//http://www.webtoolkit.info/javascript-trim.html
function trim(str, chars) {
    return ltrim(rtrim(str, chars), chars);
}
function ltrim(str, chars) {
    chars = chars || "\\s";
    return str.replace(new RegExp("^[" + chars + "]+", "g"), "");
}
function rtrim(str, chars) {
    chars = chars || "\\s";
    return str.replace(new RegExp("[" + chars + "]+$", "g"), "");
}

//http://www.w3schools.com/Ajax/ajax_server.asp
function getXmlHttp () {
	var xmlHttp;
	try {  // Firefox, Opera 8.0+, Safari
		xmlHttp = new XMLHttpRequest();
	}
	catch (e) {  // Internet Explorer
		try {
			xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e) {
			try {
				xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e) {
				alert("Your browser does not support AJAX!");
				return false;
			}
		}
	}
	return xmlHttp;
}

function getAjaxAvatarUrl (imageId, username) {
	var xmlHttp = getXmlHttp();
	if (xmlHttp) {
		xmlHttp.onreadystatechange = function() {
			if(xmlHttp.readyState == 4) {
				var text = trim(xmlHttp.responseText);
				text = text.replace("&", "&");
				text = URLEncode(text)
				var imagePath = "";
				if (text)
					imagePath = globalApiRoot + "api/media/image/crop/1/any?image=" + text;
				else
					imagePath = "/cs/themes/hawaii/common/images/anonymous.gif";
				/*var objText = document.createElement("textarea");
				document.body.appendChild(objText);
				objText.value = imagePath*/
				setAvatarImageSrc(imageId, imagePath);
			}
		}
		var fullPath = "/cs/Themes/hawaii/User/getAvatarUrl.aspx?Username=" + username;
		xmlHttp.open("GET", fullPath, true);
		xmlHttp.send(null);
	}
}

function cropUserAvatarTurbo (imageId, imagePath) {
	if (imagePath)
		imagePath = globalApiRoot + "api/media/image/crop/1/any?image=" + URLEncode(trim(imagePath).replace("&", "&"));
	else
		imagePath = "/cs/themes/hawaii/common/images/anonymous.gif";
	setAvatarImageSrc(imageId, imagePath);
}

function cropUserAvatar (imageId, username) {
	getAjaxAvatarUrl(imageId, username);
}

function getGarmentIds (objInput, badgeId) {
	var xmlHttp = getXmlHttp();
	if (xmlHttp) {
		xmlHttp.onreadystatechange = function() {
			if(xmlHttp.readyState == 4) {
				var text = trim(xmlHttp.responseText);
				objInput.value = text;
			}
		}
		//var fullPath = globalSiteRoot + "api/media/context/outfit/1/get?id=" + badgeId;
		var fullPath = globalSiteRoot + "api/media/context/outfit/2/get?id=" + badgeId;
		//var objInputTemp = document.createElement("input");
		//objInputTemp.value = fullPath;
		//document.body.appendChild(objInputTemp);
		//objInput.value = "278935,279269,280319,280827";
		try {
			xmlHttp.open("GET", fullPath, true);
			xmlHttp.send(null);
		}
		catch (e) {
			window.status = "Error description: " + e.description;
			return false;
		}
	}
}

//http://www.albionresearch.com/misc/urlencode.php
function URLEncode (plaintext) {
	// The Javascript escape and unescape functions do not correspond
	// with what browsers actually do...
	var SAFECHARS = "0123456789" +					// Numeric
					"ABCDEFGHIJKLMNOPQRSTUVWXYZ" +	// Alphabetic
					"abcdefghijklmnopqrstuvwxyz" +
					"-_.!~*'()";					// RFC2396 Mark characters
	var HEX = "0123456789ABCDEF";

	var encoded = "";
	for (var i = 0; i < plaintext.length; i++ ) {
		var ch = plaintext.charAt(i);
	    if (ch == " ") {
		    encoded += "+";				// x-www-urlencoded, rather than %20
		} else if (SAFECHARS.indexOf(ch) != -1) {
		    encoded += ch;
		} else {
		    var charCode = ch.charCodeAt(0);
			if (charCode > 255) {
			    alert( "Unicode Character '" 
                        + ch 
                        + "' cannot be encoded using standard URL encoding.\n" +
				          "(URL encoding only supports 8-bit characters.)\n" +
						  "A space (+) will be substituted." );
				encoded += "+";
			} else {
				encoded += "%";
				encoded += HEX.charAt((charCode >> 4) & 0xF);
				encoded += HEX.charAt(charCode & 0xF);
			}
		}
	}

	return encoded;
}

function URLDecode(encoded) {
   // Replace + with ' '
   // Replace %xx with equivalent character
   // Put [ERROR] in output if %xx is invalid.
   var HEXCHARS = "0123456789ABCDEFabcdef"; 

   var plaintext = "";
   var i = 0;
   while (i < encoded.length) {
       var ch = encoded.charAt(i);
	   if (ch == "+") {
	       plaintext += " ";
		   i++;
	   } else if (ch == "%") {
			if (i < (encoded.length-2) 
					&& HEXCHARS.indexOf(encoded.charAt(i+1)) != -1 
					&& HEXCHARS.indexOf(encoded.charAt(i+2)) != -1 ) {
				plaintext += unescape( encoded.substr(i,3) );
				i += 3;
			} else {
				alert( 'Bad escape combination near ...' + encoded.substr(i) );
				plaintext += "%[ERROR]";
				i++;
			}
		} else {
		   plaintext += ch;
		   i++;
		}
	}
   return plaintext;
}

function setAvatarImageSrc (imageId, imagePath) {
	var objImage = document.getElementById(imageId);
	objImage.src = imagePath;
}