const https = require('https');
const http = require('http');
const io = require('socket.io-client');

console.log('🔍 测试HTTP重定向和WebSocket配置');
console.log('='.repeat(50));

// 1. 测试HTTP重定向
async function testHttpRedirect() {
  console.log('\n1️⃣ 测试HTTP重定向...');
  
  return new Promise((resolve) => {
    const options = {
      hostname: 'whaletownend.xinghangee.icu',
      port: 80,
      path: '/',
      method: 'GET',
      timeout: 10000
    };

    const req = http.request(options, (res) => {
      console.log(`📊 HTTP状态码: ${res.statusCode}`);
      console.log('📋 响应头:');
      Object.entries(res.headers).forEach(([key, value]) => {
        console.log(`   ${key}: ${value}`);
      });
      
      if (res.statusCode === 301 || res.statusCode === 302) {
        console.log('✅ HTTP重定向配置正确');
        console.log(`🔄 重定向到: ${res.headers.location}`);
      } else if (res.statusCode === 200) {
        console.log('⚠️  HTTP没有重定向，直接返回内容');
      } else {
        console.log(`❌ HTTP重定向异常: ${res.statusCode}`);
      }
      
      resolve({ statusCode: res.statusCode, location: res.headers.location });
    });

    req.on('error', (error) => {
      console.log(`❌ HTTP连接失败: ${error.message}`);
      resolve({ error: error.message });
    });

    req.on('timeout', () => {
      console.log('❌ HTTP连接超时');
      req.destroy();
      resolve({ error: 'timeout' });
    });

    req.end();
  });
}

// 2. 测试WebSocket升级映射
async function testWebSocketUpgradeMapping() {
  console.log('\n2️⃣ 测试WebSocket升级映射...');
  
  // 检查nginx是否有$connection_upgrade映射
  return new Promise((resolve) => {
    const options = {
      hostname: 'whaletownend.xinghangee.icu',
      port: 443,
      path: '/socket.io/?EIO=4&transport=websocket',
      method: 'GET',
      headers: {
        'Upgrade': 'websocket',
        'Connection': 'Upgrade',
        'Sec-WebSocket-Key': 'dGhlIHNhbXBsZSBub25jZQ==',
        'Sec-WebSocket-Version': '13',
        'Origin': 'https://whaletownend.xinghangee.icu'
      },
      timeout: 8000
    };

    const req = https.request(options, (res) => {
      console.log(`📊 WebSocket握手状态码: ${res.statusCode}`);
      console.log('📋 WebSocket响应头:');
      Object.entries(res.headers).forEach(([key, value]) => {
        console.log(`   ${key}: ${value}`);
      });
      
      if (res.statusCode === 101) {
        console.log('✅ WebSocket升级成功');
      } else if (res.statusCode === 400) {
        console.log('❌ WebSocket升级失败 - 400错误');
        console.log('💡 可能缺少 $connection_upgrade 映射');
      } else if (res.statusCode === 502) {
        console.log('❌ WebSocket升级失败 - 502错误');
        console.log('💡 后端连接问题');
      } else {
        console.log(`❌ WebSocket升级失败 - ${res.statusCode}错误`);
      }
      
      resolve({ statusCode: res.statusCode });
    });

    req.on('error', (error) => {
      console.log(`❌ WebSocket握手失败: ${error.message}`);
      resolve({ error: error.message });
    });

    req.on('timeout', () => {
      console.log('❌ WebSocket握手超时');
      req.destroy();
      resolve({ error: 'timeout' });
    });

    req.end();
  });
}

// 3. 测试WS协议是否能通过重定向工作
async function testWSProtocolWithRedirect() {
  console.log('\n3️⃣ 测试WS协议重定向...');
  
  return new Promise((resolve) => {
    console.log('🧪 尝试连接 ws://whaletownend.xinghangee.icu/game');
    
    const socket = io('ws://whaletownend.xinghangee.icu/game', {
      transports: ['websocket'],
      timeout: 8000,
      forceNew: true
    });
    
    let resolved = false;
    
    const timeout = setTimeout(() => {
      if (!resolved) {
        resolved = true;
        socket.disconnect();
        console.log('   ❌ WS协议连接超时');
        resolve({ success: false, error: 'timeout' });
      }
    }, 8000);
    
    socket.on('connect', () => {
      if (!resolved) {
        resolved = true;
        clearTimeout(timeout);
        console.log('   ✅ WS协议连接成功（通过重定向）');
        console.log(`   📡 Socket ID: ${socket.id}`);
        console.log(`   🔗 实际URL: ${socket.io.uri}`);
        socket.disconnect();
        resolve({ success: true, actualUrl: socket.io.uri });
      }
    });
    
    socket.on('connect_error', (error) => {
      if (!resolved) {
        resolved = true;
        clearTimeout(timeout);
        console.log(`   ❌ WS协议连接失败: ${error.message}`);
        console.log(`   🔍 错误详情: ${error.description?.message || 'N/A'}`);
        resolve({ success: false, error: error.message });
      }
    });
  });
}

async function runRedirectTests() {
  const httpResult = await testHttpRedirect();
  const websocketResult = await testWebSocketUpgradeMapping();
  const wsProtocolResult = await testWSProtocolWithRedirect();
  
  console.log('\n' + '='.repeat(50));
  console.log('📊 重定向和WebSocket测试结果');
  console.log('='.repeat(50));
  
  console.log(`1. HTTP重定向: ${httpResult.statusCode === 301 || httpResult.statusCode === 302 ? '✅ 配置正确' : '❌ 未配置或异常'}`);
  if (httpResult.location) {
    console.log(`   重定向目标: ${httpResult.location}`);
  }
  
  console.log(`2. WebSocket升级: ${websocketResult.statusCode === 101 ? '✅ 正常' : '❌ 失败'}`);
  
  console.log(`3. WS协议重定向: ${wsProtocolResult.success ? '✅ 工作' : '❌ 不工作'}`);
  
  console.log('\n💡 分析结果:');
  
  if (httpResult.statusCode === 301 || httpResult.statusCode === 302) {
    console.log('✅ HTTP重定向配置正确');
  } else {
    console.log('❌ 缺少HTTP重定向配置');
    console.log('🔧 需要添加HTTP server块进行重定向');
  }
  
  if (websocketResult.statusCode !== 101) {
    console.log('❌ WebSocket升级配置有问题');
    console.log('🔧 需要检查nginx配置中的:');
    console.log('   1. map $http_upgrade $connection_upgrade 映射');
    console.log('   2. proxy_set_header Upgrade $http_upgrade');
    console.log('   3. proxy_set_header Connection $connection_upgrade');
  }
  
  if (!wsProtocolResult.success) {
    console.log('❌ WS协议无法通过重定向工作');
    console.log('💡 原因: WebSocket协议升级发生在TCP层，无法像HTTP那样重定向');
    console.log('📝 解决方案: 客户端应该直接使用WSS协议');
  }
  
  process.exit(0);
}

runRedirectTests().catch(console.error);