/**
 * @file   common/js/xml_js_filter.js
 * @author NAVER (developers@xpressengine.com)
 * @brief  xml filter (validator) plugin
 *
 * A rule is a method validate one field.
 * A filter is made up of one or more rules.
 **/
(function($){

	var messages  = [];
	var rules     = [];
	var filters   = {};
	var callbacks = [];
	var extras    = {};

	var Validator = xe.createApp('Validator', {
		init : function() {
			// {{{ add filters
			// email
			var regEmail = /^[\w-]+((?:\.|\+|\~)[\w-]+)*@[\w-]+(\.[\w-]+)+$/;
			this.cast('ADD_RULE', ['email', regEmail]);
			this.cast('ADD_RULE', ['email_address', regEmail]);

			// userid
			var regUserid = /^[a-z]+[\w-]*[a-z0-9_]+$/i;
			this.cast('ADD_RULE', ['userid', regUserid]);
			this.cast('ADD_RULE', ['user_id', regUserid]);

			// url
			var regUrl = /^(https?|ftp|mms):\/\/[0-9a-z-]+(\.[_0-9a-z-]+)+(:\d+)?/;
			this.cast('ADD_RULE', ['url', regUrl]);
			this.cast('ADD_RULE', ['homepage', regUrl]);

			// korean
			var regKor = new RegExp('^[\uAC00-\uD7A3]*$');
			this.cast('ADD_RULE', ['korean', regKor]);

			// korean_number
			var regKorNum = new RegExp('^[\uAC00-\uD7A30-9]*$');
			this.cast('ADD_RULE', ['korean_number', regKorNum]);

			// alpha
			var regAlpha = /^[a-z]*$/i;
			this.cast('ADD_RULE', ['alpha', regAlpha]);

			// alpha_number
			var regAlphaNum = /^[a-z][a-z0-9_]*$/i;
			this.cast('ADD_RULE', ['alpha_number', regAlphaNum]);

			// number
			var regNum = /^[0-9]*$/;
			this.cast('ADD_RULE', ['number', regNum]);

			// float
			var regFloat = /^\d+(\.\d+)?$/;
			this.cast('ADD_RULE', ['float', regFloat]);
			// }}} add filters
		},
		// run validator
		run : function(oForm) {
			var filter = '';

			if (oForm._filter) filter = oForm._filter.value;

			var params = [oForm, filter];
			var result = this.cast('VALIDATE', params);
			if (typeof result == 'undefined') result = false;

			return result;
		},
		API_ONREADY : function() {
			var self = this;

			// hook form submit event
			$('form')
				.each(function(){
					if (this.onsubmit) {
						this['xe:onsubmit'] = this.onsubmit;
						this.onsubmit = null;
					}
				})
				.submit(function(e){
					var legacyFn = this['xe:onsubmit'];
					var hasLegacyFn = $.isFunction(legacyFn);
					var bResult = hasLegacyFn?legacyFn.apply(this):self.run(this);

					if(!bResult)
					{
						e.stopImmediatePropagation();
					}
					return bResult;
				});
		},
		API_VALIDATE : function(sender, params) {
			var result = true, form = params[0], elems = form.elements, filter, filter_to_add, ruleset, callback;
			var fields, names, name, el, val, mod, len, lenb, max, min, maxb, minb, rules, e_el, e_val, i, c, r, if_, fn;

			if(elems.ruleset) {
				filter = form.elements.ruleset.value;
			} else if(elems._filter) {
				filter = form.elements._filter.value;
			}

			if(!filter) return true;

			if($.isFunction(callbacks[filter])) callback = callbacks[filter];
			filter = $.extend({}, filters[filter.toLowerCase()] || {}, extras);

			function regex_quote(str) {
				return str.replace(/([\.\+\-\[\]\{\}\(\)\\])/g, '\\$1');
			}

			// get form names
			fields = [];
			for(i=0,c=form.elements.length; i < c; i++) {
				el   = elems[i];
				name = el.name;

				if(!name || !elems[name]) continue;
				if(!elems[name].length || elems[name][0] === el) fields.push(name);
			}
			fields = fields.join('\n');

