// pages/search/search.js
// 搜索逻辑处理

const app = getApp()
const api = require('../../services/api')

Page({
  data: {
    keyword: '',
    hotSearchList: [],
    historyList: [],
    searchResult: [],
    page: 1,
    pageSize: 20,
    hasMore: true,
    loading: false,
    showResult: false
  },

  onLoad() {
    this.loadHotSearch()
    this.loadHistorySearch()
  },

  onShow() {
    this.loadHistorySearch()
  },

  // 加载热门搜索
  loadHotSearch() {
    api.getHotSearch().then(res => {
      if (res.code === 200) {
        this.setData({ hotSearchList: res.data || [] })
      }
    })
  },

  // 加载搜索历史
  loadHistorySearch() {
    const history = wx.getStorageSync('searchHistory') || []
    this.setData({ historyList: history })
  },

  // 保存搜索历史
  saveSearchHistory(keyword) {
    if (!keyword) return

    let history = wx.getStorageSync('searchHistory') || []
    history = history.filter(item => item !== keyword)
    history.unshift(keyword)
    history = history.slice(0, 20)
    wx.setStorageSync('searchHistory', history)
    this.setData({ historyList: history })
  },

  // 搜索输入
  onSearchInput(e) {
    this.setData({ keyword: e.detail.value })
  },

  // 执行搜索
  onSearch() {
    const keyword = this.data.keyword.trim()
    if (!keyword) {
      wx.showToast({ title: '请输入搜索关键词', icon: 'none' })
      return
    }

    this.saveSearchHistory(keyword)
    this.setData({ showResult: true, page: 1, searchResult: [], hasMore: true })
    this.loadSearchResult()
  },

  // 加载搜索结果
  loadSearchResult() {
    if (this.data.loading || !this.data.hasMore) return

    this.setData({ loading: true })

    api.search({
      keyword: this.data.keyword,
      page: this.data.page,
      pageSize: this.data.pageSize
    }).then(res => {
      this.setData({ loading: false })
      if (res.code === 200) {
        const list = res.data.list || []
        this.setData({
          searchResult: this.data.page === 1 ? list : this.data.searchResult.concat(list),
          hasMore: list.length >= this.data.pageSize
        })
      }
    }).catch(() => {
      this.setData({ loading: false })
    })
  },

  // 触底加载更多
  onReachBottom() {
    if (this.data.showResult && this.data.hasMore && !this.data.loading) {
      this.setData({ page: this.data.page + 1 })
      this.loadSearchResult()
    }
  },

  // 点击热门搜索词
  onHotSearchTap(e) {
    const keyword = e.currentTarget.dataset.keyword
    this.setData({ keyword })
    this.onSearch()
  },

  // 点击历史搜索词
  onHistorySearchTap(e) {
    const keyword = e.currentTarget.dataset.keyword
    this.setData({ keyword })
    this.onSearch()
  },

  // 清空历史记录
  clearHistory() {
    wx.showModal({
      title: '提示',
      content: '确定清空搜索历史吗？',
      success: res => {
        if (res.confirm) {
          wx.removeStorageSync('searchHistory')
          this.setData({ historyList: [] })
        }
      }
    })
  },

  // 跳转到文章详情
  goToDetail(e) {
    const articleId = e.currentTarget.dataset.id
    wx.navigateTo({
      url: `/pages/article-detail/article-detail?id=${articleId}`
    })
  },

  // 取消搜索
  onCancel() {
    wx.navigateBack()
  }
})

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 */