import { createCopilotEndpointSingleRoute } from "../../../v2/runtime";
import { CreateCopilotRuntimeServerOptions, getCommonConfig } from "../shared";
import telemetry, {
  getRuntimeInstanceTelemetryInfo,
} from "../../telemetry-client";
import { handle } from "hono/vercel";

export function copilotRuntimeNextJSAppRouterEndpoint(
  options: CreateCopilotRuntimeServerOptions,
) {
  const commonConfig = getCommonConfig(options);

  telemetry.setGlobalProperties({
    runtime: {
      framework: "nextjs-app-router",
    },
  });

  if (options.properties?._copilotkit) {
    telemetry.setGlobalProperties({
      _copilotkit: options.properties._copilotkit,
    });
  }

  telemetry.capture(
    "oss.runtime.instance_created",
    getRuntimeInstanceTelemetryInfo(options),
  );

  const logger = commonConfig.logging;
  logger.debug("Creating NextJS App Router endpoint");

  const serviceAdapter = options.serviceAdapter;
  if (serviceAdapter) {
    options.runtime.handleServiceAdapter(serviceAdapter);
  }

  // Note: cors option requires @copilotkit/runtime with credentials support
  const copilotRoute = createCopilotEndpointSingleRoute({
    runtime: options.runtime.instance,
    basePath: options.baseUrl ?? options.endpoint,
    ...(options.cors && { cors: options.cors }),
  } as any);

  const handleRequest = handle(copilotRoute as any);
  return { handleRequest };
}