implementa arquitetura limpa

semana20/aula60/template-backend/.gitignore

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+node_modules
+package-lock.json
+build
+.env

semana20/aula60/template-backend/package.json

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+{
+  "name": "template-backend",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "dependencies": {
+    "@types/jsonwebtoken": "^8.5.6",
+    "accepts": "^1.3.7",
+    "anymatch": "^3.1.2",
+    "arg": "^4.1.3",
+    "array-flatten": "^1.1.1",
+    "balanced-match": "^1.0.2",
+    "bcryptjs": "^2.4.3",
+    "bignumber.js": "^9.0.0",
+    "binary-extensions": "^2.2.0",
+    "body-parser": "^1.19.1",
+    "brace-expansion": "^1.1.11",
+    "braces": "^3.0.2",
+    "buffer-from": "^1.1.2",
+    "bytes": "^3.1.1",
+    "chokidar": "^3.5.2",
+    "colorette": "^2.0.16",
+    "commander": "^7.2.0",
+    "concat-map": "^0.0.1",
+    "content-disposition": "^0.5.4",
+    "content-type": "^1.0.4",
+    "cookie": "^0.4.1",
+    "cookie-signature": "^1.0.6",
+    "core-util-is": "^1.0.3",
+    "cors": "^2.8.5",
+    "create-require": "^1.1.1",
+    "debug": "^2.6.9",
+    "depd": "^1.1.2",
+    "destroy": "^1.0.4",
+    "diff": "^4.0.2",
+    "dotenv": "^10.0.0",
+    "dynamic-dedupe": "^0.3.0",
+    "ee-first": "^1.1.1",
+    "encodeurl": "^1.0.2",
+    "escalade": "^3.1.1",
+    "escape-html": "^1.0.3",
+    "esm": "^3.2.25",
+    "etag": "^1.8.1",
+    "express": "^4.17.2",
+    "fill-range": "^7.0.1",
+    "finalhandler": "^1.1.2",
+    "forwarded": "^0.2.0",
+    "fresh": "^0.5.2",
+    "fs.realpath": "^1.0.0",
+    "function-bind": "^1.1.1",
+    "getopts": "^2.2.5",
+    "glob": "^7.2.0",
+    "glob-parent": "^5.1.2",
+    "has": "^1.0.3",
+    "http-errors": "^1.8.1",
+    "iconv-lite": "^0.4.24",
+    "inflight": "^1.0.6",
+    "inherits": "^2.0.4",
+    "interpret": "^2.2.0",
+    "ipaddr.js": "^1.9.1",
+    "is-binary-path": "^2.1.0",
+    "is-core-module": "^2.8.1",
+    "is-extglob": "^2.1.1",
+    "is-glob": "^4.0.3",
+    "is-number": "^7.0.0",
+    "isarray": "^1.0.0",
+    "jsonwebtoken": "^8.5.1",
+    "knex": "^0.95.15",
+    "lodash": "^4.17.21",
+    "make-error": "^1.3.6",
+    "media-typer": "^0.3.0",
+    "merge-descriptors": "^1.0.1",
+    "methods": "^1.1.2",
+    "mime": "^1.6.0",
+    "mime-db": "^1.51.0",
+    "mime-types": "^2.1.34",
+    "minimatch": "^3.0.4",
+    "minimist": "^1.2.5",
+    "mkdirp": "^1.0.4",
+    "ms": "^2.0.0",
+    "mysql": "^2.18.1",
+    "negotiator": "^0.6.2",
+    "normalize-path": "^3.0.0",
+    "object-assign": "^4.1.1",
+    "on-finished": "^2.3.0",
+    "once": "^1.4.0",
+    "parseurl": "^1.3.3",
+    "path-is-absolute": "^1.0.1",
+    "path-parse": "^1.0.7",
+    "path-to-regexp": "^0.1.7",
+    "pg-connection-string": "^2.5.0",
+    "picomatch": "^2.3.1",
+    "process-nextick-args": "^2.0.1",
+    "proxy-addr": "^2.0.7",
+    "qs": "^6.9.6",
+    "range-parser": "^1.2.1",
+    "raw-body": "^2.4.2",
+    "readable-stream": "^2.3.7",
+    "readdirp": "^3.6.0",
+    "rechoir": "^0.7.0",
+    "resolve": "^1.21.0",
+    "resolve-from": "^5.0.0",
+    "rimraf": "^2.7.1",
+    "safe-buffer": "^5.2.1",
+    "safer-buffer": "^2.1.2",
+    "send": "^0.17.2",
+    "serve-static": "^1.14.2",
+    "setprototypeof": "^1.2.0",
+    "source-map": "^0.6.1",
+    "source-map-support": "^0.5.21",
+    "sqlstring": "^2.3.1",
+    "statuses": "^1.5.0",
+    "string_decoder": "^1.1.1",
+    "strip-bom": "^3.0.0",
+    "strip-json-comments": "^2.0.1",
+    "supports-preserve-symlinks-flag": "^1.0.0",
+    "tarn": "^3.0.2",
+    "tildify": "^2.0.0",
+    "to-regex-range": "^5.0.1",
+    "toidentifier": "^1.0.1",
+    "tree-kill": "^1.2.2",
+    "ts-node": "^9.1.1",
+    "ts-node-dev": "^1.1.8",
+    "tsconfig": "^7.0.0",
+    "type-is": "^1.6.18",
+    "typescript": "^4.5.4",
+    "unpipe": "^1.0.0",
+    "util-deprecate": "^1.0.2",
+    "utils-merge": "^1.0.1",
+    "uuid": "^8.3.2",
+    "vary": "^1.1.2",
+    "wrappy": "^1.0.2",
+    "xtend": "^4.0.2",
+    "yn": "^3.1.1"
+  },
+  "scripts": {
+    "dev": "ts-node-dev ./src/index.ts",
+    "start": "tsc && node ./build/index.js",
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "devDependencies": {
+    "@types/bcryptjs": "^2.4.2",
+    "@types/cors": "^2.8.12",
+    "@types/express": "^4.17.13",
+    "@types/uuid": "^8.3.3"
+  }
+}

