const WebSocket = require('ws');
const readline = require('readline');
const mysql = require('mysql2/promise');

// 数据库连接配置
const dbConfig = {
  host: 'localhost',
  user: 'root',
  password: '123456',
  database: 'wechat_app'
};

// 测试配置
const TEST_CONFIG = {
  wsUrl: 'ws://localhost:3003',
  testUserId: 'test_user_' + Date.now(),
  testManagerId: '22',
  testMessage: '这是一条测试消息 ' + Date.now()
};

// 创建命令行交互界面
const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout
});

// WebSocket测试客户端
class WebSocketTestClient {
  constructor() {
    this.ws = null;
    this.authenticated = false;
    this.messages = [];
    this.connectionAttempts = 0;
    this.maxAttempts = 3;
  }

  connect(serverUrl = TEST_CONFIG.wsUrl) {
    console.log(`正在连接到服务器: ${serverUrl}`);
    this.connectionAttempts++;
    
    this.ws = new WebSocket(serverUrl);

    this.ws.on('open', () => {
      console.log('✅ WebSocket连接已建立');
      this.connectionAttempts = 0; // 重置连接尝试次数
      this.authenticate();
    });

    this.ws.on('message', (data) => {
      try {
        const message = JSON.parse(data.toString());
        console.log('📨 收到消息:', JSON.stringify(message, null, 2));
        this.handleMessage(message);
      } catch (error) {
        console.error('❌ 解析消息失败:', error);
      }
    });

    this.ws.on('error', (error) => {
      console.error('❌ WebSocket错误:', error.message);
    });

    this.ws.on('close', (code, reason) => {
      console.log(`🔌 WebSocket连接已关闭: ${code} - ${reason}`);
      this.authenticated = false;
      
      // 如果不是主动关闭，尝试重连
      if (this.connectionAttempts < this.maxAttempts) {
        console.log(`尝试重连 (${this.connectionAttempts}/${this.maxAttempts})...`);
        setTimeout(() => this.connect(serverUrl), 2000);
      }
    });
  }

  authenticate() {
    console.log('正在发送认证信息...');
    const authMessage = {
      type: 'auth',
      userId: TEST_CONFIG.testUserId,
      userType: 'user',
      timestamp: Date.now()
    };
    
    console.log('🔑 发送认证请求:', JSON.stringify(authMessage));
    this.sendMessage(authMessage);
  }

  handleMessage(message) {
    // 存储接收到的消息
    this.messages.push(message);

    if (message.type === 'auth_success') {
      console.log('✅ 认证成功！');
      this.authenticated = true;
      this.sendTestMessage();
    } else if (message.type === 'auth_error') {
      console.error('❌ 认证失败:', message.message);
    } else if (message.type === 'message_sent') {
      console.log('✅ 消息发送成功确认:', message.payload);
      console.log('消息ID:', message.payload.messageId);
      console.log('会话ID:', message.payload.conversationId);
    } else if (message.type === 'new_message') {
      console.log('📥 收到新消息:', message.payload);
      this.messages.push(message.payload);
    } else if (message.type === 'error') {
      console.error('❌ 收到错误消息:', message.message);
    }
  }
  
  // 数据库查询函数
  async queryDatabase() {
    let connection = null;
    try {
      console.log('\n🔍 查询数据库验证消息存储...');
      connection = await mysql.createConnection(dbConfig);
      
      // 查询最新消息
      const [messages] = await connection.execute(
        `SELECT * FROM chat_messages 
         ORDER BY created_at DESC 
         LIMIT 5`
      );
      
      if (messages.length > 0) {
        console.log(`\n📊 找到 ${messages.length} 条最新消息:`);
        let testMessageFound = false;
        
        messages.forEach((msg, index) => {
          console.log(`\n--- 消息 ${index + 1} ---`);
          console.log(`消息ID: ${msg.message_id}`);
          console.log(`会话ID: ${msg.conversation_id}`);
          console.log(`发送者ID: ${msg.sender_id}`);
          console.log(`内容: ${msg.content}`);
          
          if (msg.content === TEST_CONFIG.testMessage) {
            console.log('✅ 测试消息已成功存储到数据库!');
            testMessageFound = true;
          }
        });
        
        if (!testMessageFound) {
          console.log('\n⚠️  未找到测试消息');
        }
      } else {
        console.log('\n❌ 未找到任何消息记录');
      }
      
