// 测试脚本：验证聊天消息处理中的userId类型不匹配问题
const mysql = require('mysql2/promise');

// 数据库连接配置
const config = {
  host: '1.95.162.61',
  port: 3306,
  user: 'root',
  password: 'schl@2025',
  database: 'wechat_app'
};

async function testMessageProcessing() {
  let connection;
  try {
    // 连接数据库
    connection = await mysql.createConnection(config);
    console.log('数据库连接成功');
    
    // 测试1：验证userId类型不匹配问题
    const testUserId = 'user_1765610275027_qqkb12ws3'; // 字符串类型
    const testManagerId = '22'; // 客服ID
    
    console.log('\n=== 测试场景：模拟用户发送消息 ===');
    console.log(`用户ID (字符串): ${testUserId}`);
    console.log(`客服ID: ${testManagerId}`);
    
    // 尝试创建会话，模拟实际场景中的类型转换问题
    console.log('\n尝试创建会话（模拟应用逻辑）：');
    try {
      // 这里模拟应用中尝试将字符串userId存入int字段的场景
      const [result] = await connection.execute(
        'INSERT INTO chat_conversations (conversation_id, userId, managerId, status) VALUES (UUID(), ?, ?, 1)',
        [testUserId, testManagerId]
      );
      console.log('✓ 会话创建成功');
    } catch (error) {
      console.error('❌ 会话创建失败:', error.message);
      console.log('这验证了userId类型不匹配的问题：字符串类型的userId无法存入int字段');
    }
    
    // 测试2：检查数据库中的现有数据
    console.log('\n=== 检查数据库中的现有数据 ===');
    
    // 检查用户是否存在
    const [users] = await connection.execute(
      'SELECT userId, nickName, avatarUrl FROM users WHERE userId = ?',
      [testUserId]
    );
    
    if (users.length > 0) {
      console.log('✓ 用户存在于users表中:');
      console.log(`  userId: ${users[0].userId} (类型: ${typeof users[0].userId})`);
      console.log(`  nickName: ${users[0].nickName}`);
    } else {
      console.log('❌ 用户不存在于users表中');
    }
    
    // 检查是否存在相关会话
    const [conversations] = await connection.execute(
      'SELECT * FROM chat_conversations WHERE userId = ? OR managerId = ?',
      [testUserId, testManagerId]
    );
    
    console.log(`\n会话数量: ${conversations.length}`);
    if (conversations.length > 0) {
      console.log('现有会话信息:');
      conversations.forEach((conv, index) => {
        console.log(`  会话 ${index + 1}:`);
        console.log(`    conversation_id: ${conv.conversation_id}`);
        console.log(`    userId: ${conv.userId} (类型: ${typeof conv.userId})`);
        console.log(`    managerId: ${conv.managerId}`);
        console.log(`    status: ${conv.status}`);
      });
    }
    
    // 测试3：验证类型转换对查询的影响
    console.log('\n=== 测试类型转换对查询的影响 ===');
    
    // 尝试使用字符串userId查询
    const [stringQuery] = await connection.execute(
      'SELECT * FROM chat_conversations WHERE userId = ?',
      [testUserId]
    );
    console.log(`使用字符串userId查询结果数: ${stringQuery.length}`);
    
    // 尝试转换为数字后查询（这会导致丢失非数字前缀）
    const numericId = parseInt(testUserId);
    console.log(`userId转换为数字: ${numericId} (从原始字符串: ${testUserId})`);
    
    const [numericQuery] = await connection.execute(
      'SELECT * FROM chat_conversations WHERE userId = ?',
      [numericId]
    );
    console.log(`使用数字userId查询结果数: ${numericQuery.length}`);
    
  } catch (error) {
    console.error('测试过程中发生错误:', error);
  } finally {
    if (connection) {
      await connection.end();
      console.log('\n数据库连接已关闭');
    }
  }
}

// 运行测试
testMessageProcessing();