import {
  Body,
  Controller,
  HttpCode,
  HttpStatus,
  Post,
  UseGuards,
} from "@nestjs/common";
import { ApiOperation, ApiTags } from "@nestjs/swagger";
import { ServiceAuthGuard } from "../../common/guards/service-auth.guard";
import { PaymentEventDto, MarkPaidResponseDto } from "./internal-payments.dto";
import { PaymentsService } from "./payments.service";

/**
 * Consumer side of the payment microservice's outbox relay (docs/payment-service §7.3).
 * Only the payment service may call this (shared service token). Idempotent by design:
 * the relay delivers at-least-once, so duplicates must be harmless. Becomes a queue
 * consumer when RabbitMQ lands — the handler logic is transport-agnostic.
 */
@ApiTags("Internal Payments")
@UseGuards(ServiceAuthGuard)
@Controller("internal/payments")
export class InternalPaymentsController {
  constructor(private readonly paymentsService: PaymentsService) {}

  @Post("mark-paid")
  @HttpCode(HttpStatus.OK)
  @ApiOperation({
    summary:
      "Apply a payment.succeeded/payment.failed event from the payment service (idempotent)",
  })
  async markPaid(@Body() event: PaymentEventDto): Promise<MarkPaidResponseDto> {
    return this.paymentsService.handlePaymentEvent(event);
  }
}