// pages/search/index.js
Page({
  data: {
    keyword: '',
    searchHistory: [],
    hotSearches: [
      'iPhone 14 Pro Max',
      '华为 Mate60 Pro',
      '小米14 Pro',
      'MacBook Pro',
      'iPad Pro',
      'Apple Watch',
      'AirPods Pro',
      'Switch OLED'
    ],
    suggestions: []
  },

  onLoad() {
    // 获取搜索历史
    const history = wx.getStorageSync('searchHistory') || []
    this.setData({ searchHistory: history })
  },

  // 输入关键词
  onInput(e) {
    const keyword = e.detail.value.trim()
    this.setData({ keyword })
    
    if (keyword) {
      this.getSuggestions(keyword)
    } else {
      this.setData({ suggestions: [] })
    }
  },

  // 获取搜索建议
  getSuggestions(keyword) {
    // 模拟搜索建议
    const suggestions = this.data.hotSearches.filter(item => 
      item.toLowerCase().includes(keyword.toLowerCase())
    )
    this.setData({ suggestions })
  },

  // 执行搜索
  onSearch(e) {
    const keyword = (e.detail?.value || this.data.keyword).trim()
    if (!keyword) return
    
    this.saveSearchHistory(keyword)
    this.navigateToResult(keyword)
  },

  // 点击标签搜索
  onTagClick(e) {
    const { keyword } = e.currentTarget.dataset
    this.setData({ keyword })
    this.saveSearchHistory(keyword)
    this.navigateToResult(keyword)
  },

  // 保存搜索历史
  saveSearchHistory(keyword) {
    let history = this.data.searchHistory
    // 移除已存在的相同关键词
    history = history.filter(item => item !== keyword)
    // 将新关键词添加到开头
    history.unshift(keyword)
    // 只保留最近10条
    history = history.slice(0, 10)
    
    this.setData({ searchHistory: history })
    wx.setStorageSync('searchHistory', history)
  },

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

  // 清除关键词
  clearKeyword() {
    this.setData({
      keyword: '',
      suggestions: []
    })
  },

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

  // 跳转到搜索结果页
  navigateToResult(keyword) {
    wx.navigateTo({
      url: `/pages/search/result?keyword=${encodeURIComponent(keyword)}`
    })
  }
})