import  { picker } from '@kit.CoreFileKit';
import { common } from '@kit.AbilityKit';
import { request,BusinessError } from '@kit.BasicServicesKit';
import fs from '@ohos.file.fs';

export async function selectDocFile(){
  const documentSelectOptions = new picker.DocumentSelectOptions();
  // 选择文档的最大数目（可选）
  documentSelectOptions.maxSelectNumber = 1;
  // 选择文件的后缀类型['后缀类型描述|后缀类型']（可选） 若选择项存在多个后缀名，则每一个后缀名之间用英文逗号进行分隔（可选），后缀类型名不能超过100,选择所有文件：'所有文件(*.*)|.*';
  documentSelectOptions.fileSuffixFilters = ['.png,.jpg,.jpeg', '.pdf'];
  let context = getContext() as common.Context; // 请确保 getContext(this) 返回结果为 UIAbilityContext
  // 创建文件选择器实例
  const documentViewPicker = new picker.DocumentViewPicker(context);
  try {
    let documentSelectResult = await documentViewPicker.select(documentSelectOptions)
    console.log('结果为:' + documentSelectResult)
    return documentSelectResult
  }catch (error){
    let err: BusinessError = error as BusinessError;
    console.error(`Invoke uploadFile failed, code is ${err.code}, message is ${err.message}`);
    return error
  }
}

// 拷贝图片路径到缓存
export async function copyCachePath(systemPhotoImagePath: string) {
  let cacheDir = getContext().cacheDir // 获取缓存目录
  // let endType = systemPhotoImagePath.split('.')
  // let index = endType.length - 1
  let filetype = 'pdf' // 设置图片类型
  let filename = Date.now() + '.' + filetype // 设置图片名称
  let fullPath = cacheDir + '/' + filename // 设置图片路径
  console.log('文件路径为:' + fullPath)
  const file = fs.openSync(systemPhotoImagePath, fs.OpenMode.READ_ONLY) // 打开图片
  console.log('文件路径为:' + file)
  fs.copyFileSync(file.fd, fullPath) // 复制图片

  return [fullPath, filename, filetype]
}

export async function uploadDocFile() {
  const documentViewPicker = new picker.DocumentViewPicker(getContext());
  let documentSelectOptions = new picker.DocumentSelectOptions();
  documentSelectOptions.maxSelectNumber = 1
  documentSelectOptions.fileSuffixFilters = ['.png', '.pdf', '.jpg', '.jpeg'];
  //选择是否对指定文件或目录授权，true为授权，当为true时，defaultFilePathUri为必选参数，拉起文管授权界面；false为非授权，拉起常规文管界面（可选）
  documentSelectOptions.authMode = true;
  let documentSelectResult: Array<string> = await documentViewPicker.select(documentSelectOptions)
  // 文件上传的时候一定要先拷贝一份，然后在进行上传，要不然没权限操作文件
  const context = getContext()
  const endType = documentSelectResult[0].split('.')
  const index = endType.length - 1
  const fileType = endType[index]
  // （以时间戳）生成一个新的文件名
  const fileName = Date.now() + '.' + fileType
  // 通过缓存路径+文件名 拼接出完整的路径
  const copyFilePath = context.cacheDir + '/' + fileName
  // 将文件 拷贝到 临时目录
  const file = fs.openSync(documentSelectResult[0], fs.OpenMode.READ_ONLY)
  fs.copyFileSync(file.fd, copyFilePath)
  let uploadConfig: request.UploadConfig = {
    url: 'http://xfwbzshd.crgx.net/common/upload', // 需要手动将 url 替换为真实服务器的 HTTP 协议地址
    header:{
      'Content-Type': 'multipart/form-data',
    },
    method: "POST",
    files: [{ filename: fileName, name: "file", uri: `internal://cache/${fileName}`, type: "pdf" }],
    data: [],
  };
  try {
    let uploader = await request.uploadFile(getContext(), uploadConfig)
    return uploader
  } catch (err) {
    console.error(`Failed to request the upload. err: ${JSON.stringify(err)}`);
    return err
  }
}