import { startMockServer } from "./mock-server.js";
import http from "http";

let server: http.Server | null = null;

export default async function setup() {
  const defaultUrl = process.env.API_URL || "http://localhost:3001";
  let useLocalMock = false;

  try {
    // Send a health check request with a timeout
    const controller = new AbortController();
    const timeoutId = setTimeout(() => controller.abort(), 1000);
    
    const res = await fetch(`${defaultUrl}/health`, { signal: controller.signal });
    clearTimeout(timeoutId);

    if (res.ok) {
      const data = await res.json() as any;
      // If port 3001 is running the Nova bot, or doesn't match coaxys panel body
      if (data && data.agent === "Nova") {
        useLocalMock = true;
      }
    } else {
      useLocalMock = true;
    }
  } catch {
    useLocalMock = true;
  }

  if (useLocalMock) {
    const mockPort = 3009;
    server = startMockServer(mockPort);
    process.env.API_URL = `http://localhost:${mockPort}`;
    console.log(`[E2E Setup] CoaxysPanel mock backend server started on port ${mockPort}`);
  } else {
    process.env.API_URL = defaultUrl;
    console.log(`[E2E Setup] Testing against existing API_URL: ${process.env.API_URL}`);
  }

  // Teardown hook executed by Vitest after all tests complete
  return async () => {
    if (server) {
      await new Promise<void>((resolve, reject) => {
        server!.close((err) => {
          if (err) reject(err);
          else resolve();
        });
      });
      console.log("[E2E Teardown] CoaxysPanel mock backend server stopped");
    }
  };
}