// WebSocket连接诊断工具
class WebSocketDiagnostic {
  constructor() {
    this.testResults = [];
  }

  // 🔥 ===== 全面诊断WebSocket连接问题 =====
  
  async runFullDiagnostic() {
    console.log('🔍 开始WebSocket连接全面诊断...');
    this.testResults = [];
    
    // 1. 检查基础环境
    await this.checkEnvironment();
    
    // 2. 检查认证信息
    await this.checkAuthentication();
    
    // 3. 测试网络连接
    await this.testNetworkConnectivity();
    
    // 4. 测试WebSocket连接
    await this.testWebSocketConnection();
    
    // 5. 生成诊断报告
    this.generateReport();
    
    return this.testResults;
  }

  // 检查基础环境
  async checkEnvironment() {
    console.log('📱 检查小程序环境...');
    
    try {
      // 使用新的API替代已弃用的wx.getSystemInfoSync
      const deviceInfo = wx.getDeviceInfo();
      const appBaseInfo = wx.getAppBaseInfo();
      const accountInfo = wx.getAccountInfoSync();
      
      const envInfo = {
        platform: deviceInfo.platform,
        version: appBaseInfo.version,
        SDKVersion: appBaseInfo.SDKVersion,
        appId: accountInfo.miniProgram.appId,
        envVersion: accountInfo.miniProgram.envVersion
      };
      
      console.log('📱 环境信息:', envInfo);
      
      this.testResults.push({
        test: '环境检查',
        status: 'success',
        data: envInfo
      });
      
    } catch (error) {
      console.error('❌ 环境检查失败:', error);
      this.testResults.push({
        test: '环境检查',
        status: 'error',
        error: error.message
      });
    }
  }

  // 检查认证信息
  async checkAuthentication() {
    console.log('🔑 检查认证信息...');
    
    try {
      // 获取token
      const userInfo = wx.getStorageSync('userInfo');
      const directToken = wx.getStorageSync('token');
      const app = getApp();
      const appToken = app?.globalData?.userInfo?.token;
      
      const authInfo = {
        hasUserInfo: !!userInfo,
        hasUserInfoToken: !!(userInfo?.token),
        hasDirectToken: !!directToken,
        hasAppToken: !!appToken,
        userInfoTokenLength: userInfo?.token?.length || 0,
        directTokenLength: directToken?.length || 0,
        appTokenLength: appToken?.length || 0
      };
      
      console.log('🔑 认证信息:', authInfo);
      
      // 检查token格式
      const token = userInfo?.token || directToken || appToken;
      if (token) {
        authInfo.tokenPrefix = token.substring(0, 20) + '...';
        authInfo.isJWT = token.startsWith('eyJ');
        authInfo.tokenParts = token.split('.').length;
      }
      
      this.testResults.push({
        test: '认证检查',
        status: token ? 'success' : 'error',
        data: authInfo,
        error: token ? null : '未找到有效的认证token'
      });
      
    } catch (error) {
      console.error('❌ 认证检查失败:', error);
      this.testResults.push({
        test: '认证检查',
        status: 'error',
        error: error.message
      });
    }
  }

  // 测试网络连接
  async testNetworkConnectivity() {
    console.log('🌐 测试网络连接...');
    
    try {
      // 检查网络状态
      const networkInfo = await this.getNetworkType();
      console.log('🌐 网络状态:', networkInfo);
      
      // 测试HTTP连接
      const httpTest = await this.testHttpConnection();
      
      this.testResults.push({
        test: '网络连接',
        status: 'success',
        data: {
          network: networkInfo,
          httpTest: httpTest
        }
      });
      
    } catch (error) {
      console.error('❌ 网络连接测试失败:', error);
      this.testResults.push({
        test: '网络连接',
        status: 'error',
        error: error.message
      });
    }
  }

  // 测试WebSocket连接
  async testWebSocketConnection() {
    console.log('🔌 测试WebSocket连接...');
    
    const testUrls = [
      'wss://api.faxianwo.me/api/v1/ws',
      'wss://api.faxianwo.me',
      'wss://api.faxianwo.me/ws'
    ];
    
    const results = [];
    
    for (const url of testUrls) {
      console.log(`🔗 测试URL: ${url}`);
      
      try {
        const result = await this.testSingleWebSocketUrl(url);
        results.push({
          url: url,
          status: result.success ? 'success' : 'error',
          ...result
        });
      } catch (error) {
        results.push({
          url: url,
          status: 'error',
          error: error.message
        });
      }
    }
    
    this.testResults.push({
      test: 'WebSocket连接',
      status: results.some(r => r.status === 'success') ? 'success' : 'error',
      data: results
    });
  }

