Exercicios md03/25.3

Md03_Dev_Back_end/Bloco25/25.3/express-typescript/dist/index.js

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+"use strict";
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+const express_1 = __importDefault(require("express"));
+require("express-async-errors");
+const books_routes_1 = __importDefault(require("./routes/books.routes"));
+const statusCodes_1 = __importDefault(require("./statusCodes"));
+const app = (0, express_1.default)();
+app.use(express_1.default.json());
+const PORT = 8000;
+app.get('/', (_req, res) => {
+    res.status(statusCodes_1.default.OK).send('Express + TypeScript');
+});
+app.use(books_routes_1.default);
+app.use((err, _req, res, next) => {
+    const { name, message, details } = err;
+    console.log(`name: ${name}`);
+    switch (name) {
+        case 'BadRequestError':
+            res.status(400).json({ message });
+            break;
+        case 'ValidationError':
+            res.status(400).json({ message: details[0].message });
+            break;
+        case 'NotFoundError':
+            res.status(404).json({ message });
+            break;
+        case 'ConflictError':
+            res.status(409).json({ message });
+            break;
+        default:
+            console.error(err);
+            res.sendStatus(500);
+    }
+    next();
+});
+app.listen(PORT, () => console.log(`Server is running at http://localhost:${PORT}`));

Md03_Dev_Back_end/Bloco25/25.3/express-typescript/dist/interfaces/book.interface.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });

Md03_Dev_Back_end/Bloco25/25.3/express-typescript/dist/routes/books.routes.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const express_1 = require("express");
+const bookRouter = (0, express_1.Router)();
+exports.default = bookRouter;

Md03_Dev_Back_end/Bloco25/25.3/express-typescript/dist/statusCodes.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+// ./statusCodes.ts
+const statusCodes = {
+    OK: 200,
+    NOT_FOUND: 404,
+    CREATED: 201,
+    BAD_REQUEST: 400,
+    UNAUTHORIZED: 401,
+    NO_CONTENT: 204,
+};
+exports.default = statusCodes;

Md03_Dev_Back_end/Bloco25/25.3/express-typescript/index.ts

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+import express, { Request, Response, NextFunction } from "express";
+import 'express-async-errors';
+import bookRouter from "./routes/books.routes";
+import statusCodes from "./statusCodes";
+
+const app = express();
+
+app.use(express.json());
+const PORT = 8000;
+
+app.get('/', (_req: Request, res: Response) => {
+  res.status(statusCodes.OK).send('Express + TypeScript');
+});
+app.use(bookRouter);
+app.use(
+  (err: Error, _req: Request, res: Response, next: NextFunction) => {
+    const { name, message, details } = err as any;
+    console.log(`name: ${name}`);
+
+    switch(name) {
+      case 'BadRequestError':
+      res.status(400).json({ message });
+      break;
+    case 'ValidationError':
+      res.status(400).json({ message: details[0].message });
+      break;
+    case 'NotFoundError':
+      res.status(404).json({ message });
+      break;
+    case 'ConflictError':
+      res.status(409).json({ message });
+      break;
+    default:
+      console.error(err);
+      res.sendStatus(500);
+    }
+
+    next();
+  }
+);
+
+app.listen(PORT,() => console.log(`Server is running at http://localhost:${PORT}`));

Md03_Dev_Back_end/Bloco25/25.3/express-typescript/interfaces/book.interface.ts

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+interface Book {
+  id?: number;
+  title: string;
+  price: number;
+  author: string;
+  isbn: string;
+}
+
+export default Book;

Md03_Dev_Back_end/Bloco25/25.3/express-typescript/package.json

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+{
+  "name": "express-typescript",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "start": "npm run build && node ./dist/index.js",
+    "dev": "tsnd index.ts",
+    "build": "tsc",
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "devDependencies": {
+    "@types/express": "4.17",
+    "@types/node": "16.11",
+    "ts-node-dev": "1.1",
+    "typescript": "4.4"
+  },
+  "dependencies": {
+    "@types/restify-errors": "4.3",
+    "express": "4.17",
+    "express-async-errors": "3.1",
+    "restify-errors": "8.0"
+  }
+}

Md03_Dev_Back_end/Bloco25/25.3/express-typescript/routes/books.routes.ts

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+import { Router } from 'express';
+
+const bookRouter = Router();
+
+export default bookRouter;

Md03_Dev_Back_end/Bloco25/25.3/express-typescript/statusCodes.ts

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+// ./statusCodes.ts
+const statusCodes = {
+  OK: 200,
+  NOT_FOUND: 404,
+  CREATED: 201,
+  BAD_REQUEST: 400,
+  UNAUTHORIZED: 401,
+  NO_CONTENT: 204,
+};
+
+export default statusCodes;

Md03_Dev_Back_end/Bloco25/25.3/express-typescript/tsconfig.json

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+{
+  "compilerOptions": {
+    "module": "commonjs",
+    "target": "es6",
+    "rootDir": "./",
+    "outDir": "./dist",
+    "esModuleInterop": true,
+    "strict": true
+  }
+}

Md03_Dev_Back_end/Bloco25/25.3/express-typescript2/.env

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+DB_HOSTNAME = localhost
+DB_USER =  root
+DB_PASSWORD = N@p0lea0
+DB_DATABASE = books_api

Md03_Dev_Back_end/Bloco25/25.3/express-typescript2/controllers/books.controller.ts

