// 

function setOkCookie(name,value,expires) {
    setCookie(name,value,expires);
}

function deleteOkCookie(name) {
    deleteCookie(name);
}

// -----------------------------------------------------------------------------------

function getPageTopDomain() {
 var host = window.location.host;
 var parts = host.split('.');
 var res = parts[parts.length-2] + "." + parts[parts.length-1];
 if (res.indexOf(':') != -1) {
	 res = res.substr(0,res.indexOf(':'));
 }
 return res;
}

function secondsFromNow (sec) {
   res = new Date();
   res.setTime(new Date().getTime() + sec * 1000);
   return res;
}

// -----------------------------------------------------------------------------------

function setCookie(name,value,expires) {
  var curCookie = name + "=" + escape(value) +
      ((expires) ? "; expires=" + expires.toGMTString() : "") +
      "; path=/"+
      "; domain=" + getPageTopDomain();
  document.cookie = curCookie;
}
function deleteCookie(name) {
  if (getCookie(name)) {
    document.cookie = name + "=" +
    "; domain=" + getPageTopDomain() + 
    "; path=/"+
    "; expires=Thu, 01-Jan-70 00:00:01 GMT";
  }
}
function getCookie(name) {
	var dc = document.cookie;
  	var prefix = name + "=";
  	var begin = dc.indexOf("; " + prefix);
  	if (begin == -1) {
    	begin = dc.indexOf(prefix);
    	if (begin != 0) return null;
  	} 
	else
    	begin += 2;
  	var end = document.cookie.indexOf(";", begin);
  	if (end == -1)
    	end = dc.length;
  return unescape(dc.substring(begin + prefix.length, end));
}

 /* 
 */

function addNewCoresToCookie(file_nums, hash) {
	 var old_cookie = getCookie("core");
	 var old_cookie_parts = [];
	 var new_cookie = old_cookie;
	 if (old_cookie)
		old_cookie_parts = old_cookie.split(":");
	 if (old_cookie_parts.length == 0 || old_cookie_parts[0] != hash)
		old_cookie
	 if (! old_cookie || old_cookie.split(":")[0] != hash)
		new_cookie = hash;
	 var new_addition = file_nums.join(",");
	 for (var i = 1; i < old_cookie_parts.length && old_cookie_parts[0] == hash; i++) {
		 if (old_cookie_parts[i] == new_addition) {
			 return;
		 }
	 }
	 new_cookie += ":" + new_addition;
	 setCookie("core", new_cookie, secondsFromNow(86400 * 30));
}

// Backwards compatibility, but limit miniCookies to 3600 seconds.
 
function setMiniCookie(name,value) {
	NanoCookie.set(name,value,{ms:3600*1000});
}

function deleteMiniCookie(name) {
	NanoCookie.remove(name);
}

function getMiniCookie(name) {
	return NanoCookie.get(name);
}

// 
NanoCookie = {
	
	// 
	set : function(key,value,expires,test) {
		var cookies = this.deserialize();
		var d = new Date();
		var obj = new Object();
		obj["k"] = key;
		obj["v"] = value;
		if (expires.ms)
			obj["e"] = d.getTime() + parseInt(expires.ms);
		else if (expires.gmt)
			obj["e"] = expires.gmt;
		else
			obj["e"] = expires.date.getTime();
		if (isNaN(obj["e"]))
			obj["e"] = 0;
		var found = false;

		for (var i = 0; i < cookies.length; i++) {
			if (cookies[i]["k"] == key) {
				cookies[i] = obj;
				found = true;
			}
		}
		if (! found)
			cookies.push(obj);
		this.serializeAndStore(cookies);
	},
	get : function(key) {
		var cookies = this.deserialize();
		for (var i = 0; i < cookies.length; i++) {
			if (cookies[i]["k"] == key) {
				return cookies[i]["v"];
			}
		}
		return null;
	},	
	// 
	getAll : function(nano_cookie_str) {
		var cookies = this.deserialize(nano_cookie_str);
		var res = [];
		for (var i = 0; i < cookies.length; i++) {
			var obj = new Object();
			obj["key"] = cookies[i]["k"];
			obj["value"] = cookies[i]["v"];
			obj["expires"] = new Date(cookies[i]["e"]);
			res.push(obj);
		}
		return res;		
	},
	// 
	findRegExp : function(regexp) {
		var cookies = this.deserialize();
		var res = [];
		for (var i = 0; i < cookies.length; i++) {
			if (regexp.test(cookies[i]["k"])) {
				var obj = new Object();
				obj["key"] = cookies[i]["k"];
				obj["value"] = cookies[i]["v"];
				obj["expires"] = new Date(cookies[i]["e"]);
				res.push(obj);
			}
		}
		return res;
	},
	remove : function(key) {
		this.set(key,"",{ms:-1},true);		
	},
	removeAll : function() {
		deleteCookie("nano");
	},
	//
	// gets from cookie called "nano" ; alternatively you 
	// can pass it your own cookie and it'll deserialize that
	deserialize : function(nano_cookie_str) {

		var x = nano_cookie_str ? nano_cookie_str : getCookie("nano");
		
		var result = [];
		if (! x)
			return result;
		else {
			var individuals = x.split("|");
			for (var i = 0; i < individuals.length; i++) {
				var obj = new Object();
				var pairs = individuals[i].split(",");
				for (var j = 0; j < pairs.length; j++) {
					var pair = pairs[j].split("=");
					var val = unescape(pair[1]);
					var pval = parseInt(val);
					if (pval == val && ! isNaN(pval))
						val = pval;
					obj[pair[0]] = val;
				}
				result.push(obj);				
			}
			result.sort(this.compareDates);
			// 
			var d = new Date();
			var any_stripped = false;
			while(result.length > 0 && new Date(result[result.length - 1]["e"]) < d) {
				result.length--;
				any_stripped = true;
			}
			return result;
		}
	},
	// 
	serializeAndStore : function(cookies) {
		var res = "";
		for (var i = 0; i < cookies.length; i++) {
			res += (i == 0) ? "" : "|";
			res += "k=" + escape(cookies[i]["k"]);
			res += ",e=" + escape(cookies[i]["e"]);
			res += ",v=" + escape(cookies[i]["v"]);
		}
		setCookie("nano", res, secondsFromNow(3600*24*365));
	},
	compareDates : function(a,b) {
		if (a["e"] && b["e"])
			return ((a["e"] < b["e"]) ? 1 : ((a["e"] > b["e"]) ? -1 : 0));
	}
};