
Main(navController = rememberNavController())
}
}
}

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package com.example.myapplication.composeui
import android.content.res.Configuration
import android.widget.Toast
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.text.KeyboardOptions
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Check
import androidx.compose.material.icons.filled.Close
import androidx.compose.material3.Button
import androidx.compose.material3.ExperimentalMaterial3Api
import androidx.compose.material3.Icon
import androidx.compose.material3.IconButton
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.OutlinedTextField
import androidx.compose.material3.Surface
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.ui.Modifier
import androidx.compose.ui.res.stringResource
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.dp
import androidx.navigation.NavController
import com.example.myapplication.R
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.setValue
import androidx.compose.runtime.getValue
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.runtime.saveable.rememberSaveable
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.text.input.KeyboardType
import androidx.compose.ui.text.input.PasswordVisualTransformation
import androidx.compose.ui.text.input.VisualTransformation
import androidx.lifecycle.viewmodel.compose.viewModel
import androidx.navigation.compose.rememberNavController
import com.example.myapplication.MainActivity
import com.example.myapplication.composeui.ViewModel.LoginViewModel
import com.example.myapplication.composeui.navigation.Screen
import com.example.myapplication.store.PreferencesStore
import com.example.myapplication.ui.theme.MyApplicationTheme
import kotlinx.coroutines.launch
@OptIn(ExperimentalMaterial3Api::class)
@Composable
fun Enter(navController: NavController, viewModel: LoginViewModel = viewModel(factory = AppViewModelProvider.Factory)) {
val scope = rememberCoroutineScope()
val context = LocalContext.current
val user = viewModel.signInUserState
Column(
Modifier
.fillMaxWidth()
.padding(all = 40.dp)) {
Text(stringResource(id = R.string.login))
OutlinedTextField(modifier = Modifier.fillMaxWidth(),
value = user.details.login, onValueChange = { viewModel.updateState(user.details.copy(login = it)) },
)
Spacer(Modifier.padding(bottom = 10.dp))
Text(stringResource(id = R.string.password))
var passwordVisible by rememberSaveable { mutableStateOf(false) }
OutlinedTextField(modifier = Modifier.fillMaxWidth(),
value = user.details.password, onValueChange = { viewModel.updateState(user.details.copy(password = it)) },
visualTransformation = if (passwordVisible) VisualTransformation.None else PasswordVisualTransformation(),
keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Password),
trailingIcon = {
val image = if (passwordVisible)
Icons.Filled.Close
else Icons.Filled.Check
val description = if (passwordVisible) "Hide password" else "Show password"
IconButton(onClick = { passwordVisible = !passwordVisible }) {
Icon(imageVector = image, description)
}
}
)
Spacer(Modifier.padding(bottom = 20.dp))
Button(
modifier = Modifier
.fillMaxWidth()
.padding(all = 10.dp),
onClick = {
scope.launch {
if(viewModel.signIn(context) != null) {
navController?.navigate(Screen.Profile.route)
}
else{
val toast = Toast.makeText(MainActivity.appContext, "Неверный логин или пароль", Toast.LENGTH_SHORT)
toast.show()
}
}
}) {
Text(stringResource(id = R.string.enter))
}
}
}
@Preview(name = "Light Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_NO)
@Preview(name = "Dark Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_YES)
@Composable
fun EnterPreview() {
MyApplicationTheme {
Surface(
color = MaterialTheme.colorScheme.background
) {
Enter(navController = rememberNavController())
}
}
}

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package com.example.myapplication.composeui
import android.content.res.Configuration
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.lazy.grid.GridCells
import androidx.compose.foundation.lazy.grid.LazyVerticalGrid
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Add
import androidx.compose.material3.Button
import androidx.compose.material3.Icon
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Surface
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.ui.Modifier
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.dp
import androidx.lifecycle.viewmodel.compose.viewModel
import androidx.navigation.NavController
import androidx.navigation.compose.rememberNavController
import androidx.paging.compose.LazyPagingItems
import androidx.paging.compose.collectAsLazyPagingItems
import com.example.myapplication.composeui.ViewModel.AuthorListViewModel
import com.example.myapplication.composeui.navigation.Screen
import com.example.myapplication.db.model.Author
import com.example.myapplication.ui.theme.MyApplicationTheme
@Composable
fun ListAuthors(navController: NavController, viewModel: AuthorListViewModel = viewModel(factory = AppViewModelProvider.Factory)){
val coroutineScope = rememberCoroutineScope()
val authorListUiState = viewModel.authorListUiState
val pagingAuthor: LazyPagingItems<Author> = viewModel.authorPagedData.collectAsLazyPagingItems()
Column() {
Button(
modifier = Modifier
.fillMaxWidth()
.padding(all = 10.dp),
onClick = {
val route = Screen.AuthorEdit.route.replace("{id}", 0.toString())
navController.navigate(route)
}
) {
Icon(
imageVector = Icons.Default.Add,
contentDescription = "Добавить",
)
Text("Добавить")
}
LazyVerticalGrid(columns = GridCells.Adaptive(minSize = 180.dp)) {
items(pagingAuthor.itemCount) { index ->
AuthorCell(navController = navController, author = pagingAuthor[index]!!.copy())
}
}
}
}
@Preview(name = "Light Mode", uiMode = Configuration.UI_MODE_NIGHT_NO)
@Preview(name = "Dark Mode", uiMode = Configuration.UI_MODE_NIGHT_YES)
@Composable
private fun ListAuthorsPreview(){
MyApplicationTheme{
Surface(
color = MaterialTheme.colorScheme.background
) {
Main(navController = rememberNavController())
}
}
}

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package com.example.myapplication.composeui
import android.content.res.Configuration
import androidx.compose.foundation.Image
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.fillMaxHeight
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.width
import androidx.compose.material3.Button
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Surface
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.ui.Modifier
import androidx.compose.ui.res.stringResource
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.dp
import androidx.navigation.NavController
import com.example.myapplication.composeui.navigation.Screen
import com.example.myapplication.ui.theme.MyApplicationTheme
import androidx.compose.ui.text.style.TextAlign
import androidx.compose.ui.res.painterResource
import androidx.compose.ui.unit.sp
import com.example.myapplication.R
import androidx.compose.ui.layout.ContentScale
import androidx.navigation.compose.rememberNavController
@Composable
fun Main(navController: NavController) {
Column(Modifier.padding(all = 40.dp)) {
Text(stringResource(id = R.string.welcome), modifier = Modifier.fillMaxWidth(), fontSize = 24.sp, textAlign = TextAlign.Center)
Spacer(Modifier.padding(bottom = 20.dp))
Image(
painter = painterResource(id = R.drawable.logo),
contentDescription = "logo",
contentScale = ContentScale.FillWidth,
modifier = Modifier.fillMaxWidth(),
)
Spacer(Modifier.padding(bottom = 20.dp))
Button(
modifier = Modifier
.fillMaxWidth()
.padding(all = 10.dp),
onClick = { navController?.navigate(Screen.Enter.route) }) {
Text(stringResource(id = R.string.enter))
}
Spacer(Modifier.padding(bottom = 20.dp))
Button(
modifier = Modifier
.fillMaxWidth()
.padding(all = 10.dp),
onClick = { navController?.navigate(Screen.Registration.route) }) {
Text(stringResource(id = R.string.create_acc))
}
}
}
@Preview(name = "Light Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_NO)
@Preview(name = "Dark Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_YES)
@Composable
fun MainPreview() {
MyApplicationTheme {
Surface(
color = MaterialTheme.colorScheme.background
) {
Main(navController = rememberNavController())
}
}
}

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package com.example.myapplication.composeui
import android.content.res.Configuration
import androidx.compose.foundation.Image
import androidx.compose.foundation.clickable
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.material3.Button
import androidx.compose.material3.ButtonDefaults
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Surface
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.layout.ContentScale
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.res.painterResource
import androidx.compose.ui.res.stringResource
import androidx.compose.ui.text.style.TextAlign
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.dp
import androidx.navigation.NavController
import androidx.navigation.compose.rememberNavController
import com.example.myapplication.composeui.navigation.Screen
import com.example.myapplication.R
import com.example.myapplication.store.LiveStore
import com.example.myapplication.store.PreferencesStore
import com.example.myapplication.ui.theme.MyApplicationTheme
import kotlinx.coroutines.launch
@Composable
fun Profile(navController: NavController) {
val scope = rememberCoroutineScope()
val context = LocalContext.current
val store = PreferencesStore(context)
Column(Modifier.padding(all = 40.dp)) {
Image(
painter = painterResource(id = R.drawable.user),
contentDescription = "logo",
contentScale = ContentScale.FillWidth,
modifier = Modifier.fillMaxWidth()
.clickable(
enabled = true,
onClick = {
navController?.navigate(Screen.ProfileEdit.route.replace("{id}", LiveStore.getUserId().toString()))
}
)
)
Spacer (Modifier.padding(bottom = 10.dp))
Text("Открыть профиль", modifier = Modifier.fillMaxWidth(), textAlign = TextAlign.Center)
Spacer(Modifier.padding(bottom = 20.dp))
Button(
modifier = Modifier
.fillMaxWidth()
.padding(all = 10.dp),
onClick = {
navController?.navigate(Screen.UserBooks.route.replace("{id}", LiveStore.getUserId().toString()))
}) {
Text(stringResource(id = R.string.my_books))
}
Spacer(Modifier.padding(bottom = 10.dp))
Button(
onClick = {
scope.launch {
store.setUid("")
}
navController?.navigate(Screen.Main.route)
},
modifier = Modifier
.fillMaxWidth()
.padding(all = 10.dp),
colors = ButtonDefaults.buttonColors(containerColor = Color.LightGray, contentColor = Color.Black))
{
Text(stringResource(id = R.string.exit))
}
}
}
@Preview(name = "Light Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_NO)
@Preview(name = "Dark Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_YES)
@Composable
fun ProfilePreview() {
MyApplicationTheme {
Surface(
color = MaterialTheme.colorScheme.background
) {
Profile(navController = rememberNavController())
}
}
}

