251119:1700 Backend Phase 1

backend/src/common/auth/auth.service.ts

@@ -0,0 +1,41 @@
+import { Injectable } from '@nestjs/common';
+import { JwtService } from '@nestjs/jwt';
+import * as bcrypt from 'bcrypt';
+import { UserService } from '../../modules/user/user.service.js';
+import { RegisterDto } from './dto/register.dto.js'; // Import DTO
+
+@Injectable()
+export class AuthService {
+  constructor(
+    private userService: UserService,
+    private jwtService: JwtService,
+  ) {}
+
+  async validateUser(username: string, pass: string): Promise<any> {
+    const user = await this.userService.findOneByUsername(username);
+    if (user && (await bcrypt.compare(pass, user.password))) {
+      // eslint-disable-next-line @typescript-eslint/no-unused-vars
+      const { password, ...result } = user;
+      return result;
+    }
+    return null;
+  }
+
+  async login(user: any) {
+    const payload = { username: user.username, sub: user.user_id };
+    return {
+      access_token: this.jwtService.sign(payload),
+    };
+  }
+
+  async register(userDto: RegisterDto) {
+    const salt = await bcrypt.genSalt();
+    const hashedPassword = await bcrypt.hash(userDto.password, salt);
+
+    // ใช้ค่าจาก DTO ที่ Validate มาแล้ว
+    return this.userService.create({
+      ...userDto,
+      password: hashedPassword,
+    });
+  }
+}