// ==UserScript==
// @name        百度音乐助手
// @author      有一份田
// @description 百度音乐下载助手,突破百度音乐会员限制,带您自由畅享高品质音乐
// @namespace   http://userscripts.org/scripts/show/175746
// @updateURL   https://userscripts.org/scripts/source/175746.meta.js
// @downloadURL https://userscripts.org/scripts/source/175746.user.js
// @icon        http://img.duoluohua.com/appimg/script_baidumusicscript_icon_48.png
// @license     GPL version 3
// @encoding    utf-8
// @date        12/08/2013
// @modified    31/12/2013
// @include     http://music.baidu.com/song/*
// @include     http://y.baidu.com/*
// @resource    loadingimg_1 http://tieba.baidu.com/tb/img/loading.gif
// @resource    loadingimg_2 http://tieba.baidu.com/tb/static-ihome/img/loading2.gif
// @resource    downimg http://bcs.duapp.com/opensource/images/appimg/min_red_download.png
// @grant       GM_xmlhttpRequest
// @grant       GM_getResourceURL
// @run-at      document-end
// @version     1.2.6
// ==/UserScript==



/*
 * === 说明 ===
 *@作者:有一份田
 *@官网:http://www.duoluohua.com/download/
 *@Email:youyifentian@gmail.com
 *@Git:http://git.oschina.net/youyifentian
 *@转载重用请保留此信息
 *
 * */


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var APPCFG = {
    "appname": "\u767e\u5ea6\u97f3\u4e50\u52a9\u624b",
	"author": "\u6709\u4e00\u4efd\u7530",
	"version": "1.2.6",
	"hostname": location.hostname,
	"hostlist": ['music.baidu.com', 'y.baidu.com'],
	"imgres": {
		"loadingimg_1": "http://tieba.baidu.com/tb/img/loading.gif",
		"loadingimg_2": "http://tieba.baidu.com/tb/static-ihome/img/loading2.gif",
		"mouseleft": "http://static.tieba.baidu.com/tb/static-album/img/mouseleft.cur",
		"mouseright": "http://static.tieba.baidu.com/tb/static-album/img/mouseright.cur",
		"downimg": "http://bcs.duapp.com/opensource/images/appimg/min_red_download.png"
	}
};
var t = new Date().getTime();

(function () {
	var O = APPCFG['imgres'];
	for (var _ in O) {
		if (O.hasOwnProperty(_)) {
			var S = O[_];
			APPCFG['imgres'][_] = isUrl(S) ? S : GM_getResourceURL(_);
		}
	}
})();
(function () {
	var $ = unsafeWindow.$;
	if ($.inArray(APPCFG['hostname'], APPCFG['hostlist']) != 0) {
		return;
	}
	var filesInfo = {},
		albumImgCache = [],
		albumImgIndex = 0,
		songInfo = getSongInfo();
		querySong(songInfo);

	function getSongInfo(id, title, artist) {
			var path = window.location.pathname,
				arr = path.split('/'),
				id = arr[2] || id,
				p = arr[3],
				type = p && 'download' == p.toLowerCase();
			return {
					"id": "song" == arr[1].toLowerCase() ? id : "",
					"title": title || "",
					"artist": artist || "",
					"boxCss": type ? "ul" : "info-holder",
					"addNodeFun": type ? "appendChild" : "insertBefore",
					"child": type ? "lastChild" : "firstChild",
					"boxWidth": type ? "670px" : ""
				};
		}

	function querySong(opt) {
			if (!opt['id']) return;
			var box = document.getElementsByClassName(opt['boxCss']);
			if (!box.length) return;
			var node = document.createElement('div'),
				o = box[0];
			node.style.display = 'block';
			o[opt['addNodeFun']](node, o[opt['child']]);
			try {
					o.parentNode.parentNode.parentNode.style.minWidth = opt['boxWidth'];
				} catch (err) {}
			if (!GM_xmlhttpRequest) {
					showDownHtml(node, 4);
					return;
				}
			showDownHtml(node, 1);
			var id = opt.id,
				title = opt.title,
				artist = opt.artist,
				url = 'http://musicmini.baidu.com/app/link/getLinks.php?linkType=1&isLogin=1&clientVer=8.2.10.23&isHq=1&songAppend=&isCloud=0&hasMV=1&songId=' + id + '&songTitle=' + title + '&songArtist=' + artist;
			GM_xmlhttpRequest({
					"method": "GET",
					"url": url,
					"onload": function (response) {
						showDownHtml(node, 0, JSON.parse(response.responseText));
					},
					onerror: function (response) {
						showDownHtml(node, 2);
					},
					ontimeout: function (response) {
						showDownHtml(node, 3);
					}
				});
		}

