import { saveAs } from 'file-saver'
import type { ZipProvider } from '../zip.js'
import { DefaultZipProvider, FileInfo } from '../zip.js'
import { StringBuider } from './StringBuidler.js'

// import { textFile } from './File';
import { StringBase64 } from './StringBase64.js'

export class FileZip
{
  zipName: string
  // zip对象
  private zip: ZipProvider = DefaultZipProvider()
  // 文件数据
  private stringBuider: StringBuider

  constructor()
  {
    this.stringBuider = new StringBuider()
    this.SetZipFileName('')
  }

  /** 设置zip文件名 */
  SetZipFileName(_name: string)
  {
    this.zipName = _name
  }

  getZipFileName()
  {
    return this.zipName
  }

  PushBlobFile(fileName: string, content)
  {
    let newFile = new FileInfo(fileName, content, false)
    newFile.binary = true
    this.zip.addFile(newFile)
  }

  // /**添加文件 */
  // PushFile(fileName: string, fileText: string, isBase64 = false, isgb2312 = false, isUtf8Bom=false)
  // {
  //     if (isgb2312)
  //     {
  //         isBase64 = true;
  //         fileText = StringBase64.ToBase64_gb2312(fileText);
  //     }
  //     if(isUtf8Bom)
  //     {
  //         fileText = String.fromCharCode(parseInt("0xFEFF"))  + fileText;
  //     }
  //     let newFile = new FileInfo(fileName, fileText, isBase64);
  //     this.zip.addFile(newFile);
  // }

  /** 添加文件 fileName文件名 fileText文件内容 isBase64是否base64 encoding编码格式(gb2312, utf8bom) */
  PushFile(fileName: string, fileText: string, isBase64 = false, encoding: string = 'gb2312')
  {
    if (encoding == 'gb2312')
    {
      isBase64 = true
      fileText = StringBase64.ToBase64_gb2312(fileText)
    }
    if (encoding == 'utf8bom')
    {
      fileText = String.fromCharCode(Number.parseInt('0xFEFF')) + fileText
    }
    let newFile = new FileInfo(fileName, fileText, isBase64)
    this.zip.addFile(newFile)
  }

  pushFile_withBom(fileName: string, fileText: string)
  {
    this.PushFile(fileName, fileText, false, 'utf8bom')
  }

  PushFile_GB2312(fileName: string, fileText: string)
  {
    this.PushFile(fileName, fileText, false, 'gb2312')
  }

  /** 新建文件 */
  NewFile()
  {
    this.stringBuider.Clear()
  }

  /** 推送文本到缓存区 */
  AppentText(comment: string)
  {
    this.stringBuider.Append(comment)
  }

  // //将缓存区的文本 保存起来
  // SaveFile(fileName: string, isgb2312: boolean = false, isutf8bom = false)
  // {
  //     let fileText = this.stringBuider.ToString();
  //     this.stringBuider.Clear();
  //     this.PushFile(fileName, fileText, false, isgb2312, isutf8bom);
  // }

  // 将缓存区的文本 保存起来
  SaveFile(fileName: string, encoding: string = 'gb2312')
  {
    let fileText = this.stringBuider.ToString()
    this.stringBuider.Clear()
    this.PushFile(fileName, fileText, false, encoding)
  }

  // 下载zip文件
  async Download(zipName = '')
  {
    let content = await this.zip.saveAsync()
    // textFile.saveAs(FileZip.zipName,content);
    let name = zipName || this.zipName
    saveAs(content, name)
  }

  static WriteFile(fname: string, data: BlobPart)
  {
    let blob = new Blob([data], { type: 'octet/stream' })

    let download = document.createElement('a')
    download.download = fname
    download.href = window.URL.createObjectURL(blob)
    download.style.display = 'none'
    download.onclick = function ()
    {
      document.body.removeChild(download)
    }
    document.body.appendChild(download)

    download.click()
  };
}

export { FileInfo }