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package com.example.myapplication.composeui
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.lazy.LazyColumn
import androidx.compose.material3.Button
import androidx.compose.material3.ButtonDefaults
import androidx.compose.material3.ExperimentalMaterial3Api
import androidx.compose.material3.OutlinedTextField
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.res.stringResource
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.sp
import androidx.lifecycle.viewmodel.compose.viewModel
import androidx.navigation.NavController
import com.example.myapplication.R
import com.example.myapplication.composeui.ViewModel.UserDetails
import com.example.myapplication.composeui.ViewModel.UserEditViewModel
import com.example.myapplication.composeui.ViewModel.UserUiState
import kotlinx.coroutines.launch
@Composable
fun ProfileEdit(navController: NavController, viewModel: UserEditViewModel = viewModel(factory = AppViewModelProvider.Factory)){
val scope = rememberCoroutineScope()
viewModel.userUiState.userDetails.login.isBlank()
ProfileEdit(
navController = navController,
userUiState = viewModel.userUiState,
onClick = {
scope.launch {
viewModel.saveUser()
navController.popBackStack()
}
},
onUpdate = viewModel::updateUiState
)
}
@OptIn(ExperimentalMaterial3Api::class)
@Composable
private fun ProfileEdit(
navController: NavController,
userUiState: UserUiState,
onClick: () -> Unit,
onUpdate: (UserDetails) -> Unit
){
LazyColumn() {
item {
OutlinedTextField(
value = userUiState.userDetails.email,
onValueChange = { onUpdate(userUiState.userDetails.copy(email = it)) },
singleLine = true,
label = { Text(stringResource(id = R.string.email), fontSize = 20.sp) },
modifier = Modifier
.fillMaxWidth()
.padding(10.dp, 5.dp)
)
OutlinedTextField(
value = userUiState.userDetails.login,
onValueChange = { onUpdate(userUiState.userDetails.copy(login = it)) },
label = { Text(stringResource(id = R.string.login), fontSize = 20.sp) },
modifier = Modifier
.fillMaxWidth()
.padding(10.dp, 5.dp)
)
OutlinedTextField(
value = userUiState.userDetails.password,
onValueChange = { onUpdate(userUiState.userDetails.copy(password = it)) },
singleLine = true,
label = { Text(stringResource(id = R.string.password), fontSize = 20.sp) },
modifier = Modifier
.fillMaxWidth()
.padding(10.dp, 5.dp)
)
Button(
onClick = onClick,
enabled = userUiState.isEntryValid,
modifier = Modifier.fillMaxWidth()
.padding(10.dp, 0.dp),
) {
Text("Изменить")
}
Button(
onClick = { navController.popBackStack() },
modifier = Modifier
.fillMaxWidth()
.padding(10.dp, 0.dp),
colors = ButtonDefaults.buttonColors(containerColor = Color.LightGray, contentColor = Color.Black))
{
Text(stringResource(id = R.string.back))
}
}
}
}

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package com.example.myapplication.composeui
import android.content.res.Configuration
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.text.KeyboardOptions
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Check
import androidx.compose.material.icons.filled.Close
import androidx.compose.material3.ExperimentalMaterial3Api
import androidx.compose.material3.Button
import androidx.compose.material3.Icon
import androidx.compose.material3.IconButton
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.OutlinedTextField
import androidx.compose.material3.Surface
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.ui.Modifier
import androidx.compose.ui.res.stringResource
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.dp
import androidx.navigation.NavController
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.setValue
import androidx.compose.runtime.getValue
import androidx.compose.runtime.remember
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.runtime.saveable.rememberSaveable
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.text.input.KeyboardType
import androidx.compose.ui.text.input.PasswordVisualTransformation
import androidx.compose.ui.text.input.VisualTransformation
import androidx.lifecycle.viewmodel.compose.viewModel
import androidx.navigation.compose.rememberNavController
import com.example.myapplication.composeui.navigation.Screen
import com.example.myapplication.ui.theme.MyApplicationTheme
import com.example.myapplication.R
import com.example.myapplication.composeui.ViewModel.UserDetails
import com.example.myapplication.composeui.ViewModel.UserEditViewModel
import com.example.myapplication.composeui.ViewModel.UserUiState
import com.example.myapplication.store.LiveStore
import kotlinx.coroutines.launch
@Composable
fun Registration(navController: NavController, viewModel: UserEditViewModel = viewModel(factory = AppViewModelProvider.Factory)){
val scope = rememberCoroutineScope()
Registration(
navController = navController,
userUiState = viewModel.userUiState,
onClick = {
scope.launch {
viewModel.saveUser()
navController?.navigate(Screen.Enter.route)
}
},
onUpdate = viewModel::updateUiState
)
}
@OptIn(ExperimentalMaterial3Api::class)
@Composable
private fun Registration(
navController: NavController,
userUiState: UserUiState,
onClick: () -> Unit,
onUpdate: (UserDetails) -> Unit
) {
onUpdate(userUiState.userDetails.copy(role = "USER"))
Column(Modifier.fillMaxWidth().padding(all = 40.dp)) {
Text(stringResource(id = R.string.email))
OutlinedTextField(modifier = Modifier.fillMaxWidth(),
value = userUiState.userDetails.email, onValueChange = { onUpdate(userUiState.userDetails.copy(email = it)) },
)
Spacer(Modifier.padding(bottom = 10.dp))
Text(stringResource(id = R.string.login))
OutlinedTextField(modifier = Modifier.fillMaxWidth(),
value = userUiState.userDetails.login, onValueChange = { onUpdate(userUiState.userDetails.copy(login = it)) },
)
Spacer(Modifier.padding(bottom = 10.dp))
var passwordVisible by rememberSaveable { mutableStateOf(false) }
Text(stringResource(id = R.string.password))
OutlinedTextField(modifier = Modifier.fillMaxWidth(),
value = userUiState.userDetails.password, onValueChange = { onUpdate(userUiState.userDetails.copy(password = it)) },
visualTransformation = if (passwordVisible) VisualTransformation.None else PasswordVisualTransformation(),
keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Password),
trailingIcon = {
val image = if (passwordVisible)
Icons.Filled.Close
else Icons.Filled.Check
val description = if (passwordVisible) "Hide password" else "Show password"
IconButton(onClick = { passwordVisible = !passwordVisible }) {
Icon(imageVector = image, description)
}
}
)
Spacer(Modifier.padding(bottom = 20.dp))
Button(
modifier = Modifier
.fillMaxWidth()
.padding(all = 10.dp),
onClick = onClick
) {
Text(stringResource(id = R.string.create_acc))
}
}
}
@Preview(name = "Light Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_NO)
@Preview(name = "Dark Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_YES)
@Composable
fun RegistrationPreview() {
MyApplicationTheme {
Surface(
color = MaterialTheme.colorScheme.background
) {
Registration(navController = rememberNavController())
}
}
}

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package com.example.myapplication.composeui
import android.content.res.Configuration
import androidx.compose.foundation.background
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.material3.Button
import androidx.compose.material3.ExperimentalMaterial3Api
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Surface
import androidx.compose.material3.Text
import androidx.compose.material3.TextField
import androidx.compose.material3.TextFieldDefaults
import androidx.compose.runtime.Composable
import androidx.compose.runtime.setValue
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Modifier
import androidx.compose.ui.res.stringResource
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.dp
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.res.colorResource
import androidx.compose.ui.unit.sp
import androidx.navigation.NavController
import androidx.navigation.compose.rememberNavController
import com.example.myapplication.composeui.navigation.Screen
import com.example.myapplication.R
import com.example.myapplication.ui.theme.MyApplicationTheme
@OptIn(ExperimentalMaterial3Api::class)
@Composable
fun Search(navController: NavController?) {
var searchStr by remember { mutableStateOf("") }
Column(
Modifier
.fillMaxWidth()
.padding(all = 40.dp)) {
Column(
Modifier
.background(color = colorResource(R.color.green_200))
.padding(all = 20.dp)) {
Text(stringResource(id = R.string.welcome), color = Color.White)
Text(stringResource(id = R.string.book_world), color = Color.White)
}
Spacer(Modifier.padding(bottom = 20.dp))
TextField(modifier = Modifier.fillMaxWidth(),
value = searchStr, onValueChange = { searchStr = it }, singleLine = true,
placeholder = { Text("Поиск", fontSize = 22.sp) }
)
Spacer(Modifier.padding(bottom = 10.dp))
Button(
modifier = Modifier
.fillMaxWidth()
.padding(all = 10.dp),
onClick = {
if(!searchStr.isEmpty()){
navController?.navigate(
Screen.BookSearch.route.replace(
"{searchStr}",
searchStr
)
)
}
}) {
Text(stringResource(id = R.string.search_book))
}
}
}
@Preview(name = "Light Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_NO)
@Preview(name = "Dark Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_YES)
@Composable
fun SearchPreview() {
MyApplicationTheme {
Surface(
color = MaterialTheme.colorScheme.background
) {
Search(navController = rememberNavController())
}
}
}

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package com.example.myapplication.composeui
import android.content.res.Configuration
import androidx.compose.foundation.lazy.grid.GridCells
import androidx.compose.foundation.lazy.grid.LazyVerticalGrid
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Surface
import androidx.compose.runtime.Composable
import androidx.compose.runtime.LaunchedEffect
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.dp
import androidx.lifecycle.viewmodel.compose.viewModel
import androidx.navigation.NavController
import androidx.navigation.compose.rememberNavController
import androidx.paging.compose.LazyPagingItems
import androidx.paging.compose.collectAsLazyPagingItems
import com.example.myapplication.composeui.ViewModel.UserBooksViewModel
import com.example.myapplication.db.model.Book
import com.example.myapplication.ui.theme.MyApplicationTheme
import kotlinx.coroutines.launch
@Composable
fun UserBooks(navController: NavController, userId: Int, viewModel: UserBooksViewModel = viewModel(factory = AppViewModelProvider.Factory)) {
val coroutineScope = rememberCoroutineScope()
val userBooksUiState = viewModel.userBooksUiState
val pagingBook: LazyPagingItems<Book> = viewModel.bookPagedData.collectAsLazyPagingItems()
LaunchedEffect(Unit) {
viewModel.refreshState()
}
fun refresh(){
coroutineScope.launch { viewModel.refreshState() }
}
LazyVerticalGrid(columns = GridCells.Adaptive(minSize = 180.dp)){
items (pagingBook.itemCount){
index -> BookCell(navController = navController, book = pagingBook[index]!!.copy())
}
}
}
@Preview(name = "Light Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_NO)
@Preview(name = "Dark Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_YES)
@Composable
fun UserBooksPreview() {
MyApplicationTheme {
Surface(
color = MaterialTheme.colorScheme.background
) {
UserBooks(navController = rememberNavController(), 0)
}
}
}

