var search_history={},cache_list={};
function search(){
	var country=text.value;
	// var country="日本"; 
	var token=country;
	var elm_msg=document.getElementById("message");
	function message(msg){
		elm_msg.innerHTML=msg;
	}
	function check_change_word(){
		//if(token != text.value) throw token;
	}
	document.getElementById("items").innerHTML="";
	message("loading "+country);
	next(function(){
		// 語句を日本語へ変換
		check_change_word();
		if(country.match(/[^\x00-\x7f]/)){
			return country; // たぶん日本語
		}else{
			return API.en2ja(country);
		}
	}).next(function(jcountry){
		var cache_key=(document.getElementById("trans").checked) ? "1":"0";
		cache_key+=jcountry;
		if(cache_list[cache_key]){
			return cache_list[cache_key];
		}
		return next(function(){ // if no cache start
			// 語句の準備
			check_change_word();
			return parallel({
				country: API.ja2en(jcountry).next(function(c){
					return c;
				}),
				people: API.country2people(jcountry).next(function(p){
					return p;
				})
			});
		}).next(function(res){
			// 得られた語句からフレーズ生成
			check_change_word();
			message("fetching country images..");
			var queries=[];
			var stack=function(q){
				queries.push(API.suggest(q));
			}
			stack(res.people+" should");
			stack(res.people+" become");
			stack(res.people+" people are");
			stack("why are "+res.people);
			stack("what "+res.people);
			stack(res.country+" should");
			stack(res.country+" become");
			stack(res.country+" have");
			stack(res.country+" is ");
			stack("why are "+res.country);
			return parallel(queries);
		}).next(function(items){
			// 日本語訳するならここで。
			check_change_word();
			if(!document.getElementById("trans").checked) return items;
			message("日本語翻訳中...");
			var q=[];
			function stack(item){
				q.push(
					next(function(){
						return API.en2ja(item.quote);
					}).next(function(w){
						item.quote=w;
						return item;
					})
				);
			}
			for(var i=0,len=items.length; i<len; i++){
				if(!items[i]){ continue; }
				for(var j=0,len2=items[i].length; j<len2; j++){
					stack(items[i][j]);
				}
			}
			return parallel(q);
		}).next(function(res){
			// サジェスト結果を表示
			message("displaying results...");
			var ret=[];
			for(var i=0,len=res.length; i<len; i++){
				if(!res[i]){ continue; }
				ret=ret.concat(res[i]);
			}
			ret.sort(function(a,b){
				return b.results - a.results;
			});

			var newul=document.getElementById("items").cloneNode(false);
			var exists={};
			for(var i=0,len=ret.length; i<len; i++){
				var quote=ret[i].quote;
				if(exists[quote]) continue;
				exists[quote]=true;
				var cnt=ret[i].results,formatted=[];
				var rank=(cnt > Math.pow(10,7)) ? 1
					: (cnt > Math.pow(10,4))? 2
					: 3
					;
				while(cnt.length > 3){
					cnt=cnt.replace(/[0-9]{3}$/,function(m){
						formatted.push(m);
						return "";
					});
				}
				formatted.push(cnt);
				cnt=formatted.reverse().join(",");

				var li=document.createElement("li");
				li.className="rank"+rank;
				li.innerHTML=[
					'<a href="http://google.com/search?q=',
						encodeURIComponent(ret[i].quote),
						'">',ret[i].quote,'</a>',
					'<em>',cnt,'</em>'
				].join("");
				newul.appendChild(li);
			}
			cache_list[cache_key]=newul;
			return newul;
		}); // if no cache end
	}).next(function(newul){
		message("");
		var ul=document.getElementById("items");
		ul.parentNode.replaceChild(newul.cloneNode(true),ul);
	}).next(function(){
		// history
		var w=text.value;
		if(search_history[w]) return;
		search_history[w]=true;
		link=permalink.cloneNode(false);
		link.href="#"+w;
		link.innerHTML=w;
		link.addEventListener("click",function(){
			restore_search(w);
		},false);
		var his=document.getElementById("history");
		var li=document.createElement("li");
		li.appendChild(link);
		his.appendChild(li);
	}).error(function(e){
		//console.log(e);
		message("");
	});
}// def search end

function restore_search(w){
	text.value=w;
	search();
}