import { injectPage } from '@jdmini/api'
const { DATA_BASE_URL } = require('../../utils/config.js')

Page(injectPage({})({
  data: {
    dataBaseUrl: DATA_BASE_URL,
    downloads: []
  },

  onShow() {
    this.loadDownloads()
  },

  // 加载下载记录
  loadDownloads() {
    try {
      const downloads = wx.getStorageSync('downloads') || []

      // 格式化时间
      const formattedDownloads = downloads.map(item => ({
        ...item,
        downloadTimeStr: this.formatTime(item.downloadTime)
      }))

      this.setData({ downloads: formattedDownloads })
    } catch (error) {
      console.error('加载下载记录失败:', error)
    }
  },

  // 格式化时间
  formatTime(timestamp) {
    const date = new Date(timestamp)
    const year = date.getFullYear()
    const month = String(date.getMonth() + 1).padStart(2, '0')
    const day = String(date.getDate()).padStart(2, '0')
    const hours = String(date.getHours()).padStart(2, '0')
    const minutes = String(date.getMinutes()).padStart(2, '0')
    return `${year}-${month}-${day} ${hours}:${minutes}`
  },

  // 打开文件
  openFile(e) {
    const index = e.currentTarget.dataset.index
    const item = this.data.downloads[index]

    if (item.filePath) {
      // 尝试打开已保存的文件
      wx.openDocument({
        filePath: item.filePath,
        fileType: 'pdf',
        showMenu: true,
        fail: (err) => {
          console.error('打开文件失败:', err)
          // 文件可能被删除，重新下载
          this.redownload(item)
        }
      })
    } else {
      // 没有本地文件，重新下载
      this.redownload(item)
    }
  },

  // 重新下载
  redownload(item) {
    const pdfUrl = DATA_BASE_URL + item.pdfurl

    wx.showLoading({
      title: '加载中...',
      mask: true
    })

    wx.downloadFile({
      url: pdfUrl,
      success: (res) => {
        wx.hideLoading()
        if (res.statusCode === 200) {
          wx.openDocument({
            filePath: res.tempFilePath,
            fileType: 'pdf',
            showMenu: true
          })
        }
      },
      fail: () => {
        wx.hideLoading()
        wx.showToast({
          title: '加载失败',
          icon: 'none'
        })
      }
    })
  },

  // 删除下载记录
  deleteItem(e) {
    const index = e.currentTarget.dataset.index
    const item = this.data.downloads[index]

    wx.showModal({
      title: '提示',
      content: '确定删除此下载记录吗？',
      success: (res) => {
        if (res.confirm) {
          // 删除本地文件
          if (item.filePath) {
            try {
              const fs = wx.getFileSystemManager()
              fs.unlinkSync(item.filePath)
            } catch (error) {
              console.log('删除文件失败或文件不存在')
            }
          }

          // 更新记录
          const downloads = this.data.downloads.filter((_, i) => i !== index)
          this.setData({ downloads })

          // 更新存储
          const storageData = downloads.map(d => {
            const { downloadTimeStr, ...rest } = d
            return rest
          })
          wx.setStorageSync('downloads', storageData)

          wx.showToast({
            title: '已删除',
            icon: 'success'
          })
        }
      }
    })
  },

  // 跳转详情
  goDetail(e) {
    const id = e.currentTarget.dataset.id
    wx.navigateTo({
      url: `/pages/detail/detail?id=${id}`
    })
  },

  // 去浏览
  goHome() {
    wx.switchTab({
      url: '/pages/index/index'
    })
  }
}))