Начало 5-ой

Lab5/README.md

@@ -1,9 +1,14 @@
-#### Окружение:
-- nodejs 18;
-- VSCode;
-- ESLint плагин для VSCode;
+### Окружение:
+- [nodejs 20 LTS latest](https://nodejs.org/en/download/);
+- [VSCode](https://code.visualstudio.com/download);
+- [ESLint](https://marketplace.visualstudio.com/items?itemName=dbaeumer.vscode-eslint) плагин для VSCode;
+- [CSS Class Intellisense](https://marketplace.visualstudio.com/items?itemName=Tarrow.css-class-intellisense) плагин для автодополнения CSS-классов в HTML;
 - для отладки необходимы бразузеры Chrome или Edge.
 
+Настройки плагина CSS Class Intellisense находятся в файле ./vscode/cssconfig.json
+
+### Команды
+
 #### Создание пустого проекта:
 
 ```commandline
@@ -16,14 +21,24 @@ npm create vite@latest ./ -- --template react
 npm install
 ```
 
-#### Запуск проекта:
+#### Запуск проекта в режиме разработки (development):
 
 ```commandline
 npm run dev
 ```
 
-#### Сборка проекта:
+#### Запуск проекта в продуктовом режиме (production):
 
 ```commandline
-npm run build
+npm run prod
 ```
+
+### Полезные ссылки
+
+1. Global Object - https://developer.mozilla.org/en-US/docs/Glossary/Global_object
+2. Global Scope - https://developer.mozilla.org/en-US/docs/Glossary/Global_scope
+3. localStorage - https://developer.mozilla.org/en-US/docs/Web/API/Window/localStorage
+4. JavaScript Execution Context – How JS Works Behind The Scenes - https://www.freecodecamp.org/news/execution-context-how-javascript-works-behind-the-scenes/
+5. Extracting State Logic into a Reducer - https://react.dev/learn/extracting-state-logic-into-a-reducer
+6. Passing Data Deeply with Context - https://react.dev/learn/passing-data-deeply-with-context
+7. Scaling Up with Reducer and Context - https://react.dev/learn/scaling-up-with-reducer-and-context

Lab5/jsconfig.json

@@ -5,7 +5,8 @@
         "target": "ES2020",
         "jsx": "react",
         "strictNullChecks": true,
-        "strictFunctionTypes": true
+        "strictFunctionTypes": true,
+        "sourceMap": true
     },
     "exclude": [
         "node_modules",

Lab5/json-server.json

@@ -0,0 +1,5 @@
+{
+    "static": "./node_modules/json-server/public",
+    "port": 8081,
+    "watch": "true"
+}

Lab5/package.json

@@ -1,18 +1,21 @@
 {
-  "name": "ulstu",
+  "name": "lec4",
   "private": true,
   "version": "0.0.0",
   "type": "module",
   "scripts": {
-    "dev": "vite",
-    "build": "vite build",
     "lint": "eslint . --ext js,jsx --report-unused-disable-directives --max-warnings 0",
-    "preview": "vite preview"
+    "rest": "json-server data.json",
+    "vite": "vite",
+    "dev": "npm-run-all --parallel rest vite",
+    "prod": "npm-run-all lint 'vite build' --parallel rest 'vite preview'"
   },
   "dependencies": {
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
     "react-router-dom": "^6.18.0",
+    "react-hot-toast": "^2.4.1",
+    "axios": "^1.6.1",
     "bootstrap": "^5.3.2",
     "react-bootstrap": "^2.9.1",
     "react-bootstrap-icons": "^1.10.3",
@@ -20,13 +23,16 @@
   },
   "devDependencies": {
     "@types/react": "^18.2.15",
-    "@types/react-dom": "^18.2.7",
+    "@types/react-dom": "^18.2.15",
     "@vitejs/plugin-react": "^4.0.3",
     "eslint": "^8.45.0",
     "eslint-config-airbnb-base": "^15.0.0",
+    "eslint-plugin-import": "^2.29.0",
     "eslint-plugin-react": "^7.32.2",
     "eslint-plugin-react-hooks": "^4.6.0",
     "eslint-plugin-react-refresh": "^0.4.3",
+    "json-server": "^0.17.4",
+    "npm-run-all": "^4.1.5",
     "vite": "^4.4.5"
   }
 }

Lab5/public/favicon.svg

@@ -0,0 +1,3 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-cart2" viewBox="0 0 16 16">
+  <path d="M0 2.5A.5.5 0 0 1 .5 2H2a.5.5 0 0 1 .485.379L2.89 4H14.5a.5.5 0 0 1 .485.621l-1.5 6A.5.5 0 0 1 13 11H4a.5.5 0 0 1-.485-.379L1.61 3H.5a.5.5 0 0 1-.5-.5zM3.14 5l1.25 5h8.22l1.25-5H3.14zM5 13a1 1 0 1 0 0 2 1 1 0 0 0 0-2zm-2 1a2 2 0 1 1 4 0 2 2 0 0 1-4 0zm9-1a1 1 0 1 0 0 2 1 1 0 0 0 0-2zm-2 1a2 2 0 1 1 4 0 2 2 0 0 1-4 0z"/>
+</svg>

Lab5/src/App.jsx

@@ -1,19 +1,21 @@
 import PropTypes from 'prop-types';
 import { Container } from 'react-bootstrap';
+import { Toaster } from 'react-hot-toast';
 import { Outlet } from 'react-router-dom';
-import './App.css';
+import { CartProvider } from './components/cart/CartContext.jsx';
 import Footer from './components/footer/Footer.jsx';
 import Navigation from './components/navigation/Navigation.jsx';
 
 const App = ({ routes }) => {
   return (
-    <>
+    <CartProvider>
       <Navigation routes={routes}></Navigation>
-      <Container className='p-2' as="main" fluid>
+      <Container className='p-2' as='main' fluid>
         <Outlet />
       </Container>
       <Footer />
-    </>
+      <Toaster position='top-center' reverseOrder={true} />
+    </CartProvider>
   );
 };
 

Lab5/src/components/api/ApiClient.js

@@ -0,0 +1,40 @@
+import axios from 'axios';
+import toast from 'react-hot-toast';
+
+export class HttpError extends Error {
+    constructor(message = '') {
+        super(message);
+        this.name = 'HttpError';
+        Object.setPrototypeOf(this, new.target.prototype);
+        toast.error(message, { id: 'HttpError' });
+    }
+}
+
+function responseHandler(response) {
+    if (response.status === 200 || response.status === 201) {
+        const data = response?.data;
+        if (!data) {
+            throw new HttpError('API Error. No data!');
+        }
+        return data;
+    }
+    throw new HttpError(`API Error! Invalid status code ${response.status}!`);
+}
+
+function responseErrorHandler(error) {
+    if (error === null) {
+        throw new Error('Unrecoverable error!! Error is null!');
+    }
+    toast.error(error.message, { id: 'AxiosError' });
+    return Promise.reject(error.message);
+}
+
+export const ApiClient = axios.create({
+    baseURL: 'http://localhost:8081/',
+    timeout: '3000',
+    headers: {
+        Accept: 'application/json',
+    },
+});
+
+ApiClient.interceptors.response.use(responseHandler, responseErrorHandler);