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package com.example.myapplication.composeui.ViewModel
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.setValue
import androidx.lifecycle.SavedStateHandle
import androidx.lifecycle.ViewModel
import androidx.lifecycle.viewModelScope
import androidx.paging.PagingData
import androidx.paging.filter
import com.example.myapplication.db.model.Book
import com.example.myapplication.db.respository.BookRepository
import kotlinx.coroutines.flow.Flow
import kotlinx.coroutines.flow.map
import kotlinx.coroutines.launch
class AuthorBooksViewModel(savedStateHandle: SavedStateHandle, private val bookRepository: BookRepository) : ViewModel(){
private val authorUid: Int = checkNotNull(savedStateHandle["id"])
var authorBooksUiState by mutableStateOf(AuthorBooksUiState())
private set
init {
viewModelScope.launch {
refreshState()
}
}
suspend fun refreshState() {
authorBooksUiState = AuthorBooksUiState(bookRepository.getByUserId(authorUid))
}
val bookPagedData: Flow<PagingData<Book>> = bookRepository.loadAllBooksPaged().map{
x -> x.filter{
y-> (y.authorId == authorUid)
}
}
}
data class AuthorBooksUiState(val bookList: List<Book> = listOf())

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package com.example.myapplication.composeui.ViewModel
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.setValue
import androidx.lifecycle.ViewModel
import androidx.lifecycle.viewModelScope
import com.example.myapplication.db.model.Author
import kotlinx.coroutines.launch
import com.example.myapplication.db.respository.AuthorRepository
class AuthorDropDownViewModel(
private val authorRepository: AuthorRepository
) : ViewModel() {
var authorsListUiState by mutableStateOf(AuthorsListUiState())
private set
var authorsUiState by mutableStateOf(AuthorsUiState())
private set
init {
viewModelScope.launch {
authorsListUiState = AuthorsListUiState(authorRepository.getAllDrop())
}
}
fun setCurrentAuthor(authorId: Int) {
val author: Author? =
authorsListUiState.authorList.firstOrNull { author -> author.id == authorId }
author?.let { updateUiState(it) }
}
fun updateUiState(author: Author) {
authorsUiState = AuthorsUiState(
author = author
)
}
}
data class AuthorsListUiState(val authorList: List<Author> = listOf())
data class AuthorsUiState(
val author: Author? = null
)
fun Author.toUiState() = AuthorsUiState(author = Author(id = id, name = name))

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package com.example.myapplication.composeui.ViewModel
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.setValue
import androidx.lifecycle.SavedStateHandle
import androidx.lifecycle.ViewModel
import androidx.lifecycle.viewModelScope
import com.example.myapplication.db.model.Author
import com.example.myapplication.db.respository.AuthorRepository
import kotlinx.coroutines.launch
class AuthorEditViewModel(savedStateHandle: SavedStateHandle,
private val authorRepository: AuthorRepository
) : ViewModel(){
var authorUiState by mutableStateOf(AuthorUiState())
private set
private val authorUid: Int = checkNotNull(savedStateHandle["id"])
init {
viewModelScope.launch {
if (authorUid > 0) {
authorUiState = authorRepository.getByUid(authorUid)
.toUiState(true)
}
}
}
fun updateUiState(authorDetails: AuthorDetails) {
authorUiState = AuthorUiState(
authorDetails = authorDetails,
isEntryValid = validateInput(authorDetails)
)
}
suspend fun saveAuthor() {
if (validateInput()) {
if (authorUid > 0) {
authorRepository.updateAuthor(authorUiState.authorDetails.toAuthor(authorUid))
} else {
authorRepository.insertAuthor(authorUiState.authorDetails.toAuthor())
}
}
}
private fun validateInput(uiState: AuthorDetails = authorUiState.authorDetails): Boolean {
return with(uiState) {
name.isNotBlank()
}
}
}
data class AuthorUiState(
val authorDetails: AuthorDetails = AuthorDetails(),
val isEntryValid: Boolean = false
)
data class AuthorDetails(
val name: String = ""
)
fun AuthorDetails.toAuthor(uid: Int = 0): Author = Author(
id = uid,
name = name
)
fun Author.toDetails(): AuthorDetails = AuthorDetails(
name = name
)
fun Author.toUiState(isEntryValid: Boolean = false): AuthorUiState = AuthorUiState(
authorDetails = this.toDetails(),
isEntryValid = isEntryValid
)

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package com.example.myapplication.composeui.ViewModel
import androidx.compose.runtime.getValue
import androidx.compose.runtime.setValue
import androidx.compose.runtime.mutableStateOf
import androidx.lifecycle.ViewModel
import androidx.lifecycle.viewModelScope
import androidx.paging.PagingData
import com.example.myapplication.db.model.Author
import com.example.myapplication.db.respository.AuthorRepository
import kotlinx.coroutines.flow.Flow
import kotlinx.coroutines.launch
class AuthorListViewModel(
private val authorRepository: AuthorRepository
) : ViewModel(){
var authorListUiState by mutableStateOf(AuthorListUiState())
private set
init {
viewModelScope.launch {
refreshState()
}
}
suspend fun refreshState() {
authorListUiState = AuthorListUiState(authorRepository.getAll())
}
val authorPagedData: Flow<PagingData<Author>> = authorRepository.loadAllAuthorsPaged()
suspend fun deleteAuthor(author: Author) {
authorRepository.deleteAuthor(author)
}
}
data class AuthorListUiState(val authorList: List<Author> = listOf())

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package com.example.myapplication.composeui.ViewModel
import android.graphics.Bitmap
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.setValue
import androidx.lifecycle.SavedStateHandle
import androidx.lifecycle.ViewModel
import com.example.myapplication.db.respository.BookRepository
import androidx.lifecycle.viewModelScope
import com.example.myapplication.db.model.Book
import kotlinx.coroutines.launch
class BookEditViewModel(savedStateHandle: SavedStateHandle,
private val bookRepository: BookRepository) : ViewModel(){
var bookUiState by mutableStateOf(BookUiState())
private set
private val bookUid: Int = checkNotNull(savedStateHandle["id"])
init {
viewModelScope.launch {
if (bookUid > 0) {
bookUiState = bookRepository.getByUid(bookUid)
.toUiState(true)
}
}
}
fun updateUiState(bookDetails: BookDetails) {
bookUiState = BookUiState(
bookDetails = bookDetails,
isEntryValid = validateInput(bookDetails)
)
}
suspend fun saveBook() {
if (validateInput()) {
if (bookUid > 0) {
bookRepository.updateBook(bookUiState.bookDetails.toBook(bookUid))
} else {
bookRepository.insertBook(bookUiState.bookDetails.toBook())
}
}
}
private fun validateInput(uiState: BookDetails = bookUiState.bookDetails): Boolean {
return with(uiState) {
title.isNotBlank()
&& description.isNotBlank()
&& content.isNotBlank()
&& cover != null
&& authorId >= 0
&& userId >= 0
}
}
}
data class BookUiState(
val bookDetails: BookDetails = BookDetails(),
val isEntryValid: Boolean = false
)
data class BookDetails(
val title: String = "",
val description: String = "",
val content: String = "",
val cover: Bitmap? = null,
val authorId: Int = 0,
val userId: Int = 0,
)
fun BookDetails.toBook(uid: Int = 0): Book = Book(
id = uid,
title = title,
description = description,
content = content,
cover = cover,
authorId = authorId,
userId = userId
)
fun Book.toDetails(): BookDetails = BookDetails(
title = title,
description = description,
content = content,
cover = cover,
authorId = authorId,
userId = userId
)
fun Book.toUiState(isEntryValid: Boolean = false): BookUiState = BookUiState(
bookDetails = this.toDetails(),
isEntryValid = isEntryValid
)

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package com.example.myapplication.composeui.ViewModel
import androidx.compose.runtime.getValue
import androidx.compose.runtime.setValue
import androidx.compose.runtime.mutableStateOf
import androidx.lifecycle.ViewModel
import androidx.lifecycle.viewModelScope
import androidx.paging.PagingData
import com.example.myapplication.db.model.Book
import com.example.myapplication.db.respository.BookRepository
import kotlinx.coroutines.launch
import kotlinx.coroutines.flow.Flow
class BookListViewModel(
private val bookRepository: BookRepository
) : ViewModel() {
var bookListUiState by mutableStateOf(BookListUiState())
private set
init {
viewModelScope.launch {
refreshState()
}
}
suspend fun refreshState() {
bookListUiState = BookListUiState(bookRepository.getAll())
}
val bookPagedData: Flow<PagingData<Book>> = bookRepository.loadAllBooksPaged()
suspend fun deleteBook(book: Book) {
bookRepository.deleteBook(book)
}
}
data class BookListUiState(val bookList: List<Book> = listOf())

