# All files / modules/billing/controllers stripe.controller.ts

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     import {
      Controller,
      Get,
      Post,
      Body,
      UseGuards,
      Query,
    } from '@nestjs/common';
    import {
      ApiTags,
      ApiOperation,
      ApiBearerAuth,
      ApiQuery,
    } from '@nestjs/swagger';
    import { StripeService } from '../services/stripe.service';
    import {
      CreateCheckoutSessionDto,
      CreateBillingPortalSessionDto,
    } from '../dto/stripe-webhook.dto';
    import { JwtAuthGuard } from '../../auth/guards/jwt-auth.guard';
    import { PermissionsGuard, RequirePermissions } from '../../rbac/guards/permissions.guard';
    import { CurrentUser } from '../../auth/decorators/current-user.decorator';
    import { RequestUser } from '../../auth/strategies/jwt.strategy';

    @ApiTags('stripe')
    @Controller('stripe')
    @UseGuards(JwtAuthGuard)
    @ApiBearerAuth()
    export class StripeController {
      constructor(private readonly stripeService: StripeService) {}

      @Post('checkout-session')
      @UseGuards(PermissionsGuard)
      @RequirePermissions('billing:manage')
      @ApiOperation({ summary: 'Create Stripe checkout session' })
      async createCheckoutSession(
        @Body() dto: CreateCheckoutSessionDto,
        @CurrentUser() user: RequestUser,
      ) {
        dto.tenant_id = user.tenant_id;
        const session = await this.stripeService.createCheckoutSession(dto);
        return {
          session_id: session.id,
          url: session.url,
        };
      }

      @Post('billing-portal')
      @UseGuards(PermissionsGuard)
      @RequirePermissions('billing:manage')
      @ApiOperation({ summary: 'Create Stripe billing portal session' })
      async createBillingPortalSession(
        @Body() dto: CreateBillingPortalSessionDto,
        @CurrentUser() user: RequestUser,
      ) {
        dto.tenant_id = user.tenant_id;
        const session = await this.stripeService.createBillingPortalSession(dto);
        return {
          url: session.url,
        };
      }

      @Post('setup-intent')
      @UseGuards(PermissionsGuard)
      @RequirePermissions('billing:manage')
      @ApiOperation({ summary: 'Create setup intent for adding payment method' })
      async createSetupIntent(@CurrentUser() user: RequestUser) {
        const customer = await this.stripeService.findCustomerByTenantId(user.tenant_id);

        Iif (!customer) {
          return {
            error: 'Stripe customer not found',
            client_secret: null,
          };
        }

        const setupIntent = await this.stripeService.createSetupIntent(customer.id);
        return {
          client_secret: setupIntent.client_secret,
        };
      }

      @Get('prices')
      @ApiOperation({ summary: 'List available Stripe prices/plans' })
      @ApiQuery({ name: 'product_id', required: false })
      async listPrices(@Query('product_id') productId?: string) {
        const prices = await this.stripeService.listPrices(productId);
        return prices.map((price) => ({
          id: price.id,
          product: typeof price.product === 'string' ? price.product : (price.product as any)?.name,
          currency: price.currency,
          unit_amount: price.unit_amount,
          interval: price.recurring?.interval,
          interval_count: price.recurring?.interval_count,
        }));
      }

      @Get('customer')
      @ApiOperation({ summary: 'Get Stripe customer for current tenant' })
      async getCustomer(@CurrentUser() user: RequestUser) {
        const customer = await this.stripeService.findCustomerByTenantId(user.tenant_id);

        Iif (!customer) {
          return {
            exists: false,
            customer: null,
          };
        }

        return {
          exists: true,
          customer: {
            id: customer.id,
            email: customer.email,
            name: customer.name,
            created: customer.created,
          },
        };
      }

      @Post('customer')
      @UseGuards(PermissionsGuard)
      @RequirePermissions('billing:manage')
      @ApiOperation({ summary: 'Create Stripe customer for tenant' })
      async createCustomer(
        @CurrentUser() user: RequestUser,
        @Body() body: { email: string; name?: string },
      ) {
        const existingCustomer = await this.stripeService.findCustomerByTenantId(user.tenant_id);

        Iif (existingCustomer) {
          return {
            created: false,
            customer: {
              id: existingCustomer.id,
              email: existingCustomer.email,
              name: existingCustomer.name,
            },
            message: 'Customer already exists',
          };
        }

        const customer = await this.stripeService.createCustomer({
          tenant_id: user.tenant_id,
          email: body.email,
          name: body.name,
        });

        return {
          created: true,
          customer: {
            id: customer.id,
            email: customer.email,
            name: customer.name,
          },
        };
      }

      @Get('payment-methods')
      @ApiOperation({ summary: 'List Stripe payment methods' })
      async listPaymentMethods(@CurrentUser() user: RequestUser) {
        const customer = await this.stripeService.findCustomerByTenantId(user.tenant_id);

        Iif (!customer) {
          return { payment_methods: [] };
        }

        const paymentMethods = await this.stripeService.listPaymentMethods(customer.id);

        return {
          payment_methods: paymentMethods.map((pm) => ({
            id: pm.id,
            type: pm.type,
            card: pm.card
              ? {
                  brand: pm.card.brand,
                  last4: pm.card.last4,
                  exp_month: pm.card.exp_month,
                  exp_year: pm.card.exp_year,
                }
              : null,
            created: pm.created,
          })),
        };
      }
    }