	function setSongsInfo(opt) {
			var o = opt[0],
				id = o.song_id,
				lyric = o.lyric_url,
				albumImg = o.album_image_url,
				artist = o.song_artist,
				title = o.title,
				fileslist = o.file_list,
				files = [];
			for (var i = 0; i < fileslist.length; i++) {
					files.push(formatSongInfo(fileslist[i], lyric));
				}
			return {
					"id": id,
					"title": title,
					"artist": artist,
					"albumImg": albumImg,
					"lyric": lyric,
					"files": files
				};
		}

	function formatSongInfo(file) {
			var url = file.url,
				format = file.format.toLowerCase(),
				size = file.size,
				rate = file.kbps,
				i = 0,
				ratetitle = ['\u65e0 \u635f', '\u8d85 \u9ad8', '\u9ad8 \u8d28', '\u6807 \u51c6', '\u4f4e \u8d28', '\u5176 \u4ed6'];
			if (rate > 320 && format != "mp3") {
					i = 0;
				} else if (rate > 256 && rate <= 320) {
					i = 1;
				} else if (rate > 128 && rate <= 256) {
					i = 2;
				} else if (rate > 64 && rate <= 128) {
					i = 3;
				} else if (rate <= 64) {
					i = 4;
				} else {
					i = 5;
				}
			size = Math.round(size / 1048576 * 10) / 10 + 'M';
			return {
					"index": i,
					"format": format,
					"rate": rate,
					"ratetitle": ratetitle[i],
					"size": size,
					"url": url
				};
		}

	function showDownHtml(node, index, opt) {
			filesInfo = opt ? setSongsInfo(opt) : {};
			var msg = ['', '\u6570\u636e\u8d76\u6765\u4e2d', '\u8bf7\u6c42\u51fa\u9519,\u8bf7\u91cd\u8bd5\u6216\u68c0\u67e5\u662f\u5426\u4e3a\u6700\u65b0\u7248\u672c', '\u8bf7\u6c42\u8d85\u65f6,\u8bf7\u5237\u65b0\u9875\u9762\u91cd\u8bd5', '\u60a8\u7684\u6cb9\u7334\u5b50\u6269\u5c55\u6682\u65f6\u4e0d\u652f\u6301\u8be5\u811a\u672c,\u8bf7\u66f4\u65b0\u6269\u5c55\u6216\u811a\u672c\u5230\u6700\u65b0\u7248\u672c'],
				text = msg[index],
				html = makeHtml(filesInfo, text, index - 1);
			node.innerHTML = html;
			node.title = APPCFG['appname'] + ' - ' + APPCFG['author'];
			checkUpdate();
			if (opt) {
					$(node).find('a#showalbumimg').click(function () {
						setTimeout(function () {
							showAlbumImg();
						}, 0);
					});
				}
		}

	function makeHtml(filesInfo, text, type) {
			var files = filesInfo.files || [],
				html = '',
				file = '',
				url = '',
				albumImg = filesInfo.albumImg,
				lyric = filesInfo.lyric;
			html += '<div style="border:2px solid #A1CBE4;width:560px;padding-left:25px;margin:5px 0px 10px 0px;line-height:25px;">';
			html += '<div>';
			html += '<a href="' + getUpdateUrl('getnewversion', 1) + '" style="float:right;" target="_blank">';
			html += '<img id="updateimg" title="' + APPCFG['author'] + '" style="border:none;display:none;"/></a>';
			html += text ? '<font color="' + (type ? '#FF0000' : '#A1CBE4') + '"><b>' + text + '...</b></font>' : '';
			for (var i = 0; i < files.length; i++) {
					file = files[i];
					url = "http://music.baidu.com/data/music/file?link=" + file.url;
					html += '<span style="display:inline-block;min-width:200px;">';
					html += '<a style="text-decoration:underline;" href="' + url + '" title="' + file.ratetitle + '"><b>' + file.ratetitle + '</b></a>';
					html += '<span><b>&nbsp;&nbsp;&nbsp;' + file.size + '</b></span>';
					html += '<span style="color:#999999;">&nbsp;&nbsp;&nbsp;' + file.format + '&nbsp;&nbsp;' + file.rate + 'kbps</span>';
					html += '</span>';
					if (i % 2 == 1) html += '</div><div>';
				}
			html += '</div><div>';
			html += albumImg ? '<span style="margin-right:100px;"><a style="text-decoration:underline;" id="showalbumimg" href="javascript:;" title="\u4e13\u8f91\u5c01\u9762">\u4e13\u8f91\u5c01\u9762</a></span>' : '';
			html += lyric ? '<span><a style="text-decoration:underline;" href="' + lyric + '" title="\u4e0b\u8f7d\u6b4c\u8bcd">LRC\u6b4c\u8bcd</a></span>' : '';
			html += '</div></div>';
			return html;
		}

