// pages/device/list/list.js
const app = getApp();

Page({
  data: {
    searchValue: '',
    activeFilter: 'all',
    deviceList: [],
    allDeviceList: [], // 保存所有设备数据
    statistics: {
      total: 0,
      normal: 0,
      warning: 0,
      expired: 0
    },
    loading: false,
    showFilter: false,
    deviceTypes: ['全部', '安全帽', '安全带', '绝缘手套', '绝缘鞋', '验电器', '接地线', '安全围栏'],
    useUnits: ['全部', '施工一队', '施工二队', '施工三队', '维护班组', '检修班组'],
    selectedType: '全部',
    selectedUnit: '全部'
  },

  onLoad() {
    this.loadDeviceList();
  },

  onShow() {
    // 每次显示时刷新列表
    this.loadDeviceList();
  },

  // 加载设备列表
  loadDeviceList() {
    this.setData({ loading: true });
    
    // TODO: 从后端或本地存储加载数据
    // 这里使用模拟数据
    setTimeout(() => {
      const mockData = this.getMockDeviceList();
      this.setData({
        allDeviceList: mockData,
        deviceList: mockData,
        loading: false
      });
      this.calculateStatistics();
    }, 500);
  },

  // 模拟设备数据
  getMockDeviceList() {
    const today = new Date();
    const devices = [
      {
        id: '1',
        deviceName: '绝缘手套',
        deviceCode: 'SB-2023-001',
        deviceType: '绝缘手套',
        specification: 'YS101-10kV',
        useUnit: '施工一队',
        belongUnit: '电力公司',
        lastInspectionDate: '2023-06-01',
        nextInspectionDate: '2024-06-01',
        status: 'warning'
      },
      {
        id: '2',
        deviceName: '安全帽',
        deviceCode: 'SB-2023-015',
        deviceType: '安全帽',
        specification: 'ABS-001',
        useUnit: '施工二队',
        belongUnit: '电力公司',
        lastInspectionDate: '2023-08-15',
        nextInspectionDate: '2024-08-15',
        status: 'normal'
      },
      {
        id: '3',
        deviceName: '安全带',
        deviceCode: 'SB-2023-028',
        deviceType: '安全带',
        specification: 'AD-500',
        useUnit: '施工三队',
        belongUnit: '电力公司',
        lastInspectionDate: '2023-05-20',
        nextInspectionDate: '2024-05-20',
        status: 'expired'
      },
      {
        id: '4',
        deviceName: '验电器',
        deviceCode: 'SB-2023-042',
        deviceType: '验电器',
        specification: 'YDQ-10kV',
        useUnit: '维护班组',
        belongUnit: '电力公司',
        lastInspectionDate: '2023-09-10',
        nextInspectionDate: '2024-09-10',
        status: 'normal'
      },
      {
        id: '5',
        deviceName: '绝缘鞋',
        deviceCode: 'SB-2023-056',
        deviceType: '绝缘鞋',
        specification: 'JYX-10kV',
        useUnit: '检修班组',
        belongUnit: '电力公司',
        lastInspectionDate: '2023-07-01',
        nextInspectionDate: '2024-07-01',
        status: 'warning'
      }
    ];

    // 计算每个设备的状态和剩余天数
    return devices.map(device => {
      const nextDate = new Date(device.nextInspectionDate);
      const diffTime = nextDate - today;
      const daysLeft = Math.ceil(diffTime / (1000 * 60 * 60 * 24));
      
      let status = 'normal';
      let statusText = '正常';
      let statusTheme = 'success';
      let isWarning = false;
      
      if (daysLeft < 0) {
        status = 'expired';
        statusText = '已到期';
        statusTheme = 'danger';
        isWarning = true;
      } else if (daysLeft <= 30) {
        status = 'warning';
        statusText = '预警';
        statusTheme = 'warning';
        isWarning = true;
      }
      
      return {
        ...device,
        status,
        statusText,
        statusTheme,
        daysLeft,
        isWarning
      };
    });
  },

  // 计算统计数据
  calculateStatistics() {
    const { deviceList } = this.data;
    const statistics = {
      total: deviceList.length,
      normal: deviceList.filter(d => d.status === 'normal').length,
      warning: deviceList.filter(d => d.status === 'warning').length,
      expired: deviceList.filter(d => d.status === 'expired').length
    };
    this.setData({ statistics });
  },

  // 搜索
  onSearchChange(e) {
    this.setData({ searchValue: e.detail.value });
  },

  onSearch() {
    this.filterDeviceList();
  },

  onSearchClear() {
    this.setData({ searchValue: '' });
    this.filterDeviceList();
  },

  // 筛选
  onFilterChange(e) {
    const filter = e.currentTarget.dataset.filter;
    this.setData({ activeFilter: filter });
    this.filterDeviceList();
  },

  filterDeviceList() {
    const { allDeviceList, searchValue, activeFilter, selectedType, selectedUnit } = this.data;
    
    let filtered = allDeviceList;
    
    // 搜索过滤
    if (searchValue) {
      filtered = filtered.filter(device => 
        device.deviceName.includes(searchValue) ||
        device.deviceCode.includes(searchValue) ||
        device.specification.includes(searchValue)
      );
    }
    
    // 状态过滤
    if (activeFilter !== 'all') {
      filtered = filtered.filter(device => device.status === activeFilter);
    }
    
    // 类型过滤
    if (selectedType !== '全部') {
      filtered = filtered.filter(device => device.deviceType === selectedType);
    }
    
    // 单位过滤
    if (selectedUnit !== '全部') {
      filtered = filtered.filter(device => device.useUnit === selectedUnit);
    }
    
    this.setData({ deviceList: filtered });
    this.calculateStatistics();
  },

  // 显示筛选弹窗
  showFilterDialog() {
    this.setData({ showFilter: true });
  },

  // 选择类型
  selectType(e) {
    this.setData({ selectedType: e.currentTarget.dataset.type });
  },

  // 选择单位
  selectUnit(e) {
    this.setData({ selectedUnit: e.currentTarget.dataset.unit });
  },

  // 确认筛选
  onFilterConfirm() {
    this.setData({ showFilter: false });
    this.filterDeviceList();
  },

  // 重置筛选
  onFilterReset() {
    this.setData({
      selectedType: '全部',
      selectedUnit: '全部',
      showFilter: false
    });
    this.filterDeviceList();
  },

  // 关闭筛选弹窗
  onFilterClose() {
    this.setData({ showFilter: false });
  },

  // 跳转到详情
  goToDetail(e) {
    const id = e.currentTarget.dataset.id;
    wx.navigateTo({
      url: `/pages/device/detail/detail?id=${id}`
    });
  },

  // 跳转到添加页面
  goToAdd() {
    wx.navigateTo({
      url: '/pages/device/add/add'
    });
  },

  // 下拉刷新
  onPullDownRefresh() {
    this.loadDeviceList();
    setTimeout(() => {
      wx.stopPullDownRefresh();
    }, 1000);
  }
});