/**
* errorcodes:
* 101: ajaxFailed (server can't be reached.) 
* 201: checkFailed (input check failed.) 
* 
*/
var ajaxSendForm = function(opts){
	var cur = this;
	var succesCallback = null;
	var attachedTo = null;
	var method = '';
	var sendToUrl = "";
	var baseUrl = "";
	var checks = [];
	var checkErrorCallbacks = [];
	var errorCallback = null;
	
	this.init = function(){ this.setEvents(); }
	
	this.addCheck = function(name, callback, errorCallback){
			checks[name] = callback;
			checkErrorCallbacks[name] = errorCallback;
			return this;
		}
	
	this.setEvents = function(){
			$(attachedTo).submit(function(){
				if(cur.check()){ cur.submit(); }
				else{ cur.error('checkFailed', 201, 'input check failed.'); }
				return false;
			});
		}
	
	this.check = function(){
			var goon = true;
			for(i in checks){
				if($(attachedTo).find('[name='+i+']').length > 0 && !checks[i]($(attachedTo).find('[name='+i+']').val(), $(attachedTo).find('[name='+i+']'), checkErrorCallbacks[i])){
					goon = false;
				}
			}
			return goon;
		}
	
	this.error = function(a, b, c){
			// errorcallback(type, errorcode, errormessage, errorfor, errorobject);
			if(typeof a == 'object' && a instanceof XMLHttpRequest){ if(errorCallback != null) errorCallback('ajaxFailed', 101, 'server can\'t be reached.', attachedTo, c); }
			else{ if(errorCallback != null) errorCallback(a, b, c, attachedTo, null); }
		}
	
	this.sent = function(data){ if(succesCallback != null) succesCallback(data, attachedTo, cur.getUrl(), method); }
	
	this.getUrl = function(){
			if(!sendToUrl.match(/^http:\/\//)) 
				return baseUrl+sendToUrl;
			return sendToUrl;
		}
	
	this.submit = function(){
			$.ajax({
			  url: cur.getUrl(),
			  success: cur.sent,
			  error: cur.error,
			  type: method,
			  data: attachedTo.serialize()
			}); return false;
		}
	
	
	
	
	for(x in opts){
		switch(x){
			case 'baseUrl':
				baseUrl = opts[x];
			break;
			case 'succes':
			case 'succesCallback':
				succesCallback = opts[x];
			break;
			case 'error':
			case 'errorCallback':
				errorCallback = opts[x];
			break;
			case 'method':
				method = opts[x].toUpperCase();
			break;
			case 'sendToUrl':
				sendToUrl = opts[x];
			break;

			case 'attachedTo':
			case 'attachTo':
				attachedTo = $(opts[x]);
			break;
		}
	}
	if(method.length == 0){ method = attachedTo.attr('method').toUpperCase(); }
	if(sendToUrl.length == 0){ sendToUrl = attachedTo.attr('action'); }
	
	this.init();
}

// check callbacks. these are not part of the ajaxsendform script, its merely an extra. you can define these functions yourself.
// a check function can also hold a callback, you can define them using the addCheck method. 
var checkEmail = function(str, element, callback){
	if(Boolean(str.match(/^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,5}$/))){
		if(callback != undefined) callback(true, str, element);
		return true;
	}
	if(callback != undefined) callback(false, str, element);
	return false;
}

var checkNonEmpty = function(str, element, callback){

	if(str.length > 0 && str != $(element).attr('title')){
		if(callback != undefined) callback(true, str, element);
		return true;
	}
	if(callback != undefined) callback(false, str, element);
	return false;
}

var checkPhoneNumber = function(str, element, callback){
	if(/^([^\w]|[0-9])*$/.test(str) && /^[0-9]{9,13}$/.test(str.replace(/[^0-9]/gi, ''))){
		if(callback != undefined) callback(true, str, element);
		return true;
	}
	else{
		if(callback != undefined) callback(false, str, element);
		return false;	
	}

}
var checkPhoneOrMail = function(str, element, callback){

	if(checkPhoneNumber(str) || checkEmail(str)){
		if(callback != undefined) callback(true, str, element);
		return true;
	}
	else{
		if(callback != undefined) callback(false, str, element);
		return false;	
	}
}