import mediaLibrary from '@ohos.multimedia.mediaLibrary'
import onvifclient from '@ohos.onvifclient';
import fs from '@ohos.file.fs'
import util from '@ohos.util';
import FileUtil from '../../../common/utils/File'

interface Params{
  userName:string
  pwd:string
  ip:string
  port:string
  rlls:string
}

export default class FilePhoto{

  private params:Params
  private context:any
  private fileUtil:FileUtil
  public mediaTest

  constructor(context) {
    (async ()=>{
      const fileUtil = new FileUtil(context)
      const strConfig = await fileUtil.readFile('/mnt/hmdfs/100/account/device_view/local/files/logs/config/config3.txt');
      const config = JSON.parse(strConfig)
      const  {userName,ip,pwd,port,rlls} = config
      this.params = {userName,pwd,ip,port,rlls}
      this.context = context
      this.fileUtil = fileUtil
    })()
  }

  public async getPhoto(){
    const {params,context,fileUtil} = this;
    const {userName,pwd,ip,port,rlls} = params;
    const mediaTest = mediaLibrary.getMediaLibrary(context);
    let mediaType = mediaLibrary.MediaType.IMAGE;
    let DIR_DOCUMENTS = mediaLibrary.DirectoryType.DIR_IMAGE;
    const path = await mediaTest.getPublicDirectory(DIR_DOCUMENTS);

    return new Promise(async (resolve)=>{
      mediaTest.createAsset(mediaType, 'judge_face.jpg', path,(error,asset)=>{
        asset.open('rw', (error, fd) => {
          if (fd > 0) {
            const file_path = "/mnt/hmdfs/100/account/device_view/local/files/Pictures/judge_face.jpg"
            const result3 = onvifclient.getVideoSnapshot(`rtsp://${userName}:${pwd}@${ip}:${port}/h264/ch${rlls}/main/av_stream`,file_path,fd);
            fs.closeSync(fd);
            asset.close(fd);
            fs.lstat(file_path).then((stat) => {
              console.info("get link status succeed, the size of file is" + stat.size);
              let file = fs.openSync(file_path, fs.OpenMode.READ_WRITE);
              const size=Number(stat.size)+100
              let buf = new ArrayBuffer(size);
              let num = fs.readSync(file.fd, buf);
              const that = new util.Base64();
              const array = new Uint8Array(buf);
              const result = that.encodeToStringSync(array);//base64圖片
              fileUtil.deleteF(file_path,3)
              resolve(result)
            }).catch((err) => {
              console.info("get link status failed with error message: " + err.message + ", error code: " + err.code);
            });
          } else {
            console.error('baoyihu getVideoSnapshot File Open failed with error: ' + error);
          }
        });
      });
    })
  }
}