import SparkMD5 from 'spark-md5'
const fs = require('fs')
const path = require('path')
import { ElectronDownloadManager } from 'electron-dl-manager'
import { dialog } from 'electron'
import axios from 'axios'
const uploadUrl = import.meta.env.VITE_APP_UPLOAD_API + '/smarttalk/file/upload'
const asyncUploadUrl = import.meta.env.VITE_APP_UPLOAD_API + '/smarttalk/file/asyncUpload'
const manager = new ElectronDownloadManager()
export default async function ({ app, shell, BrowserWindow, ipcMain }) {
  const userDataPath = app.getPath('userData')
  const appRootFilePath = userDataPath + '\\selfFile\\'
  const appTempFilePath = userDataPath + '\\tempFile\\'
  let Spark = new SparkMD5.ArrayBuffer()

  ipcMain.on('upload-file-change', (e, { id, fileNewName, cookie, fileType }) => {
    let filePath = appRootFilePath + fileNewName
    //执行更新，上传文件
    let formData = new FormData()
    formData.append('id', id)
    uploadFileByFS({
      url: asyncUploadUrl,
      path: filePath,
      name: fileNewName,
      cookie,
      fileType,
      formData,
      success: (response) => {
        e.reply('upload-file-change-success' + fileNewName, {
          data: response.data,
          md5: formData.md5
        })
      },
      error: (err) => {
        console.error('Error uploading file:', err)
      }
    })
  })

  /*监听文件改变，如果有改变则返回触发*/
  ipcMain.on('listen-file-change', (e, { id, fileNewName, md5, cookie, fileType }) => {
    let filePath = appRootFilePath + fileNewName
    let uploadId = null
    let isOn = false
    let lastMTime = fs.statSync(filePath).mtime.getTime()
    console.log(lastMTime)
    setInterval(() => {
      getFileMsg(filePath).then((msg) => {
        if (msg !== lastMTime) {
          lastMTime = msg
          if (uploadId) {
            clearTimeout(uploadId)
          }
          if (isOn === false) {
            console.log(fileNewName)
            e.reply('listen-file-change-on' + fileNewName)
            isOn = true
          }
          //倒数十秒提交更改，十秒之内有继续修改则重置倒数
          uploadId = setTimeout(() => {
            console.log(223)
            //执行更新，上传文件
            let formData = new FormData()
            formData.append('id', id)
            uploadFileByFS({
              url: asyncUploadUrl,
              path: filePath,
              name: fileNewName,
              cookie,
              fileType,
              formData,
              success: (response) => {
                e.reply('listen-file-change-success' + fileNewName, {
                  data: response.data,
                  md5: formData.md5
                })
                clearTimeout(uploadId)
                isOn = false
              },
              error: (err) => {
                console.error('Error uploading file:', err)
              }
            })
          }, 5000)
        }
      })
    }, 1000)
  })

  function getFileMsg(path) {
    return new Promise((resolve, reject) => {
      const stats = fs.statSync(path)
      return resolve(stats.mtime.getTime())
    })
  }

  function getFileMD5(path) {
    return new Promise((resolve, reject) => {
      fs.readFile(path, (err, dataFile) => {
        if (err) {
          reject(err)
          return console.error(err)
        }
        Spark.append(dataFile)
        let md5 = Spark.end()
        resolve(md5)
      })
    })
  }

  /*
   * 判断是否有本地文件
   * */
  ipcMain.on('is-have-local-file', (e, fileNewName) => {
    let filePath = appRootFilePath + fileNewName
    fs.access(filePath, fs.constants.F_OK, (err) => {
      if (err) {
        e.reply('is-have-local-file-reply' + fileNewName, false)
        return
      }
      e.reply('is-have-local-file-reply' + fileNewName, true)
    })
  })

