import {
  Controller,
  Post,
  Get,
  Body,
  Param,
  UseGuards,
  Request,
  RawBodyRequest,
  Req,
  Headers,
  HttpStatus,
  HttpException,
  Logger,
} from '@nestjs/common';
import { ApiTags, ApiOperation, ApiResponse, ApiBearerAuth } from '@nestjs/swagger';
import { JwtAuthGuard } from '../auth/auth.guard';
import { PaymentsService } from './payments.service';
import { StripeService } from './services/stripe.service';
import { WebhookService } from './services/webhook.service';
import { CreateCheckoutSessionDto } from './dto/create-checkout-session.dto';
import { CreatePortalSessionDto } from './dto/create-portal-session.dto';
import { Plan } from '@prisma/client';

@ApiTags('payments')
@Controller('payments')
export class PaymentsController {
  private readonly logger = new Logger(PaymentsController.name);

  constructor(
    private readonly paymentsService: PaymentsService,
    private readonly stripeService: StripeService,
    private readonly webhookService: WebhookService,
  ) {}

  @Post('checkout')
  @UseGuards(JwtAuthGuard)
  @ApiBearerAuth()
  @ApiOperation({ summary: 'Create Stripe checkout session' })
  @ApiResponse({ status: 201, description: 'Checkout session created successfully' })
  async createCheckoutSession(
    @Request() req: any,
    @Body() createCheckoutSessionDto: CreateCheckoutSessionDto,
  ) {
    try {
      const userId = req.user.id;
      const session = await this.stripeService.createCheckoutSession(
        userId,
        createCheckoutSessionDto.plan,
        createCheckoutSessionDto.successUrl,
        createCheckoutSessionDto.cancelUrl,
      );

      return {
        sessionId: session.id,
        url: session.url,
      };
    } catch (error) {
      this.logger.error('Failed to create checkout session:', error);
      throw new HttpException(
        'Failed to create checkout session',
        HttpStatus.INTERNAL_SERVER_ERROR,
      );
    }
  }

  @Post('portal')
  @UseGuards(JwtAuthGuard)
  @ApiBearerAuth()
  @ApiOperation({ summary: 'Create Stripe customer portal session' })
  @ApiResponse({ status: 201, description: 'Portal session created successfully' })
  async createPortalSession(
    @Request() req: any,
    @Body() createPortalSessionDto: CreatePortalSessionDto,
  ) {
    try {
      const userId = req.user.id;
      const session = await this.stripeService.createPortalSession(
        userId,
        createPortalSessionDto.returnUrl,
      );

      return {
        url: session.url,
      };
    } catch (error) {
      this.logger.error('Failed to create portal session:', error);
      throw new HttpException(
        'Failed to create portal session',
        HttpStatus.INTERNAL_SERVER_ERROR,
      );
    }
  }

  @Get('subscription')
  @UseGuards(JwtAuthGuard)
  @ApiBearerAuth()
  @ApiOperation({ summary: 'Get user subscription details' })
  @ApiResponse({ status: 200, description: 'Subscription details retrieved successfully' })
  async getSubscription(@Request() req: any) {
    try {
      const userId = req.user.id;
      const subscription = await this.paymentsService.getUserSubscription(userId);
      return subscription;
    } catch (error) {
      this.logger.error('Failed to get subscription:', error);
      throw new HttpException(
        'Failed to get subscription details',
        HttpStatus.INTERNAL_SERVER_ERROR,
      );
    }
  }

  @Get('plans')
  @ApiOperation({ summary: 'Get available subscription plans' })
  @ApiResponse({ status: 200, description: 'Plans retrieved successfully' })
  async getPlans() {
    return {
      plans: [
        {
          id: Plan.BASIC,
          name: 'Basic',
          price: 0,
          currency: 'usd',
          interval: 'month',
          features: [
            '50 images per month',
            'AI-powered naming',
            'Keyword enhancement',
            'ZIP download',
          ],
          quotaLimit: 50,
        },
        {
          id: Plan.PRO,
          name: 'Pro',
          price: 900, // $9.00 in cents
          currency: 'usd',
          interval: 'month',
          features: [
            '500 images per month',
            'AI-powered naming',
            'Keyword enhancement',
            'ZIP download',
            'Priority support',
          ],
          quotaLimit: 500,
        },
        {
          id: Plan.MAX,
          name: 'Max',
          price: 1900, // $19.00 in cents
          currency: 'usd',
          interval: 'month',
          features: [
            '1000 images per month',
            'AI-powered naming',
            'Keyword enhancement',
            'ZIP download',
            'Priority support',
            'Advanced analytics',
          ],
          quotaLimit: 1000,
        },
      ],
    };
  }

