#!/usr/bin/env node

/**
 * WebSocket Test Client
 * Simple script to test WebSocket connection and subscriptions
 *
 * Usage:
 *   node test-websocket.js
 */

const WebSocket = require('ws');

const WS_URL = 'ws://localhost:3000/ws';

console.log('OrbiQuant WebSocket Test Client');
console.log('================================\n');

const ws = new WebSocket(WS_URL);

let messageCount = 0;
const startTime = Date.now();

ws.on('open', () => {
  console.log('✅ Connected to WebSocket server');
  console.log(`   URL: ${WS_URL}\n`);

  // Subscribe to multiple channels
  console.log('📡 Subscribing to channels...');
  ws.send(JSON.stringify({
    type: 'subscribe',
    channels: [
      'price:BTCUSDT',
      'ticker:ETHUSDT',
      'klines:BTCUSDT:1m'
    ]
  }));
});

ws.on('message', (data) => {
  messageCount++;
  const msg = JSON.parse(data.toString());

  const elapsed = ((Date.now() - startTime) / 1000).toFixed(1);

  switch (msg.type) {
    case 'connected':
      console.log(`\n🔌 Server welcome message:`);
      console.log(`   Client ID: ${msg.data.clientId}`);
      console.log(`   Authenticated: ${msg.data.authenticated}`);
      console.log(`   Timestamp: ${msg.data.timestamp}\n`);
      break;

    case 'subscribed':
      console.log(`✅ Subscribed to: ${msg.channel}`);
      break;

    case 'price':
      console.log(`[${elapsed}s] 💰 PRICE UPDATE - ${msg.data.symbol}`);
      console.log(`   Price: $${msg.data.price.toLocaleString()}`);
      console.log(`   24h Change: ${msg.data.changePercent24h >= 0 ? '+' : ''}${msg.data.changePercent24h.toFixed(2)}%`);
      console.log(`   Volume: ${msg.data.volume24h.toLocaleString()}\n`);
      break;

    case 'ticker':
      console.log(`[${elapsed}s] 📊 TICKER UPDATE - ${msg.data.symbol}`);
      console.log(`   Price: $${msg.data.price.toLocaleString()}`);
      console.log(`   Bid/Ask: $${msg.data.bid} / $${msg.data.ask}`);
      console.log(`   24h: ${msg.data.changePercent >= 0 ? '+' : ''}${msg.data.changePercent.toFixed(2)}%`);
      console.log(`   High/Low: $${msg.data.high} / $${msg.data.low}\n`);
      break;

    case 'kline':
      const kline = msg.data;
      console.log(`[${elapsed}s] 📈 KLINE UPDATE - ${kline.symbol} (${kline.interval})`);
      console.log(`   O: $${kline.open} H: $${kline.high} L: $${kline.low} C: $${kline.close}`);
      console.log(`   Volume: ${kline.volume.toFixed(4)}`);
      console.log(`   Status: ${kline.isFinal ? '✓ Closed' : '⏳ Updating'}\n`);
      break;

    case 'trade':
      console.log(`[${elapsed}s] 💸 TRADE - ${msg.data.symbol}`);
      console.log(`   ${msg.data.side.toUpperCase()}: ${msg.data.quantity} @ $${msg.data.price}\n`);
      break;

    case 'pong':
      console.log(`[${elapsed}s] 🏓 Pong received (heartbeat OK)\n`);
      break;

    case 'error':
      console.error(`[${elapsed}s] ❌ ERROR:`);
      console.error(`   ${msg.data.message}\n`);
      break;

    default:
      console.log(`[${elapsed}s] 📨 ${msg.type}:`, JSON.stringify(msg.data || {}, null, 2), '\n');
  }
});

ws.on('error', (error) => {
  console.error('\n❌ WebSocket Error:', error.message);
  console.error('\nTroubleshooting:');
  console.error('1. Make sure backend server is running: npm run dev');
  console.error('2. Check if port 3000 is accessible');
  console.error('3. Verify WebSocket endpoint: ws://localhost:3000/ws\n');
});

ws.on('close', () => {
  console.log(`\n👋 Disconnected from server`);
  console.log(`   Total messages received: ${messageCount}`);
  console.log(`   Duration: ${((Date.now() - startTime) / 1000).toFixed(1)}s\n`);
  process.exit(0);
});

// Send ping every 30 seconds
const pingInterval = setInterval(() => {
  if (ws.readyState === WebSocket.OPEN) {
    console.log('🏓 Sending ping...');
    ws.send(JSON.stringify({ type: 'ping' }));
  }
}, 30000);

// Auto-disconnect after 60 seconds (for testing)
setTimeout(() => {
  console.log('\n⏰ Test duration reached (60s), disconnecting...');
  clearInterval(pingInterval);
  ws.close();
}, 60000);

// Handle Ctrl+C gracefully
process.on('SIGINT', () => {
  console.log('\n\n⚠️  Interrupted by user');
  clearInterval(pingInterval);
  ws.close();
});

console.log('⏳ Connecting to WebSocket server...');
console.log('   (Test will run for 60 seconds, or press Ctrl+C to stop)\n');