Lab5/src/components/api/ApiService.js

@@ -0,0 +1,29 @@
+import { ApiClient } from './ApiClient';
+
+class ApiService {
+    constructor(url) {
+        this.url = url;
+    }
+
+    async getAll(expand) {
+        return ApiClient.get(`${this.url}${expand || ''}`);
+    }
+
+    async get(id, expand) {
+        return ApiClient.get(`${this.url}/${id}${expand || ''}`);
+    }
+
+    async create(body) {
+        return ApiClient.post(this.url, body);
+    }
+
+    async update(id, body) {
+        return ApiClient.put(`${this.url}/${id}`, body);
+    }
+
+    async delete(id) {
+        return ApiClient.delete(`${this.url}/${id}`);
+    }
+}
+
+export default ApiService;

Lab5/src/components/banner/Banner.css

@@ -0,0 +1,25 @@
+#banner {
+    margin: 2px;
+    display: flex;
+    align-items: center;
+    flex-direction: column;
+}
+
+#banner img {
+    border: 1px solid #3c3c3f;
+    border-radius: 5px;
+}
+
+#banner img.banner-show {
+    width: 100%;
+    opacity: 1;
+    transition: opacity 1s, visibility 0s;
+}
+
+#banner img.banner-hide {
+    height: 0;
+    width: 0;
+    opacity: 0;
+    visibility: hidden;
+    transition: opacity 1s, visibility 0s 1s;
+}

Lab5/src/components/banner/Banner.jsx

@@ -0,0 +1,17 @@
+import './Banner.css';
+import useBannerHook from './BannerHook';
+
+const Banner = () => {
+    const { banners, getBannerClass } = useBannerHook();
+
+    return (
+        <div id='banner'>
+            {
+                banners.map((banner, index) =>
+                    <img key={index} className={getBannerClass(index)} src={banner} alt={`banner${index}`} />)
+            }
+        </div >
+    );
+};
+
+export default Banner;

Lab5/src/components/banner/BannerHook.js

@@ -0,0 +1,36 @@
+import { useEffect, useState } from 'react';
+import banner1 from '../../assets/banner1.png';
+import banner2 from '../../assets/banner2.png';
+import banner3 from '../../assets/banner3.png';
+
+const useBannerHook = () => {
+    const [currentBanner, setCurrentBanner] = useState(0);
+    const banners = [banner1, banner2, banner3];
+
+    const getBannerClass = (index) => {
+        return currentBanner === index ? 'banner-show' : 'banner-hide';
+    };
+
+    useEffect(() => {
+        const bannerInterval = setInterval(
+            () => {
+                console.info('Banner changed');
+                let current = currentBanner + 1;
+                if (current === banners.length) {
+                    current = 0;
+                }
+                setCurrentBanner(current);
+            },
+            5000,
+        );
+        return () => clearInterval(bannerInterval);
+        // eslint-disable-next-line react-hooks/exhaustive-deps
+    }, []);
+
+    return {
+        banners,
+        getBannerClass,
+    };
+};
+
+export default useBannerHook;

Lab5/src/components/cart/Cart.css

@@ -0,0 +1,8 @@
+.cart-image {
+    width: 3.1rem;
+    padding: .25rem;
+}
+
+.cart-item {
+    height: auto;
+}

Lab5/src/components/cart/Cart.jsx

@@ -0,0 +1,59 @@
+import { Button, ButtonGroup, Card } from 'react-bootstrap';
+import { DashLg, PlusLg, XLg } from 'react-bootstrap-icons';
+import imgPlaceholder from '../../assets/200.png';
+import './Cart.css';
+import useCart from './CartHook';
+
+const Cart = () => {
+    const {
+        cart,
+        getCartSum,
+        addToCart,
+        removeFromCart,
+        clearCart,
+    } = useCart();
+
+    return (
+        <div className='d-flex flex-column align-items-center'>
+            <div className='mb-2 col-12 col-md-8 col-lg-6 d-flex align-items-center'>
+                <strong className='flex-fill'>Корзина</strong>
+                <Button variant='danger' onClick={() => clearCart()}>
+                    <XLg /> Очистить
+                </Button>
+            </div>
+            {
+                cart.map((cartItem) =>
+                    <Card key={cartItem.id} className='mb-2 col-12 col-md-8 col-lg-6'>
+                        <Card.Body className='p-2 d-flex flex-column flex-sm-row align-items-center'>
+                            <div className='cart-item flex-fill'>
+                                <img className='cart-image' src={cartItem.image || imgPlaceholder} alt="Cart Image" />
+                                {cartItem.type.name}
+                            </div>
+                            <div className='cart-item mt-2 mt-sm-0 d-flex flex-column align-items-center align-items-sm-end'>
+                                <div>
+                                    {cartItem.price}
+                                    {' * '}
+                                    {cartItem.count}
+                                    {' = '}
+                                    {parseFloat(cartItem.price * cartItem.count).toFixed(2)}
+                                </div>
+                                <ButtonGroup className='mt-2 mt-sm-1' aria-label="Cart counter">
+                                    <Button variant="primary" onClick={() => addToCart(cartItem)}>
+                                        <PlusLg />
+                                    </Button>
+                                    <Button variant="danger" onClick={() => removeFromCart(cartItem)}>
+                                        <DashLg />
+                                    </Button>
+                                </ButtonGroup>
+                            </div>
+                        </Card.Body>
+                    </Card>)
+            }
+            <div className='mb-2 col-12 col-md-8 col-lg-6 d-flex justify-content-end'>
+                <strong>Итого: {getCartSum()} &#8381;</strong>
+            </div>
+        </div>
+    );
+};
+
+export default Cart;

Lab5/src/components/cart/CartContext.jsx

@@ -0,0 +1,29 @@
+import PropTypes from 'prop-types';
+import {
+    createContext,
+    useEffect,
+    useReducer,
+} from 'react';
+import { cartReducer, loadCart, saveCart } from './CartReducer';
+
+const CartContext = createContext(null);
+
+export const CartProvider = ({ children }) => {
+    const [cart, dispatch] = useReducer(cartReducer, [], loadCart);
+
+    useEffect(() => {
+        saveCart(cart || []);
+    }, [cart]);
+
+    return (
+        <CartContext.Provider value={{ cart, dispatch }}>
+            {children}
+        </CartContext.Provider>
+    );
+};
+
+CartProvider.propTypes = {
+    children: PropTypes.node,
+};
+
+export default CartContext;

