feat: 添加操作日志、危险操作确认和业务关联功能

1. 新增操作日志记录功能，记录关键操作
2. 实现危险操作确认对话框，防止误删
3. 添加业务和库房管理模块
4. 支持设备标记为空闲状态
5. 完善API文档和健康检查
6. 优化前端删除操作的确认流程
7. 添加Swagger API文档支持
8. 实现设备与业务的关联功能
9. 改进设备模型，添加空闲相关字段
10. 优化用户、角色管理操作日志

backend/utils/healthCheck.js

@@ -0,0 +1,158 @@
+const { sequelize, DB_TYPE, dbDialect } = require('../db');
+
+const checkDatabase = async () => {
+  const result = {
+    status: 'ok',
+    type: dbDialect,
+    message: '数据库连接正常'
+  };
+
+  try {
+    await sequelize.authenticate();
+    result.status = 'ok';
+  } catch (error) {
+    result.status = 'error';
+    result.message = `数据库连接失败: ${error.message}`;
+    return result;
+  }
+
+  try {
+    await sequelize.query('SELECT 1');
+    result.status = 'ok';
+  } catch (error) {
+    result.status = 'error';
+    result.message = `数据库查询失败: ${error.message}`;
+  }
+
+  return result;
+};
+
+const checkCriticalConfig = () => {
+  const checks = [];
+
+  const jwtSecret = process.env.JWT_SECRET;
+  if (!jwtSecret) {
+    checks.push({
+      key: 'JWT_SECRET',
+      status: 'error',
+      message: 'JWT_SECRET 未配置'
+    });
+  } else if (jwtSecret.length < 32) {
+    checks.push({
+      key: 'JWT_SECRET',
+      status: 'warning',
+      message: 'JWT_SECRET 长度不足，建议至少 32 字符'
+    });
+  } else {
+    checks.push({
+      key: 'JWT_SECRET',
+      status: 'ok',
+      message: 'JWT_SECRET 已配置'
+    });
+  }
+
+  const port = process.env.PORT;
+  checks.push({
+    key: 'PORT',
+    status: port ? 'ok' : 'warning',
+    message: port ? `服务端口: ${port}` : '使用默认端口 8000'
+  });
+
+  const dbType = process.env.DB_TYPE || 'sqlite';
+  checks.push({
+    key: 'DB_TYPE',
+    status: 'ok',
+    message: `数据库类型: ${dbType}`
+  });
+
+  if (dbType === 'mysql') {
+    const mysqlHost = process.env.MYSQL_HOST;
+    const mysqlDb = process.env.MYSQL_DATABASE;
+    if (!mysqlHost || !mysqlDb) {
+      checks.push({
+        key: 'MYSQL_CONFIG',
+        status: 'warning',
+        message: 'MySQL 配置不完整'
+      });
+    }
+  }
+
+  const overallStatus = checks.every(c => c.status === 'ok')
+    ? 'ok'
+    : checks.some(c => c.status === 'error')
+      ? 'error'
+      : 'warning';
+
+  return {
+    status: overallStatus,
+    checks
+  };
+};
+
+const getSystemInfo = () => {
+  const memUsage = process.memoryUsage();
+  const uptime = process.uptime();
+
+  const formatUptime = (seconds) => {
+    const days = Math.floor(seconds / 86400);
+    const hours = Math.floor((seconds % 86400) / 3600);
+    const minutes = Math.floor((seconds % 3600) / 60);
+    const secs = Math.floor(seconds % 60);
+
+    const parts = [];
+    if (days > 0) parts.push(`${days}天`);
+    if (hours > 0) parts.push(`${hours}小时`);
+    if (minutes > 0) parts.push(`${minutes}分钟`);
+    if (secs > 0 || parts.length === 0) parts.push(`${secs}秒`);
+
+    return parts.join(' ');
+  };
+
+  return {
+    nodeVersion: process.version,
+    platform: process.platform,
+    memory: {
+      heapUsed: Math.round(memUsage.heapUsed / 1024 / 1024 * 100) / 100,
+      heapTotal: Math.round(memUsage.heapTotal / 1024 / 1024 * 100) / 100,
+      rss: Math.round(memUsage.rss / 1024 / 1024 * 100) / 100,
+      unit: 'MB'
+    },
+    uptime: formatUptime(uptime),
+    uptimeSeconds: Math.round(uptime)
+  };
+};
+
+const performHealthCheck = async () => {
+  const [dbCheck] = await Promise.all([checkDatabase()]);
+  const configCheck = checkCriticalConfig();
+  const systemInfo = getSystemInfo();
+
+  const allChecks = [
+    { name: 'database', ...dbCheck },
+    { name: 'config', ...configCheck }
+  ];
+
+  const overallStatus = allChecks.every(c => c.status === 'ok')
+    ? 'ok'
+    : allChecks.some(c => c.status === 'error')
+      ? 'error'
+      : 'warning';
+
+  return {
+    status: overallStatus,
+    timestamp: new Date().toISOString(),
+    service: {
+      name: 'IDC设备管理系统',
+      version: '1.0.0'
+    },
+    checks: allChecks,
+    system: systemInfo
+  };
+};
+
+module.exports = {
+  performHealthCheck,
+  checkDatabase,
+  checkCriticalConfig,
+  getSystemInfo
+};