const { spawn } = require('child_process');
const {Notification,ipcMain}= require('electron');
const dl_routine = require('./youtube-dl.routine')
const nodeID3 = require('node-id3');

//const web = require('./webLoader/router');

const pot = require('./player_onTop');
const folderWatchr = require('./watchr')
console.log(global.dir);

var orig_path = "";
var path = "";
var format = "mp3";
var fol = null;

var pot_open_ev = null;
var request = require('request').defaults({ encoding: null });

ipcMain
.on('start-download', (event, arg)=>{
  path = orig_path
  var download = new yt_dl(arg.url,arg.id);
  download.addListen(event)
  download.download();
})
.on('set-format',(event,arg)=>{
    format = arg.format;
})
.on('start-download-pl', (event, arg)=>{
    var mkdirp = require('mkdirp');
    if(orig_path === ""){
        path = '.'
    }else{
        path = orig_path
    }
    mkdirp(path+'/'+arg.folder, function(err) {
        path = path+'/'+arg.folder;
        // path exists unless there was an error
        var download = new yt_dl(arg.url,arg.id);
        download.addListen(event)
        download.download();
    });
})
.on('setPath', function(event, arg) {
  path = arg.path;
  orig_path = arg.path;
  if(fol !== null){
      fol.destroy()
  }
  fol = new folderWatchr(path);
  console.log('SET Path: '+path)
});

var yt_dl = class{
    constructor(url,id){
        this.url = url ;
        this.percent = 0;
        this.lwrite = null;
        this.id = id;
    }
    addListen(e){
        this.lwrite = e
    }
    status(stat){
        this.lwrite('download-progress', stat);
    }
    download(){
        var log = [];
        var me = this;
        var ls;

        var m = dl_routine(path,this.url,format);
        ls = spawn(m[0],m[1]);





        if(path == ''){
            //ls = spawn(global.dir+'/lib/youtube-dl', ['-x','--audio-format','mp3','-i',this.url]);
        }else{
            //ls = spawn(global.dir+'/lib/youtube-dl', ['-x','--audio-format','mp3','-i',this.url,'-o',path+'/%(title)s.%(ext)s']);
        }

        ls.stdout.on('data', (data) => {
            data = data.toString('utf8');
            log.push(data);
          //console.log(data);
          try{
              var z = data.replace(/(\r\n|\n|\r)/gm,"").split(' ');
              console.log(z)
              switch (z[0]) {
                  case '[download]':
                      var percent = data.split(']')[1].split('of')[0];
                      //console.log(z)
                      me.percent = percent.trim();
                      me.lwrite.sender.send('download-progress',{percent :me.percent,id:me.id});
                      break;
                  default:
              }
              var m = z.length;
              for(var i = 0;i<m;i++){
                  if(z[i] === '[ffmpeg]'){
                      if(z[i+1] === 'Merging'){
                          var file = "";
                          for(var x = i+4;x<m;x++){
                              console.log(z[x])
                              if(z[x] === 'has' && z[x+1] === "already" && z[x+2] === "been" && z[x+3] === 'downloaded'){
                                  break;
                              }
                              file = z[x];
                          }
                          me.lwrite.sender.send('file',{id:me.id,file:file});
                          break;
                      }
                  }
              }
          }catch(e){
              console.log(e);
          }finally{

          }
        });
        ls.stderr.on('data', (data) => {
          console.log(`stderr: ${data}`);
        });
        ls.on('close', (code) => {
          console.log(`child process exited with code ${code}`);

          switch(format){
              case "wma":
                me.lwrite.sender.send('process-fin',{percent :101,id:me.id});
                setTimeout(function(){
                    var fo = log[log.length-2].split('[ffmpeg] Destination: ')[1].replace(/\\/g,'/').trim();
                    var f = fo.replace('.mp3','.'+format);
                    console.log(f)
                    const bat = spawn(global.dir+'/lib/ffmpeg', ['-i',fo,f,'-loglevel','repeat+level+verbose']);
                    console.dir(bat)
                    bat.stdout.on('data', (data) => {
                    console.log(data.toString());
                    });
    
                    bat.stderr.on('data', (data) => {
                    console.log(data.toString());
                    });
    
                    bat.on('exit', (code) => {
                        console.log(`Child exited with code ${code}`);
                        me.lwrite.sender.send('file',{id:me.id,file:log[log.length-2].split('[ffmpeg] Destination: ')[1]});
                        me.lwrite.sender.send('process-fin',{percent :me.percent,id:me.id});
                    });
                },2000)

                break;
              default:
                me.lwrite.sender.send('file',{id:me.id,file:log[log.length-2].split('[ffmpeg] Destination: ')[1]});
                me.lwrite.sender.send('process-fin',{percent :me.percent,id:me.id});
                break;
          }




         /* if(this.url.match('youtube')){
              var url = this.url;
              var video_id = this.url.split('v=')[1];
              var ampersandPosition = video_id.indexOf('&');
              if (ampersandPosition != -1) {
                  video_id = video_id.substring(0, ampersandPosition);
              }
              /*
              var x = new Notification({
                  title:"Cyb3r Downloader",
                  body :"finished download for "+url,
                  //icon : body
              })
              x.show()
            //request.get('https://i.ytimg.com/vi/'+video_id+'/hqdefault.jpg', function (err, res, body) {


                //log[log.length-2].split('[ffmpeg] Destination: ')[1]

                /*var tags = {
                  image: body
                }
                var success = nodeID3.write(tags, log[log.length-2].split('[ffmpeg] Destination: ')[1]);
                console.log(success);
            });
          }*/
        });
    }
}

module.exports = yt_dl;