// Club AJAX General Purpose Code
//
// Randomizer
//
// author:
//		Mike Wilcox
// site:
//		http://clubajax.org
// support:
//		http://groups.google.com/group/clubajax
//
// clubajax.lang.rand
//
//	DESCRIPTION:
//		A randomizer library that's great for producing mock data.
//		Allows dozens of ways to randomize numbers, strings, words,
//		sentences, and dates. Includes tiny libraries of the most
//		commonly used words (in order), the most commonly used letters
//		(in order) and personal names that can be used as first or last.
//		For making sentences, "wurds" are used - words with scrambled vowels
//		so they aren't actual words, but look more like lorem ipsum. Change the
//		property real to true to use "words" instead of "wurds" (it can
//		also produce humorous results).

// 	USAGE:
// 		include file:
//			<script src="clubajax/lang/rand.js"></script>
//
// TESTS:
//		See tests/rand.html
//
(function(){
	var vowels = "eaoiu";
	var names = "Abraham,Albert,Alexis,Allen,Allison,Alexander,Amos,Anton,Arnold,Arthur,Ashley,Barry,Belinda,Belle,Benjamin,Benny,Bernard,Bradley,Brett,Ty,Brittany,Bruce,Bryant,Carrey,Carmen,Carroll,Charles,Christopher,Christie,Clark,Clay,Cliff,Conrad,Craig,Crystal,Curtis,Damon,Dana,David,Dean,Dee,Dennis,Denny,Dick,Douglas,Duncan,Dwight,Dylan,Eddy,Elliot,Everett,Faye,Francis,Frank,Franklin,Garth,Gayle,George,Gilbert,Glenn,Gordon,Grace,Graham,Grant,Gregory,Gottfried,Guy,Harrison,Harry,Harvey,Henry,Herbert,Hillary,Holly,Hope,Howard,Hugo,Humphrey,Irving,Isaak,Janis,Jay,Joel,John,Jordan,Joyce,Juan,Judd,Julia,Kaye,Kelly,Keith,Laurie,Lawrence,Lee,Leigh,Leonard,Leslie,Lester,Lewis,Lilly,Lloyd,George,Louis,Louise,Lucas,Luther,Lynn,Mack,Marie,Marshall,Martin,Marvin,May,Michael,Michelle,Milton,Miranda,Mitchell,Morgan,Morris,Murray,Newton,Norman,Owen,Patrick,Patti,Paul,Penny,Perry,Preston,Quinn,Ray,Rich,Richard,Roland,Rose,Ross,Roy,Ruby,Russell,Ruth,Ryan,Scott,Seymour,Shannon,Shawn,Shelley,Sherman,Simon,Stanley,Stewart,Susann,Sydney,Taylor,Thomas,Todd,Tom,Tracy,Travis,Tyler,Tyler,Vincent,Wallace,Walter,Penn,Wayne,Will,Willard,Willis"
	var words = "the,of,and,a,to,in,is,you,that,it,he,for,was,on,are,as,with,his,they,at,be,this,from,I,have,or,by,one,had,not,but,what,all,were,when,we,there,can,an,your,which,their,said,if,do,will,each,about,how,up,out,them,then,she,many,some,so,these,would,other,into,has,more,her,two,like,him,see,time,could,no,make,than,first,been,its,who,now,people,my,made,over,did,down,only,way,find,use,may,water,long,little,very,after,words,called,just,where,most,know,get,through,back,much,before,go,good,new,write,out,used,me,man,too,any,day,same,right,look,think,also,around,another,came,come,work,three,word,must,because,does,part,even,place,well,such,here,take,why,things,help,put,years,different,away,again,off,went,old,number,great,tell,men,say,small,every,found,still,between,name,should,home,big,give,air,line,set,own,under,read,last,never,us,left,end,along,while,might,next,sound,below,saw,something,thought,both,few,those,always,looked,show,large,often,together,asked,house,don't,world,going,want,school,important,until,form,food,keep,children,feet,land,side,without,boy,once,animals,life,enough,took,sometimes,four,head,above,kind,began,almost,live,page,got,earth,need,far,hand,high,year,mother,light,parts,country,father,let,night,following,picture,being,study,second,eyes,soon,times,story,boys,since,white,days,ever,paper,hard,near,sentence,better,best,across,during,today,others,however,sure,means,knew,its,try,told,young,miles,sun,ways,thing,whole,hear,example,heard,several,change,answer,room,sea,against,top,turned,learn,point,city,play,toward,five,using,himself,usually"
	var letters = ("etaonisrhldcmufpgwybvkjxqz").split("");
	var sites = "google,facebook,youtube,yahoo,live,bing,wikipedia,blogger,msn,twitter,wordpress,myspace,microsoft,amazon,ebay,linkedin,flickr,craigslist,rapidshare,conduit,imdb,bbc,go,aol,doubleclick,apple,blogspot,orkut,photobucket,ask,cnn,adobe,about,mediafire,cnet,espn,imageshack,livejournal,megaupload,megavideo,hotfile,paypal,nytimes,globo,alibaba,godaddy,deviantart,rediff,dailymotion,digg,weather,ning,partypoker,ehow,download,answers,twitpic,netflix,tinypic,sourceforge,hulu,comcast,archive,dell,stumbleupon,hp,foxnews,metacafe,vimeo,skype,chase,reuters,wsj,yelp,reddit,geocities,usps,ups,upload,techcrunch,pogo,pandora,latimes,usatoday,ibm,altavista,match,monster,jotspot,bettervideo,clubajax,nexplore,kayak,slashdot";
	window.rand = {
		real:false,
		words:words.split(","),
		wurds:[],
		names:names.split(","),
		letters:letters,
		sites:sites.split(","),