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package com.example.myapplication.composeui.ViewModel
import androidx.compose.runtime.getValue
import androidx.compose.runtime.setValue
import androidx.compose.runtime.mutableStateOf
import androidx.lifecycle.ViewModel
import androidx.lifecycle.viewModelScope
import androidx.lifecycle.SavedStateHandle
import com.example.myapplication.db.model.Book
import com.example.myapplication.db.model.BookWithAuthor
import com.example.myapplication.db.respository.BookRepository
import kotlinx.coroutines.flow.StateFlow
import kotlinx.coroutines.launch
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.setValue
import androidx.lifecycle.viewModelScope
import com.example.myapplication.db.database.AppContainer
import kotlinx.coroutines.flow.SharingStarted
import kotlinx.coroutines.flow.flow
import kotlinx.coroutines.flow.map
import kotlinx.coroutines.flow.stateIn
import kotlinx.coroutines.launch
class BookPageViewModel(private val bookRespository: BookRepository, savedStateHandle: SavedStateHandle) : ViewModel(){
private val bookId: Int = checkNotNull(savedStateHandle["id"])
var bookPageUiState by mutableStateOf(BookPageUiState())
private set
init {
viewModelScope.launch {
if (bookId > 0) {
refreshState()
}
}
}
suspend fun refreshState() {
bookPageUiState = BookPageUiState(bookRespository.getByUid(bookId))
}
suspend fun deleteBook(book: Book) {
bookRespository.deleteBook(book)
}
}
data class BookPageUiState(val book: Book? = null)

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package com.example.myapplication.composeui.ViewModel
import android.content.res.Configuration
import android.graphics.Bitmap
import android.graphics.BitmapFactory
import android.net.Uri
import androidx.activity.compose.rememberLauncherForActivityResult
import androidx.activity.result.contract.ActivityResultContracts
import androidx.compose.foundation.Image
import androidx.compose.foundation.background
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.IntrinsicSize
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.aspectRatio
import androidx.compose.foundation.layout.fillMaxHeight
import androidx.compose.foundation.layout.height
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.width
import androidx.compose.foundation.shape.RoundedCornerShape
import androidx.compose.material3.Button
import androidx.compose.material3.Icon
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.asImageBitmap
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.res.painterResource
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.dp
import com.example.myapplication.R
@Composable
fun ImageUploader(
bitmap: Bitmap?,
onResult: (Bitmap) -> Unit
) {
val context = LocalContext.current
val title: String = if (bitmap == null) {
"Не загружено"
} else {
"Размер: " + bitmap.width + " " + bitmap.height
}
val launcher = rememberLauncherForActivityResult(
contract = ActivityResultContracts.GetContent(),
onResult = { uri: Uri? ->
uri?.let {
val inputStream = context.contentResolver.openInputStream(uri)
val newBitmap: Bitmap = BitmapFactory.decodeStream(inputStream)
val scaledBitmap = resizeBitmapWithAspectRatio(newBitmap, 200)
onResult(scaledBitmap)
}
}
)
Row(
modifier = Modifier.height(IntrinsicSize.Min)
) {
Box(
contentAlignment = Alignment.Center,
modifier = Modifier
.background(
color = MaterialTheme.colorScheme.surface,
shape = RoundedCornerShape(10.dp)
)
.weight(0.25F)
.aspectRatio(1F)
) {
if (bitmap != null) {
Image(
bitmap = bitmap.asImageBitmap(),
contentDescription = null,
modifier = Modifier.width(100.dp)
)
} else {
Icon(
painter = painterResource(R.drawable.ic_camera),
contentDescription = null,
tint = MaterialTheme.colorScheme.onBackground
)
}
}
Spacer(modifier = Modifier.width(10.dp))
Column(
modifier = Modifier
.background(
color = MaterialTheme.colorScheme.surface,
shape = RoundedCornerShape(10.dp)
)
.fillMaxHeight()
.padding(10.dp)
.weight(0.75F)
) {
Text(
text = title,
color = MaterialTheme.colorScheme.onBackground,
style = MaterialTheme.typography.labelMedium
)
Spacer(modifier = Modifier.weight(1F))
Button(
onClick = { launcher.launch("image/*") },
){
Text(text = "+")
}
}
}
}
fun resizeBitmapWithAspectRatio(bitmap: Bitmap, maxHeight: Int): Bitmap {
if (bitmap.height <= maxHeight) {
return bitmap
}
val aspectRatio = bitmap.width.toFloat() / bitmap.height
val newWidth = (maxHeight * aspectRatio).toInt()
return Bitmap.createScaledBitmap(bitmap, newWidth, maxHeight, true)
}
@Preview(name = "Light Mode", uiMode = Configuration.UI_MODE_NIGHT_NO)
@Preview(name = "Dark Mode", uiMode = Configuration.UI_MODE_NIGHT_YES)
@Composable
private fun CuteImageLoaderPreview() {
}

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package com.example.myapplication.composeui.ViewModel
import android.annotation.SuppressLint
import android.content.Context
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.setValue
import androidx.lifecycle.ViewModel
import com.example.myapplication.db.model.User
import com.example.myapplication.db.respository.UserRepository
import com.example.myapplication.store.LiveStore
import com.example.myapplication.store.PreferencesStore
class LoginViewModel (
private val userRepository: UserRepository
) : ViewModel() {
var signInUserState by mutableStateOf(SignInUserState())
private set
fun updateState(signInUserDetails: SignInUserDetails) {
signInUserState = SignInUserState(
details = signInUserDetails
)
}
@SuppressLint("SuspiciousIndentation")
suspend fun signIn(context: Context): User? {
val user: User? = userRepository.tryLogin(signInUserState.details.login, signInUserState.details.password)
if(user != null) {
val store = PreferencesStore(context)
store.setUid(user.uid.toString())
LiveStore.user.value = user.copy()
}
else{
return null
}
signInUserState = SignInUserState(
details = signInUserState.details,
)
return user
}
}
data class SignInUserDetails(
val login: String = "",
val password: String = ""
)
data class SignInUserState(
val details: SignInUserDetails = SignInUserDetails(),
)

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package com.example.myapplication.composeui.ViewModel
import androidx.compose.runtime.getValue
import androidx.compose.runtime.setValue
import androidx.compose.runtime.mutableStateOf
import androidx.lifecycle.SavedStateHandle
import androidx.lifecycle.ViewModel
import androidx.lifecycle.viewModelScope
import androidx.paging.PagingData
import androidx.paging.filter
import com.example.myapplication.db.model.Book
import com.example.myapplication.db.respository.BookRepository
import kotlinx.coroutines.launch
import kotlinx.coroutines.flow.Flow
import kotlinx.coroutines.flow.map
import java.util.Locale
class SearchPageViewModel(private val bookRepository: BookRepository, savedStateHandle: SavedStateHandle) : ViewModel(){
private val searchStr: String = checkNotNull(savedStateHandle["searchStr"])
var searchPageUiState by mutableStateOf(SearchPageUiState())
private set
init {
viewModelScope.launch {
refreshState()
}
}
suspend fun refreshState() {
searchPageUiState = SearchPageUiState(bookRepository.getBySearch(searchStr))
}
val bookPagedData: Flow<PagingData<Book>> = bookRepository.loadAllBooksPaged().map{
x -> x.filter{
y-> (y.title.lowercase(Locale.ROOT)).contains(searchStr.lowercase(Locale.ROOT))
}
}
}
data class SearchPageUiState(val bookList: List<Book> = listOf())

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package com.example.myapplication.composeui.ViewModel
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.setValue
import androidx.lifecycle.ViewModel
import androidx.lifecycle.viewModelScope
import androidx.paging.PagingData
import androidx.paging.filter
import com.example.myapplication.db.model.Book
import com.example.myapplication.db.respository.BookRepository
import com.example.myapplication.store.LiveStore
import kotlinx.coroutines.flow.Flow
import kotlinx.coroutines.flow.map
import kotlinx.coroutines.launch
class UserBooksViewModel(private val bookRepository: BookRepository) : ViewModel(){
private val userUid: Int = LiveStore.user.value?.uid ?: 0
var userBooksUiState by mutableStateOf(UserBooksUiState())
private set
init {
viewModelScope.launch {
refreshState()
}
}
suspend fun refreshState() {
userBooksUiState = UserBooksUiState(bookRepository.getByUserId(userUid))
}
val bookPagedData: Flow<PagingData<Book>> = bookRepository.loadAllBooksPaged().map{
x -> x.filter{
y-> (y.userId == userUid)
}
}
}
data class UserBooksUiState(val bookList: List<Book> = listOf())

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package com.example.myapplication.composeui.ViewModel
import android.graphics.Bitmap
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.setValue
import androidx.lifecycle.SavedStateHandle
import androidx.lifecycle.ViewModel
import com.example.myapplication.db.respository.UserRepository
import androidx.lifecycle.viewModelScope
import com.example.myapplication.db.model.User
import com.example.myapplication.store.LiveStore
import kotlinx.coroutines.launch
class UserEditViewModel(savedStateHandle: SavedStateHandle,
private val userRepository: UserRepository
) : ViewModel(){
var userUiState by mutableStateOf(UserUiState())
private set
private val userUid: Int = LiveStore.user.value?.uid ?: 0
init {
viewModelScope.launch {
if (userUid > 0) {
userUiState = userRepository.getByUid(userUid)!!
.toUiState(true)
}
}
}
fun updateUiState(userDetails: UserDetails) {
userUiState = UserUiState(
userDetails = userDetails,
isEntryValid = validateInput(userDetails)
)
}
suspend fun saveUser() {
if (validateInput()) {
if (userUid > 0) {
userRepository.update(userUiState.userDetails.toUser(userUid))
} else {
userRepository.insert(userUiState.userDetails.toUser())
}
}
}
private fun validateInput(uiState: UserDetails = userUiState.userDetails): Boolean {
return with(uiState) {
login.isNotBlank()
&& password.isNotBlank()
&& email.isNotBlank()
&& role.isNotBlank()
}
}
}
data class UserUiState(
val userDetails: UserDetails = UserDetails(),
val isEntryValid: Boolean = false
)
data class UserDetails(
val login: String = "",
val password: String = "",
val email: String = "",
val role: String = ""
)
fun UserDetails.toUser(uid: Int = 0): User = User(
uid = uid,
login = login,
password = password,
email = email,
role = role
)
fun User.toDetails(): UserDetails = UserDetails(
login = login,
password = password,
email = email,
role = role
)
fun User.toUiState(isEntryValid: Boolean = false): UserUiState = UserUiState(
userDetails = this.toDetails(),
isEntryValid = isEntryValid
)

