import { Controller, Post, Body, HttpCode, HttpStatus, HttpException, Get, UseGuards, Request } from '@nestjs/common';
import { AuthService } from '../services/auth.service';
import { LoginDto, RegisterDto, ForgotPasswordDto, ResetPasswordDto } from '../dto/auth.dto';
import { ApiTags, ApiOperation, ApiResponse } from '@nestjs/swagger';
import { JwtAuthGuard } from '../auth/guards/jwt-auth.guard';

@ApiTags('auth')
@Controller('auth')
export class AuthController {
  constructor(private readonly authService: AuthService) {}

  @Post('login')
  @HttpCode(HttpStatus.OK)
  @ApiOperation({ summary: 'Login user' })
  @ApiResponse({ status: 200, description: 'Successfully logged in' })
  @ApiResponse({ status: 401, description: 'Invalid credentials' })
  async login(@Body() loginDto: LoginDto) {
    const user = await this.authService.validateUser(
      loginDto.email,
      loginDto.password,
    );

    if (!user) {
      throw new HttpException('Invalid credentials', HttpStatus.UNAUTHORIZED);
    }

    return this.authService.login(user);
  }

  @Post('register')
  @HttpCode(HttpStatus.CREATED)
  @ApiOperation({ summary: 'Register new user' })
  @ApiResponse({ status: 201, description: 'User registered successfully' })
  @ApiResponse({ status: 400, description: 'Invalid input' })
  async register(@Body() registerDto: RegisterDto) {
    return this.authService.register(registerDto);
  }

  @Post('forgot-password')
  @HttpCode(HttpStatus.OK)
  @ApiOperation({ summary: 'Request password reset' })
  @ApiResponse({ status: 200, description: 'Password reset email sent' })
  @ApiResponse({ status: 404, description: 'User not found' })
  async forgotPassword(@Body() forgotPasswordDto: ForgotPasswordDto) {
    return this.authService.forgotPassword(forgotPasswordDto.email);
  }

  @Post('reset-password')
  @HttpCode(HttpStatus.OK)
  @ApiOperation({ summary: 'Reset password' })
  @ApiResponse({ status: 200, description: 'Password reset successfully' })
  @ApiResponse({ status: 400, description: 'Invalid token' })
  async resetPassword(@Body() resetPasswordDto: ResetPasswordDto) {
    return this.authService.resetPassword(
      resetPasswordDto.token,
      resetPasswordDto.newPassword,
    );
  }

  @Get('me')
  @UseGuards(JwtAuthGuard)
  @ApiOperation({ summary: 'Get current user' })
  @ApiResponse({ status: 200, description: 'Current user data' })
  @ApiResponse({ status: 401, description: 'Unauthorized' })
  async getCurrentUser(@Request() req) {
    return this.authService.getProfile(req.user.id);
  }
}