  // 测试单个WebSocket URL
  testSingleWebSocketUrl(url) {
    return new Promise((resolve) => {
      const startTime = Date.now();
      let resolved = false;
      
      const timeout = setTimeout(() => {
        if (!resolved) {
          resolved = true;
          resolve({
            success: false,
            error: '连接超时',
            duration: Date.now() - startTime
          });
        }
      }, 10000);
      
      try {
        // 获取token
        const userInfo = wx.getStorageSync('userInfo');
        const token = userInfo?.token;
        
        const testWs = wx.connectSocket({
          url: `${url}?device_id=diagnostic_${Date.now()}`,
          header: token ? {
            'Authorization': `Bearer ${token}`
          } : {},
          timeout: 8000
        });
        
        testWs.onOpen((res) => {
          if (!resolved) {
            resolved = true;
            clearTimeout(timeout);
            testWs.close();
            resolve({
              success: true,
              duration: Date.now() - startTime,
              response: res
            });
          }
        });
        
        testWs.onError((error) => {
          if (!resolved) {
            resolved = true;
            clearTimeout(timeout);
            resolve({
              success: false,
              error: error.errMsg || 'WebSocket连接错误',
              duration: Date.now() - startTime,
              errorDetail: error
            });
          }
        });
        
        testWs.onClose((res) => {
          if (!resolved) {
            resolved = true;
            clearTimeout(timeout);
            resolve({
              success: false,
              error: '连接被关闭',
              duration: Date.now() - startTime,
              closeDetail: res
            });
          }
        });
        
      } catch (error) {
        if (!resolved) {
          resolved = true;
          clearTimeout(timeout);
          resolve({
            success: false,
            error: error.message,
            duration: Date.now() - startTime
          });
        }
      }
    });
  }

  // 获取网络类型
  getNetworkType() {
    return new Promise((resolve, reject) => {
      wx.getNetworkType({
        success: resolve,
        fail: reject
      });
    });
  }

  // 测试HTTP连接
  testHttpConnection() {
    return new Promise((resolve) => {
      wx.request({
        url: 'https://api.faxianwo.me/api/v1/health',
        method: 'GET',
        timeout: 5000,
        success: (res) => {
          resolve({
            success: true,
            statusCode: res.statusCode,
            data: res.data
          });
        },
        fail: (error) => {
          resolve({
            success: false,
            error: error.errMsg
          });
        }
      });
    });
  }

  // 生成诊断报告
  generateReport() {
    console.log('📋 生成诊断报告...');
    console.log('='.repeat(50));
    console.log('🔍 WebSocket连接诊断报告');
    console.log('='.repeat(50));

    this.testResults.forEach((result, index) => {
      const status = result.status === 'success' ? '✅' : '❌';
      console.log(`${index + 1}. ${status} ${result.test}`);

      if (result.status === 'error') {
        console.log(`   错误: ${result.error}`);
      }

      if (result.data) {
        console.log(`   数据:`, result.data);

        // 🔥 特别显示WebSocket连接的详细结果
        if (result.test === 'WebSocket连接' && Array.isArray(result.data)) {
          result.data.forEach((wsResult, i) => {
            const wsStatus = wsResult.status === 'success' ? '✅' : '❌';
            console.log(`     ${wsStatus} ${wsResult.url}`);
            if (wsResult.status === 'success') {
              console.log(`       连接时间: ${wsResult.duration}ms`);
            } else {
              console.log(`       错误: ${wsResult.error}`);
              if (wsResult.errorDetail) {
                console.log(`       详情:`, wsResult.errorDetail);
              }
            }
          });
        }
      }

      console.log('');
    });

    // 生成建议
    this.generateSuggestions();
  }

  // 生成修复建议
  generateSuggestions() {
    console.log('💡 修复建议:');
    
    const authResult = this.testResults.find(r => r.test === '认证检查');
    const wsResult = this.testResults.find(r => r.test === 'WebSocket连接');
    
    if (authResult?.status === 'error') {
      console.log('1. 🔑 认证问题：请确保用户已正确登录并保存了token');
    }
    
    if (wsResult?.status === 'error') {
      const wsData = wsResult.data || [];
      const hasUrlError = wsData.some(r => r.error && r.error.includes('url not in domain list'));
      
      if (hasUrlError) {
        console.log('2. 🌐 域名配置问题：请在微信公众平台配置WebSocket合法域名');
        console.log('   - 登录 mp.weixin.qq.com');
        console.log('   - 开发 -> 开发管理 -> 开发设置');
        console.log('   - 添加 wss://api.faxianwo.me 到WebSocket合法域名');
      } else {
        console.log('2. 🔌 WebSocket连接问题：请检查网络环境和后端服务状态');
      }
    }
    
    console.log('='.repeat(50));
  }
}

// 创建全局单例
const wsdiagnostic = new WebSocketDiagnostic();

module.exports = wsdiagnostic;