  /*
   * 判断是需要同步本地文件
   * */
  ipcMain.on('is-async-local-file', (e, { fileNewName, lastModifyTime, md5 }) => {
    let filePath = appRootFilePath + fileNewName
    fs.access(filePath, fs.constants.F_OK, (err) => {
      if (err) {
        e.reply('is-async-local-file-reply' + fileNewName, { isAsync: true, type: 'down' })
        return
      }
      getFileMsg(filePath).then((msg) => {
        let time = new Date(lastModifyTime).getTime();
        msg = parseInt(msg/1000)*1000;
        if (msg == time) {
          e.reply('is-async-local-file-reply' + fileNewName, { isAsync: false, type: '' })
        } else {
          const stats = fs.statSync(filePath)
          //如果线上时间大于线下时间，就需要从线上下载，否则则需要上传
          if (time > stats.mtime.getTime()) {
            e.reply('is-async-local-file-reply' + fileNewName, { isAsync: true, type: 'down' })
          } else if (time < stats.mtime.getTime()) {
            e.reply('is-async-local-file-reply' + fileNewName, { isAsync: true, type: 'upload' })
          }
        }
      })
    })
  })

  //默认浏览器打开url
  ipcMain.on('open-url-browser', (e, url) => {
    shell.openPath(url)
  })

  //使用默认应用打开本地文件
  ipcMain.on('open-path-app', (e, destination) => {
    let path = appRootFilePath + destination
    shell.openPath(path).catch((error) => {
      console.log(error)
    })
  })

  //复制文件
  ipcMain.on('copy-file-default', (e, { source, destination }) => {
    copyFile(source, destination, (error, filePath) => {
      e.reply('copy-file-default-reply', { error, filePath })
    })
  })

  //导出文件
  ipcMain.on('export-file-default', (e, list) => {
    exportFile(list, (res) => {
      e.reply('export-file-default-reply', res)
    })
  })

  function uploadFileByFS({ url, path, name, cookie, fileType, formData, success, error }) {
    fs.readFile(path, (err, data) => {
      if (err) {
        return console.error(err)
      }
      // 配置上传的请求
      const config = {
        headers: {
          'Content-Type': 'multipart/form-data', // 或者其他适合上传文件的Content-Type
          Authorization: 'Bearer ' + cookie
        }
      }
      Spark.append(data)
      let md5 = Spark.end()
      // 使用axios上传文件
      let file = new File([data], name, {
        type: fileType
      })
      const stats = fs.statSync(path)
      formData.append('file', file)
      formData.append('md5', md5)
      formData.append('lastModifyTime', stats.mtime.toLocaleString())
      axios
        .post(url, formData, config)
        .then((response) => {
          success(response)
        })
        .catch((errorMsg) => {
          error(errorMsg)
        })
    })
  }

  /*创建新的ppt文件*/
  ipcMain.on('creat-file-default', (e, { name, uploadData, cookie }) => {
    createFolder('tempFile').then(() => {
      let path = appTempFilePath + name.replace(/[\\/:*?"<>|]/, '')
      console.log(path)
      fs.writeFileSync(path, '', 'utf-8')
      let fileType = 'application/vnd.openxmlformats-officedocument.presentationml.presentation'
      let formData = new FormData()
      for (let key in uploadData) {
        if (Object.prototype.hasOwnProperty.call(uploadData, key)) {
          // 检查是否是对象自身的属性
          formData.append(key, uploadData[key])
        }
      }
      formData.append('fileFlag', '课件')
      uploadFileByFS({
        url: uploadUrl,
        path,
        name,
        cookie,
        fileType,
        formData,
        success: (response) => {
          e.reply('creat-file-default-reply', response.data)
          console.log('File uploaded successfully:', response.data)
        },
        error: (err) => {
          console.error('Error uploading file:', err)
        }
      })
    })
  })

