#!/usr/bin/env node
// scripts/test-websocket.ts
//
// Tests Socket.io WebSocket connection and event handling
// Run: npx tsx scripts/test-websocket.ts
// Requires server running.

import 'dotenv/config';
import { io, type Socket } from 'socket.io-client';

const PORT = process.env.PORT || '3001';
const BASE_URL = `http://localhost:${PORT}`;

const PASS = '\x1b[32m✅\x1b[0m';
const FAIL = '\x1b[31m❌\x1b[0m';
let passed = 0;
let failed = 0;

function pass(msg: string) { console.log(`  ${PASS} ${msg}`); passed++; }
function fail(msg: string) { console.log(`  ${FAIL} ${msg}`); failed++; }

function connectSocket(timeout = 5000): Promise<Socket> {
  return new Promise((resolve, reject) => {
    const socket = io(BASE_URL, {
      path: '/ws/socket.io',
      transports: ['websocket', 'polling'],
      timeout,
      reconnection: false,
    });

    const timer = setTimeout(() => {
      socket.disconnect();
      reject(new Error('Connection timeout'));
    }, timeout);

    socket.on('connect', () => {
      clearTimeout(timer);
      resolve(socket);
    });

    socket.on('connect_error', (err) => {
      clearTimeout(timer);
      reject(new Error(`Connection failed: ${err.message}`));
    });
  });
}

async function main() {
  console.log('\n\x1b[1m🔌 ICC WebSocket (Socket.io) Tests\x1b[0m');
  console.log(`   Server: ${BASE_URL}`);
  console.log('═'.repeat(50));

  // Check server is running first
  try {
    await fetch(`${BASE_URL}/api/health`, { signal: AbortSignal.timeout(2000) });
  } catch {
    fail('Server not running');
    console.log('     → Start with: cd packages/server && npx tsx src/index.ts');
    process.exit(1);
  }

  // Test 1: Basic connection
  console.log('\n\x1b[1mConnection\x1b[0m');

  let mainSocket: Socket | null = null;
  try {
    mainSocket = await connectSocket(5000);
    pass(`Socket.io connects successfully (id: ${mainSocket.id})`);
  } catch (error: any) {
    fail(`Socket.io connection failed: ${error.message}`);
    // Try polling-only as fallback info
    console.log('     Trying HTTP polling endpoint...');
    try {
      const res = await fetch(`${BASE_URL}/ws/socket.io/?EIO=4&transport=polling`, { signal: AbortSignal.timeout(3000) });
      if (res.ok) {
        pass('Socket.io HTTP polling endpoint responds');
      } else {
        fail(`Socket.io polling returned ${res.status}`);
      }
    } catch (e: any) {
      fail(`Socket.io polling failed: ${e.message}`);
    }
    printSummary();
    return;
  }

  // Test 2: Multiple concurrent connections (stress test)
  console.log('\n\x1b[1mStress Test\x1b[0m');
  const clients: Socket[] = [];
  let connectFails = 0;

  for (let i = 0; i < 5; i++) {
    try {
      const client = await connectSocket(3000);
      clients.push(client);
    } catch {
      connectFails++;
    }
  }

  if (connectFails === 0) {
    pass('5 concurrent connections handled');
  } else {
    fail(`${connectFails}/5 connections failed`);
  }

  // Clean up
  clients.forEach((c) => c.disconnect());

  // Test 3: Graceful disconnect
  console.log('\n\x1b[1mDisconnect\x1b[0m');
  mainSocket.disconnect();
  await new Promise((r) => setTimeout(r, 500));
  if (!mainSocket.connected) {
    pass('Clean disconnect');
  } else {
    fail('Socket still connected after disconnect');
  }

  // Test 4: Reconnect after disconnect
  try {
    const ws2 = await connectSocket(5000);
    pass('Reconnection after disconnect works');
    ws2.disconnect();
  } catch (e: any) {
    fail(`Reconnection failed: ${e.message}`);
  }

  printSummary();
}

function printSummary() {
  console.log('\n' + '═'.repeat(50));
  console.log(`\x1b[1m📋 Results: ${passed} passed, ${failed} failed\x1b[0m`);
  console.log('═'.repeat(50) + '\n');
  process.exit(failed > 0 ? 1 : 0);
}

main().catch(console.error);