  @Post('cancel-subscription')
  @UseGuards(JwtAuthGuard)
  @ApiBearerAuth()
  @ApiOperation({ summary: 'Cancel user subscription' })
  @ApiResponse({ status: 200, description: 'Subscription cancelled successfully' })
  async cancelSubscription(@Request() req: any) {
    try {
      const userId = req.user.id;
      await this.paymentsService.cancelSubscription(userId);
      return { message: 'Subscription cancelled successfully' };
    } catch (error) {
      this.logger.error('Failed to cancel subscription:', error);
      throw new HttpException(
        'Failed to cancel subscription',
        HttpStatus.INTERNAL_SERVER_ERROR,
      );
    }
  }

  @Post('reactivate-subscription')
  @UseGuards(JwtAuthGuard)
  @ApiBearerAuth()
  @ApiOperation({ summary: 'Reactivate cancelled subscription' })
  @ApiResponse({ status: 200, description: 'Subscription reactivated successfully' })
  async reactivateSubscription(@Request() req: any) {
    try {
      const userId = req.user.id;
      await this.paymentsService.reactivateSubscription(userId);
      return { message: 'Subscription reactivated successfully' };
    } catch (error) {
      this.logger.error('Failed to reactivate subscription:', error);
      throw new HttpException(
        'Failed to reactivate subscription',
        HttpStatus.INTERNAL_SERVER_ERROR,
      );
    }
  }

  @Get('payment-history')
  @UseGuards(JwtAuthGuard)
  @ApiBearerAuth()
  @ApiOperation({ summary: 'Get user payment history' })
  @ApiResponse({ status: 200, description: 'Payment history retrieved successfully' })
  async getPaymentHistory(@Request() req: any) {
    try {
      const userId = req.user.id;
      const payments = await this.paymentsService.getPaymentHistory(userId);
      return { payments };
    } catch (error) {
      this.logger.error('Failed to get payment history:', error);
      throw new HttpException(
        'Failed to get payment history',
        HttpStatus.INTERNAL_SERVER_ERROR,
      );
    }
  }

  @Post('webhook')
  @ApiOperation({ summary: 'Handle Stripe webhooks' })
  @ApiResponse({ status: 200, description: 'Webhook processed successfully' })
  async handleWebhook(
    @Req() req: RawBodyRequest<Request>,
    @Headers('stripe-signature') signature: string,
  ) {
    try {
      await this.webhookService.handleWebhook(req.rawBody, signature);
      return { received: true };
    } catch (error) {
      this.logger.error('Webhook processing failed:', error);
      throw new HttpException(
        'Webhook processing failed',
        HttpStatus.BAD_REQUEST,
      );
    }
  }

  @Post('upgrade')
  @UseGuards(JwtAuthGuard)
  @ApiBearerAuth()
  @ApiOperation({ summary: 'Upgrade subscription plan' })
  @ApiResponse({ status: 200, description: 'Plan upgraded successfully' })
  async upgradePlan(
    @Request() req: any,
    @Body() body: { plan: Plan; successUrl: string; cancelUrl: string },
  ) {
    try {
      const userId = req.user.id;
      const session = await this.paymentsService.upgradePlan(
        userId,
        body.plan,
        body.successUrl,
        body.cancelUrl,
      );

      return {
        sessionId: session.id,
        url: session.url,
      };
    } catch (error) {
      this.logger.error('Failed to upgrade plan:', error);
      throw new HttpException(
        'Failed to upgrade plan',
        HttpStatus.INTERNAL_SERVER_ERROR,
      );
    }
  }

  @Post('downgrade')
  @UseGuards(JwtAuthGuard)
  @ApiBearerAuth()
  @ApiOperation({ summary: 'Downgrade subscription plan' })
  @ApiResponse({ status: 200, description: 'Plan downgraded successfully' })
  async downgradePlan(
    @Request() req: any,
    @Body() body: { plan: Plan },
  ) {
    try {
      const userId = req.user.id;
      await this.paymentsService.downgradePlan(userId, body.plan);
      return { message: 'Plan downgraded successfully' };
    } catch (error) {
      this.logger.error('Failed to downgrade plan:', error);
      throw new HttpException(
        'Failed to downgrade plan',
        HttpStatus.INTERNAL_SERVER_ERROR,
      );
    }
  }
}