  /*创建新的ppt文件*/
  ipcMain.on('creat-ai-file-default', (e, { name, url, uploadData, cookie }) => {
    createFolder('tempFile').then(async () => {
      let lastname = decodeURIComponent(url);
      name =  lastname.substring(lastname.lastIndexOf("/")+1)
      let path = appTempFilePath + name.replace(/[\\/:*?"<>|]/, '')
      let {type,item} = await downloadFiles(url,name)
      if (type==="成功") {
        let fileType = 'application/vnd.openxmlformats-officedocument.presentationml.presentation'
        let formData = new FormData()
        for (let key in uploadData) {
          if (Object.prototype.hasOwnProperty.call(uploadData, key)) {
            // 检查是否是对象自身的属性
            formData.append(key, uploadData[key])
          }
        }
        formData.append('fileFlag', '课件')
        uploadFileByFS({
          url: uploadUrl,
          path,
          name,
          cookie,
          fileType,
          formData,
          success: (response) => {
            e.reply('creat-ai-file-default-reply', response.data)
            console.log('File uploaded successfully:', response.data)
          },
          error: (err) => {
            console.error('Error uploading file:', err)
          }
        })
      }else {
        e.reply('creat-ai-file-default-reply', type)
      }
    })
  })

  function downloadFiles(url,fileName) {
    console.log(url,fileName)
    return new Promise((resolve, reject)=>{
      const browserWindow = BrowserWindow.getFocusedWindow()
      const id = manager.download({
        window: browserWindow,
        url: url,
        saveAsFilename: fileName,
        directory: appTempFilePath,
        callbacks: {
          onDownloadStarted: async ({ id, item, webContents }) => {
            // Do something with the download id
          },
          onDownloadProgress: async ({ id, item, percentCompleted }) => {
            // console.log(percentCompleted)
          },
          onDownloadCompleted: async ({ id, item }) => {
            console.log('完成')
            resolve({type:"成功",item})
          },
          onDownloadCancelled: async () => {
            console.log("取消")
            reject({type:"取消了下载"})
          },
          onDownloadInterrupted: async () => {
            console.log('中断')
            reject({type:"下载被中断"})
          },
          onError: (err, data) => {
            console.log(err.toString())
            reject({type:"下载出错",err})
          }
        }
      })
    })
  }

  //获取应用文件目录
  ipcMain.on('get-root-file-path', (e) => {
    e.reply('get-root-file-path-reply', appRootFilePath)
  })

  //下载文件
  ipcMain.on('download-file-default', (e, { url, fileName }) => {
    createFolder('selfFile')
      .then(async () => {
        const browserWindow = BrowserWindow.getFocusedWindow()
        const id = await manager.download({
          window: browserWindow,
          url: url,
          saveAsFilename: fileName,
          directory: appRootFilePath,
          callbacks: {
            onDownloadStarted: async ({ id, item, webContents }) => {
              // Do something with the download id
            },
            onDownloadProgress: async ({ id, item, percentCompleted }) => {
              e.reply('download-file-default-prog' + fileName, percentCompleted)
            },
            onDownloadCompleted: async ({ id, item }) => {
              console.log('完成')
              e.reply('download-file-default' + fileName, true)
            },
            onDownloadCancelled: async () => {
              console.log('取消')
              e.reply('download-file-default' + fileName, false)
            },
            onDownloadInterrupted: async () => {
              console.log('中断')
              e.reply('download-file-default' + fileName, false)
            },
            onError: (err, data) => {
              console.log(err.toString())
              e.reply('download-file-default' + fileName, false)
            }
          }
        })
      })
      .catch((error) => {
        e.reply('download-file-default' + fileName, false)
      })
  })

  /**另存为...
   * 接收渲染进程 保存文件的 的通知
   * @param {Object} event
   * @param {String} url 下载链接
   * @param {String} fileName 文件名称包括后缀名，例如图1.png
   */
  ipcMain.on('save-as', function (event, url, fileName) {
    let win = BrowserWindow.getFocusedWindow()
    //通过扩展名识别文件类型
    let filters = [{ name: '全部文件', extensions: ['*'] }]
    let ext = path.extname(fileName) //获取扩展名
    if (ext && ext !== '.') {
      const name = ext.slice(1, ext.length)
      if (name) {
        filters.unshift({
          name: '',
          extensions: [name]
        })
      }
    }
    let filePath = null //用户选择存放文件的路径

