src/auth/auth.controller.ts

import {
  Controller,
  Post,
  Body,
  UsePipes,
  ValidationPipe,
  UnauthorizedException,
  Get,
  Req,
  Res,
  UseGuards,
} from '@nestjs/common';
import { AuthService } from './auth.service';
import { CreateUserDto } from '../users/dto/create-user.dto';
import { UsersService } from '../users/users.service';
import { LoginDto } from './dto/login.dto';
import { AuthGuard } from '@nestjs/passport';
import { ConfigService } from '@nestjs/config';

@Controller('auth')
export class AuthController {
  constructor(
    private authService: AuthService,
    private usersService: UsersService,
    private configService: ConfigService,
  ) {}

  @Post('login')
  @UsePipes(new ValidationPipe())
  async login(@Body() loginDto: LoginDto) {
    const user = await this.authService.validateUser(
      loginDto.username,
      loginDto.pass,
    );
    if (!user) {
      throw new UnauthorizedException('Invalid credentials');
    }
    return this.authService.login(user);
  }

  @Post('register')
  @UsePipes(new ValidationPipe())
  async register(@Body() createUserDto: CreateUserDto) {
    return this.usersService.create(createUserDto);
  }

  @Get('twitter')
  @UseGuards(AuthGuard('twitter'))
  async twitterLogin() {
    // Initiates the Twitter OAuth flow
  }

  @Get('twitter/callback')
  @UseGuards(AuthGuard('twitter'))
  async twitterLoginCallback(@Req() req, @Res() res) {
    const jwt = await this.authService.login(req.user);
    const frontendUrl =
      this.configService.get<string>('FRONTEND_URL') || 'http://localhost:3000';
    res.redirect(`${frontendUrl}/auth/success?token=${jwt.access_token}`);
  }
}