			// get field names matching patterns
			filter_to_add = {};
			for(name in filter) {
				if(!filter.hasOwnProperty(name)) continue;

				names = [];
				if(name.substr(0,1) == '^') {
					names = fields.match( (new RegExp('^'+regex_quote(name.substr(1))+'.*$','gm')) );
				} else {
					continue;
				}
				if(!names) names = [];

				for(i=0,c=names.length; i < c; i++) {
					filter_to_add[names[i]]= filter[name];
				}

				filter[name] = null;
				delete filter[name];
			}

			filter = $.extend(filter, filter_to_add);

			for(name in filter) {
				if(!filter.hasOwnProperty(name)) continue;

				f   = filter[name];
				el  = elems[name];
				if(!el)
				{
					el = elems[name + '[]'];
				}
				val = el?$.trim(get_value($(el))):'';
				mod = (f.modifier||'')+',';


				if(!el || el.disabled) continue;

				if(f['if']) {
					if(!$.isArray(f['if'])) f['if'] = [f['if']];
					for(i=0;i<f['if'].length;i++) {
						/*jslint evil: true */
						if_ = f['if'][i];
						fn  = new Function('el', 'return !!(' + (if_.test.replace(/\$(\w+)/g, '(jQuery(\'[name=$1]\').is(\':radio, :checkbox\') ? jQuery(\'[name=$1]:checked\').val() : jQuery(\'[name=$1]\').val())')) +')');
						//fn  = new Function('el', 'return !!(' + (if_.test.replace(/\$(\w+)/g, 'el["$1"].value')) +')');
						if(fn(elems)) f[if_.attr] = if_.value;
						else delete f[if_.attr];

					}
				}

				if(!val) {
					if(f['default']) val = f['default'];
					if(f.required) return this.cast('ALERT', [form, name, 'isnull']) && false;
					else continue;
				}

				min  = parseInt(f.minlength) || 0;
				max  = parseInt(f.maxlength) || 0;
				minb = /b$/.test(f.minlength||'');
				maxb = /b$/.test(f.maxlength||'');
				len  = val.length;
				if(minb || maxb) lenb = get_bytes(val);
				if((min && min > (minb?lenb:len)) || (max && max < (maxb?lenb:len))) {
					return this.cast('ALERT', [form, name, 'outofrange', min, max]) && false;
				}

				if(f.equalto) {
					e_el  = elems[f.equalto];
					e_val = e_el?$.trim(get_value($(e_el))):'';
					if(e_el && e_val !== val) {
						return this.cast('ALERT', [form, name, 'equalto']) && false;
					}
				}

				rules = (f.rule || '').split(',');
				for(i=0,c=rules.length; i < c; i++) {
					if(!(r = rules[i])) continue;

					result = this.cast('APPLY_RULE', [r, val]);
					if(mod.indexOf('not,') > -1) result = !result;
					if(!result) {
						return this.cast('ALERT', [form, name, 'invalid_'+r]) && false;
					}
				}
			}

			if($.isFunction(callback)) return callback(form);

			return true;
		},
		API_ADD_RULE : function(sender, params) {
			var name = params[0].toLowerCase();
			rules[name] = params[1];
		},
		API_DEL_RULE : function(sender, params) {
			var name = params[0].toLowerCase();
			delete rules[name];
		},
		API_GET_RULE : function(sender, params) {
			var name = params[0].toLowerCase();

			if (rules[name]) {
				return rules[name];
			} else {
				return null;
			}
		},
		API_ADD_FILTER : function(sender, params) {
			var name   = params[0].toLowerCase();
			var filter = params[1];

			filters[name] = filter;
		},
		API_DEL_FILTER : function(sender, params) {
			var name = params[0].toLowerCase();
			delete filters[name];
		},
		API_GET_FILTER : function(sender, params) {
			var name = params[0].toLowerCase();

			if (filters[name]) {
				return filters[name];
			} else {
				return null;
			}
		},
		API_ADD_EXTRA_FIELD : function(sender, params) {
			var name = params[0].toLowerCase();
			var prop = params[1];

			extras[name] = prop;
		},
		API_GET_EXTRA_FIELD : function(sender, params) {
			var name = params[0].toLowerCase();
			return extras[name];
		},
		API_DEL_EXTRA_FIELD : function(sender, params) {
			var name = params[0].toLowerCase();
			delete extras[name];
		},
		API_APPLY_RULE : function(sender, params) {
			var name  = params[0];
			var value = params[1];

			if(typeof(rules[name]) == 'undefined') return true; // no filter
			if($.isFunction(rules[name])) return rules[name](value);
			if(rules[name] instanceof RegExp) return rules[name].test(value);
			if($.isArray(rules[name])) return ($.inArray(value, rules[name]) > -1);

			return true;
		},
		API_ALERT : function(sender, params) {
			var form = params[0];
			var field_name = params[1];
			var msg_code = params[2];
			var minlen   = params[3];
			var maxlen   = params[4];

			var field_msg = this.cast('GET_MESSAGE', [field_name]);
			var msg = this.cast('GET_MESSAGE', [msg_code]);

			if (msg != msg_code) msg = (msg.indexOf('%s')<0)?(field_msg+msg):(msg.replace('%s',field_msg));
			if (minlen||maxlen) msg +=  '('+(minlen||'')+'~'+(maxlen||'')+')';

			this.cast('SHOW_ALERT', [msg]);

