jQuery(function($){

	var getAttribute = function(attr_name){

		if(jcaa_attrs === null){
			return false;
		}

		for(var i = 0; i < jcaa_attrs.length; i++){

			var attr = jcaa_attrs[i];
			if(attr.name === attr_name){
				return attr;
			}
		}

		return false;
	};

	var getAttributeOption = function(attr, option){

		for( var i = 0; i < attr.options.length; i++){

			var attr_option = attr.options[i];
			if(attr_option.value === option){
				return attr_option;
			}
		}

		return false;
	};

	var active_class = 'jcaa_active_attr';
	var disable_class = 'jcass_attr_disable';
	var disable_li_class = 'jcass_attr_disabled';
	var out_of_stock_class = 'jcaa_no_stock';

	// check to see if it is enabled
	var product_variations = $('.variations_form.cart').data('product_variations');
	var visible_attrs = {};
	if(product_variations != undefined && product_variations.length > 0){
		for(var index in product_variations){
			var row = product_variations[index];

			if(row['variation_is_visible'] == false && row['variation_is_active'] == false && row['is_purchasable'] == false){
				continue;
			}

			for(var attr_key in row['attributes']){
				var attr_val =  row['attributes'][attr_key];

				if(visible_attrs[attr_key] == undefined){
					visible_attrs[attr_key] = [];
				}

				if( $.inArray(attr_val, visible_attrs[attr_key]) == -1 ){
					visible_attrs[attr_key].push(attr_val);
				}
			}
		}
	}

	// generate HTML output
	$( 'select[name^="attribute_pa_"]').each(function(){

		var _select = $(this);
		var _name = $(this).attr('name').substr(10);
		var _attr = getAttribute(_name);
		
		// if attr exists in array and is not set to default output
		if(_attr !== false && _attr.type !== 'default'){

			if(_attr.label === 'hide'){
				_select.parents('tr').find('.label').css('visibility', 'hidden');
			}

			var classes = ''

			// style
			if(_attr.style === 'rounded' && _attr.type !== 'text'){
				classes += 'jcaa_rounded_corners';
			}

			// size, defaults to small
			if( _attr.size === 'large' ){
				classes += ' jcaa_size_large';
			}else if( _attr.size === 'medium' ){
				classes += ' jcaa_size_medium';
			}else{
				classes += ' jcaa_size_small';
			}

			var htmlOutput = '';

			htmlOutput += '<ul id="jcaa_attr_'+_name+'" class="jcaa_attr_select jcaa_attr_variable_select '+classes+'">';

			_select.find('option').each(function(){

				if( visible_attrs['attribute_' + _attr['name'] ] != undefined ){
					var check_attr = visible_attrs['attribute_' + _attr['name'] ];
					if( $.inArray("", check_attr) > -1 || $.inArray($(this).val(), check_attr) > -1 ){

						// output option if attribute is visible

						var _option = getAttributeOption(_attr, $(this).val());
						if(_option !== false){

							if(_attr.type === 'image'){
								htmlOutput += '<li><img src="'+_option.img+'" alt="'+_option.alt+'" title="'+_option.name+'" data-target="#'+_select.attr('id')+'" data-value="'+_option.value+'" class="jcaa_attr_option jcaa_obj_image" /></li>';	
							}else if(_attr.type === 'color'){
								htmlOutput += '<li><div style="background: '+_option.color+';" data-target="#'+_select.attr('id')+'" title="'+_option.name+'" data-value="'+_option.value+'" class="jcaa_attr_option jcaa_obj_color"></div></li>';	
							}else if(_attr.type === 'text'){
								htmlOutput += '<li><a data-target="#'+_select.attr('id')+'" data-value="'+_option.value+'" title="'+_option.name+'" class="jcaa_attr_option jcaa_obj_text">'+_option.name+'</a></li>';
							}
						}
					}
				}			
			});

			htmlOutput += '</ul>';

			var _value_wrapper = _select.parents('.value');
			if(_value_wrapper){
				_value_wrapper.addClass('jcaa_select_enabled')
			}

			_select.after(htmlOutput);
			_select.hide();
		}
	});

	// process clicks
	$('.variations_form.cart .jcaa_attr_select').each(function(){

		var _attr_list = $(this);
		// var active_class = 'jcaa_active_attr';

		_attr_list.find('.jcaa_attr_option').each(function(){

			var _attr_option = $(this);
			_attr_option.click(function(event){

				// dont process it
				if($(this).hasClass(disable_class)){
					return event.preventDefault();
				}

				var _target = _attr_option.data('target');
				_target = _target.substr(1);
				_target = '[id="'+_target+'"]';

				var _select_target = $(_target);
				var _select_value = _attr_option.data('value');