	function showAlbumImg() {
			var $ = unsafeWindow.$;
			var url = 'http://tingapi.ting.baidu.com/v1/restserver/ting?method=baidu.ting.song.play&songid=' + songInfo['id'],
				httpHwnd = null,
				mousePosition = 0,
				albumImgKey = ['pic_small', 'pic_big', 'pic_radio', 'pic_premium', 'pic_huge'],
				imgres = [
				APPCFG['imgres']['mouseleft'], //'http://static.tieba.baidu.com/tb/static-album/img/mouseleft.cur',
				APPCFG['imgres']['mouseright'], //'http://static.tieba.baidu.com/tb/static-album/img/mouseright.cur',
				APPCFG['imgres']['loadingimg_1'] //'http://tieba.baidu.com/tb/img/loading.gif'    
				],
				modal = new $.modal({
					show: true
				}),
				box = $('<div/>').css({
					"left": "50%",
					"top": "50%",
					"position": "absolute",
					"min-height": "240px",
					"min-width": "240px",
					"z-index": $.getzIndex()
				}).appendTo("body"),
				dialogClose = function () {
					if (httpHwnd) {
						httpHwnd.abort();
					}
					modal.remove();
					box.remove();
				},
				loadingImg = $('<img src="' + imgres[2] + '"/>').css({
					"height": "32px",
					"width": "32px",
					"margin-left": "-16px",
					"margin-top": "-16px"
				}).appendTo(box),
				loadImg = function () {
					var img = new Image();
					img.src = albumImgCache[albumImgIndex];
					img.onload = function () {
						var h = img.height,
							w = img.width,
							o = $(img);
						loadingImg.remove();
						o.attr('title', w + 'x' + h).css({
								"height": h + "px",
								"width": w + "px",
								"margin-left": "-" + w / 2 + "px",
								"margin-top": "-" + h / 2 + "px",
								"border-radius": "3px",
								"box-shadow": "0 0 10px rgba(127, 173, 220, 0.8), 0 0 10px #7FADDC inset"
							}).mousemove(function (e) {
								var i = o.offset();
								mousePosition = (e.pageX - i.left < w / 2) ? 0 : 1;
								o.css({
									"cursor": 'url("' + imgres[mousePosition] + '"), pointer'
								});
							}).mouseout(function () {
								o.css({
									"cursor": "pointer"
								});
							}).click(function (event) {
								changeAlbumImg(o);
								event.stopPropagation();
							}).appendTo(box);
					}
				},
				changeAlbumImg = function (o) {
					var len = albumImgCache.length,
						_ = albumImgIndex;
					albumImgIndex += mousePosition ? 1 : -1;
					albumImgIndex = albumImgIndex >= len ? len - 1 : (albumImgIndex <= 0 ? 0 : albumImgIndex);
					if (_ != albumImgIndex) {
							o.remove();
							loadingImg.appendTo(box);
							loadImg();
						}
				};
			if (albumImgCache.length) {
					loadImg();
				} else {
					httpHwnd = GM_xmlhttpRequest({
						"method": "GET",
						"url": url,
						"onload": function (response) {
							var html = response.responseText,
								o = JSON.parse(html);
							if (o.error_code == '22000') {
									var C = o.songinfo;
									for (var i = 0; i < albumImgKey.length; i++) {
										var _ = albumImgKey[i];
										if (isUrl(C[_])) {
											albumImgCache.push(C[_]);
										}
									}
								}
							if ($.inArray(filesInfo.albumImg, albumImgCache) == -1) {
									albumImgCache.push(filesInfo.albumImg);
								}
							loadImg();
						}
					});
				}
			box.click(dialogClose);
			modal.element.click(dialogClose);
		}

})();

