import type { NextRequest } from "next/server";
import {
  paymentCertificationCommandSchema,
  paymentProviderReferenceSchema,
} from "@salixcommerce/core";
import {
  CART_CAPABILITY_COOKIE,
  hashCartCapability,
  parseCartCapability,
} from "@/server/commerce/capability";
import { errorResponse, validateJsonMutationRequest } from "@/server/commerce/http";
import { paymentResultResponse } from "@/server/payments/http";
import { paymentService } from "@/server/payments/payments";

export const runtime = "nodejs";

export async function POST(
  request: NextRequest,
  context: RouteContext<"/api/payments/[reference]/simulate">,
) {
  const requestGate = validateJsonMutationRequest(request);
  if (!requestGate.ok) return requestGate.response;

  const [body, routeParams] = await Promise.all([readJson(request), context.params]);
  const parsedBody = paymentCertificationCommandSchema.safeParse(body);
  const parsedReference = paymentProviderReferenceSchema.safeParse(routeParams.reference);
  if (!parsedBody.success || !parsedReference.success) {
    return errorResponse("INVALID_REQUEST", "Invalid fake payment request.", 400);
  }

  const capability = parseCartCapability(request.cookies.get(CART_CAPABILITY_COOKIE)?.value);
  if (capability === null) return errorResponse("PAYMENT_NOT_FOUND", "Payment not found.", 404);
  return paymentResultResponse(
    await paymentService.simulateCertificationEvent({
      capabilityHash: hashCartCapability(capability),
      command: parsedBody.data,
      providerPaymentReference: parsedReference.data,
    }),
  );
}

async function readJson(request: NextRequest): Promise<unknown> {
  try {
    return await request.json();
  } catch {
    return undefined;
  }
}