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+import { Request, Response } from 'express';
+import statusCode from '../statusCodes';
+import BookService from '../services/books.service';
+
+export default class BookController {
+  constructor(private bookservice = new BookService()) {};
+
+  public getAll = async(_req: Request, res: Response) => {
+    const { type, message } = await this.bookservice.getAll();
+
+    if(type) return res.status(statusCode[type]).json(message);
+
+    return res.status(statusCode.OK).json(message);
+  }
+}

Md03_Dev_Back_end/Bloco25/25.3/express-typescript2/index.ts

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+import express, { Request, Response, NextFunction } from "express";
+import statusCode from "./statusCodes";
+import 'express-async-errors';
+import bookRouter from "./routes/books.routes";
+
+const app = express();
+
+app.use(express.json());
+const PORT = 8000;
+
+app.get('/', (_req: Request,res: Response) => {
+  res.status(statusCode.OK).send('Express + TypeScript');
+});
+
+app.use(bookRouter);
+
+app.use((err: Error, _req: Request, res: Response, next: NextFunction) => {
+  const { name, message, details } = err as any;
+  console.log(`name: ${name}`);
+
+  switch (name) {
+    case 'BadRequestError':
+      res.status(400).json({ message });
+      break;
+    case 'ValidationError':
+      res.status(400).json({ message: details[0].message });
+      break;
+    case 'NotFoundError':
+      res.status(404).json({ message });
+      break;
+    case 'ConflictError':
+      res.status(409).json({ message });
+      break;
+    default:
+      console.error(err);
+      res.sendStatus(500);
+  }
+
+  next();
+});
+
+app.listen(PORT, () => {
+  console.log(`Server is running at http://localhost:${PORT}`);
+});

Md03_Dev_Back_end/Bloco25/25.3/express-typescript2/interfaces/book.interface.ts

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+// ./interfaces/book.interface.ts
+interface IBook {
+  id?: number;
+  title: string;
+  price: number;
+  author: string;
+  isbn: string;
+}
+
+export default IBook;

Md03_Dev_Back_end/Bloco25/25.3/express-typescript2/interfaces/services.interface.ts

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+import IBook from "./book.interface";
+
+interface IServices {
+  message: IBook[];
+  type: null | 'NOT_FOUND';
+}
+
+export default IServices;

Md03_Dev_Back_end/Bloco25/25.3/express-typescript2/models/book.model.ts

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+import { Pool, ResultSetHeader } from 'mysql2/promise';
+import IBook from '../interfaces/book.interface';
+
+export default class BookModel {
+  public connection: Pool;
+
+  constructor(connection: Pool) {
+    this.connection = connection;
+  }
+
+  public async getAll(): Promise<IBook[]> {
+    const [rows] = await this.connection.execute<IBook[] & ResultSetHeader>('SELECT * FROM books');
+
+    return rows as IBook[];
+  }
+
+  public async create(book: IBook): Promise<IBook> {
+    const { title, price, author, isbn } = book;
+    const [{ insertId }] = await this.connection.execute<ResultSetHeader>(
+      'INSERT INTO books (title, price, author, isbn) VALUES (?,?,?,?)',
+      [title, price, author, isbn]
+    );
+
+    return { id: insertId, ...book };
+  }
+}

Md03_Dev_Back_end/Bloco25/25.3/express-typescript2/models/connection.ts

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+// ./models/connection.ts
+import mysql from 'mysql2/promise'; // instalar mysql2 e dotenv
+import dotenv from 'dotenv';
+
+dotenv.config();
+
+export default mysql.createPool({
+  host: process.env.DB_HOSTNAME,
+  user: process.env.DB_USER,
+  password: process.env.DB_PASSWORD,
+  database: process.env.DB_DATABASE,
+});

Md03_Dev_Back_end/Bloco25/25.3/express-typescript2/routes/books.routes.ts

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+// ./routes/books.routes.ts
+
+import { Router } from 'express';
+import BooksController from '../controllers/books.controller';
+
+const router = Router();
+const booksController = new BooksController();
+
+router.get('/books', booksController.getAll);
+
+export default router;

Md03_Dev_Back_end/Bloco25/25.3/express-typescript2/services/books.service.ts

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+// ./services/books.service.ts
+import connection from "../models/connection";
+import BookModel from "../models/book.model";
+import IServices from "../interfaces/services.interface";
+
+export default class BookService {
+  public model: BookModel;
+
+  constructor() {
+    this.model = new BookModel(connection);
+  }
+
+  public async getAll(): Promise<IServices> {
+    const message = await this.model.getAll();
+
+    if(message) return { type: null, message };
+
+    return { type: 'NOT_FOUND', message };
+  }
+}

Md03_Dev_Back_end/Bloco25/25.3/express-typescript2/statusCodes.ts

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+const statusCode = {
+  OK: 200,
+  NOT_FOUND: 404,
+  CREATED: 201,
+  BAD_REQUEST: 400,
+  UNAUTHORIZED: 401,
+  NO_CONTENT: 204,
+}
+
+export default statusCode;

Md03_Dev_Back_end/Bloco25/25.3/express-typescript2/tsconfig.json

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+{
+  "compilerOptions": {
+    "module": "commonjs",
+    "target": "es6",
+    "rootDir": "./",
+    "outDir": "./dist",
+    "esModuleInterop": true,
+    "strict": true
+  }
+}