Lab5/src/components/cart/CartHook.js

@@ -0,0 +1,26 @@
+import { useContext } from 'react';
+import CartContext from './CartContext.jsx';
+import { cartAdd, cartClear, cartRemove } from './CartReducer';
+
+const useCart = () => {
+    const { cart, dispatch } = useContext(CartContext);
+
+    const cartSum = () => {
+        return parseFloat(
+            cart?.reduce((sum, cartItem) => {
+                return sum + (cartItem.price * cartItem.count);
+            }, 0)
+            ?? 0,
+        ).toFixed(2);
+    };
+
+    return {
+        cart,
+        getCartSum: () => cartSum(),
+        addToCart: (item) => dispatch(cartAdd(item)),
+        removeFromCart: (item) => dispatch(cartRemove(item)),
+        clearCart: () => dispatch(cartClear()),
+    };
+};
+
+export default useCart;

Lab5/src/components/cart/CartReducer.js

@@ -0,0 +1,71 @@
+const setCartCount = (cart, item, value) => {
+    return cart.map((cartItem) => {
+        if (cartItem.id === item.id) {
+            return { ...cartItem, count: cartItem.count + value };
+        }
+        return cartItem;
+    });
+};
+
+const addToCart = (cart, item) => {
+    const existsItem = cart.find((cartItem) => cartItem.id === item.id);
+    if (existsItem !== undefined) {
+        return setCartCount(cart, item, 1);
+    }
+    return [...cart, { ...item, count: 1 }];
+};
+
+const removeFromCart = (cart, item) => {
+    const existsItem = cart.find((cartItem) => cartItem.id === item.id);
+    if (existsItem !== undefined && existsItem.count > 1) {
+        return setCartCount(cart, item, -1);
+    }
+    return cart.filter((cartItem) => cartItem.id !== item.id);
+};
+
+const CART_KEY = 'localCart';
+const CART_ADD = 'cart/add';
+const CART_REMOVE = 'cart/remove';
+const CART_CLEAR = 'cart/clear';
+
+export const saveCart = (cart) => {
+    localStorage.setItem(CART_KEY, JSON.stringify(cart));
+};
+
+export const loadCart = (initialValue = []) => {
+    const cartData = localStorage.getItem(CART_KEY);
+    if (cartData) {
+        return JSON.parse(cartData);
+    }
+    return initialValue;
+};
+
+export const cartReducer = (cart, action) => {
+    const { item } = action;
+    switch (action.type) {
+        case CART_ADD: {
+            return addToCart(cart, item);
+        }
+        case CART_REMOVE: {
+            return removeFromCart(cart, item);
+        }
+        case CART_CLEAR: {
+            return [];
+        }
+        default: {
+            throw Error(`Unknown action: ${action.type}`);
+        }
+    }
+};
+
+export const cartAdd = (item) => ({
+    type: CART_ADD, item,
+});
+
+export const cartRemove = (item) => ({
+    type: CART_REMOVE, item,
+});
+
+export const cartClear = () => ({
+    type: CART_CLEAR,
+});

Lab5/src/components/footer/Footer.jsx

@@ -1,10 +1,8 @@
 import './Footer.css';
 
 const Footer = () => {
-    // const year = new Date().getFullYear();
-
     return (
-        <footer className="my-footer mt-auto d-flex flex-shrink-0 justify-content-center align-items-center">
+        <footer className='my-footer mt-auto d-flex flex-shrink-0 justify-content-center align-items-center'>
             Адреса: ул. Северный Венец, 32; ул. Андрея Блаженного, 3
         </footer>
     );

Lab5/src/components/input/Input.jsx

@@ -0,0 +1,23 @@
+import PropTypes from 'prop-types';
+import { Form } from 'react-bootstrap';
+
+const Input = ({
+    name, label, value, onChange, className, ...rest
+}) => {
+    return (
+        <Form.Group className={`mb-2 ${className || ''}`} controlId={name}>
+            <Form.Label>{label}</Form.Label>
+            <Form.Control name={name || ''} value={value || ''} onChange={onChange} {...rest} />
+        </Form.Group>
+    );
+};
+
+Input.propTypes = {
+    name: PropTypes.string,
+    label: PropTypes.string,
+    value: PropTypes.string,
+    onChange: PropTypes.func,
+    className: PropTypes.string,
+};
+
+export default Input;

Lab5/src/components/input/Select.jsx

@@ -0,0 +1,29 @@
+import PropTypes from 'prop-types';
+import { Form } from 'react-bootstrap';
+
+const Select = ({
+    values, name, label, value, onChange, className, ...rest
+}) => {
+    return (
+        <Form.Group className={`mb-2 ${className || ''}`} controlId={name}>
+            <Form.Label className='form-label'>{label}</Form.Label>
+            <Form.Select name={name || ''} value={value || ''} onChange={onChange} {...rest}>
+                <option value=''>Выберите значение</option>
+                {
+                    values.map((type) => <option key={type.id} value={type.id}>{type.name}</option>)
+                }
+            </Form.Select>
+        </Form.Group>
+    );
+};
+
+Select.propTypes = {
+    values: PropTypes.array,
+    name: PropTypes.string,
+    label: PropTypes.string,
+    value: PropTypes.string,
+    onChange: PropTypes.func,
+    className: PropTypes.string,
+};
+
+export default Select;

Lab5/src/components/lines/form/LinesForm.jsx

@@ -0,0 +1,48 @@
+import PropTypes from 'prop-types';
+import { Button, Form } from 'react-bootstrap';
+import { useNavigate } from 'react-router-dom';
+import useLinesItemForm from '../hooks/LinesItemFormHook';
+import LinesItemForm from './LinesItemForm.jsx';
+
+const LinesForm = ({ id }) => {
+    const navigate = useNavigate();
+
+    const {
+        item,
+        validated,
+        handleSubmit,
+        handleChange,
+    } = useLinesItemForm(id);
+
+    const onBack = () => {
+        navigate(-1);
+    };
+
+    const onSubmit = async (event) => {
+        if (await handleSubmit(event)) {
+            onBack();
+        }
+    };
+
+    return (
+        <>
+            <Form className='m-0 p-2' noValidate validated={validated} onSubmit={onSubmit}>
+                <LinesItemForm item={item} handleChange={handleChange} />
+                <Form.Group className='row justify-content-center m-0 mt-3'>
+                    <Button className='col-5 col-lg-2 m-0 me-2' variant='secondary' onClick={() => onBack()}>
+                        Назад
+                    </Button>
+                    <Button className='col-5 col-lg-2 m-0 ms-2' type='submit' variant='primary'>
+                        Сохранить
+                    </Button>
+                </Form.Group>
+            </Form>
+        </>
+    );
+};
+
+LinesForm.propTypes = {
+    id: PropTypes.string,
+};
+
+export default LinesForm;