				// trigger touch
				//$(_select_target).trigger('touchstart');
				
				if($(_select_target).find('option[value="'+_select_value+'"]').prop("selected") == true){

					if(jcaa['enable_attr_toggle'] == 'yes') {
						// reset select with default choice
						$(_select_target).find('option').attr("selected", false);
						$(_select_target).find('option:first').attr("selected", true);
					}

				}else{

					// update select with choice
					$(_select_target).find('option').attr("selected", false);
					$(_select_target).val(_select_value);
					$(_select_target).find('option[value="'+_select_value+'"]').attr("selected", true);
					
				}

				// trigger change
				$(_select_target).trigger('change');

				event.preventDefault();
			});
		});

	});

	var wc_variation_form_matcher = {
		find_matching_variations: function( product_variations, settings ) {
			var matching = [];
			if(product_variations != undefined) {
                for (var i = 0; i < product_variations.length; i++) {
                    var variation = product_variations[i];

                    if (wc_variation_form_matcher.variations_match(variation.attributes, settings)) {
                        matching.push(variation);
                    }
                }
            }
			return matching;
		},
		variations_match: function( attrs1, attrs2 ) {
			var match = true;
			for ( var attr_name in attrs1 ) {
				if ( attrs1.hasOwnProperty( attr_name ) ) {
					var val1 = attrs1[ attr_name ];
					var val2 = attrs2[ attr_name ];
					if ( val1 !== undefined && val2 !== undefined && val1.length !== 0 && val2.length !== 0 && val1 !== val2 ) {
						match = false;
					}
				}
			}
			return match;
		}
	};

	/**
	 * Set active state for selector on select change
	 */
	$.fn.jcaaCheckAttrValidation = function(){

		// disable options which are not in stock
		var product_variations = $('.variations_form.cart').data('product_variations');
		var active_attrs = [];
		var found = false;
		var hasEmptyAttr = false;
		var active_count = 0;
		var attr_count = 0;

		$('.variations select').each(function(){

			if($(this).val() !== ''){
				active_count++;
				found = $(this).attr('name');
			}else{
				hasEmptyAttr = true;
			}
			active_attrs[$(this).attr('name')] = $(this).val();
			attr_count++;
			// }
		});

		//if(!found){
		//	return false;
		//}

		// clear out of stock
		$('.jcaa_attr_option').removeClass(disable_class);
		$('.jcaa_attr_variable_select li').removeClass(out_of_stock_class + ' ' + disable_li_class);

		/**
		 * Loop through each row and check for all other rows variations which match and see if they are in stock
		 * Todo: When combined with default attribute dropdown, dropdown attributes dont disable, meaning you can still select an out of stock attribute
		 * Todo: Clear console logs
		 */
		var matching_vars = [];
		var out_of_stock = [];
		var stock_levels = {};

		var set_in_stock = function(attributes){

			for(var attr_name in attributes){

				if(stock_levels[attr_name] !== undefined && stock_levels[attr_name] == true){
					continue;
				}

				var attr_val = attributes[attr_name];
				if(attr_val === ""){
					stock_levels[attr_name] = true;
				}else{
					if(stock_levels[attr_name] === undefined) {
						stock_levels[attr_name] = [];
					}

					if(stock_levels[attr_name].indexOf(attr_val) === -1) {
						stock_levels[attr_name].push(attr_val);
					}
				}
			}
		};

		var is_in_stock = function(attribute_name, attribute_val, forced){

			if(stock_levels[attribute_name] !== undefined){

				if(stock_levels[attribute_name] === true){
					return true;
				}

				if(stock_levels[attribute_name] !== false){

					if(stock_levels[attribute_name].indexOf(attribute_val) !== -1){
						return true;
					}
				}
			}

			return false;
		};

		// attr_count = 3, count_check = 2, active_count = 1


		var count_check = ( (attr_count - 1) > 1 ) ? (attr_count - 1) : 1;
		//count_check = 0;

		var enabled_options = {};

		if(active_count > 0) {

			for (var attr_name in active_attrs) {

				var attr_row = [];
				//var attr = active_attrs[attr_name];

				for (var attr_key in active_attrs) {

					if (attr_name == attr_key) {
						attr_row[attr_key] = "";
					} else {
						attr_row[attr_key] = active_attrs[attr_key];
					}
				}

