/* 多说UserAgent插件
 * 作者：Gerald <gera2ld@163.com>
 */
!function(){
	function getRule(str,rules){
		var res=null,cls=null;
		rules.some(function(rule){
			return rule[1].some(function(r){
				var m;
				if(r[0].slice) r[0].some(function(r){
					m=str.match(r);
					return !!m;
				}); else m=str.match(r[0]);
				if(m) {
					if(r[1]) res=r[1](m);
					else res=m[0];
					cls=rule[0];
					return true;
				} else return false;
			});
		});
		return [res,cls];
	}
	function parseAgent(a){
		var rules_os=[
			['windows',[
				[/Windows ?([^;)]*)/i,function(m){
					var ver={
						'4.90':'ME',
						'NT3.51':'NT 3.11',
						'NT4.0':'NT 4.0',
						'NT 5.0':'2000',
						'NT 5.1':'XP',
						'NT 5.2':'XP',
						'NT 6.0':'Vista',
						'NT 6.1':'7',
						'NT 6.2':'8',
						'NT 6.3':'8.1',
						'NT 6.4':'10',
						'ARM':'RT',
					}[m[1]];
					return 'Windows'+(ver?' '+ver:'山寨版');
				}],
				[/Windows Phone(?: OS)? ?([^; )]*)/i],
			]],
			['mac',[
				[/iPhone|iPod|iPad/i],
				[/Mac OS X/i],
			]],
			['android',[
				[/Android ?([^; )]*)/i],
			]],
			['linux',[
				[/Linux/i],
			]],
		],rules_br=[
			['opera',[
				[/Opera Mini\/\d+/i,function(m){
					return m[0].replace('/',' ');
				}],
				[[/OPR\/(\S+)/i,/Presto\/.*?Version\/(\S+)/i],function(m){
					return 'Opera '+m[1];
				}],
			]],
			['maxthon',[
				[/Maxthon\/(\S+)/i,function(m){
					return m[0].replace('/',' ');
				}],
			]],
			['chrome',[
				[/Chrome\/(\S+)/i,function(m){
					return m[0].replace('/',' ');
				}],
			]],
			['safari',[
				[/Version\/(\S+) .*?Safari\//i,function(m){
					return 'Safari '+m[1];
				}],
			]],
			['firefox',[
				[/Firefox\/(\S+)/i,function(m){
					return m[0].replace('/',' ');
				}],
			]],
			['ie',[
				[/MSIE (\d+)\.0/i,function(m){
					return 'Internet Explorer '+m[1];
				}],
				[/Trident\/(\d+)\.0/i,function(m){
					return 'Internet Explorer '+(m[1]+4);
				}],
			]],
		],result={os:'山寨系统',os_cls:'other',br:'山寨浏览器',br_cls:'other'},r;
		r=getRule(a,rules_os);if(r[0]) {result.os=r[0];result.os_cls=r[1];}
		r=getRule(a,rules_br);if(r[0]) {result.br=r[0];result.br_cls=r[1];}
		return result;
	}
	function callBefore(local,args){
		var e=args[0];
		if(args.length==1)	// embed.unstable.js
			e=e.post;
		local.agent=parseAgent(e.agent);
		local.webmaster=e.author_id==duoshuoQuery.myId;
	}
	function callAfter(local,args){
		var r=local.result,a=local.agent,
				i=r.indexOf('<div class="ds-comment-header">'),
				j=r.indexOf('</div>',i);
		local.result=r.slice(0,j)+getUAString(local)+r.slice(j);
	}
	var getUAString=duoshuoQuery.getUAString||function(local){
		var a=local.agent;
		return '<div class="ds-os ds-os-'+a.os_cls+'">'+a.os+'</div>'+
			'<div class="ds-br ds-br-'+a.br_cls+'">'+a.br+'</div>'+
			(local.webmaster?'<div class=ds-webmaster>天下第一帅的站长</div>':'');
	},ondomready=duoshuoQuery.ondomready;
	duoshuoQuery.ondomready=function(){
		if(ondomready) ondomready();
		var post=DUOSHUO.templates.post;
		DUOSHUO.templates.post=function(){
			var local={},args=arguments;
			callBefore.call(this,local,args);
			local.result=post.apply(this,args);
			callAfter.call(this,local,args);
			return local.result;
		}
	};
}();