Lab5/src/components/lines/form/LinesItemForm.css

@@ -0,0 +1,3 @@
+#image-preview {
+    width: 200px;
+}

Lab5/src/components/lines/form/LinesItemForm.jsx

@@ -0,0 +1,34 @@
+import PropTypes from 'prop-types';
+import imgPlaceholder from '../../../assets/200.png';
+import Input from '../../input/Input.jsx';
+import Select from '../../input/Select.jsx';
+import useTypes from '../../types/hooks/TypesHook';
+import './LinesItemForm.css';
+
+const LinesItemForm = ({ item, handleChange }) => {
+    const { types } = useTypes();
+
+    return (
+        <>
+            <div className='text-center'>
+                <img id='image-preview' className='rounded' alt='placeholder'
+                    src={item.image || imgPlaceholder} />
+            </div>
+            <Select values={types} name='typeId' label='Товары' value={item.typeId} onChange={handleChange}
+                required />
+            <Input name='price' label='Цена' value={item.price} onChange={handleChange}
+                type='number' min='1000.0' step='0.50' required />
+            <Input name='count' label='Количество' value={item.count} onChange={handleChange}
+                type='number' min='1' step='1' required />
+            <Input name='image' label='Изображение' onChange={handleChange}
+                type='file' accept='image/*' />
+        </>
+    );
+};
+
+LinesItemForm.propTypes = {
+    item: PropTypes.object,
+    handleChange: PropTypes.func,
+};
+
+export default LinesItemForm;

Lab5/src/components/lines/hooks/LinesDeleteModalHook.js

@@ -0,0 +1,34 @@
+import { useState } from 'react';
+import toast from 'react-hot-toast';
+import useModal from '../../modal/ModalHook';
+import LinesApiService from '../service/LinesApiService';
+
+const useLinesDeleteModal = (linesChangeHandle) => {
+    const { isModalShow, showModal, hideModal } = useModal();
+    const [currentId, setCurrentId] = useState(0);
+
+    const showModalDialog = (id) => {
+        showModal();
+        setCurrentId(id);
+    };
+
+    const onClose = () => {
+        hideModal();
+    };
+
+    const onDelete = async () => {
+        await LinesApiService.delete(currentId);
+        linesChangeHandle();
+        toast.success('Элемент успешно удален', { id: 'LinesTable' });
+        onClose();
+    };
+
+    return {
+        isDeleteModalShow: isModalShow,
+        showDeleteModal: showModalDialog,
+        handleDeleteConfirm: onDelete,
+        handleDeleteCancel: onClose,
+    };
+};
+
+export default useLinesDeleteModal;

Lab5/src/components/lines/hooks/LinesFilterHook.js

@@ -0,0 +1,28 @@
+import { useSearchParams } from 'react-router-dom';
+import useTypes from '../../types/hooks/TypesHook';
+
+const useTypeFilter = () => {
+    const filterName = 'type';
+
+    const [searchParams, setSearchParams] = useSearchParams();
+
+    const { types } = useTypes();
+
+    const handleFilterChange = (event) => {
+        const type = event.target.value;
+        if (type) {
+            searchParams.set(filterName, event.target.value);
+        } else {
+            searchParams.delete(filterName);
+        }
+        setSearchParams(searchParams);
+    };
+
+    return {
+        types,
+        currentFilter: searchParams.get(filterName) || '',
+        handleFilterChange,
+    };
+};
+
+export default useTypeFilter;

Lab5/src/components/lines/hooks/LinesFormModalHook.js

@@ -0,0 +1,45 @@
+import { useState } from 'react';
+import useModal from '../../modal/ModalHook';
+import useLinesItemForm from './LinesItemFormHook';
+
+const useLinesFormModal = (linesChangeHandle) => {
+    const { isModalShow, showModal, hideModal } = useModal();
+    const [currentId, setCurrentId] = useState(0);
+
+    const {
+        item,
+        validated,
+        handleSubmit,
+        handleChange,
+        resetValidity,
+    } = useLinesItemForm(currentId, linesChangeHandle);
+
+    const showModalDialog = (id) => {
+        setCurrentId(id);
+        resetValidity();
+        showModal();
+    };
+
+    const onClose = () => {
+        setCurrentId(-1);
+        hideModal();
+    };
+
+    const onSubmit = async (event) => {
+        if (await handleSubmit(event)) {
+            onClose();
+        }
+    };
+
+    return {
+        isFormModalShow: isModalShow,
+        isFormValidated: validated,
+        showFormModal: showModalDialog,
+        currentItem: item,
+        handleItemChange: handleChange,
+        handleFormSubmit: onSubmit,
+        handleFormClose: onClose,
+    };
+};
+
+export default useLinesFormModal;

Lab5/src/components/lines/hooks/LinesHook.js

@@ -0,0 +1,29 @@
+import { useEffect, useState } from 'react';
+import LinesApiService from '../service/LinesApiService';
+
+const useLines = (typeFilter) => {
+    const [linesRefresh, setLinesRefresh] = useState(false);
+    const [lines, setLines] = useState([]);
+    const handleLinesChange = () => setLinesRefresh(!linesRefresh);
+
+    const getLines = async () => {
+        let expand = '?_expand=type';
+        if (typeFilter) {
+            expand = `${expand}&typeId=${typeFilter}`;
+        }
+        const data = await LinesApiService.getAll(expand);
+        setLines(data ?? []);
+    };
+
+    useEffect(() => {
+        getLines();
+        // eslint-disable-next-line react-hooks/exhaustive-deps
+    }, [linesRefresh, typeFilter]);
+
+    return {
+        lines,
+        handleLinesChange,
+    };
+};
+
+export default useLines;

Lab5/src/components/lines/hooks/LinesItemFormHook.js

@@ -0,0 +1,81 @@
+import { useState } from 'react';
+import toast from 'react-hot-toast';
+import getBase64FromFile from '../../utils/Base64';
+import LinesApiService from '../service/LinesApiService';
+import useLinesItem from './LinesItemHook';
+
+const useLinesItemForm = (id, linesChangeHandle) => {
+    const { item, setItem } = useLinesItem(id);
+
+    const [validated, setValidated] = useState(false);
+
+    const resetValidity = () => {
+        setValidated(false);
+    };
+
+    const getLineObject = (formData) => {
+        const typeId = parseInt(formData.typeId, 10);
+        const price = parseFloat(formData.price).toFixed(2);
+        const count = parseInt(formData.count, 10);
+        const sum = parseFloat(price * count).toFixed(2);
+        const image = formData.image.startsWith('data:image') ? formData.image : '';
+        return {
+            typeId: typeId.toString(),
+            price: price.toString(),
+            count: count.toString(),
+            sum: sum.toString(),
+            image,
+        };
+    };
+
+    const handleImageChange = async (event) => {
+        const { files } = event.target;
+        const file = await getBase64FromFile(files.item(0));
+        setItem({
+            ...item,
+            image: file,
+        });
+    };
+
+    const handleChange = (event) => {
+        if (event.target.type === 'file') {
+            handleImageChange(event);
+            return;
+        }
+        const inputName = event.target.name;
+        const inputValue = event.target.type === 'checkbox' ? event.target.checked : event.target.value;
+        setItem({
+            ...item,
+            [inputName]: inputValue,
+        });
+    };
+
+    const handleSubmit = async (event) => {
+        const form = event.currentTarget;
+        event.preventDefault();
+        event.stopPropagation();
+        const body = getLineObject(item);
+        if (form.checkValidity()) {
+            if (id === undefined) {
+                await LinesApiService.create(body);
+            } else {
+                await LinesApiService.update(id, body);
+            }
+            if (linesChangeHandle) linesChangeHandle();
+            toast.success('Элемент успешно сохранен', { id: 'LinesTable' });
+            return true;
+        }
+        setValidated(true);
+        return false;
+    };
+
+    return {
+        item,
+        validated,
+        handleSubmit,
+        handleChange,
+        resetValidity,
+    };
+};
+
+export default useLinesItemForm;