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package com.example.myapplication.composeui.ViewModel
import androidx.compose.runtime.getValue
import androidx.compose.runtime.setValue
import androidx.compose.runtime.mutableStateOf
import androidx.lifecycle.ViewModel
import androidx.lifecycle.viewModelScope
import androidx.lifecycle.SavedStateHandle
import com.example.myapplication.db.model.User
import kotlinx.coroutines.launch
import com.example.myapplication.db.respository.UserRepository
import com.example.myapplication.store.LiveStore
class UserPageViewModel(savedStateHandle: SavedStateHandle, private val userRepository: UserRepository) : ViewModel(){
var userPageUiState by mutableStateOf(UserPageUiState())
private set
init {
viewModelScope.launch {
if (LiveStore.user.value != null) {
refreshState()
}
}
}
suspend fun refreshState() {
userPageUiState = UserPageUiState(LiveStore.user.value)
}
}
data class UserPageUiState(val user: User? = null)

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package com.example.myapplication.composeui.authenticator
import androidx.compose.runtime.Composable
import androidx.compose.runtime.collectAsState
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.ui.platform.LocalContext
import androidx.lifecycle.viewmodel.compose.viewModel
import com.example.myapplication.store.LiveStore
import com.example.myapplication.store.PreferencesStore
import com.example.myapplication.composeui.AppViewModelProvider
import kotlinx.coroutines.flow.first
import kotlinx.coroutines.launch
@Composable
fun Authenticator(
viewModel: AuthenticatorViewModel = viewModel(factory = AppViewModelProvider.Factory)
) {
val context = LocalContext.current
val store = PreferencesStore(context)
val scope = rememberCoroutineScope()
val uid = store.getUid().collectAsState(initial = "").value
fun synchronize() {
scope.launch {
if (uid == "") {
LiveStore.user.value = null
return@launch
}
try {
viewModel.findUserByUid(uid.toInt())
}
catch (_: Exception){}
}
}
synchronize()
}

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package com.example.myapplication.composeui.authenticator
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.setValue
import androidx.lifecycle.ViewModel
import com.example.myapplication.db.model.User
import com.example.myapplication.db.respository.UserRepository
class AuthenticatorViewModel(
private val userRepository: UserRepository
) : ViewModel() {
var authUiState by mutableStateOf(AuthenticatorUiState())
private set
suspend fun findUserByUid(uid: Int) {
authUiState = AuthenticatorUiState(userRepository.getByUid(uid))
}
}
data class AuthenticatorUiState(val user: User? = null)

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package com.example.myapplication.composeui.navigation
import android.content.res.Configuration
import androidx.compose.foundation.layout.PaddingValues
import androidx.compose.foundation.layout.padding
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.ArrowBack
import androidx.compose.foundation.layout.Box
import androidx.compose.material3.ExperimentalMaterial3Api
import androidx.compose.material3.Icon
import androidx.compose.material3.IconButton
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.NavigationBar
import androidx.compose.material3.NavigationBarItem
import androidx.compose.material3.Scaffold
import androidx.compose.material3.Surface
import androidx.compose.material3.Text
import androidx.compose.material3.TopAppBar
import androidx.compose.material3.TopAppBarDefaults
import androidx.compose.runtime.Composable
import androidx.compose.runtime.getValue
import androidx.compose.ui.Modifier
import androidx.compose.ui.draw.shadow
import androidx.compose.ui.res.stringResource
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.dp
import androidx.navigation.NavDestination
import androidx.navigation.NavDestination.Companion.hierarchy
import androidx.navigation.NavGraph.Companion.findStartDestination
import androidx.navigation.NavHostController
import androidx.navigation.NavType
import androidx.navigation.compose.NavHost
import androidx.navigation.compose.composable
import androidx.navigation.compose.currentBackStackEntryAsState
import androidx.navigation.compose.rememberNavController
import androidx.navigation.navArgument
import com.example.myapplication.ui.theme.MyApplicationTheme
import com.example.myapplication.R
import com.example.myapplication.composeui.AuthorBooks
import com.example.myapplication.composeui.Main
import com.example.myapplication.composeui.Registration
import com.example.myapplication.composeui.Enter
import com.example.myapplication.composeui.Profile
import com.example.myapplication.composeui.ProfileEdit
import com.example.myapplication.composeui.Search
import com.example.myapplication.composeui.Catalog
import com.example.myapplication.composeui.BookView
import com.example.myapplication.composeui.BookRead
import com.example.myapplication.composeui.BookEdit
import com.example.myapplication.composeui.BookSearch
import com.example.myapplication.composeui.ListAuthors
import com.example.myapplication.composeui.AuthorEdit
import com.example.myapplication.composeui.UserBooks
@OptIn(ExperimentalMaterial3Api::class)
@Composable
fun Topbar(
navController: NavHostController,
currentScreen: Screen?
) {
Box(modifier = Modifier.shadow(1.dp)) {
TopAppBar(
colors = TopAppBarDefaults.smallTopAppBarColors(
containerColor = MaterialTheme.colorScheme.primary,
titleContentColor = MaterialTheme.colorScheme.onPrimary,
),
title = {
Text(stringResource(currentScreen?.resourceId ?: R.string.app_name))
},
navigationIcon = {
if (
navController.previousBackStackEntry != null
&& (currentScreen == null || !currentScreen.showInBottomBar)
) {
IconButton(onClick = { navController.navigateUp() }) {
Icon(
imageVector = Icons.Filled.ArrowBack,
contentDescription = null,
tint = MaterialTheme.colorScheme.onPrimary
)
}
}
}
)
}
}
@Composable
fun Navbar(
navController: NavHostController,
currentDestination: NavDestination?,
modifier: Modifier = Modifier
) {
NavigationBar(modifier) {
Screen.bottomBarItems.forEach { screen ->
NavigationBarItem(
icon = { Icon(screen.icon, contentDescription = null) },
label = { Text(stringResource(screen.resourceId)) },
selected = currentDestination?.hierarchy?.any { it.route == screen.route } == true,
onClick = {
navController.navigate(screen.route) {
popUpTo(navController.graph.findStartDestination().id) {
saveState = true
}
launchSingleTop = true
restoreState = true
}
}
)
}
}
}
@Composable
fun Navhost(
navController: NavHostController,
innerPadding: PaddingValues, modifier:
Modifier = Modifier
) {
NavHost(
navController,
startDestination = Screen.Main.route,
modifier.padding(innerPadding)
) {
composable(Screen.Main.route) { Main(navController) }
composable(Screen.Registration.route) { Registration(navController) }
composable(Screen.Enter.route) { Enter(navController) }
composable(Screen.Profile.route) { Profile(navController) }
composable(
Screen.ProfileEdit.route,
arguments = listOf(navArgument("id") { type = NavType.IntType })
) { backStackEntry ->
backStackEntry.arguments?.let { ProfileEdit(navController) }
}
composable(Screen.Search.route) { Search(navController) }
composable(Screen.Catalog.route) { Catalog(navController) }
composable(
Screen.BookView.route,
arguments = listOf(navArgument("id") { type = NavType.IntType })
) { backStackEntry ->
backStackEntry.arguments?.let { BookView(navController, it.getInt("id")) }
}
composable(
Screen.BookRead.route,
arguments = listOf(navArgument("id") { type = NavType.IntType })
) { backStackEntry ->
backStackEntry.arguments?.let { BookRead(it.getInt("id")) }
}
composable(
Screen.BookEdit.route,
arguments = listOf(navArgument("id") { type = NavType.IntType })
) { backStackEntry ->
backStackEntry.arguments?.let { BookEdit(navController) }
}
composable(Screen.ListAuthors.route) { ListAuthors(navController) }
composable(
Screen.AuthorEdit.route,
arguments = listOf(navArgument("id") { type = NavType.IntType })
) { backStackEntry ->
backStackEntry.arguments?.let { AuthorEdit(navController) }
}
composable(
Screen.BookSearch.route,
arguments = listOf(navArgument("searchStr") { type = NavType.StringType })
) { backStackEntry ->
backStackEntry.arguments?.let { BookSearch(navController = navController ,it.getString ("searchStr", "")) }
}
composable(
Screen.AuthorBooks.route,
arguments = listOf(navArgument("id") { type = NavType.IntType })
) { backStackEntry ->
backStackEntry.arguments?.let { AuthorBooks(navController = navController, it.getInt("id")) }
}
composable(
Screen.UserBooks.route,
arguments = listOf(navArgument("id") { type = NavType.IntType })
) { backStackEntry ->
backStackEntry.arguments?.let { UserBooks(navController = navController, it.getInt("id")) }
}
}
}
@OptIn(ExperimentalMaterial3Api::class)
@Composable
fun MainNavbar() {
val navController = rememberNavController()
val navBackStackEntry by navController.currentBackStackEntryAsState()
val currentDestination = navBackStackEntry?.destination
val currentScreen = currentDestination?.route?.let { Screen.getItem(it) }
Scaffold(
topBar = {
Topbar(navController, currentScreen)
},
bottomBar = {
if (currentScreen == null || currentScreen.showInBottomBar) {
Navbar(navController, currentDestination)
}
}
) { innerPadding ->
Navhost(navController, innerPadding)
}
}
@Preview(name = "Light Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_NO)
@Preview(name = "Dark Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_YES)
@Composable
fun MainNavbarPreview() {
MyApplicationTheme {
Surface(
color = MaterialTheme.colorScheme.background
) {
MainNavbar()
}
}
}