    //1-  弹出另存为弹框，用于获取保存路径
    dialog
      .showSaveDialog(win, {
        title: '另存为',
        filters,
        defaultPath: fileName
      })
      .then((result) => {
        //点击保存后开始下载
        filePath = result.filePath
        if (filePath) {
          win.webContents.downloadURL(url) // 触发will-download事件
        }
      })
      .catch(() => {
        console.log('另存为--catch')
      })

    //2- 准备下载的时候触发
    win.webContents.session.once('will-download', (event, item, webContents) => {
      if (!filePath) return
      //设置下载项的保存文件路径
      item.setSavePath(filePath)
    })
  })

  /*导出文件*/
  function exportFile(list, callback) {
    let win = BrowserWindow.getFocusedWindow()
    //通过扩展名识别文件类型
    let filePath = null //用户选择存放文件的路径
    //1-  弹出另存为弹框，用于获取保存路径
    dialog
      .showOpenDialog(win, {
        properties: ['openDirectory']
      })
      .then(async (result) => {
        if (result.filePaths[0]) {
          filePath = result.filePaths[0]
          let res = []
          for (let i = 0; i < list.length; i++) {
            let item = list[i]
            let source = appRootFilePath + item.id
            let destination = filePath + '/' + item.name
            await copyRelFile(source, filterCopyFile(destination), (error, path) => {
              res.push({ error, path })
            })
          }
          callback(res)
        }
      })
      .catch(() => {
        console.log('另存为--catch')
      })
  }

  /*文件是否已经存在*/
  function isHaveFile(path) {
    return fs.existsSync(path)
  }

  /*判断是否已经存在这个名字的文件，如果已经存在则递增导出*/
  function filterCopyFile(path, index = 0) {
    if (isHaveFile(path) === true) {
      index++
      path = path.replaceAll('.', `(${index}).`)
      return filterCopyFile(path, index)
    } else {
      return path
    }
  }

  /*复制文件*/
  function copyRelFile(source, destination, callback) {
    return new Promise((resolve, reject) => {
      const readStream = fs.createReadStream(source)
      const writeStream = fs.createWriteStream(destination)

      readStream.on('error', (error) => {
        reject()
        callback(error, null)
      })
      writeStream.on('error', (error) => {
        reject()
        callback(error, null)
      })
      writeStream.on('close', () => {
        console.log('关闭写入流')
        callback(null, destination)
        resolve()
      })
      readStream.pipe(writeStream)
    })
  }

  /*复制文件*/
  function copyFile(source, destination, callback) {
    let path = appRootFilePath + destination
    createFolder('selfFile').then(() => {
      const readStream = fs.createReadStream(source)
      const writeStream = fs.createWriteStream(path)

      readStream.on('error', (error) => {
        callback(error, null)
      })
      writeStream.on('error', (error) => {
        callback(error, null)
      })
      writeStream.on('close', () => {
        callback(null, path)
      })

      readStream.pipe(writeStream)
    })
  }

  /*创建文件夹*/
  function createFolder(folderName) {
    return new Promise((resolve, reject) => {
      const folderPath = path.join(userDataPath, folderName)
      // 异步检查文件夹是否存在，不存在则创建
      fs.access(folderPath, fs.constants.F_OK, (err) => {
        if (err) {
          fs.mkdir(folderPath, { recursive: true }, (mkdirErr) => {
            if (mkdirErr) {
              console.error(mkdirErr)
              reject()
            } else {
              console.log(`Folder ${folderName} created successfully.`)
              resolve()
            }
          })
        } else {
          console.log(`Folder ${folderName} already exists.`)
          resolve()
        }
      })
    })
  }
}