Lab5/src/components/lines/hooks/LinesItemHook.js

@@ -0,0 +1,34 @@
+import { useEffect, useState } from 'react';
+import LinesApiService from '../service/LinesApiService';
+
+const useLinesItem = (id) => {
+    const emptyItem = {
+        id: '',
+        typeId: '',
+        price: '0',
+        count: '0',
+        image: '',
+    };
+    const [item, setItem] = useState({ ...emptyItem });
+
+    const getItem = async (itemId = undefined) => {
+        if (itemId && itemId > 0) {
+            const data = await LinesApiService.get(itemId);
+            setItem(data);
+        } else {
+            setItem({ ...emptyItem });
+        }
+    };
+
+    useEffect(() => {
+        getItem(id);
+        // eslint-disable-next-line react-hooks/exhaustive-deps
+    }, [id]);
+
+    return {
+        item,
+        setItem,
+    };
+};
+
+export default useLinesItem;

Lab5/src/components/lines/service/LinesApiService.js

@@ -0,0 +1,5 @@
+import ApiService from '../../api/ApiService';
+
+const LinesApiService = new ApiService('lines');
+
+export default LinesApiService;

Lab5/src/components/lines/table/Lines.jsx

@@ -0,0 +1,81 @@
+import { Button, ButtonGroup } from 'react-bootstrap';
+import { Link, useNavigate } from 'react-router-dom';
+import useCart from '../../cart/CartHook';
+import Select from '../../input/Select.jsx';
+import ModalConfirm from '../../modal/ModalConfirm.jsx';
+import ModalForm from '../../modal/ModalForm.jsx';
+import LinesItemForm from '../form/LinesItemForm.jsx';
+import useLinesDeleteModal from '../hooks/LinesDeleteModalHook';
+import useTypeFilter from '../hooks/LinesFilterHook';
+import useLinesFormModal from '../hooks/LinesFormModalHook';
+import useLines from '../hooks/LinesHook';
+import LinesTable from './LinesTable.jsx';
+import LinesTableRow from './LinesTableRow.jsx';
+
+const Lines = () => {
+    const { types, currentFilter, handleFilterChange } = useTypeFilter();
+
+    const { lines, handleLinesChange } = useLines(currentFilter);
+
+    const {
+        isDeleteModalShow,
+        showDeleteModal,
+        handleDeleteConfirm,
+        handleDeleteCancel,
+    } = useLinesDeleteModal(handleLinesChange);
+
+    const {
+        isFormModalShow,
+        isFormValidated,
+        showFormModal,
+        currentItem,
+        handleItemChange,
+        handleFormSubmit,
+        handleFormClose,
+    } = useLinesFormModal(handleLinesChange);
+
+    const navigate = useNavigate();
+
+    const showEditPage = (id) => {
+        navigate(`/page-edit/${id}`);
+    };
+
+    const { addToCart } = useCart();
+
+    return (
+        <>
+            <ButtonGroup>
+                <Button variant='info' onClick={() => showFormModal()}>
+                    Добавить товар (диалог)
+                </Button>
+                <Button as={Link} to='/page-edit' variant='success'>
+                    Добавить товар (страница)
+                </Button>
+            </ButtonGroup>
+            <Select className='mt-2' values={types} label='Фильтр по товарам'
+                value={currentFilter} onChange={handleFilterChange} />
+            <LinesTable>
+                {
+                    lines.map((line, index) =>
+                        <LinesTableRow key={line.id}
+                            index={index} line={line}
+                            onAddCart={() => addToCart(line)}
+                            onDelete={() => showDeleteModal(line.id)}
+                            onEdit={() => showFormModal(line.id)}
+                            onEditInPage={() => showEditPage(line.id)}
+                        />)
+                }
+            </LinesTable>
+            <ModalConfirm show={isDeleteModalShow}
+                onConfirm={handleDeleteConfirm} onClose={handleDeleteCancel}
+                title='Удаление' message='Удалить элемент?' />
+            <ModalForm show={isFormModalShow} validated={isFormValidated}
+                onSubmit={handleFormSubmit} onClose={handleFormClose}
+                title='Редактирование'>
+                <LinesItemForm item={currentItem} handleChange={handleItemChange} />
+            </ModalForm>
+        </>
+    );
+};
+
+export default Lines;

Lab5/src/components/lines/table/LinesTable.jsx

@@ -0,0 +1,31 @@
+import PropTypes from 'prop-types';
+import { Table } from 'react-bootstrap';
+
+const LinesTable = ({ children }) => {
+    return (
+        <Table className='mt-2' striped responsive>
+            <thead>
+                <tr>
+                    <th scope='col'>№</th>
+                    <th scope='col' className='w-25'>Товар</th>
+                    <th scope='col' className='w-25'>Цена</th>
+                    <th scope='col' className='w-25'>Колич.</th>
+                    <th scope='col' className='w-25'>Сумма</th>
+                    <th scope='col'></th>
+                    <th scope='col'></th>
+                    <th scope='col'></th>
+                    <th scope='col'></th>
+                </tr>
+            </thead>
+            <tbody>
+                {children}
+            </tbody >
+        </Table >
+    );
+};
+
+LinesTable.propTypes = {
+    children: PropTypes.node,
+};
+
+export default LinesTable;

