all

apps/api/src/modules/auth/auth.controller.ts

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+import { Body, Controller, Inject, Post } from "@nestjs/common";
+import type { LoginInput } from "../../dtos/auth.dto.js";
+import {
+  AUTH_SERVICE,
+  type IAuthService,
+} from "./interfaces/auth-service.interface.js";
+
+@Controller("auth")
+export class AuthController {
+  constructor(
+    @Inject(AUTH_SERVICE) private readonly authService: IAuthService,
+  ) {}
+
+  @Post("login")
+  login(@Body() body: LoginInput) {
+    return this.authService.login(body);
+  }
+}

apps/api/src/modules/auth/auth.module.ts

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+import { Module } from "@nestjs/common";
+import { UserModule } from "../user/user.module.js";
+import { AuthController } from "./auth.controller.js";
+import { AuthService } from "./auth.service.js";
+import { AUTH_SERVICE } from "./interfaces/auth-service.interface.js";
+
+@Module({
+  imports: [UserModule],
+  controllers: [AuthController],
+  providers: [{ provide: AUTH_SERVICE, useClass: AuthService }],
+})
+export class AuthModule {}

apps/api/src/modules/auth/auth.service.ts

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+import { Inject, Injectable, UnauthorizedException } from "@nestjs/common";
+import type { LoginInput } from "../../dtos/auth.dto.js";
+import type { User } from "../../entities/user.entity.js";
+import {
+  USER_SERVICE,
+  type IUserService,
+} from "../user/interfaces/user-service.interface.js";
+import type { IAuthService } from "./interfaces/auth-service.interface.js";
+
+@Injectable()
+export class AuthService implements IAuthService {
+  constructor(
+    @Inject(USER_SERVICE) private readonly userService: IUserService,
+  ) {}
+
+  async login({ id, password }: LoginInput): Promise<User> {
+    const user = await this.userService.verifyCredentials({ id, password });
+    if (!user) {
+      throw new UnauthorizedException("Credenciales inválidas");
+    }
+    return user;
+  }
+}

apps/api/src/modules/auth/interfaces/auth-service.interface.ts

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+import type { LoginInput } from "../../../dtos/auth.dto.js";
+import type { User } from "../../../entities/user.entity.js";
+
+export const AUTH_SERVICE = Symbol("AUTH_SERVICE");
+
+export interface IAuthService {
+  login(input: LoginInput): Promise<User>;
+}