PR de correção

.gitignore

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

jest.config.js

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+module.exports = {
+  roots: ["<rootDir>/tests"],
+  transform: {
+    "^.+\\.tsx?$": "ts-jest",
+  },
+  testRegex: "(/__tests__/.*|(\\.|/)(test|spec))\\.tsx?$",
+  moduleFileExtensions: ["ts", "tsx", "js", "jsx", "json", "node"],
+};

package.json

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+{
+  "name": "lama-template",
+  "version": "1.0.0",
+  "description": "Template para o projeto LAMA",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "start": "ts-node ./src/index.ts"
+  },
+  "keywords": [
+    "api",
+    "labook"
+  ],
+  "author": "João Alves",
+  "license": "ISC",
+  "dependencies": {
+    "@types/bcryptjs": "^2.4.2",
+    "@types/express": "^4.17.7",
+    "@types/jest": "^25.2.3",
+    "@types/jsonwebtoken": "^8.5.0",
+    "@types/knex": "^0.16.1",
+    "@types/uuid": "^8.0.0",
+    "bcryptjs": "^2.4.3",
+    "dotenv": "^8.2.0",
+    "express": "^4.17.1",
+    "jsonwebtoken": "^8.5.1",
+    "jest": "^26.0.1",
+    "knex": "^0.21.2",
+    "moment": "^2.27.0",
+    "mysql": "^2.18.1",
+    "ts-jest": "^26.1.0",
+    "ts-node": "^8.10.2",
+    "typescript": "^3.9.6",
+    "uuid": "^8.2.0"
+  }
+}

src/business/BandBusiness.ts

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+import { UserDatabase } from "../data/UserDatabase";
+import { BaseError, InvalidName } from "../error/BaseError";
+import { BandInputDTO } from "../model/Band";
+import { IdGenerator } from "../services/IdGenerator";
+
+export class BandBusiness {
+
+    public createBand=async(input: BandInputDTO)=> {
+      try {
+        const {name,music_genre,responsible } = input
+
+        if (!name || !music_genre || !responsible ) {
+
+          throw new BaseError(
+            400,
+            'Necessário preencher os campos "name", "music_genre" e "responsible"'
+          );
+        }
+        // if (Band.name.length < 3) {
+        //   throw new InvalidName();
+        // }
+        const idGenerator = new IdGenerator();
+        const id = idGenerator.generate();
+
+        const userDatabase = new UserDatabase();
+        userDatabase.createBand(
+              id,
+              name,
+              music_genre,
+              responsible
+          );
+
+} catch (error: any) {
+    throw new Error(error.message);
+  }
+    }
+}

src/business/UserBusiness.ts

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+import { UserInputDTO, LoginInputDTO } from "../model/User";
+import { UserDatabase } from "../data/UserDatabase";
+import { IdGenerator } from "../services/IdGenerator";
+import { HashManager } from "../services/HashManager";
+import { Authenticator } from "../services/Authenticator";
+import {
+  BaseError,
+  InvalidEmail,
+  InvalidName,
+  InvalidPassword,
+  UserNotFound,
+} from "../error/BaseError";
+
+export class UserBusiness {
+  async createUser(user: UserInputDTO): Promise<string> {
+    try {
+      if (!user.name || !user.email || !user.password || !user.role) {
+        throw new BaseError(
+          400,
+          'Necessário preencher os campos "name", "email" e "password"'
+        );
+      }
+      if (user.name.length < 3) {
+        throw new InvalidName();
+      }
+      if (!user.email.includes("@")) {
+        throw new InvalidEmail();
+      }
+      if (user.password.length < 8) {
+        throw new InvalidPassword();
+      }
+      const idGenerator = new IdGenerator();
+      const id = idGenerator.generate();
+
+      const hashManager = new HashManager();
+      const hashPassword = await hashManager.hash(user.password);
+
+      const userDatabase = new UserDatabase();
+      await userDatabase.createUser(
+        id,
+        user.email,
+        user.name,
+        hashPassword,
+        user.role
+      );
+
+      const authenticator = new Authenticator();
+      const accessToken = authenticator.generateToken({ id, role: user.role });
+
+      return accessToken;
+    } catch (error: any) {
+      throw new Error(error.message);
+    }
+  }
+
+  async getUserByEmail(user: LoginInputDTO): Promise<string> {
+    try {
+      if (!user.email || !user.password) {
+        throw new BaseError(400, "Necessário preencher todos os campos");
+      }
+      if (!user.email.includes("@")) {
+        throw new InvalidEmail();
+      }
+      const userDatabase = new UserDatabase();
+      const userFromDB = await userDatabase.getUserByEmail(user.email);
+
+      if (!userFromDB) {
+        throw new UserNotFound();
+      }
+
+      const hashManager = new HashManager();
+      const hashCompare = await hashManager.compare(
+        user.password,
+        userFromDB.getPassword()
+      );
+      if (!hashCompare) {
+        throw new InvalidPassword();
+      }
+      const authenticator = new Authenticator();
+      const accessToken = authenticator.generateToken({
+        id: userFromDB.getId(),
+        role: userFromDB.getRole(),
+      });
+
+      return accessToken;
+    } catch (error: any) {
+      throw new Error(error.message);
+    }
+  }
+}

