refactor nest app to server folder

server/src/user/user.service.ts

@@ -0,0 +1,57 @@
+import { Injectable } from '@nestjs/common';
+import { InjectRepository } from '@nestjs/typeorm';
+import { Repository } from 'typeorm';
+import { User } from '../entity/user';
+import * as bcrypt from 'bcrypt';
+import { FindOptionsRelations } from 'typeorm/find-options/FindOptionsRelations';
+import { DvbookingLoggerService } from '../logger/dvbooking-logger.service';
+
+@Injectable()
+export class UserService {
+  constructor(
+    @InjectRepository(User)
+    private usersRepository: Repository<User>,
+    private readonly logger: DvbookingLoggerService,
+  ) {}
+
+  findAll(): Promise<User[]> {
+    this.logger.log('Finding all users', 'UserService');
+    return this.usersRepository.find();
+  }
+
+  findOne(id: number): Promise<User | null> {
+    this.logger.log(`Finding user with id: ${id}`, 'UserService');
+    return this.usersRepository.findOneBy({ id });
+  }
+
+  findByUsername(
+    username: string,
+    relations: FindOptionsRelations<User>,
+  ): Promise<User | null> {
+    this.logger.log(`Finding user with username: ${username}`, 'UserService');
+    return this.usersRepository.findOne({ where: { username }, relations });
+  }
+
+  async create(user: Partial<User>): Promise<User> {
+    this.logger.log('Creating a new user', 'UserService');
+    if (user.password) {
+      user.password = await bcrypt.hash(user.password, 12);
+    }
+    const newUser = this.usersRepository.create(user);
+    return this.usersRepository.save(newUser);
+  }
+
+  async update(id: number, user: Partial<User>): Promise<User | null> {
+    this.logger.log(`Updating user with id: ${id}`, 'UserService');
+    if (user.password) {
+      user.password = await bcrypt.hash(user.password, 12);
+    }
+    await this.usersRepository.update(id, user);
+    return this.usersRepository.findOneBy({ id });
+  }
+
+  async remove(id: number): Promise<void> {
+    this.logger.log(`Removing user with id: ${id}`, 'UserService');
+    await this.usersRepository.delete(id);
+  }
+}