		toArray: function(thing){
			if(typeof(thing) == "object" && !(!!thing.push || !!thing.item)){
				var a = [];
				for(var nm in thing){ a.push(thing[nm]); }
				thing = a;
			}else if(typeof(thing) == "string"){
				if(/\./.test(thing)){
					thing = thing.split(".");
					thing.pop();
					var i = thing.length; while(i--){
						thing[i] = this.trim(thing[i]) + ".";
					};
				}else if(/,/.test(thing)){
					thing = thing.split(",");
				}else if(/\s/.test(thing)){
					thing = thing.split(" ");
				}else{
					thing = thing.split("");
				}
			}
			return thing; //Array
		},

		trim: function(s){ // thanks to Dojo:
			return String.prototype.trim ? s.trim() :
			s.replace(/^\s\s*/, '').replace(/\s\s*$/, '');
		},

		pad: function(n, amt, chr){
			var c = chr || "0"; amt = amt || 2;
			return (c+c+c+c+c+c+c+c+c+c+n).slice(-amt);
		},

		cap: function(w){
			return w.charAt(0).toUpperCase() + w.substring(1);
		},

		weight: function(n, exp){
			var rev = exp < 0;
			exp = exp===undefined ? 1 : Math.abs(exp)+1;
			var res = Math.pow(n, exp);
			return rev ? 1 - res : res;
		},

		n: function(n, w){
			return Math.floor((n || 10) * this.weight(Math.random(), w));
		},

		range: function(min, max, w){
			max = max || 0;
			return this.n(Math.abs(max-min)+1, w) + (min<max?min:max);
		},

		element: function(thing, w){
			// return rand slot, char, prop or range
			if(typeof(thing) == "number") return this.n(thing, w);
			thing = this.toArray(thing);
			return thing[this.n(thing.length, w)];
		},

		scramble: function(ary){
			var a = ary.concat([]), sd = [];
			var i = a.length; while(i--){
				sd.push(a.splice(this.n(a.length), 1)[0]);
			};
			return sd;
		},

		bignumber: function(len){
			var t="";
			while(len--){
				t += this.n(9);
			};
			return t;
		},

		date: function(o){
			o = o || {};
			var d1 = new Date(o.min || new Date());
			var d2 = new Date(o.max || new Date().setFullYear(d1.getFullYear()+(o.yearRange||1))).getTime();
			d1 = d1.getTime();
			var d = new Date(this.range(d1,d2,o.weight));
			if(o.seconds){
				return d.getTime();
			}else if(o.delimiter){
				return this.pad(d.getMonth()+1)+o.delimiter+this.pad(d.getDate()+1)+o.delimiter+(d.getFullYear());
			}
			return d;
		},

		bool: function(w){
			return this.n(2, w) < 1;
		},

		color: function(w){
			return "#"+this.pad(this.n(255, w).toString(16))+this.pad(this.n(255, w).toString(16))+this.pad(this.n(255, w).toString(16));
		},

		chars:function(min, max, w){
			var s = "", i = this.range(min, max, w); while(i--){
				s += this.letters[this.n(this.letters.length)];
			};
			return s;
		},

		name: function(cse){
			// cse: 0 title case, 1 lowercase, 2 upper case
			var s = this.names[this.n(this.names.length)];
			return !cse ? s : cse==1 ? s.toLowerCase() : s.toUpperCase();
		},

		site: function(cse){
			// cse: 0 title case, 1 lowercase, 2 upper case
			var s = this.sites[this.n(this.sites.length)];
			return !cse ? s : cse==1 ? s.toLowerCase() : s.toUpperCase();
		},

		url: function(usewww, xt){
			var w = usewww ? "www." : "";
			xt = xt || ".com";
			return "http://" + w + this.site(1) + xt;
		},

		word: function(){
			var w = this.real ? this.words : this.wurds;
			return w[this.n(w.length)];
		},

		sentences: function(minAmt, maxAmt, minLen, maxLen){
			// amt: sentences, len: words
			minAmt = minAmt || 1;
			maxAmt = maxAmt || minAmt;
			minLen = minLen || 5;
			maxLen = maxLen || minLen;
			var t = "";
			var w = this.real ? this.words : this.wurds;
			var i = this.range(minAmt, maxAmt); while(i--){
				var s = [];
				var ii = this.range(minLen, maxLen); while(ii--){
					s.push(w[this.n(w.length)])
				};
				t += this.cap(s.join(" ")) +". ";
			};
			return t;
		},

		title: function(min, max){
			min = min || 1; max = max || min; var a=[];
			var w = this.real ? this.words : this.wurds;
			var i = this.range(min, max); while(i--){
				a.push(this.cap(w[this.n(w.length)]));
			};
			return a.join(" ");
		}
	}
	rand.wurds = words.replace(/a|e|i|o|u/g, function(c){ return ("aeiou")[rand.n(5)]; }).split(",");
})();