src/controller/BandController.ts

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+import { BandBusiness } from "../business/BandBusiness";
+import { BandInputDTO } from "../model/Band";
+import { Request, Response } from "express";
+
+const bandBusiness = new BandBusiness()
+
+export class BandController{
+    public createBand=async(req: Request, 
+        res: Response)=> {
+        try {
+
+            const{
+                name,
+                music_genre,
+                responsible
+            } = req.body
+
+            const input:BandInputDTO = {
+                name,
+                music_genre,
+                responsible,
+                id: ""
+            }
+
+
+            await bandBusiness.createBand(input)
+
+            res.send('Banda criada com sucesso!')
+
+        } catch (err: any) {
+            res.status(err.statusCode || 400).send(err.message || err.sqlMessage);
+        }
+    }
+}

src/controller/UserController.ts

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+import { Request, Response } from "express";
+import { UserInputDTO, LoginInputDTO} from "../model/User";
+import { UserBusiness } from "../business/UserBusiness";
+import { BaseDatabase } from "../data/BaseDatabase";
+
+export class UserController {
+    async signup(req: Request, res: Response) {
+        try {
+
+            const input: UserInputDTO = {
+                email: req.body.email,
+                name: req.body.name,
+                password: req.body.password,
+                role: req.body.role
+            }
+
+            const userBusiness = new UserBusiness();
+            const token = await userBusiness.createUser(input);
+
+            res.status(200).send({ token });
+
+        } catch (error: any) {
+            res.status(400).send({ error: error.message });
+        }
+
+        await BaseDatabase.destroyConnection();
+    }
+
+    async login(req: Request, res: Response) {
+
+        try {
+
+            const loginData: LoginInputDTO = {
+                email: req.body.email,
+                password: req.body.password
+            };
+
+            const userBusiness = new UserBusiness();
+            const token = await userBusiness.getUserByEmail(loginData);
+
+            res.status(200).send({ token });
+
+        } catch (error: any) {
+            res.status(400).send({ error: error.message });
+        }
+
+        await BaseDatabase.destroyConnection();
+    }
+
+}

src/data/BandDatabase.ts

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+import { Band } from "../model/Band";
+import { BaseDatabase } from "./BaseDatabase";
+
+export class BandDatabase extends BaseDatabase {
+
+    private static TABLE_NAME = "LAMA_BANDAS";
+
+    public async createBand(
+      id: string,
+      name: string,
+      music_genre: string,
+      responsible: string,
+    ): Promise<void> {
+      try {
+        await this.getConnection()
+          .insert({
+            id,
+            name,
+            music_genre,
+            responsible
+          })
+          .into(BandDatabase.TABLE_NAME);
+      } catch (error: any) {
+        throw new Error(error.sqlMessage || error.message);
+      }
+    }
+}
+
+//   public async getBandByName(name: string): Promise<Band> {
+//     const result = await this.getConnection()
+//       .select("*")
+//       .from(UserDatabase.TABLE_NAME)
+//       .where({ name });
+
+//     return Band.toUserBand(result[0]);
+//   }
+

src/data/BaseDatabase.ts

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+import knex from "knex";
+import Knex   from "knex";
+
+
+export abstract class BaseDatabase {
+
+    private static connection: Knex | null = null;
+
+    protected getConnection(): Knex{
+        if(!BaseDatabase.connection){
+            BaseDatabase.connection = knex({
+                client: "mysql",
+                connection: {
+                  host: process.env.DB_HOST,
+                  port: 3306,
+                  user: process.env.DB_USER,
+                  password: process.env.DB_PASSWORD,
+                  database: process.env.DB_DATABASE_NAME,
+                },
+              });        
+        }
+
+        return BaseDatabase.connection;
+    }
+
+    public static async destroyConnection(): Promise<void>{
+        if(BaseDatabase.connection){
+            await BaseDatabase.connection.destroy();
+            BaseDatabase.connection = null;
+        }
+    }
+}

src/data/UserDatabase.ts

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+import { BaseDatabase } from "./BaseDatabase";
+import { User } from "../model/User";
+
+export class UserDatabase extends BaseDatabase {
+  createBand(id: string, name: string, music_genre: string, responsible: string) {
+      throw new Error("Method not implemented.");
+  }
+
+  private static TABLE_NAME = "LAMA_USUARIOS";
+
+  public async createUser(
+    id: string,
+    email: string,
+    name: string,
+    password: string,
+    role: string
+  ): Promise<void> {
+    try {
+      await this.getConnection()
+        .insert({
+          id,
+          email,
+          name,
+          password,
+          role
+        })
+        .into(UserDatabase.TABLE_NAME);
+    } catch (error: any) {
+      throw new Error(error.sqlMessage || error.message);
+    }
+  }
+
+  public async getUserByEmail(email: string): Promise<User> {
+    const result = await this.getConnection()
+      .select("*")
+      .from(UserDatabase.TABLE_NAME)
+      .where({ email });
+
+    return User.toUserModel(result[0]);
+  }
+
+}