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package com.example.myapplication.composeui.navigation
import androidx.annotation.StringRes
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.AccountCircle
import androidx.compose.material.icons.filled.Face
import androidx.compose.material.icons.filled.Favorite
import androidx.compose.material.icons.filled.List
import androidx.compose.material.icons.filled.Search
import androidx.compose.ui.graphics.vector.ImageVector
import com.example.myapplication.R
enum class Screen(
val route: String,
@StringRes val resourceId: Int,
val icon: ImageVector = Icons.Filled.Favorite,
val showInBottomBar: Boolean = true
) {
Main(
"main", R.string.main_title, showInBottomBar = false
),
Registration(
"registration", R.string.registration_title, showInBottomBar = false
),
Enter(
"enter", R.string.enter_title, showInBottomBar = false
),
Profile(
"profile", R.string.profile, Icons.Filled.AccountCircle
),
ProfileEdit(
"profile-edit/{id}", R.string.profile, showInBottomBar = false
),
Search(
"search", R.string.search, Icons.Filled.Search
),
Catalog(
"catalog", R.string.catalog, Icons.Filled.List
),
ListAuthors(
"listauthors", R.string.listauthors, Icons.Filled.Face
),
AuthorEdit(
"author-edit/{id}", R.string.author, showInBottomBar = false
),
BookSearch(
"book-search/{searchStr}", R.string.search, showInBottomBar = false
),
AuthorBooks(
"author-books/{id}", R.string.authors_books, showInBottomBar = false
),
UserBooks(
"user-books/{id}", R.string.my_books, showInBottomBar = false
),
BookView(
"book-view/{id}", R.string.book_view_title, showInBottomBar = false
),
BookEdit(
"book-edit/{id}", R.string.book_view_title, showInBottomBar = false
),
BookRead(
"book-read/{id}", R.string.book_view_title, showInBottomBar = false
);
companion object {
val bottomBarItems = listOf(
Profile,
Search,
Catalog,
ListAuthors
)
fun getItem(route: String): Screen? {
val findRoute = route.split("/").first()
return values().find { value -> value.route.startsWith(findRoute) }
}
}
}

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package com.example.myapplication.db.dao
import androidx.paging.PagingSource
import androidx.room.Dao
import androidx.room.Delete
import androidx.room.Insert
import androidx.room.Query
import androidx.room.Update
import com.example.myapplication.db.model.Author
import kotlinx.coroutines.flow.Flow
@Dao
interface AuthorDao {
@Query("select * from authors order by author_name collate nocase asc")
suspend fun getAll(): List<Author>
@Query("select * from authors order by author_name collate nocase asc")
suspend fun getAllDrop(): List<Author>
@Query("select * from authors where authors.id = :uid")
suspend fun getByUid(uid: Int): Author
@Query("select * from authors order by author_name collate nocase asc")
fun loadAllAuthorsPaged(): PagingSource<Int, Author>
@Query("DELETE FROM authors")
suspend fun clearAll()
@Insert
suspend fun insert(vararg author: Author)
@Update
suspend fun update(author: Author)
@Delete
suspend fun delete(author: Author)
}

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package com.example.myapplication.db.dao
import androidx.paging.PagingSource
import androidx.room.Dao
import androidx.room.Delete
import androidx.room.Insert
import androidx.room.Query
import androidx.room.Update
import kotlinx.coroutines.flow.Flow
import com.example.myapplication.db.model.Book;
import com.example.myapplication.db.model.BookWithAuthor;
@Dao
interface BookDao {
@Query("select * from books order by title collate nocase asc")
suspend fun getAll(): List<Book>
@Query("select * from books where books.id = :uid")
suspend fun getByUid(uid: Int): Book
@Query("select * from books where books.title LIKE '%' || :searchStr || '%'")
suspend fun getBySearch(searchStr: String): List<Book>
@Query("select * from books where books.user_id = :userId")
suspend fun getByUserId(userId: Int): List<Book>
@Query("select * from books where books.author_id = :authorId")
suspend fun getByAuthorId(authorId: Int): List<Book>
@Query("select * from books order by title collate nocase asc")
fun loadAllBooksPaged(): PagingSource<Int, Book>
@Query("DELETE FROM books")
suspend fun clearAll()
@Insert
suspend fun insert(vararg book: Book)
@Update
suspend fun update(book: Book)
@Delete
suspend fun delete(book: Book)
}

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package com.example.myapplication.db.dao
import androidx.room.Dao
import androidx.room.Insert
import androidx.room.OnConflictStrategy
import androidx.room.Query
import com.example.myapplication.db.model.RemoteKeyType
import com.example.myapplication.db.model.RemoteKeys
@Dao
interface RemoteKeysDao {
@Query("SELECT * FROM remote_keys WHERE entityId = :entityId AND type = :type")
suspend fun getRemoteKeys(entityId: Int, type: RemoteKeyType): RemoteKeys?
@Insert(onConflict = OnConflictStrategy.REPLACE)
suspend fun insertAll(remoteKey: List<RemoteKeys>)
@Query("DELETE FROM remote_keys WHERE type = :type")
suspend fun clearRemoteKeys(type: RemoteKeyType)
}

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package com.example.myapplication.db.dao
import androidx.room.Dao
import androidx.room.Delete
import androidx.room.Insert
import androidx.room.Query
import androidx.room.Update
import kotlinx.coroutines.flow.Flow
import com.example.myapplication.db.model.User;
import com.example.myapplication.db.model.Book;
@Dao
interface UserDao {
@Query("select * from users")
suspend fun getAll(): List<User>
@Query("select * from users where users.uid = :uid")
suspend fun getByUid(uid: Int): User?
@Query("select * from books where books.user_id = :userid")
suspend fun getUserBooks(userid: Int): List<Book>
@Query("select * from users where login = :login and password = :password")
suspend fun tryLogin(login: String, password: String): User?
@Query("DELETE FROM users")
suspend fun clearAll()
@Insert
suspend fun insert(vararg user: User)
@Update
suspend fun update(user: User)
@Delete
suspend fun delete(user: User)
}

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package com.example.myapplication.db.database
import android.content.Context
import com.example.myapplication.db.dao.BookDao
import com.example.myapplication.db.dao.AuthorDao
import com.example.myapplication.db.dao.UserDao
import com.example.myapplication.db.respository.BookRepository
import com.example.myapplication.db.respository.AuthorRepository
import com.example.myapplication.db.respository.UserRepository
import com.example.myapplication.db.respository.OfflineBookRepository
import com.example.myapplication.db.respository.OfflineAuthorRepository
import com.example.myapplication.db.respository.OfflineRemoteKeyRepository
import com.example.myapplication.db.respository.OfflineUserRepository
import com.example.myapplication.api.respositories.RestBookRepository
import com.example.myapplication.api.respositories.RestAuthorRepository
import com.example.myapplication.api.respositories.RestUserRepository
import com.example.myapplication.api.ServerService
interface AppContainer {
val bookRestRepository: RestBookRepository
val authorRestRepository: RestAuthorRepository
val userRestRepository: RestUserRepository
companion object {
const val TIMEOUT = 5000L
const val LIMIT = 10
}
}
class AppDataContainer(private val context: Context) : AppContainer {
private val bookRepository: OfflineBookRepository by lazy {
OfflineBookRepository(AppDatabase.getInstance(context).bookDao())
}
private val authorRepository: OfflineAuthorRepository by lazy {
OfflineAuthorRepository(AppDatabase.getInstance(context).authorDao())
}
private val userRepository: OfflineUserRepository by lazy {
OfflineUserRepository(AppDatabase.getInstance(context).userDao())
}
private val remoteKeyRepository: OfflineRemoteKeyRepository by lazy {
OfflineRemoteKeyRepository(AppDatabase.getInstance(context).remoteKeysDao())
}
override val bookRestRepository: RestBookRepository by lazy {
RestBookRepository(
ServerService.getInstance(),
bookRepository,
authorRepository,
userRepository,
remoteKeyRepository,
AppDatabase.getInstance(context)
)
}
override val authorRestRepository: RestAuthorRepository by lazy {
RestAuthorRepository(
ServerService.getInstance(),
authorRepository,
bookRepository,
remoteKeyRepository,
AppDatabase.getInstance(context)
)
}
override val userRestRepository: RestUserRepository by lazy{
RestUserRepository(
ServerService.getInstance(),
userRepository,
AppDatabase.getInstance(context)
)
}
companion object {
const val TIMEOUT = 5000L
}
}