			// set focus
			$(form.elements[field_name]).focus();
		},
		API_SHOW_ALERT : function(sender, params) {
			alert(params[0]);
		},
		API_ADD_MESSAGE : function(sender, params) {
			var msg_code = params[0];
			var msg_str  = params[1];

			messages[msg_code] = msg_str;
		},
		API_GET_MESSAGE : function(sender, params) {
			var msg_code = params[0];

			return messages[msg_code] || msg_code;
		},
		API_ADD_CALLBACK : function(sender, params) {
			var name = params[0];
			var func = params[1];

			callbacks[name] = func;
		},
		API_REMOVE_CALLBACK : function(sender, params) {
			var name = params[0];

			delete callbacks[name];
		}
	});

	var oValidator = new Validator();

	// register validator
	xe.registerApp(oValidator);

	// 호환성을 위해 추가한 플러그인 - 에디터에서 컨텐트를 가져와서 설정한다.
	var EditorStub = xe.createPlugin('editor_stub', {
		API_BEFORE_VALIDATE : function(sender, params) {
			var form = params[0];
			var seq  = form.getAttribute('editor_sequence');

			// bug fix for IE6,7
			if (seq && typeof seq == 'object') seq = seq.value;

			if (seq) {
				try {
					editorRelKeys[seq].content.value = editorRelKeys[seq].func(seq) || '';
				} catch(e) { }
			}
		}
	});
	oValidator.registerPlugin(new EditorStub());

	// functions
	function get_value($elem) {
		var vals = [];
		if ($elem.is(':radio')){
			return $elem.filter(':checked').val();
		} else if ($elem.is(':checkbox')) {
			$elem.filter(':checked').each(function(){
				vals.push(this.value);
			});
			return vals.join('|@|');
		} else {
			return $elem.val();
		}
	}

	function get_bytes(str) {
		str += '';
		if(!str.length) return 0;

		str = encodeURI(str);
		var c = str.split('%').length - 1;

		return str.length - c*2;
	}

})(jQuery);

/**
 * @function filterAlertMessage
 * @brief ajax로 서버에 요청후 결과를 처리할 callback_function을 지정하지 않았을 시 호출되는 기본 함수
 **/
function filterAlertMessage(ret_obj) {
	var error = ret_obj.error;
	var message = ret_obj.message;
	var act = ret_obj.act;
	var redirect_url = ret_obj.redirect_url;
	var url = location.href;

	if(typeof(message) != "undefined" && message && message != "success") alert(message);

	if(typeof(act)!="undefined" && act) url = current_url.setQuery("act", act);
	else if(typeof(redirect_url) != "undefined" && redirect_url) url = redirect_url;

	if(url == location.href) url = url.replace(/#(.*)$/,'');

	location.href = url;
}

/**
 * @brief Function to process filters
 * @deprecated
 */
function procFilter(form, filter_func) {
	filter_func(form);
	return false;
}

function legacy_filter(filter_name, form, module, act, callback, responses, confirm_msg, rename_params) {
	var v = xe.getApp('Validator')[0], $ = jQuery, args = [];

	if (!v) return false;

	if (!form.elements._filter) $(form).prepend('<input type="hidden" name="_filter" />');
	form.elements._filter.value = filter_name;

	args[0] = filter_name;
	args[1] = function(f) {
		var params = {}, res = [], elms = f.elements, data = $(f).serializeArray();
		$.each(data, function(i, field) {
			var v = $.trim(field.value), n = field.name;
			if(!v || !n) return true;
			if(rename_params[n]) n = rename_params[n];

			if(/\[\]$/.test(n)) n = n.replace(/\[\]$/, '');
			if(params[n]) {
				params[n] += '|@|'+v;
			} else {
				params[n] = field.value;
			}
		});

		if (confirm_msg && !confirm(confirm_msg)) return false;

		exec_xml(module, act, params, callback, responses, params, form);
	};

	v.cast('ADD_CALLBACK', args);
	v.cast('VALIDATE', [form, filter_name]);

	return false;
}
