vk_audio_list_discover.js

// url deobfuscation function '129' from audioplayer.js
(function(t, i) {
	"use strict";
	
	function e(t) {
		if (~t.indexOf("audio_api_unavailable")) {
			var i = t.split("?extra=")[1].split("#"),
				e = o(i[1]);
			if (i = o(i[0]), !e || !i) return t;
			e = e.split(String.fromCharCode(9));
			for (var a, r, l = e.length; l--;) {
				if (r = e[l].split(String.fromCharCode(11)), a = r.splice(0, 1, i)[0], !s[a]) return t;
				i = s[a].apply(null, r)
			}
			if (i && "http" === i.substr(0, 4)) return i
		}
		return t
	}
	
	function o(t) {
		if (!t || t.length % 4 == 1) return !1;
		for (var i, e, o = 0, s = 0, r = ""; e = t.charAt(s++);) e = a.indexOf(e), ~e && (i = o % 4 ? 64 * i + e : e, o++ % 4) && (r += String.fromCharCode(255 & i >> (-2 * o & 6)));
		return r
	}
	Object.defineProperty(i, "__esModule", {
		value: !0
	}), i.audioUnmaskSource = e;
	var a = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMN0PQRSTUVWXYZO123456789+/=",
		s = {
			v: function(t) {
				return t.split("").reverse().join("")
			},
			r: function(t, i) {
				t = t.split("");
				for (var e, o = a + a, s = t.length; s--;) e = o.indexOf(t[s]), ~e && (t[s] = o.substr(e - i, 1));
				return t.join("")
			},
			x: function(t, i) {
				var e = [];
				return i = i.charCodeAt(0), each(t.split(""), function(t, o) {
					e.push(String.fromCharCode(o.charCodeAt(0) ^ i))
				}), e.join("")
			}
		}
})(0, window);

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 vk_full_id(element){
	if(typeof(element.length) == 'undefined') return element.dataset.fullId;
	var audio_arr = element;
	return audio_arr[AudioUtils.AUDIO_ITEM_INDEX_OWNER_ID]+'_'+audio_arr[AudioUtils.AUDIO_ITEM_INDEX_ID];
}

function vk_storage_key(audio_arr){
	return 'au.'+vk_full_id(audio_arr);
}

function vk_audio_data(element, onurl, nonetwork){
	
	var audio_arr = typeof(element.length) == 'undefined' ? AudioUtils.getAudioFromEl(element) : element;
	
	if(audio_arr[AudioUtils.AUDIO_ITEM_INDEX_URL]){
		audio_arr[AudioUtils.AUDIO_ITEM_INDEX_URL] = window.audioUnmaskSource(audio_arr[AudioUtils.AUDIO_ITEM_INDEX_URL]);
		onurl(element, audio_arr);
		return audio_arr;
	}
	
	var url = localStorage.getItem(vk_storage_key(audio_arr));
	if(url){
		audio_arr[AudioUtils.AUDIO_ITEM_INDEX_URL] = url;
		onurl(element, audio_arr);
		return audio_arr;
	}
	
	if(nonetwork){
		onurl(element, audio_arr);
		return audio_arr;
	}
	
	ap._ensureHasURL(audio_arr, function(t) {
		audio_arr[AudioUtils.AUDIO_ITEM_INDEX_URL] = window.audioUnmaskSource(t[AudioUtils.AUDIO_ITEM_INDEX_URL]);
		if(audio_arr[AudioUtils.AUDIO_ITEM_INDEX_URL]) localStorage.setItem(vk_storage_key(audio_arr), audio_arr[AudioUtils.AUDIO_ITEM_INDEX_URL]);
		onurl(element, audio_arr);
	});
	
	return audio_arr;
}

function vk_audio_list_discover(list, onend, bulk){
	if(typeof(bulk) == 'undefined') bulk = true;
	var list_done = [];
	var skip = 0;
	var period = 2000;
	var error_sleep = 80*1000;
	var list_chunk_size = 10;
	
	var list = [].map.call(list, function(element){ return element; }); // convert nodelist to array
	var requested = list.length;
	
	var busy = false;
	var ct = setInterval(function(){
		if(busy) return;
		if(skip){ skip--; return; }
		if(!requested){
			clearInterval(ct);
			onend(list_done);
			return;
		}
		
		busy = true;
		
		//console.log('requested', requested);
		if(bulk){
			
			var
				elements = [],
				add_num = Math.min(list_chunk_size, list.length)
			;
			
			while(elements.length < add_num){
				var element = list.shift();
				
				vk_audio_data(element, function(e, audio_arr){
					if(audio_arr[AudioUtils.AUDIO_ITEM_INDEX_URL]){
						list_done.push(audio_arr);
						requested--;
						return;
					}
					elements.push(e);
				}, true);
				
			};
			
			var fullIds = elements.map(vk_full_id).join(',');
			
			ajax.post("al_audio.php", {
				act: "reload_audio",
				al: 1,
				ids: fullIds
			}, {
				onDone: function(sub_list, a) {
					//console.log(sub_list, a);
					if(sub_list){
						while(sub_list.length){
							var audio_arr = sub_list.shift();
							if(audio_arr[AudioUtils.AUDIO_ITEM_INDEX_URL]){
								
								vk_audio_data(audio_arr, function(e, audio_arr){
									if(audio_arr[AudioUtils.AUDIO_ITEM_INDEX_URL]) localStorage.setItem(vk_storage_key(audio_arr), audio_arr[AudioUtils.AUDIO_ITEM_INDEX_URL]);
									list_done.push(audio_arr);
									requested--;
								}, true);
								
							}else{
								console.log('no url in', audio_arr);
								for(var i=0; i<elements.length; i++){
									if(vk_full_id(audio_arr) == vk_full_id(elements[i])){
										list.push(elements[i]);
										break;
									}
								}
							}
						}
					}else{
						while(elements.length) list.push(elements.shift());
						skip = Math.round(error_sleep/period);
						return;
					}
					
					busy = false;
				}
			});
			
			
			
		}else{
			
			var element = list.shift();
			
			vk_audio_data(element, function(element, audio_arr){
				if(audio_arr[AudioUtils.AUDIO_ITEM_INDEX_URL]){
					list_done.push(audio_arr);
					requested--;
				}else{
					list.push(element);
					skip = Math.round(error_sleep/period);
					return;
				}
				busy = false;
			});
			
		}
		
		
	}, period);
	
}

// example
vk_audio_list_discover(document.querySelectorAll('.audio_row'), function(list){
	console.log('discovered list', list);
});