Lab5/src/components/lines/table/LinesTableRow.jsx

@@ -0,0 +1,38 @@
+import PropTypes from 'prop-types';
+import {
+    Cart, PencilFill, PencilSquare, Trash3,
+} from 'react-bootstrap-icons';
+
+const LinesTableRow = ({
+    index, line, onAddCart, onDelete, onEdit, onEditInPage,
+}) => {
+    const handleAnchorClick = (event, action) => {
+        event.preventDefault();
+        action();
+    };
+
+    return (
+        <tr>
+            <th scope="row">{index + 1}</th>
+            <td>{line.type.name}</td>
+            <td>{parseFloat(line.price).toFixed(2)}</td>
+            <td>{line.count}</td>
+            <td>{parseFloat(line.sum).toFixed(2)}</td>
+            <td><a href="#" onClick={(event) => handleAnchorClick(event, onAddCart)}><Cart /></a></td>
+            <td><a href="#" onClick={(event) => handleAnchorClick(event, onEdit)}><PencilFill /></a></td>
+            <td><a href="#" onClick={(event) => handleAnchorClick(event, onEditInPage)}><PencilSquare /></a></td>
+            <td><a href="#" onClick={(event) => handleAnchorClick(event, onDelete)}><Trash3 /></a></td>
+        </tr>
+    );
+};
+
+LinesTableRow.propTypes = {
+    index: PropTypes.number,
+    line: PropTypes.object,
+    onAddCart: PropTypes.func,
+    onDelete: PropTypes.func,
+    onEdit: PropTypes.func,
+    onEditInPage: PropTypes.func,
+};
+
+export default LinesTableRow;

Lab5/src/components/modal/Modal.css

@@ -0,0 +1,3 @@
+.modal-title {
+    font-size: 1.2rem;
+}

Lab5/src/components/modal/ModalConfirm.jsx

@@ -0,0 +1,42 @@
+import PropTypes from 'prop-types';
+import { Button, Modal } from 'react-bootstrap';
+import { createPortal } from 'react-dom';
+import './Modal.css';
+
+const ModalConfirm = ({
+    show, title, message, onConfirm, onClose,
+}) => {
+    return createPortal(
+        <Modal show={show} backdrop='static' onHide={() => onClose()}>
+            <Modal.Header className='pt-2 pb-2 ps-3 pe-3' closeButton>
+                <Modal.Title>{title}</Modal.Title>
+            </Modal.Header>
+
+            <Modal.Body>
+                {message}
+            </Modal.Body>
+
+            <Modal.Footer className='m-0 pt-2 pb-2 ps-3 pe-3 row justify-content-center'>
+                <Button variant='secondary' className='col-5 m-0 me-2'
+                    onClick={() => onClose()}>
+                    Нет
+                </Button>
+                <Button variant='primary' className='col-5 m-0 ms-2'
+                    onClick={() => onConfirm()}>
+                    Да
+                </Button>
+            </Modal.Footer>
+        </Modal>,
+        document.body,
+    );
+};
+
+ModalConfirm.propTypes = {
+    show: PropTypes.bool,
+    title: PropTypes.string,
+    message: PropTypes.string,
+    onConfirm: PropTypes.func,
+    onClose: PropTypes.func,
+};
+
+export default ModalConfirm;

Lab5/src/components/modal/ModalForm.jsx

@@ -0,0 +1,43 @@
+import PropTypes from 'prop-types';
+import { Button, Form, Modal } from 'react-bootstrap';
+import { createPortal } from 'react-dom';
+import './Modal.css';
+
+const ModalForm = ({
+    show, title, validated, onSubmit, onClose, children,
+}) => {
+    return createPortal(
+        <Modal show={show} backdrop='static' onHide={() => onClose()}>
+            <Modal.Header className='pt-2 pb-2 ps-3 pe-3' closeButton>
+                <Modal.Title>{title}</Modal.Title>
+            </Modal.Header>
+            <Form className='m-0' noValidate validated={validated} onSubmit={onSubmit}>
+                <Modal.Body>
+                    {children}
+                </Modal.Body>
+
+                <Modal.Footer className='m-0 pt-2 pb-2 ps-3 pe-3 row justify-content-center'>
+                    <Button variant='secondary' className='col-5 m-0 me-2'
+                        onClick={() => onClose()}>
+                        Отмена
+                    </Button>
+                    <Button variant='primary' className='col-5 m-0 ms-2' type='submit'>
+                        Сохранить
+                    </Button>
+                </Modal.Footer>
+            </Form>
+        </Modal>,
+        document.body,
+    );
+};
+
+ModalForm.propTypes = {
+    show: PropTypes.bool,
+    title: PropTypes.string,
+    validated: PropTypes.bool,
+    onSubmit: PropTypes.func,
+    onClose: PropTypes.func,
+    children: PropTypes.node,
+};
+
+export default ModalForm;

Lab5/src/components/modal/ModalHook.js

@@ -0,0 +1,21 @@
+import { useState } from 'react';
+
+const useModal = () => {
+    const [showModal, setShowModal] = useState(false);
+
+    const showModalDialog = () => {
+        setShowModal(true);
+    };
+
+    const hideModalDialog = () => {
+        setShowModal(false);
+    };
+
+    return {
+        isModalShow: showModal,
+        showModal: showModalDialog,
+        hideModal: hideModalDialog,
+    };
+};
+
+export default useModal;

Lab5/src/components/navigation/Navigation.css

@@ -3,7 +3,7 @@
 }
 
 .my-navbar .link a:hover {
-    text-decoration: underline !important;
+    text-decoration: underline;
 }
 
 .my-navbar .logo {

Lab5/src/components/navigation/Navigation.jsx

@@ -1,18 +1,21 @@
 import PropTypes from 'prop-types';
 import {
- Image, Container, Nav, Navbar,
+ Container, Nav, Navbar, Image,
 } from 'react-bootstrap';
+import { Cart2 } from 'react-bootstrap-icons';
 import { Link, useLocation } from 'react-router-dom';
+import useCart from '../cart/CartHook';
 import './Navigation.css';
 
 const Navigation = ({ routes }) => {
+    const { getCartSum } = useCart();
     const location = useLocation();
     const indexPageLink = routes.filter((route) => route.index === false).shift();
     const pages = routes.filter((route) => Object.prototype.hasOwnProperty.call(route, 'title'));
 
     return (
         <header>
-            <Navbar expand='md' bg='dark' data-bs-theme='dark' className='my-navbar'>
+            <Navbar expand='md' data-bs-theme='dark' className='my-navbar'>
                 <Container fluid>
                     <Navbar.Brand as={Link} to={indexPageLink?.path ?? '/'}>
                         <Image src="./images/logo2.png" className='d-inline-block align-top me-1 logo' />
@@ -27,6 +30,11 @@ const Navigation = ({ routes }) => {
                                     </Nav.Link>)
                             }
                         </Nav>
+                        <Nav>
+                            <Navbar.Brand as={Link} to='/cart'>
+                                <Cart2 className='d-inline-block align-top me-1 logo' /> {getCartSum() ?? ''} &#8381;
+                            </Navbar.Brand>
+                        </Nav>
                     </Navbar.Collapse>
                 </Container>
             </Navbar >

Lab5/src/components/types/hooks/TypesHook.js

@@ -0,0 +1,21 @@
+import { useEffect, useState } from 'react';
+import TypesApiService from '../service/TypesApiService';
+
+const useTypes = () => {
+    const [types, setTypes] = useState([]);
+
+    const getTypes = async () => {
+        const data = await TypesApiService.getAll();
+        setTypes(data ?? []);
+    };
+
+    useEffect(() => {
+        getTypes();
+    }, []);
+
+    return {
+        types,
+    };
+};
+
+export default useTypes;

