vk-fullhd-cache-list.js

	
	String.prototype.htmldecode = function(){
		if(!window.htmldecode_textarea) window.htmldecode_textarea = document.createElement('textarea');
		window.htmldecode_textarea.innerHTML = this;
		return window.htmldecode_textarea.value;
	}
	
	function ubtoa(str){
		return window.btoa(encodeURIComponent(str).replace(/%([0-9A-F]{2})/g, function(match, p1) {
			return String.fromCharCode('0x' + p1);
		}));
	}
	
	
	function m3u_generate(list){
		var keys = Object.keys(list);
		var data = "#EXTM3U\n"+keys.map(function(key){
			var value = list[key];
			return '#EXTINF:'+value[3]+','+value[1].htmldecode()+' - '+value[2].htmldecode()+"\n"+value[4]+"\n";
		}).join('');
		return data;
	}
	
	
	function get_file(data, filename, mime){
		if(!mime) mime = 'application/octet-stream';
		
		if(!window.URL || !window.Blob){
			window.open('data:'+mime+';base64,' + encodeURIComponent(ubtoa(data)));
			return;
		}
		
		var
			url = window.URL.createObjectURL(new Blob([data], {type: mime})),
			a = document.createElement('a')
		
		;
		a.href = url;
		a.download = filename;
		a.click();
		
		setTimeout(function(){
			a.remove();
			window.URL.revokeObjectURL(url);
		}, 1000);
		
	}
	
	function m3u_download(list, filename){
		if(!filename) filename = 'vkontakte-'+(new Date).toISOString().replace(/[^\w\d]/g, '-');
		else filename = filename.replace(/[^\w\dа-яА-ЯёЁ\(\)\[\]\- ]/g, '_');
		get_file(
			m3u_generate(list),
			filename+'.m3u',
			'audio/mpegURL'
		);
	}
  
  	var resolution = prompt('resolution? 360, 720, 1080', 720);
  
  var list = Object.keys(localStorage).reduce(function(list, k) {
		const m = k.match(/^v\.(.+_.+)$/);
		if(!m) return list;
		const id = m[1];
		const d = JSON.parse(localStorage.getItem(k));
		if(d.time > Date.now()-12*3600*1000){
      var url = d['url'+resolution];
      console.log('url = ' + url);
      if(url){
        list[id] = [null,
          d.md_author,
          d.md_title,
          d.duration,
          url];
      }
    };
		return list;
	}, {});
  
  m3u_download(list);