(function () {
	var $ = unsafeWindow.$;
	if ($.inArray(APPCFG['hostname'], APPCFG['hostlist']) != 1) {
		return;
	}
	var songInfo = {
		"songids": [],
		"songbox": []
	},
		domBox = [];
	$('#pageWrapper').bind('DOMNodeInserted', function (e) {
			var o = $(this).find('.playlist');
			if (o.length) {
				var tmpBox = [];
				$.each(o, function (k, v) {
					if ($.inArray(v, domBox) == -1) {
						domBox.push(v);
						tmpBox.push(v);
					}
				});
				if (tmpBox.length) {
					var tmpInfo = getSongInfo(tmpBox);
					setTimeout(function () {
						querySong(tmpInfo);
					}, 0);
				}
			}
		});

	function getSongInfo(arr) {
			var idArr = [],
				boxArr = [];
			for (var i = 0; i < arr.length; i++) {
					var e = arr[i],
						o = $(e).find('li.song');
					boxArr = $.merge(boxArr, o);
					for (var j = 0; j < o.length; j++) {
							var id = $(o[j]).attr('data-id');
							idArr.push(id);
						}
				}
			songInfo['songids'] = $.merge(idArr, songInfo['songids']);
			songInfo['songbox'] = $.merge(boxArr, songInfo['songbox']);
			return {
					"songids": idArr,
					"songbox": boxArr
				};
		}

	function querySong(opt) {
			showDownloadHtml();
			var url = 'http://y.baidu.com/data/songlink',
				data = 'songIds=' + encodeURIComponent(opt.songids.join(','));
			GM_xmlhttpRequest({
					"method": 'POST',
					"url": url,
					"data": data,
					"headers": {
						"Content-Type": "application/x-www-form-urlencoded"
					},
					"onload": function (response) {
						var html = response.responseText,
							o = JSON.parse(html);
						if (o['errorCode'] == '22000') {
								showDownloadHtml(o['songs']);
							}
					}
				});
		}

	function getDownloadUrl(o, id, url) {
			var data = o.attr('data-song'),
				obj = JSON.parse(data),
				baseurl = 'http://music.baidu.com/data/music/file?link=';
			if (obj['is_charge'] === '0' && obj['artist_info']['fr_type'] == '2') {
					//url='http://y.baidu.com/data/song/download?songId='+id+'&myfn='+encodeURIComponent(obj['title']+'.mp3');
				}
			return baseurl + encodeURIComponent(url);
		}

	function showDownloadHtml(opt) {
			var boxs = songInfo['songbox'],
				icons = [
				APPCFG['imgres']['downimg'], //'http://bcs.duapp.com/opensource/images/appimg/min_red_download.png',
				APPCFG['imgres']['loadingimg_2'] //'http://tieba.baidu.com/tb/static-ihome/img/loading2.gif'
				],
				titles = [APPCFG['appname'] + ' - ' + APPCFG['author'], '\u6570\u636e\u6b63\u5728\u52a0\u8f7d\u4e2d...'];
			for (var i = 0; i < boxs.length; i++) {
					var e = boxs[i],
						o = $(e),
						id = o.attr('data-id'),
						url = 'javascript:;',
						index = 1;
					if (e.queryFinish) {
							continue;
						}
					var box = e.box || $('<span style="margin:0px 5px;"/>').insertAfter(o.find('span.title'));
					if (opt && opt[id]) {
							url = getDownloadUrl(o, id, opt[id]['link']);
							index = 0;
							e.queryFinish = true;
						}
					box.html('<a href="' + url + '" title="' + titles[index] + '"><img src="' + icons[index] + '" alt="' + titles[index] + '"></a>');
					e.box = box;
				}
		}
})();

function checkUpdate() {
	var js = 'var upinfo=document.getElementById("updateimg");';
	js += 'upinfo.src="' + getUpdateUrl('checkupdate', 1) + '";';
	js += 'upinfo.onload=function(){';
	js += 'upinfo.style.display="inline-block";';
	js += '};';
	js += '$(upinfo).parent("a").tooltip({str: \'' + APPCFG['appname'] + APPCFG['version'] + ' - <a href="http://www.duoluohua.com/download/"target="_blank">' + APPCFG['author'] + '</a>\'}).tooltip("show");';
	loadJs(js);
}

function isUrl(url) {
	return /^(http|https):\/\/([\w-]+(:[\w-]+)?@)?[\w-]+(\.[\w-]+)+(:[\d]+)?([#\/\?][^\s<>;"\']*)?$/.test(url);
}

function getUpdateUrl(action, type) {
	return 'http://app.duoluohua.com/update?action=' + action + '&system=script&appname=baidumusicscript&apppot=scriptjs&frompot=songweb&type=' + type + '&version=' + APPCFG['version'] + '&t=' + t;
}

function loadJs(js) {
	var oHead = document.getElementsByTagName('head')[0],
		oScript = document.createElement('script');
	oScript.type = 'text/javascript';
	oScript.text = js;
	oHead.appendChild(oScript);
}