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package com.example.myapplication.db.database
import android.content.Context
import android.graphics.Bitmap
import android.graphics.BitmapFactory
import androidx.room.Database
import androidx.room.Room
import androidx.room.RoomDatabase
import androidx.room.TypeConverters
import androidx.sqlite.db.SupportSQLiteDatabase
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.launch
import com.example.myapplication.db.dao.UserDao;
import com.example.myapplication.db.dao.BookDao;
import com.example.myapplication.db.dao.AuthorDao;
import com.example.myapplication.db.model.User;
import com.example.myapplication.db.model.Book;
import com.example.myapplication.db.model.Author;
import com.example.myapplication.R
import com.example.myapplication.db.dao.RemoteKeysDao
import com.example.myapplication.db.model.RemoteKeys
@Database(entities = [Book::class, Author::class, User::class, RemoteKeys::class], version = 1, exportSchema = false)
@TypeConverters(Converters::class)
abstract class AppDatabase : RoomDatabase() {
abstract fun bookDao(): BookDao
abstract fun authorDao(): AuthorDao
abstract fun userDao(): UserDao
abstract fun remoteKeysDao(): RemoteKeysDao
companion object {
private const val DB_NAME: String = "PMU4"
@Volatile
private var INSTANCE: AppDatabase? = null
private suspend fun populateDatabase(context: Context) {
INSTANCE?.let { database ->
/* //Users
val userDao = database.userDao()
val user1 = User(1, "Admin", "Admin", "admin@mail.ru", "ADMIN")
val user2 = User(2, "User1", "123", "u1@mail.ru", "USER")
userDao.insert(user1)
userDao.insert(user2)
// Authors
val authorDao = database.authorDao()
val author1 = Author(1, "Дж. Оруэлл")
val author2 = Author(2, "М.А. Булгаков")
val author3 = Author(3, "Р. Брэдбери")
authorDao.insert(author1)
authorDao.insert(author2)
authorDao.insert(author3)
// Books
val bookDao = database.bookDao()
val book1 = Book(1,"1984", "Роман о том, как репрессивная машина тоталитарного государства может уничтожить любую личность.", "Был холодный ясный апрельский день, и часы пробили тринадцать.\n" + "Уинстон Смит, прижав подбородок к груди и ежась от омерзительного ветра, быстро скользнул в стеклянные двери Дома Победы, но все же вихрь песка и пыли успел ворваться вместе с ним.", getBookImage(context,"or1984"), 1, 1)
val book2 = Book(2,"Собачье сердце", "Роман о бродячем псе Шарике, превращенном в человека.", "Уу-у-у-у-гу-гуг-гуу! О, гляньте на меня, я погибаю.\n" + "Вьюга в подворотне ревёт мне отходную, и я вою с ней.\n" + "Пропал я, пропал.", getBookImage(context,"dogsheart"), 2, 1)
val book3 = Book(3,"Вельд", "Рассказ о зависимости от технических устройств, потере человечности.", "— Джорджи, пожалуйста, посмотри детскую комнату.\n" + "А что с ней?\n" + "Не знаю.\n" + "— Так в чем же дело?", getBookImage(context,"veld"), 3, 1)
val book4 = Book(4,"Роковые яйца", "Рассказ, критикующий стремление к прогрессу без учета последствий.","16 апреля 1928 года, вечером, профессор зоологии IV государственного университета и директор зооинститута в Москве Персиков вошел в свой кабинет, помещающийся в зооинституте, что на улице Герцена.\n" + "Профессор зажег верхний матовый шар и огляделся.", getBookImage(context,"eggs"), 2, 2)
bookDao.insert(book1)
bookDao.insert(book2)
bookDao.insert(book3)
bookDao.insert(book4) */
}
}
fun getInstance(appContext: Context): AppDatabase {
return INSTANCE ?: synchronized(this) {
Room.databaseBuilder(
appContext,
AppDatabase::class.java,
DB_NAME
)
.addCallback(object : Callback() {
override fun onCreate(db: SupportSQLiteDatabase) {
super.onCreate(db)
CoroutineScope(Dispatchers.IO).launch {
populateDatabase(appContext)
}
}
})
.build()
.also { INSTANCE = it }
}
}
private fun getBookImage(context: Context, imageId: String): Bitmap {
val inputStream = context.assets.open("${imageId}.jpg")
val bitmap = BitmapFactory.decodeStream(inputStream)
return bitmap
}
}
}

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package com.example.myapplication.db.database
import android.graphics.Bitmap
import android.graphics.BitmapFactory
import androidx.room.TypeConverter
import java.io.ByteArrayOutputStream
class Converters {
@TypeConverter
fun fromBitmap(bitmap: Bitmap): ByteArray {
val outputStream = ByteArrayOutputStream()
bitmap.compress(Bitmap.CompressFormat.JPEG, 1, outputStream)
return outputStream.toByteArray()
}
@TypeConverter
fun toBitmap(byteArray: ByteArray): Bitmap {
return BitmapFactory.decodeByteArray(byteArray, 0, byteArray.size)
}
}

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package com.example.myapplication.db.model
import androidx.room.ColumnInfo
import androidx.room.Entity
import androidx.room.Ignore
import androidx.room.PrimaryKey
@Entity(tableName = "authors")
data class Author(
@PrimaryKey(autoGenerate = true)
val id: Int = 0,
@ColumnInfo(name = "author_name")
val name: String
) {
override fun equals(other: Any?): Boolean {
if (this === other) return true
if (javaClass != other?.javaClass) return false
other as Author
if (id != other.id) return false
return true
}
override fun hashCode(): Int {
return id ?: -1
}
}

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package com.example.myapplication.db.model
import android.graphics.Bitmap
import androidx.annotation.DrawableRes
import androidx.room.ColumnInfo
import androidx.room.Entity
import androidx.room.ForeignKey
import androidx.room.PrimaryKey
import androidx.room.Ignore
@Entity(
tableName = "books", foreignKeys = [
ForeignKey(
entity = Author::class,
parentColumns = ["id"],
childColumns = ["author_id"],
onDelete = ForeignKey.CASCADE,
onUpdate = ForeignKey.CASCADE
),
ForeignKey(
entity = User::class,
parentColumns = ["uid"],
childColumns = ["user_id"],
onDelete = ForeignKey.CASCADE,
onUpdate = ForeignKey.CASCADE
)
]
)
data class Book(
@PrimaryKey(autoGenerate = true)
val id: Int = 0,
@ColumnInfo(name = "title")
val title: String,
@ColumnInfo(name = "description")
val description: String,
@ColumnInfo(name = "content")
val content: String,
@ColumnInfo(name = "cover")
val cover: Bitmap?,
@ColumnInfo(name = "author_id", index = true)
val authorId: Int,
@ColumnInfo(name = "user_id", index = true)
val userId: Int
) {
override fun equals(other: Any?): Boolean {
if (this === other) return true
if (javaClass != other?.javaClass) return false
other as Book
if (id != other.id) return false
return true
}
override fun hashCode(): Int {
return id ?: -1
}
}

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package com.example.myapplication.db.model
import androidx.room.ColumnInfo
import androidx.room.Embedded
data class BookWithAuthor(
@Embedded
val book: Book,
@ColumnInfo(name = "author_name")
val authorName: String
)

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package com.example.myapplication.db.model
import androidx.room.Entity
import androidx.room.PrimaryKey
import androidx.room.TypeConverter
import androidx.room.TypeConverters
enum class RemoteKeyType(private val type: String) {
BOOK(Book::class.simpleName ?: "Book"),
AUTHOR(Author::class.simpleName ?: "Author");
@TypeConverter
fun toRemoteKeyType(value: String) = RemoteKeyType.values().first { it.type == value }
@TypeConverter
fun fromRemoteKeyType(value: RemoteKeyType) = value.type
}
@Entity(tableName = "remote_keys")
data class RemoteKeys(
@PrimaryKey val entityId: Int,
@TypeConverters(RemoteKeyType::class)
val type: RemoteKeyType,
val prevKey: Int?,
val nextKey: Int?
)

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package com.example.myapplication.db.model
import androidx.room.ColumnInfo
import androidx.room.Entity
import androidx.room.PrimaryKey
import androidx.room.Ignore
import androidx.room.Index
@Entity(tableName = "users", indices = [(Index(value = ["login"], unique = true))])
data class User(
@PrimaryKey(autoGenerate = true)
val uid: Int = 0,
@ColumnInfo(name = "login")
var login: String,
@ColumnInfo(name = "password")
var password: String,
@ColumnInfo(name = "email")
var email: String,
@ColumnInfo(name = "admin")
var role: String,
) {
override fun equals(other: Any?): Boolean {
if (this === other) return true
if (javaClass != other?.javaClass) return false
other as User
if (uid != other.uid) return false
return true
}
override fun hashCode(): Int {
return uid ?: -1
}
}

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package com.example.myapplication.db.respository
import androidx.paging.PagingData
import com.example.myapplication.db.model.Author
import kotlinx.coroutines.flow.Flow
interface AuthorRepository {
suspend fun getAll(): List<Author>
suspend fun getAllDrop(): List<Author>
suspend fun getByUid(uid: Int): Author
fun loadAllAuthorsPaged(): Flow<PagingData<Author>>
suspend fun insertAuthor(author: Author)
suspend fun updateAuthor(author: Author)
suspend fun deleteAuthor(author: Author)
}

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package com.example.myapplication.db.respository
import androidx.paging.PagingData
import androidx.paging.PagingSource
import com.example.myapplication.db.model.Book
import com.example.myapplication.db.model.BookWithAuthor
import kotlinx.coroutines.flow.Flow
interface BookRepository {
suspend fun getAll(): List<Book>
suspend fun getByUid(uid: Int): Book
suspend fun getBySearch(searchStr: String): List<Book>
suspend fun getByUserId(userId: Int): List<Book>
suspend fun getByAuthorId(authorId: Int): List<Book>
fun loadAllBooksPaged(): Flow<PagingData<Book>>
suspend fun insertBook(book: Book)
suspend fun updateBook(book: Book)
suspend fun deleteBook(book: Book)
}

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package com.example.myapplication.db.respository
import androidx.paging.Pager
import androidx.paging.PagingConfig
import androidx.paging.PagingData
import androidx.paging.PagingSource
import com.example.myapplication.db.database.AppContainer
import com.example.myapplication.db.dao.AuthorDao
import com.example.myapplication.db.model.Author
import kotlinx.coroutines.flow.Flow
class OfflineAuthorRepository(private val authorDao: AuthorDao) : AuthorRepository {
override suspend fun getAll(): List<Author> = authorDao.getAll()
override suspend fun getAllDrop(): List<Author> = authorDao.getAllDrop()
override suspend fun getByUid(uid: Int): Author = authorDao.getByUid(uid)
suspend fun insertAuthors(authors: List<Author>) =
authorDao.insert(*authors.toTypedArray())
override fun loadAllAuthorsPaged(): Flow<PagingData<Author>> = Pager(
config = PagingConfig(
pageSize = AppContainer.LIMIT,
enablePlaceholders = false
),
pagingSourceFactory = authorDao::loadAllAuthorsPaged
).flow
fun loadAuthorsPaged(): PagingSource<Int, Author> = authorDao.loadAllAuthorsPaged()
suspend fun clearAll() = authorDao.clearAll()
override suspend fun insertAuthor(author: Author) = authorDao.insert(author)
override suspend fun updateAuthor(author: Author) = authorDao.update(author)
override suspend fun deleteAuthor(author: Author) = authorDao.delete(author)
}

