import { Body, Controller, Post, HttpCode, HttpStatus } from '@nestjs/common';
import { ApiTags, ApiOperation, ApiResponse, ApiBody } from '@nestjs/swagger';
import { AuthService } from './auth.service';
import { RegisterDto, LoginDto, RequestOtpDto, VerifyOtpDto, RequestPasswordResetDto, ResetPasswordDto } from './auth.dto';

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

  @Post('register')
  @ApiOperation({ 
    summary: 'Register new passenger account',
    description: 'Create a new passenger account with email, phone, and password. Returns user details and JWT token for immediate login.'
  })
  @ApiResponse({ status: 201, description: 'Account created successfully. Returns user object and JWT token.' })
  @ApiResponse({ status: 400, description: 'Validation error (invalid email, weak password, etc.)' })
  @ApiResponse({ status: 409, description: 'Email or phone already registered' })
  @ApiBody({ type: RegisterDto })
  register(@Body() dto: RegisterDto) { return this.service.register(dto); }

  @Post('login')
  @HttpCode(HttpStatus.OK)
  @ApiOperation({ 
    summary: 'Login with email and password',
    description: 'Authenticate user and receive JWT token. Token expires in 7 days by default. Failed login attempts are tracked and account may be locked after 5 consecutive failures.'
  })
  @ApiResponse({ status: 200, description: 'Login successful. Returns JWT token and user details.' })
  @ApiResponse({ status: 401, description: 'Invalid credentials or account locked' })
  @ApiResponse({ status: 403, description: 'Account temporarily blocked due to fraud detection' })
  @ApiBody({ type: LoginDto })
  login(@Body() dto: LoginDto) { return this.service.login(dto); }

  @Post('otp/request')
  @HttpCode(HttpStatus.OK)
  @ApiOperation({ 
    summary: 'Request OTP verification code',
    description: 'Send a 6-digit OTP code to user email. Code expires in 10 minutes. Used for registration verification, password reset, or two-factor authentication.'
  })
  @ApiResponse({ status: 200, description: 'OTP sent successfully to email' })
  @ApiResponse({ status: 404, description: 'Email not found (for PASSWORD_RESET purpose)' })
  @ApiResponse({ status: 429, description: 'Too many OTP requests. Please wait before requesting again.' })
  @ApiBody({ type: RequestOtpDto })
  requestOtp(@Body() dto: RequestOtpDto) { return this.service.requestOtp(dto); }

  @Post('otp/verify')
  @HttpCode(HttpStatus.OK)
  @ApiOperation({ 
    summary: 'Verify OTP code',
    description: 'Validate the 6-digit OTP code sent to user email. Code must match and not be expired.'
  })
  @ApiResponse({ status: 200, description: 'OTP verified successfully' })
  @ApiResponse({ status: 400, description: 'Invalid or expired OTP code' })
  @ApiResponse({ status: 404, description: 'No OTP found for this email and purpose' })
  @ApiBody({ type: VerifyOtpDto })
  verifyOtp(@Body() dto: VerifyOtpDto) { return this.service.verifyOtp(dto); }

  @Post('password/reset-request')
  @HttpCode(HttpStatus.OK)
  @ApiOperation({ 
    summary: 'Request password reset link',
    description: 'Send password reset link to user email. Link contains a secure token valid for 1 hour.'
  })
  @ApiResponse({ status: 200, description: 'Password reset email sent successfully' })
  @ApiResponse({ status: 404, description: 'Email not found' })
  @ApiResponse({ status: 429, description: 'Too many reset requests. Please wait before trying again.' })
  @ApiBody({ type: RequestPasswordResetDto })
  requestPasswordReset(@Body() dto: RequestPasswordResetDto) { return this.service.requestPasswordReset(dto); }

  @Post('password/reset')
  @HttpCode(HttpStatus.OK)
  @ApiOperation({ 
    summary: 'Reset password with token',
    description: 'Reset user password using the token received via email. Token is single-use and expires after 1 hour.'
  })
  @ApiResponse({ status: 200, description: 'Password reset successfully' })
  @ApiResponse({ status: 400, description: 'Invalid, expired, or already used token' })
  @ApiResponse({ status: 404, description: 'User not found' })
  @ApiBody({ type: ResetPasswordDto })
  resetPassword(@Body() dto: ResetPasswordDto) { return this.service.resetPassword(dto); }
}