import { Body, Controller, Get, Param, ParseUUIDPipe, Post } from "@nestjs/common";
import { ApiBearerAuth, ApiOperation, ApiTags } from "@nestjs/swagger";

import { BookingStaff } from "../../common/booking-guards";
import { FREIGHT_PERMS } from "../../seed/freight-permissions.registry";
import { ResolveEimsRegistrationDto } from "./dto/resolve-eims-registration.dto";
import { EimsInvoiceRegistrationService } from "./eims-invoice-registration.service";

/**
 * Staff-triggered EIMS actions on an existing invoice. Registration is manual and one invoice at a
 * time — nothing in invoice creation submits automatically.
 *
 * Filing gets its own permission (`invoices:eims_register`) rather than riding on an existing key:
 * registration is irreversible at MoR, so it must not follow from the right to download a PDF.
 * The key is seeded through FINANCE_PERMISSIONS, which reaches `iam.permissions` via
 * ADVANCED_BACKOFFICE_PERMISSIONS → BOOKING_RULE_ENGINE_PERMISSIONS → EDR_FREIGHT_PERMISSIONS.
 */
@ApiTags("eims")
@ApiBearerAuth()
@Controller("invoices")
export class EimsInvoiceController {
  constructor(private readonly registration: EimsInvoiceRegistrationService) {}

  @Post(":id/eims/register")
  @BookingStaff(FREIGHT_PERMS.invoices.eimsRegister)
  @ApiOperation({
    summary:
      "Register the invoice with MoR EIMS. Idempotent — an invoice that already has an IRN is returned unchanged.",
  })
  register(@Param("id", ParseUUIDPipe) id: string) {
    return this.registration.registerInvoiceWithEims(id);
  }

  @Post(":id/eims/verify")
  @BookingStaff(FREIGHT_PERMS.invoices.eimsRegister)
  @ApiOperation({ summary: "Verify the invoice's stored IRN against EIMS" })
  verify(@Param("id", ParseUUIDPipe) id: string) {
    return this.registration.verifyInvoiceWithEims(id);
  }

  @Post(":id/eims/resolve")
  @BookingStaff(FREIGHT_PERMS.invoices.eimsRegister)
  @ApiOperation({
    summary:
      "Resolve an unacknowledged submission: record the IRN confirmed with MoR, or discard it. Clears the system-wide block.",
  })
  resolve(
    @Param("id", ParseUUIDPipe) id: string,
    @Body() dto: ResolveEimsRegistrationDto,
  ) {
    return this.registration.resolveEimsRegistration(id, dto);
  }

  @Get(":id/eims/status")
  @BookingStaff(FREIGHT_PERMS.invoices.view)
  @ApiOperation({ summary: "EIMS registration status, IRN and last error for the invoice" })
  status(@Param("id", ParseUUIDPipe) id: string) {
    return this.registration.getEimsStatus(id);
  }
}