Lab5/src/components/types/service/TypesApiService.js

@@ -0,0 +1,5 @@
+import ApiService from '../../api/ApiService';
+
+const TypesApiService = new ApiService('types');
+
+export default TypesApiService;

Lab5/src/components/utils/Base64.js

@@ -0,0 +1,15 @@
+const getBase64FromFile = async (file) => {
+    const reader = new FileReader();
+    return new Promise((resolve, reject) => {
+        reader.onloadend = () => {
+            const fileContent = reader.result;
+            resolve(fileContent);
+        };
+        reader.onerror = () => {
+            reject(new Error('Oops, something went wrong with the file reader.'));
+        };
+        reader.readAsDataURL(file);
+    });
+};
+
+export default getBase64FromFile;

Lab5/src/index.css

@@ -9,34 +9,6 @@ h2 {
 h3 {
     font-size: 1.1em;
 }
-
-.btn-mw {
-    width: 100%;
-}
-
-@media (min-width: 768px) {
-    .btn-mw {
-        width: 30%;
-    }
-}
-
-@media (min-width: 1200px) {
-    .btn-mw {
-        width: 20%;
-    }
-}
-.body{
-    display: flex;
-    flex-direction: column;
-    min-height: 100hv;
-}
-.stsp{
-    font-size: 30px;
-    color: #333333;
-    text-align: center;
-    margin-top: 70;
-}
-
 .mainSt{
     color: #060647;
     font-size: 50px;
@@ -116,3 +88,9 @@ h3 {
     border-radius: 21px;
     border: 3px #2582A3 solid;
 }
+.stsp{
+    font-size: 30px;
+    color: #333333;
+    text-align: center;
+    margin-top: 70;
+}

Lab5/src/main.jsx

@@ -10,30 +10,30 @@ import Page2 from './pages/Page2.jsx';
 import Page3 from './pages/Page3.jsx';
 import Page4 from './pages/Page4.jsx';
 import Page5 from './pages/Page5.jsx';
-import Admin from './pages/Admin.jsx';
 import Reduse from './pages/Reduse.jsx';
+import Admin from './pages/Admin.jsx';
 
 const routes = [
   {
     index: true,
     path: '/',
     element: <Page1 />,
-    title: 'Новости',
+    title: 'Главная страница',
   },
   {
     path: '/page2',
     element: <Page2 />,
-    title: 'Об университете',
+    title: 'Вторая страница',
   },
   {
     path: '/page3',
     element: <Page3 />,
-    title: 'Абитуриенту',
+    title: 'Третья страница',
   },
   {
     path: '/page4',
     element: <Page4 />,
-    title: 'Вход',
+    title: 'Четвертая страница',
   },
   {
     path: '/page5',

Lab5/src/pages/CartPage.jsx

@@ -0,0 +1,9 @@
+import Cart from '../components/cart/Cart.jsx';
+
+const CartPage = () => {
+    return (
+        <Cart />
+    );
+};
+
+export default CartPage;

Lab5/src/pages/ErrorPage.jsx

@@ -1,17 +1,18 @@
 import { Alert, Button, Container } from 'react-bootstrap';
-import { useNavigate } from 'react-router-dom';
+import { useNavigate, useRouteError } from 'react-router-dom';
 
 const ErrorPage = () => {
     const navigate = useNavigate();
+    const error = useRouteError();
 
     return (
-        <Container fluid className="p-2 row justify-content-center">
-            <Container className='col-md-6'>
-                <Alert variant="danger">
-                    Страница не найдена
-                </Alert>
-                <Button className="w-25 mt-2" variant="primary" onClick={() => navigate(-1)}>Назад</Button>
-            </Container>
+        <Container fluid className='m-0 p-3 row justify-content-center'>
+            <Alert className='col-12 col-lg-6' variant='danger'>
+                {error?.message ?? 'Страница не найдена'}
+            </Alert>
+            <div className='w-100'></div>
+            <Button className='col-12 col-lg-6' variant='primary'
+                onClick={() => navigate(-1)}>Назад</Button>
         </Container>
     );
 };

Lab5/src/pages/Page1.jsx

@@ -1,7 +1,7 @@
 import { Link } from 'react-router-dom';
 import {
- Container, Button, Row, Col, Image,
-} from 'react-bootstrap';
+    Container, Button, Row, Col, Image,
+   } from 'react-bootstrap';
 
 const Page1 = () => {
     return (

Lab5/src/pages/Page3.jsx

@@ -1,48 +1,115 @@
-const Page3 = () => {
-    return (
-        <main className="container p-2 text-center">
-            <label className="mainSt d-flex justify-content-center" htmlFor="direction">
-                Направление
-            </label>
-            <input className="justify-content-md-center w-50"
-                type="search"
-                id="direction"
-                name="direction"
-                required />
+import { useState } from 'react';
+import { Button, Form } from 'react-bootstrap';
 
