const api = require('../../api.js')

Page({
  data: {
    loading: true,
    kits: [],
    appNameZh: 'MilesYang时光助手',
    subtitle: '个人工具集合，记录时光点滴。',
    error: '',
    clipVisible: false,
    clipText: '',
    clipCount: 0,
    clipLines: 0,
    clipPreview: '',
  },

  onLoad() {
    this.loadMeta()
  },

  onShow() {
    this.checkClipboard()
  },

  onPullDownRefresh() {
    this.loadMeta().finally(() => {
      wx.stopPullDownRefresh()
    })
  },

  simpleHash(str) {
    const s = String(str || '')
    let h1 = 0x811c9dc5
    let h2 = 0xdeadbeef
    for (let i = 0; i < s.length; i++) {
      const c = s.charCodeAt(i)
      h1 = Math.imul(h1 ^ c, 16777619)
      h2 = Math.imul(h2 ^ c, 2246822519)
    }
    h1 = (h1 ^ h1 >>> 16) >>> 0
    h2 = (h2 ^ h2 >>> 15) >>> 0
    return h1.toString(36) + h2.toString(36)
  },

  checkClipboard() {
    try {
      const enable = wx.getStorageSync('mp_ta_clip_enable')
      if (enable === false || enable === 'false') return
    } catch (e) {}
    wx.getClipboardData({
      success: (res) => {
        const text = (res.data || '').trim()
        if (text.length < 6 || text.length > 30000) return
        const hash = this.simpleHash(text)
        try {
          const last = wx.getStorageSync('mp_ta_clip_hash')
          if (last === hash) return
          wx.setStorageSync('mp_ta_clip_hash', hash)
        } catch (e) {}
        const count = text.length
        const lines = text.split('\n').length
        const preview = text.length > 220 ? text.slice(0, 220) + '\n\n……' : text
        this.setData({
          clipVisible: true,
          clipText: text,
          clipCount: count,
          clipLines: lines,
          clipPreview: preview,
        })
      },
      fail: () => {}
    })
  },

  onClipCollect(e) {
    const mode = (e && e.currentTarget && e.currentTarget.dataset.mode) || 'new'
    const text = this.data.clipText || ''
    if (!text) { this.setData({ clipVisible: false }); return }
    try { wx.setStorageSync('mp_ta_clip_text', text) } catch (e) {}
    try { wx.setStorageSync('mp_ta_clip_mode', mode) } catch (e) {}
    this.setData({ clipVisible: false })
    wx.navigateTo({
      url: '/kits/personal_collect/pages/edit/edit',
      fail: () => { wx.showToast({ title: '打开失败', icon: 'none' }) }
    })
  },

  onClipCancel() {
    this.setData({ clipVisible: false })
  },

  onClipDismissForever() {
    wx.showModal({
      title: '不再检测剪贴板？',
      content: '关闭后可在未来任意新增收藏页面时重新开启。',
      confirmText: '不再提示',
      cancelText: '保留',
      success: (r) => {
        if (r.confirm) {
          try { wx.setStorageSync('mp_ta_clip_enable', false) } catch (e) {}
          this.setData({ clipVisible: false })
          wx.showToast({ title: '已关闭检测', icon: 'none' })
        }
      }
    })
  },

  async loadMeta() {
    this.setData({ loading: true, error: '' })
    try {
      const res = await api.core.getMeta()
      if (res && res.appNameZh) {
        this.setData({ appNameZh: res.appNameZh })
      }
      if (res && Array.isArray(res.kits) && res.kits.length) {
        this.setData({ kits: this.decorateKits(res.kits) })
        try { getApp().setMeta(res) } catch (e) {}
      } else {
        this.setData({ kits: this.fallbackKits() })
      }
    } catch (e) {
      this.setData({
        error: e && e.message ? e.message : '加载失败，请检查网络',
        kits: this.fallbackKits(),
      })
    } finally {
      this.setData({ loading: false })
    }
  },

  fallbackKits() {
    return this.decorateKits([{
      id: 'personal_collect',
      name: '微信收藏夹',
      description: '聊天图片、文件收藏管理，标签搜索，软删除可追溯。',
    }])
  },

  decorateKits(list) {
    const icons = {
      personal_collect: '📁',
    }
    return list.map(item => Object.assign({}, item, {
      icon: icons[item.id] || '🛠️',
      path: this.getKitPath(item.id),
    }))
  },

  getKitPath(id) {
    const map = {
      personal_collect: '/kits/personal_collect/pages/list/list',
    }
    return map[id] || ''
  },

  async onKitTap(e) {
    const id = e.currentTarget.dataset.id
    const path = e.currentTarget.dataset.path
    if (!path) {
      wx.showToast({ title: '功能开发中', icon: 'none' })
      return
    }
    try {
      await api.core.setActiveKit(id)
    } catch (e) {}
    wx.navigateTo({
      url: path,
      fail: () => {
        wx.showToast({ title: '打开失败', icon: 'none' })
      },
    })
  },
})