				// matching_vars = $.fn.wc_variation_form.find_matching_variations(product_variations, attr_row);
				matching_vars = wc_variation_form_matcher.find_matching_variations(product_variations, attr_row);				

				if (matching_vars.length == 0) {
					continue;
				}

				for (var i = 0; i < matching_vars.length; i++) {

					var variation = matching_vars[i];
					if (variation.is_in_stock === false) {
						out_of_stock.push({
							attribute: attr_name,
							value: variation.attributes[attr_name],
							force: false
						});
					} else {
						set_in_stock(variation.attributes);

						// set if enabled 
						if(enabled_options[attr_name] == undefined){
							enabled_options[attr_name] = [];
						}

						if(enabled_options[attr_name] != '*'){

							if(variation.attributes[attr_name] == ""){
								
								// can choose any
								if(enabled_options[attr_name] == undefined){
									enabled_options[attr_name] = "*";
								}else{
									enabled_options[attr_name] = "*";
								}
								
							}else if(enabled_options[attr_name].indexOf(variation.attributes[attr_name]) === -1){

								enabled_options[attr_name].push(variation.attributes[attr_name]);
							}
						}
					}
				}
			}
		}

		// apply enabled options
		for(var attr_k in enabled_options){

			var enabled_attr = enabled_options[attr_k];
			var attr_n = attr_k.substr(10);

			var _jcaa_elem = $('[id="jcaa_attr_'+attr_n+'"]');

			if(enabled_attr != '*'){

				_jcaa_elem.find('.jcaa_attr_option').addClass(disable_class).parent().addClass(disable_li_class);

				for(var i = 0; i < enabled_attr.length; i++){

					var specific_attr = enabled_attr[i];
					_jcaa_elem.find('.jcaa_attr_option[data-value="' + specific_attr  + '"]').removeClass(disable_class).parent().removeClass(disable_li_class);
				}
			}
		}


		/**
		 * Disable out of stock attributes on load
		 */

		if(active_count < attr_count ){

			// matching_vars = $.fn.wc_variation_form.find_matching_variations(product_variations, active_attrs);
			matching_vars = wc_variation_form_matcher.find_matching_variations(product_variations, active_attrs);

			var set_force = false;
			if(active_count == attr_count - 1){
				set_force = true;
			}

			if (matching_vars.length > 0) {

				for (var i = 0; i < matching_vars.length; i++) {

					var variation = matching_vars[i];
					if (variation.is_in_stock === false) {
						var attr_name = found;

						for(var test_a in variation.attributes ){

							if( variation.attributes[test_a] !== "" && variation.attributes[test_a] !== found  ){
								out_of_stock.push({
									attribute: test_a,
									value: variation.attributes[test_a],
									force: set_force
								});
							}
						}

					} else {
						set_in_stock(variation.attributes, true);
					}
				}
			}
		}

        var already_checked = {};

		if(out_of_stock.length > 0){
			for(var i = 0; i < out_of_stock.length; i++){

				var attr_k = out_of_stock[i].attribute;
				var attr_v = out_of_stock[i].value;

                if(already_checked[attr_k] === undefined){
                    already_checked[attr_k] = {};
                }

				if(is_in_stock(attr_k, attr_v) === true  && out_of_stock[i].force !== true){
                    if(already_checked[attr_k][attr_v] === undefined){
                        already_checked[attr_k][attr_v] = true;
                    }
					continue;
				}

				if( out_of_stock[i].force === true && active_attrs[attr_k] !== "" ){
                    if(already_checked[attr_k][attr_v] === undefined){
                        already_checked[attr_k][attr_v] = true;
                    }
					continue;
				}

                if(already_checked[attr_k][attr_v] !== undefined){
                    continue;
                }

				var attr_n = attr_k.substr(10);
				var _jcaa_elem = $('[id="jcaa_attr_'+attr_n+'"]');
				_jcaa_elem.find('.jcaa_attr_option[data-value="' + attr_v  + '"]').addClass(disable_class).parent().addClass(out_of_stock_class + ' ' + disable_li_class);
			}
		}
	};

	$('body').on( 'change', '.variations select', function( ) {

		var _name = $(this).attr('name').substr(10);
		$('ul[id="jcaa_attr_'+_name+'"] .' + active_class).removeClass(active_class);
		$('ul[id="jcaa_attr_'+_name+'"] [data-value="' + $(this).val() + '"]').parent().addClass(active_class);

		// enable custom validation
		if(jcaa['enable_validation'] !== undefined && jcaa['enable_validation'] == 'yes'){
			$.fn.jcaaCheckAttrValidation();
		}
	});

	// force initial selection added v1.4.1
	$('.variations select').trigger('change');
});