const axios = require('axios');

console.log('🔍 简单连通性测试\n');

// 测试直连
async function testDirect() {
  console.log('1. 测试直连...');
  
  const urls = [
    'https://httpbin.org/get',
    'https://www.google.com',
    'https://www.github.com'
  ];
  
  for (const url of urls) {
    try {
      console.log(`   尝试: ${url}`);
      const start = Date.now();
      const response = await axios.get(url, {
        timeout: 10000,
        headers: {
          'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36'
        }
      });
      const latency = Date.now() - start;
      
      console.log(`   ✅ 成功: ${latency}ms (状态码: ${response.status})`);
      return true;
    } catch (error) {
      console.log(`   ❌ 失败: ${error.message}`);
    }
  }
  
  console.log('   ❌ 所有直连测试都失败了');
  return false;
}

// 测试本地代理端口
async function testLocalProxy() {
  console.log('\n2. 测试本地代理端口...');
  
  const net = require('net');
  const ports = [8080, 1080, 7890, 7891, 8118, 3128];
  
  for (const port of ports) {
    try {
      const socket = new net.Socket();
      const result = await new Promise((resolve) => {
        socket.setTimeout(3000);
        socket.on('connect', () => {
          socket.destroy();
          resolve(true);
        });
        socket.on('timeout', () => {
          socket.destroy();
          resolve(false);
        });
        socket.on('error', () => {
          socket.destroy();
          resolve(false);
        });
        socket.connect(port, '127.0.0.1');
      });
      
      if (result) {
        console.log(`   ✅ 端口 ${port} 可连接`);
      } else {
        console.log(`   ❌ 端口 ${port} 不可连接`);
      }
    } catch (error) {
      console.log(`   ❌ 端口 ${port} 测试失败: ${error.message}`);
    }
  }
}

// 测试HTTP代理
async function testHttpProxy() {
  console.log('\n3. 测试HTTP代理...');
  
  try {
    const { HttpsProxyAgent } = require('https-proxy-agent');
    const proxyUrl = 'http://127.0.0.1:7897';
    const agent = new HttpsProxyAgent(proxyUrl);
    
    const response = await axios.get('https://httpbin.org/get', {
      httpsAgent: agent,
      timeout: 10000,
      headers: {
        'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36'
      }
    });
    
    console.log(`   ✅ HTTP代理测试成功: ${response.status}`);
    console.log(`   IP: ${response.data.origin}`);
  } catch (error) {
    console.log(`   ❌ HTTP代理测试失败: ${error.message}`);
  }
}

// 测试SOCKS5代理
async function testSocks5Proxy() {
  console.log('\n4. 测试SOCKS5代理...');
  
  try {
    const { SocksProxyAgent } = require('socks-proxy-agent');
    const proxyUrl = 'socks5://127.0.0.1:7897';
    const agent = new SocksProxyAgent(proxyUrl);
    
    const response = await axios.get('https://httpbin.org/get', {
      httpsAgent: agent,
      timeout: 10000,
      headers: {
        'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36'
      }
    });
    
    console.log(`   ✅ SOCKS5代理测试成功: ${response.status}`);
    console.log(`   IP: ${response.data.origin}`);
  } catch (error) {
    console.log(`   ❌ SOCKS5代理测试失败: ${error.message}`);
  }
}

// 主函数
async function main() {
  const directSuccess = await testDirect();
  
  if (!directSuccess) {
    console.log('\n⚠️  直连测试失败，请检查网络连接');
    console.log('可能的原因:');
    console.log('- 网络连接问题');
    console.log('- 防火墙阻止');
    console.log('- DNS解析问题');
    return;
  }
  
  await testLocalProxy();
  await testHttpProxy();
  await testSocks5Proxy();
  
  console.log('\n📋 测试完成');
  console.log('如果直连成功但代理测试失败，说明:');
  console.log('1. 代理服务未运行');
  console.log('2. 代理端口配置错误');
  console.log('3. 代理配置有问题');
}

main().catch(console.error);