import { createFrameworkApp, type FrameworkUserbaseConfig } from "userbase/adapter";

export type TanstackStartEnv = NodeJS.ProcessEnv;

export type TanstackStartConfig<Env = TanstackStartEnv> = FrameworkUserbaseConfig<Env>;

/**
 * Get userbase app instance
 * @param config - userbase configuration
 * @param args - environment variables
 */
export async function getApp<Env = TanstackStartEnv>(
   config: TanstackStartConfig<Env> = {},
   args: Env = process.env as Env,
) {
   return await createFrameworkApp(config, args);
}

/**
 * Create request handler for src/routes/api.$.ts
 * @param config - userbase configuration
 * @param args - environment variables
 */
export function serve<Env = TanstackStartEnv>(
   config: TanstackStartConfig<Env> = {},
   args: Env = process.env as Env,
) {
   return async (request: Request) => {
      const app = await getApp(config, args);
      return app.fetch(request);
   };
}