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package com.example.myapplication.db.respository
import androidx.paging.Pager
import androidx.paging.PagingConfig
import androidx.paging.PagingData
import androidx.paging.PagingSource
import com.example.myapplication.db.database.AppContainer
import com.example.myapplication.db.dao.BookDao
import com.example.myapplication.db.model.Book
import kotlinx.coroutines.flow.Flow
class OfflineBookRepository(private val bookDao: BookDao) : BookRepository {
override suspend fun getAll(): List<Book> = bookDao.getAll()
override suspend fun getByUid(uid: Int): Book = bookDao.getByUid(uid)
override suspend fun getBySearch(searchStr: String): List<Book> = bookDao.getBySearch(searchStr)
override suspend fun getByUserId(userId: Int): List<Book> = bookDao.getByUserId(userId)
override suspend fun getByAuthorId(authorId: Int): List<Book> = bookDao.getByAuthorId(authorId)
suspend fun insertBooks(books: List<Book>) =
bookDao.insert(*books.toTypedArray())
override fun loadAllBooksPaged(): Flow<PagingData<Book>> = Pager(
config = PagingConfig(
pageSize = AppContainer.LIMIT,
enablePlaceholders = false
),
pagingSourceFactory = bookDao::loadAllBooksPaged
).flow
fun loadBooksPaged(): PagingSource<Int, Book> = bookDao.loadAllBooksPaged()
suspend fun clearAll() = bookDao.clearAll()
override suspend fun insertBook(book: Book) = bookDao.insert(book)
override suspend fun updateBook(book: Book) = bookDao.update(book)
override suspend fun deleteBook(book: Book) = bookDao.delete(book)
}

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package com.example.myapplication.db.respository
import com.example.myapplication.db.dao.RemoteKeysDao
import com.example.myapplication.db.model.RemoteKeyType
import com.example.myapplication.db.model.RemoteKeys
class OfflineRemoteKeyRepository( private val remoteKeysDao: RemoteKeysDao) : RemoteKeyRepository {
override suspend fun getAllRemoteKeys(id: Int, type: RemoteKeyType) =
remoteKeysDao.getRemoteKeys(id, type)
override suspend fun createRemoteKeys(remoteKeys: List<RemoteKeys>) =
remoteKeysDao.insertAll(remoteKeys)
override suspend fun deleteRemoteKey(type: RemoteKeyType) =
remoteKeysDao.clearRemoteKeys(type)
}

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package com.example.myapplication.db.respository
import com.example.myapplication.db.dao.UserDao;
import com.example.myapplication.db.model.User;
import com.example.myapplication.db.model.Book;
import kotlinx.coroutines.flow.Flow
class OfflineUserRepository(private val userDao: UserDao) : UserRepository {
override suspend fun getAll(): List<User> = userDao.getAll()
override suspend fun getByUid(uid: Int): User? = userDao.getByUid(uid)
override suspend fun getUserBooks(userid: Int): List<Book> = userDao.getUserBooks(userid)
override suspend fun tryLogin(login: String, password: String): User? = userDao.tryLogin(login, password)
suspend fun insertUsers(users: List<User>) =
userDao.insert(*users.toTypedArray())
suspend fun clearAll() = userDao.clearAll()
override suspend fun insert(user: User) = userDao.insert(user)
override suspend fun update(user: User) = userDao.update(user)
override suspend fun delete(user: User) = userDao.delete(user)
}

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package com.example.myapplication.db.respository
import com.example.myapplication.db.model.RemoteKeyType
import com.example.myapplication.db.model.RemoteKeys
interface RemoteKeyRepository {
suspend fun getAllRemoteKeys(id: Int, type: RemoteKeyType): RemoteKeys?
suspend fun createRemoteKeys(remoteKeys: List<RemoteKeys>)
suspend fun deleteRemoteKey(type: RemoteKeyType)
}

View File

@ -0,0 +1,14 @@
package com.example.myapplication.db.respository
import com.example.myapplication.db.model.User;
import com.example.myapplication.db.model.Book;
import kotlinx.coroutines.flow.Flow
interface UserRepository {
suspend fun getAll(): List<User>
suspend fun getByUid(uid: Int): User?
suspend fun getUserBooks(userid: Int): List<Book>
suspend fun tryLogin(login: String, password: String): User?
suspend fun insert(user: User)
suspend fun update(user: User)
suspend fun delete(user: User)
}

View File

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package com.example.myapplication.store
import androidx.lifecycle.MutableLiveData
import com.example.myapplication.db.model.User
class LiveStore{
companion object{
val user = MutableLiveData<User?>(null)
fun getUserId(): Int{
return user.value?.uid ?: 0
}
fun getRole(): String{
return user.value?.role ?: "USER"
}
}
}

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package com.example.myapplication.store
import android.content.Context
import androidx.datastore.core.DataStore
import androidx.datastore.preferences.core.Preferences
import androidx.datastore.preferences.core.edit
import androidx.datastore.preferences.core.stringPreferencesKey
import androidx.datastore.preferences.preferencesDataStore
import kotlinx.coroutines.flow.Flow
import kotlinx.coroutines.flow.map
class PreferencesStore(private val context: Context) {
companion object {
private val Context.dataStore: DataStore<Preferences> by preferencesDataStore("Store")
val UID = stringPreferencesKey("uid")
}
fun getUid(): Flow<String> {
return context.dataStore.data
.map { preferences ->
preferences[UID] ?: ""
}
}
private suspend fun saveStringValue(key: Preferences.Key<String>, value: String) {
context.dataStore.edit { preferences ->
preferences[key] = value
}
}
suspend fun setUid(uid: String) {
saveStringValue(UID, uid)
}
}

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@ -0,0 +1,11 @@
package com.example.myapplication.ui.theme
import androidx.compose.ui.graphics.Color
val Purple80 = Color(0xFFD0BCFF)
val PurpleGrey80 = Color(0xFFCCC2DC)
val Pink80 = Color(0xFFEFB8C8)
val Green = Color(0xFF07B618)
val Grey = Color(0xFF686769)
val Pink40 = Color(0xFF7D5260)

View File

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package com.example.myapplication.ui.theme
import android.app.Activity
import android.os.Build
import androidx.compose.foundation.isSystemInDarkTheme
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.darkColorScheme
import androidx.compose.material3.dynamicDarkColorScheme
import androidx.compose.material3.dynamicLightColorScheme
import androidx.compose.material3.lightColorScheme
import androidx.compose.runtime.Composable
import androidx.compose.runtime.SideEffect
import androidx.compose.ui.graphics.toArgb
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.platform.LocalView
import androidx.core.view.WindowCompat
private val DarkColorScheme = darkColorScheme(
primary = Green,
secondary = Grey,
tertiary = Pink40,
)
private val LightColorScheme = lightColorScheme(
primary = Green,
secondary = Grey,
tertiary = Pink40,
// Other default colors to override
background = Color(0xFFD8E2F1),
surface = Color(0xFFFFFBFE),
onPrimary = Color.White,
onSecondary = Color.White,
onTertiary = Color.White,
onBackground = Color(0xFF1C1B1F),
onSurface = Color(0xFF1C1B1F),
)
@Composable
fun MyApplicationTheme(
darkTheme: Boolean = isSystemInDarkTheme(),
// Dynamic color is available on Android 12+
dynamicColor: Boolean = false,
content: @Composable () -> Unit
) {
val colorScheme = when {
dynamicColor && Build.VERSION.SDK_INT >= Build.VERSION_CODES.S -> {
val context = LocalContext.current
if (darkTheme) dynamicDarkColorScheme(context) else dynamicLightColorScheme(context)
}
darkTheme -> DarkColorScheme
else -> LightColorScheme
}
val view = LocalView.current
if (!view.isInEditMode) {
SideEffect {
val window = (view.context as Activity).window
window.statusBarColor = colorScheme.primary.toArgb()
WindowCompat.getInsetsController(window, view).isAppearanceLightStatusBars = darkTheme
}
}
MaterialTheme(
colorScheme = colorScheme,
typography = Typography,
content = content
)
}

View File

@ -0,0 +1,33 @@
package com.example.myapplication.ui.theme
import androidx.compose.material3.Typography
import androidx.compose.ui.text.TextStyle
import androidx.compose.ui.text.font.FontFamily
import androidx.compose.ui.text.font.FontWeight
import androidx.compose.ui.unit.sp
// Set of Material typography styles to start with
val Typography = Typography(
bodyLarge = TextStyle(
fontFamily = FontFamily.Default,
fontWeight = FontWeight.Normal,
fontSize = 20.sp,
lineHeight = 28.sp,
letterSpacing = 0.5.sp
),
//Other default text styles to override
titleLarge = TextStyle(
fontFamily = FontFamily.Default,
fontWeight = FontWeight.Normal,
fontSize = 32.sp,
lineHeight = 40.sp,
letterSpacing = 0.sp
),
labelLarge = TextStyle(
fontFamily = FontFamily.Default,
fontWeight = FontWeight.Normal,
fontSize = 20.sp,
lineHeight = 28.sp,
letterSpacing = 0.5.sp
)
)

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<?xml version="1.0" encoding="utf-8"?>
<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:width="108dp"
android:height="108dp"
android:viewportWidth="108"
android:viewportHeight="108">
<path
android:fillColor="#3DDC84"
android:pathData="M0,0h108v108h-108z" />
<path
android:fillColor="#00000000"
android:pathData="M9,0L9,108"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M19,0L19,108"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M29,0L29,108"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M39,0L39,108"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M49,0L49,108"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M59,0L59,108"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M69,0L69,108"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M79,0L79,108"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M89,0L89,108"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M99,0L99,108"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M0,9L108,9"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M0,19L108,19"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M0,29L108,29"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M0,39L108,39"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M0,49L108,49"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M0,59L108,59"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M0,69L108,69"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M0,79L108,79"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M0,89L108,89"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M0,99L108,99"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M19,29L89,29"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M19,39L89,39"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M19,49L89,49"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M19,59L89,59"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M19,69L89,69"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M19,79L89,79"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M29,19L29,89"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M39,19L39,89"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M49,19L49,89"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M59,19L59,89"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M69,19L69,89"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M79,19L79,89"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
</vector>

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