      // 查询最新会话
      const [conversations] = await connection.execute(
        `SELECT * FROM chat_conversations 
         ORDER BY created_at DESC 
         LIMIT 5`
      );
      
      if (conversations.length > 0) {
        console.log(`\n📋 找到 ${conversations.length} 条最新会话:`);
        conversations.forEach((conv, index) => {
          console.log(`\n--- 会话 ${index + 1} ---`);
          console.log(`会话ID: ${conv.conversation_id}`);
          console.log(`用户ID: ${conv.userId}`);
          console.log(`客服ID: ${conv.managerId}`);
        });
      }
      
    } catch (error) {
      console.error('\n❌ 数据库查询失败:', error.message);
    } finally {
      if (connection) {
        await connection.end();
      }
    }
  }

  sendTestMessage() {
    // 生成临时会话ID（前端格式: temp_[currentUserId]_[targetId]_[timestamp]）
    const timestamp = Date.now();
    const tempConversationId = `temp_${TEST_CONFIG.testUserId}_${TEST_CONFIG.testManagerId}_${timestamp}`;
    
    console.log(`📝 生成的临时会话ID: ${tempConversationId}`);
    
    const testMessage = {
      type: 'chat_message',
      conversationId: tempConversationId,
      receiverId: TEST_CONFIG.testManagerId,
      senderId: TEST_CONFIG.testUserId,
      senderType: 1,
      content: TEST_CONFIG.testMessage,
      contentType: 1,
      messageId: 'test_msg_' + Date.now(),
      timestamp: Date.now()
    };
    
    console.log('📤 发送测试消息:', JSON.stringify(testMessage));
    this.sendMessage(testMessage);
    
    // 发送后自动查询数据库验证
    setTimeout(() => {
      this.queryDatabase().catch(console.error);
    }, 2000);
  }

  testDatabaseStorage() {
    console.log('\n=======================================');
    console.log('📊 测试数据库存储功能');
    console.log('将自动查询数据库验证消息存储');
    console.log('=======================================\n');
    
    // 自动查询数据库
    this.queryDatabase().catch(console.error);
    
    // 询问用户是否要发送更多消息
    this.promptForMoreMessages();
  }

  promptForMoreMessages() {
    rl.question('是否发送另一条测试消息？(y/n): ', (answer) => {
      if (answer.toLowerCase() === 'y') {
        this.sendTestMessage();
      } else {
        console.log('\n测试完成！按Ctrl+C退出。');
      }
    });
  }

  sendMessage(message) {
    if (this.ws && this.ws.readyState === WebSocket.OPEN) {
      this.ws.send(JSON.stringify(message));
    } else {
      console.error('❌ WebSocket未连接，无法发送消息');
    }
  }

  close() {
    if (this.ws) {
      this.ws.close();
    }
    rl.close();
  }
}

// 自动测试函数
async function autoTest() {
  console.log('\n========================================');
  console.log('开始自动测试消息存储功能');
  console.log('========================================\n');
  
  const client = new WebSocketTestClient();
  
  // 重写handleMessage以支持自动测试
  const originalHandleMessage = client.handleMessage.bind(client);
  client.handleMessage = function(message) {
    originalHandleMessage(message);
    
    if (message.type === 'message_sent') {
      // 消息发送成功后查询数据库
      setTimeout(() => {
        client.queryDatabase().then(() => {
          console.log('\n========================================');
          console.log('自动测试完成');
          console.log('========================================');
          process.exit(0);
        });
      }, 2000);
    }
  };
  
  client.connect();
}

// 启动测试客户端
console.log('=======================================');
console.log('🚀 消息存储测试工具');
console.log('这个工具将测试WebSocket连接、认证和消息存储功能');
console.log('=======================================\n');

// 自动模式运行
console.log('🎯 以自动测试模式运行...');
autoTest();

// 处理进程终止
process.on('SIGINT', () => {
  console.log('\n正在关闭连接...');
  process.exit(0);
});