wxamp-ymtxUser/pagesB/pages/policyElucidation/policyElucidation.js

import http from '../../../utils/api'

Page({
  data: {
    currentDate: '2023年11月15日',
    searchKeyword: '',
    activeFilter: '全部',
    activeFilterValue: '',
    showPolicyDetail: false,
    currentPolicy: {},
    filteredPolicies: [],
    dictType: [],
    
    // 分页相关
    pageNum: 1,
    pageSize: 10,
    total: 0,
    hasMore: true,
    isLoading: false,
    isLoadingMore: false,
    
    // 滚动区域高度
    scrollHeight: 0,
    
    // 搜索定时器
    searchTimer: null
  },

  onLoad: function(options) {
    this.getpolicyeZd()
    this.getpolicyelucidation()
    
    // 计算滚动区域高度
    this.calculateScrollHeight()
  },

  onReady: function() {
    // 确保获取正确的高度
    this.calculateScrollHeight()
  },

  // 计算滚动区域高度
  calculateScrollHeight: function() {
    const systemInfo = wx.getSystemInfoSync()
    const query = wx.createSelectorQuery()
    query.select('.search-section').boundingClientRect()
    query.select('.bottom-tip').boundingClientRect()
    query.exec((res) => {
      if (res[0] && res[1]) {
        const searchHeight = res[0].height
        const bottomHeight = res[1].height
        const windowHeight = systemInfo.windowHeight
        const scrollHeight = windowHeight - searchHeight - bottomHeight - 40
        this.setData({
          scrollHeight: Math.max(scrollHeight, 400) // 设置最小高度
        })
      }
    })
  },

  // 政策解读列表（支持分页和筛选）
  getpolicyelucidation: function(isLoadMore = false) {
    if (isLoadMore && (!this.data.hasMore || this.data.isLoadingMore)) {
      return
    }
    
    if (!isLoadMore) {
      this.setData({ isLoading: true })
    } else {
      this.setData({ isLoadingMore: true })
    }
    
    const params = {
      pageNum: isLoadMore ? this.data.pageNum : 1,
      pageSize: this.data.pageSize,
      searchKey: this.data.searchKeyword || undefined
    }
    
    // 如果选择了分类（不是"全部"），则添加分类参数
    if (this.data.activeFilterValue && this.data.activeFilter !== '全部') {
      params.policyCategory = this.data.activeFilterValue
    }
    
    http.policyelucidation({
      data: params,
      success: res => {
        console.log('政策列表:', res)
        
        const newList = isLoadMore 
          ? [...this.data.filteredPolicies, ...res.rows]
          : res.rows
        
        const total = res.total || 0
        const currentTotal = newList.length
        const hasMore = currentTotal < total
        
        this.setData({
          filteredPolicies: newList,
          total: total,
          hasMore: hasMore,
          pageNum: isLoadMore ? this.data.pageNum + 1 : 2,
          isLoading: false,
          isLoadingMore: false
        })
      },
      fail: (err) => {
        console.error('获取政策列表失败:', err)
        this.setData({
          isLoading: false,
          isLoadingMore: false
        })
        
        if (!isLoadMore) {
          wx.showToast({
            title: '加载失败',
            icon: 'none'
          })
        }
      }
    })
  },

  // 类型
  getpolicyeZd: function() {
    http.policyeZd({
      data: {
        dictType: 'policy_category'
      },
      success: res => {
        console.log('分类数据:', res)
        this.setData({
          dictType: res.rows
        })
      },
      fail: (err) => {
        console.error('获取分类失败:', err)
        wx.showToast({
          title: '加载分类失败',
          icon: 'none'
        })
      }
    })
  },

  // 搜索输入处理（防抖）
  onSearchInput: function(e) {
    const searchKeyword = e.detail.value.trim()
    
    this.setData({
      searchKeyword: searchKeyword
    })
    
    // 清除之前的定时器
    if (this.data.searchTimer) {
      clearTimeout(this.data.searchTimer)
    }
    
    // 设置新的定时器（500ms防抖）
    this.data.searchTimer = setTimeout(() => {
      // 重置分页
      this.setData({
        pageNum: 1,
        hasMore: true
      }, () => {
        this.getpolicyelucidation()
      })
    }, 500)
  },

  // 清空搜索
  onClearSearch: function() {
    this.setData({
      searchKeyword: '',
      pageNum: 1,
      hasMore: true
    }, () => {
      this.getpolicyelucidation()
    })
  },

  // 搜索按钮点击（键盘搜索键）
  onSearch: function() {
    this.setData({
      pageNum: 1,
      hasMore: true
    }, () => {
      this.getpolicyelucidation()
    })
  },

  // 筛选标签点击
  onFilterTap: function(e) {
    const filter = e.currentTarget.dataset.filter
    const value = e.currentTarget.dataset.value
    
    this.setData({
      activeFilter: filter,
      activeFilterValue: value,
      pageNum: 1,
      hasMore: true
    }, () => {
      this.getpolicyelucidation()
    })
  },

  // 政策卡片点击
  onPolicyTap: function(e) {
    const policyId = e.currentTarget.dataset.id
    http.policyeDetails({
      data: {
        id: policyId
      },
      success: res => {
        console.log('政策详情:', res)
        this.setData({
          showPolicyDetail: true,
          currentPolicy: res.data
        })
      },
      fail: (err) => {
        console.error('获取政策详情失败:', err)
        wx.showToast({
          title: '加载详情失败',
          icon: 'none'
        })
      }
    })
  },

  // 上拉加载更多
  onReachBottom: function() {
    if (this.data.hasMore && !this.data.isLoadingMore) {
      this.getpolicyelucidation(true)
    }
  },

  // 隐藏政策详情
  hidePolicyDetail: function() {
    this.setData({
      showPolicyDetail: false
    })
  },

  // 阻止事件冒泡
  stopPropagation: function() {
    // 空函数，仅用于阻止事件冒泡
  }
})