semana20/aula60/template-backend/src/business/PostBusiness.ts

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+import { Post } from "../model/Post";
+import { PostRepository } from "./PostRepository";
+
+export class PostBusiness {
+  private postData: PostRepository;
+
+  constructor(postRepository: PostRepository) {
+    this.postData = postRepository;
+  }
+
+  getPostById = async (id: string): Promise<Post | undefined> => {
+    const post = await this.postData.getPostById(id);
+
+    return post;
+  };
+
+  //irá ter outros métodos como criar post
+}

semana20/aula60/template-backend/src/business/PostRepository.ts

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+import { Post } from "../model/Post";
+
+export interface PostRepository {
+  getPostById(id: string): Promise<Post | undefined>;
+}

semana20/aula60/template-backend/src/controller/PostController.ts

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+import { Request, Response } from "express";
+import { PostBusiness } from "../business/PostBusiness";
+import { PostDatabase } from "../data/PostDatabase";
+
+export class PostController {
+  postBusiness: PostBusiness;
+
+  constructor() {
+    this.postBusiness = new PostBusiness(new PostDatabase());
+  }
+
+  getPostById = async (req: Request, res: Response) => {
+    try {
+      const { id } = req.params;
+
+      const post = await this.postBusiness.getPostById(id);
+
+      res.send(post);
+    } catch (error: any) {
+      console.log(error);
+      res.status(500).send("Ocorreu um erro inesperado!");
+    }
+  };
+}

semana20/aula60/template-backend/src/controller/app.ts

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+import express from "express";
+import cors from "cors";
+
+export const app = express();
+
+app.use(express.json());
+app.use(cors());
+
+app.listen(3003, () => {
+  console.log("Servidor pronto!");
+});

semana20/aula60/template-backend/src/data/BaseDatabase.ts

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+import knex from "knex";
+import dotenv from "dotenv";
+
+dotenv.config();
+
+export class BaseDatabase {
+  protected connection = knex({
+    client: "mysql",
+    connection: {
+      host: process.env.DB_HOST,
+      user: process.env.DB_USER,
+      password: process.env.DB_PASSWORD,
+      database: process.env.DB_SCHEMA,
+      port: 3306,
+      multipleStatements: true,
+    },
+  });
+}

semana20/aula60/template-backend/src/data/PostDatabase.ts

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+import { Post } from "../model/Post";
+import { BaseDatabase } from "../data/BaseDatabase";
+import { PostRepository } from "../business/PostRepository";
+
+export class PostDatabase extends BaseDatabase implements PostRepository {
+  getPostById = async (id: string): Promise<Post | undefined> => {
+    const result = await this.connection("labook_posts").where({ id });
+
+    return result[0];
+  };
+}

semana20/aula60/template-backend/src/index.ts

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+import { app } from "./controller/app";
+import { PostController } from "./controller/PostController";
+
+const postController = new PostController();
+
+app.get("/posts/:id", postController.getPostById);

semana20/aula60/template-backend/src/model/Post.ts

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+export enum POST_TYPES {
+  NORMAL = "NORMAL",
+  EVENT = "EVENT",
+}
+
+export interface Post {
+  userId: string;
+  id: string;
+  photo: string;
+  description: string;
+  createdAt: Date;
+  type: POST_TYPES;
+}

semana20/aula60/template-backend/src/model/User.ts

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+export interface AuthenticationData {
+  id: string;
+}
+
+export interface UserCredentials {
+  email: string;
+  password: string;
+}
+
+export interface User extends AuthenticationData, UserCredentials {
+  name: string;
+}

semana20/aula60/template-backend/src/services/Authenticator.ts

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+import { config } from "dotenv";
+import { JwtPayload, sign, verify } from "jsonwebtoken";
+import { AuthenticationData } from "../model/User";
+
+config();
+
+export class Authenticator {
+  generateToken = (payload: AuthenticationData) => {
+    return sign(payload, process.env.JWT_KEY!, {
+      expiresIn: process.env.ACCESS_TOKEN_EXPIRES_IN,
+    });
+  };
+
+  getTokenData = (token: string): AuthenticationData | null => {
+    try {
+      const tokenData = verify(token, process.env.JWT_KEY!) as JwtPayload;
+
+      return {
+        id: tokenData.id,
+      };
+    } catch (error) {
+      return null;
+    }
+  };
+}

semana20/aula60/template-backend/src/services/HashManager.ts

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+import * as bcrypt from "bcryptjs";
+
+export class HashManager {
+  async hash(text: string): Promise<string> {
+    const rounds = Number(process.env.BCRYPT_COST);
+    const salt = await bcrypt.genSalt(rounds);
+    return bcrypt.hash(text, salt);
+  }
+
+  async compare(text: string, hash: string): Promise<boolean> {
+    return bcrypt.compare(text, hash);
+  }
+}

semana20/aula60/template-backend/src/services/IdGenerator.ts

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+import { v4 } from "uuid";
+
+export class IdGenerator {
+  generate = () => v4();
+}

semana20/aula60/template-backend/tsconfig.json

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+{
+  "compilerOptions": {
+    "target": "es6",
+    "strict": true,
+    "module": "commonjs",
+    "sourceMap": true,
+    "esModuleInterop": true,
+    "outDir": "./build",
+    "rootDir": "./src",
+    "removeComments": true,
+    "noImplicitAny": true
+  }
+}