-            <div className="tbb1 p-3 table-responsive-md mt-4 row justify-content-start">
-                <table className="table col-lg2 w-50 mx-auto">
-                    <thead>
-                        <tr>
-                            <th className="w-25">Код</th>
-                            <th className="w-50">Направление</th>
-                            <th className="w-25">Кафедра</th>
-                            <th className="w-75">Предметы(ЕГЭ) по выбору</th>
-                        </tr>
-                    </thead>
-                    <tbody>
-                        <tr>
-                            <td>01.03.04</td>
-                            <td>Мат. Моделирование</td>
-                            <td>Прикладная математика</td>
-                            <td>Иностранный язык, информатика, физика, химия</td>
-                        </tr>
-                        <tr>
-                            <td>09.03.04</td>
-                            <td>Программная инженерия</td>
-                            <td>Информационные системы</td>
-                            <td>Информатика, физика</td>
-                        </tr>
-                        <tr>
-                            <td>02.03.01</td>
-                            <td>Информационные системы и технологии</td>
-                            <td>Измерительно-вычислительные комплексы</td>
-                            <td>Информатика, физика</td>
-                        </tr>
-                    </tbody>
-                </table>
-            </div>
-        </main>
+const Page3 = () => {
+    const someValue = 'Некоторое значение';
+    const [validated, setValidated] = useState(false);
+    const [formData, setFormData] = useState({
+        lastname: '',
+        firstname: '',
+        email: '',
+        password: '',
+        date: '',
+        disabled: someValue,
+        readonly: someValue,
+        color: '#ff0055',
+        checkbox1: false,
+        checkbox2: false,
+        radio1: false,
+        radio2: false,
+        selected: '',
+    });
+
+    const handleSubmit = (event) => {
+        const form = event.currentTarget;
+        event.preventDefault();
+        event.stopPropagation();
+        if (form.checkValidity() !== false) {
+            console.log(formData);
+        }
+        setValidated(true);
+    };
+
+    const handleChange = (event) => {
+        const inputName = event.target.name;
+        const inputValue = event.target.type === 'checkbox' ? event.target.checked : event.target.value;
+        setFormData({
+            ...formData,
+            [inputName]: inputValue,
+        });
+    };
+
+    return (
+        <div className='row justify-content-center'>
+            <Form className='col-md-6 m-0' noValidate validated={validated} onSubmit={handleSubmit}>
+                <Form.Group className='mb-2' controlId='lastname'>
+                    <Form.Label>Фамилия</Form.Label>
+                    <Form.Control type='text' name='lastname' required
+                        value={formData.lastname} onChange={handleChange} />
+                    <Form.Control.Feedback>Фамилия заполнена</Form.Control.Feedback>
+                    <Form.Control.Feedback type='invalid'>Фамилия не заполнена</Form.Control.Feedback>
+                </Form.Group>
+                <Form.Group className='mb-2' controlId='firstname'>
+                    <Form.Label>Имя</Form.Label>
+                    <Form.Control type='text' name='firstname' required
+                        value={formData.firstname} onChange={handleChange} />
+                </Form.Group>
+                <Form.Group className='mb-2' controlId='email'>
+                    <Form.Label>E-mail</Form.Label>
+                    <Form.Control type='email' name='email' placeholder='name@example.ru' required
+                        value={formData.email} onChange={handleChange} />
+                </Form.Group>
+                <Form.Group className='mb-2' controlId='password'>
+                    <Form.Label>Пароль</Form.Label>
+                    <Form.Control type='password' name='password' required
+                        value={formData.password} onChange={handleChange} />
+                </Form.Group>
+                <Form.Group className='mb-2' controlId='date'>
+                    <Form.Label>Дата</Form.Label>
+                    <Form.Control type='date' name='date' required
+                        value={formData.date} onChange={handleChange} />
+                </Form.Group>
+                <Form.Group className='mb-2' controlId='disabled'>
+                    <Form.Label>Выключенный компонент</Form.Label>
+                    <Form.Control type='text' name='disabled' disabled
+                        value={formData.disabled} onChange={handleChange} />
+                </Form.Group>
+                <Form.Group className='mb-2' controlId='readonly'>
+                    <Form.Label>Компонент только для чтения</Form.Label>
+                    <Form.Control type='text' name='readonly' readOnly
+                        value={formData.readonly} onChange={handleChange} />
+                </Form.Group>
+                <Form.Group className='mb-2' controlId='color'>
+                    <Form.Label>Выбор цвета</Form.Label>
+                    <Form.Control type='color' name='color'
+                        value={formData.color} onChange={handleChange} />
+                </Form.Group>
+                <Form.Group className='mb-2 d-md-flex flex-md-row'>
+                    <Form.Check className='me-md-3' type='checkbox' name='checkbox1' label='Флажок 1'
+                        value={formData.checkbox1} onChange={handleChange} />
+                    <Form.Check className='me-md-3' type='checkbox' name='checkbox2' label='Флажок 2'
+                        value={formData.checkbox2} onChange={handleChange} />
+                </Form.Group>
+                <Form.Group className='mb-2 d-md-flex flex-md-row'>
+                    <Form.Check className='me-md-3' type='radio' name='radio1' label='Переключатель 1'
+                        value={formData.radio1} onChange={handleChange} />
+                    <Form.Check className='me-md-3' type='switch' name='radio2' label='Переключатель 2'
+                        value={formData.radio2} onChange={handleChange} />
+                </Form.Group>
+                <Form.Group className='mb-2'>
+                    <Form.Select name='selected' required
+                        value={formData.selected} onChange={handleChange}>
+                        <option value=''>Выберите значение</option>
+                        <option value='1'>Один</option>
+                        <option value='2'>Два</option>
+                        <option value='3'>Три</option>
+                    </Form.Select>
+                </Form.Group>
+                <div className='text-center'>
+                    <Button className='w-50' variant='primary' type='submit'>Отправить</Button>
+                </div>
+            </Form>
+        </div>
     );
 };
 

Lab5/src/pages/Page4.jsx

@@ -1,26 +1,8 @@
+import Lines from '../components/lines/table/Lines.jsx';
+
 const Page4 = () => {
     return (
-        <main className="container-fluid text-center">
-            <span className="mainSt">
-                <b>Личный кабинет</b>
-            </span>
-            <div className="rectpage4 d-flex row justify-content-center">
-                <form className="col-md-4 m-0 w-auto" action="./page4.html" method="get">
-                    <div className="mb-2">
-                        <label className="form-label" htmlFor="login"><b>Логин</b></label>
-                        <input id="login" name="login" className="form-control"
-                        placeholder="dyctator" type="text" required />
-                    </div>
-                    <div className="mb-2">
-                        <label className="form-label" htmlFor="password"><b>Пароль</b></label>
-                        <input id="password" name="password" className="form-control" type="password" required />
-                    </div>
-                    <div className="text-center">
-                        <button className="btn btn-primary w-auto" type="button">Войти</button>
-                    </div>
-                </form>
-            </div>
-        </main>
+        <Lines />
     );
 };
 

Lab5/test.html

@@ -0,0 +1,51 @@
+<!DOCTYPE html>
+<html lang="ru">
+
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Stateful app</title>
+    <link rel="stylesheet" href="./node_modules/bootstrap/dist/css/bootstrap.css">
+</head>
+
+<body class="container-fluid p-2 col-12 col-md-8 col-lg-6">
+    <div class="card text-center mb-2">
+        <div class="card-title">
+            Переменная в глобальном контексте
+        </div>
+        <div class="card-body">
+            <div class="card-text" id="gc-content"></div>
+            <button class="btn btn-primary col-6 mt-2" onclick="updateGcContent(1)">Up</button>
+        </div>
+    </div>
+    <div class="card text-center">
+        <div class="card-title">
+            Переменная в хранилище
+        </div>
+        <div class="card-body">
+            <div class="card-text" id="ls-content"></div>
+            <button class="btn btn-primary col-6 mt-2" onclick="updateLsContent(1)">Up</button>
+        </div>
+    </div>
+</body>
+<script>
+    document.addEventListener('DOMContentLoaded', () => {
+        updateGcContent();
+        updateLsContent();
+    });
+
+    const updateGcContent = (value = 0) => {
+        const newState = (globalThis.myAppState || 0) + value;
+        globalThis.myAppState = newState;
+        document.getElementById('gc-content').innerText = newState;
+    }
+
+    const updateLsContent = (value = 0) => {
+        const lsKey = 'state';
+        const newState = parseInt(localStorage.getItem(lsKey) || 0) + value;
+        localStorage.setItem(lsKey, newState);
+        document.getElementById('ls-content').innerText = newState;
+    }
+</script>
+
+</html>