// 简化的测试脚本
console.log('开始测试预警检测逻辑...');

// 模拟前端判断函数
function determineAlertType(record) {
  const alerts = []
  
  // 检查电量预警
  if (record.battery !== undefined && record.battery !== null && record.battery < 20) {
    alerts.push('battery')
  }
  
  // 检查脱落预警 (bandge_status为0)
  if (record.bandge_status !== undefined && record.bandge_status !== null && record.bandge_status === 0) {
    alerts.push('wear')
  }
  
  // 检查离线预警 (is_connect为0)
  if (record.is_connect !== undefined && record.is_connect !== null && record.is_connect === 0) {
    alerts.push('offline')
  }
  
  // 检查温度预警
  if (record.temperature !== undefined && record.temperature !== null) {
    if (record.temperature < 20) {
      alerts.push('temperature_low')
    } else if (record.temperature > 40) {
      alerts.push('temperature_high')
    }
  }
  
  // 检查运动异常预警 (steps - y_steps为0)
  if (record.steps !== undefined && record.y_steps !== undefined && 
      record.steps !== null && record.y_steps !== null) {
    const movementDiff = record.steps - record.y_steps
    if (movementDiff === 0) {
      alerts.push('movement')
    }
  }
  
  // 返回第一个预警类型，如果没有预警则返回null
  return alerts.length > 0 ? alerts[0] : null
}

// 测试用例
const testCases = [
  {
    name: '正常设备',
    data: { battery: 85, temperature: 25, is_connect: 1, bandge_status: 1, steps: 1000, y_steps: 500 },
    expected: null
  },
  {
    name: '低电量预警',
    data: { battery: 15, temperature: 25, is_connect: 1, bandge_status: 1, steps: 1000, y_steps: 500 },
    expected: 'battery'
  },
  {
    name: '离线预警',
    data: { battery: 85, temperature: 25, is_connect: 0, bandge_status: 1, steps: 1000, y_steps: 500 },
    expected: 'offline'
  }
];

// 运行测试
testCases.forEach((testCase, index) => {
  const result = determineAlertType(testCase.data);
  const success = result === testCase.expected;
  console.log(`测试 ${index + 1}: ${testCase.name} - ${success ? '✅ 通过' : '❌ 失败'}`);
  console.log(`  预期: ${testCase.expected}, 实际: ${result}`);
});

console.log('测试完成！');