/*
* author: rodrigo ludgero http://rodrigoludgero.com/
*
* twitter: @rodrigoludgero
*
* description: a jquery accordion plugin
*
* license: mit licensed
*
* project: jquery rlaccordion plugin https://github.com/rodrigo-ludgero
*/

(function( $ ) {

	$.fn.rlaccordion = function(method, options) {
		var settings = $.extend({
			rlaccordion: "rlaccordion", 		// add class in the same level of a parent statement for avoid styles conflict
			signtag: "<span></span>", 			// html tag parent signs
			titles: "h3",			 							// html tag parent of minus and plus, this may replaced also for a class
			titleschild: "span",						// html child titles and parent signs
			container: "div",								// html tag adjacent sibling of titles
			childnum: 0,										// number of the children start open
			classopen: "opened",						// add class to the titles option adjacent sibling
			open: "&#x2b;",  								// unicode plus sign
			close: "&#x2212;",							// unicode minus sign
			rlopen: "rl-open", 							// class for a plus sign
			rlclose: "rl-close" 						// class for a minus sign
		}, options);

		var $element = $(this).children(settings.titles); 		// limit the scope
		var $symbols = $(settings.signtag); 									// create a html tag
		var $signopen = $symbols.html(settings.open); 				// insert a unicode open sign into the parent
		var $signclose = $symbols.html(settings.close); 			// insert a unicode close sign into the parent
		var $insertelement = $symbols.appendto($element); 		// insert symbols signs into titles settings

		// add class in the same level of a parent statement for avoid styles conflict
		$element.parent().addclass(settings.rlaccordion);

		// parse code to assign the corresponding unicode and class
		if ( $element.next().hasclass(settings.classopen) ) {
			$element.children().html(settings.close).addclass(settings.rlclose);
		}
		else {
			$element.children().html(settings.open).addclass(settings.rlopen);
		}

		var methods = {
			init : function() { // defaults settings
				return this.each(function() {

					$(this).find(settings.container).eq(settings.childnum).addclass(settings.classopen).slidedown()
								 .prev().children().html(settings.close).removeclass(settings.rlopen).addclass(settings.rlclose); // assign the children start open

					$element.on('click', function() {
						$(this).parent().find(settings.container).removeclass(settings.classopen).slideup();
						$(this).parent().find(settings.titles).children().html(settings.open);
						$(this).next().addclass(settings.classopen).slidedown();

						if ( $(this).children().hasclass(settings.rlclose) ) {
								 $(this).next().stop();
						}

						if ( $(this).next().hasclass(settings.classopen) ) {
								 $(this).parent().find(settings.titleschild).removeclass(settings.rlclose).addclass(settings.rlopen);
								 $(this).children().html(settings.close).removeclass(settings.rlopen).addclass(settings.rlclose);
						}
						else {
							$(this).children().html(settings.open).removeclass(settings.rlclose).addclass(settings.rlopen);
						}
					});
				});
			},

			single : function() {
				return this.each(function() {

					$(this).find(settings.container).eq(settings.childnum).addclass(settings.classopen).slidedown()
								 .prev().children().html(settings.close).removeclass(settings.rlopen).addclass(settings.rlclose); // assign the children start open

					$element.on('click', function() {
						$(this).next().slidetoggle().toggleclass(settings.classopen);
						if ($(this).next().hasclass(settings.classopen)) {
								$(this).children().html(settings.close).removeclass(settings.rlopen).addclass(settings.rlclose);
						}
						else {
							$(this).children().html(settings.open).removeclass(settings.rlclose).addclass(settings.rlopen);
						}
					});
				});
			},

			mix : function() {
				return this.each(function() {

					$(this).find(settings.container).eq(settings.childnum).addclass(settings.classopen).slidedown()
								 .prev().children().html(settings.close).removeclass(settings.rlopen).addclass(settings.rlclose); // assign the children start open

					$element.on('click', function() {
						if ( $(this).next().hasclass(settings.classopen) ) {
								 $(this).parent().find(settings.container).removeclass(settings.classopen).slideup();
								 $(this).parent().find(settings.titles).children().html(settings.open).removeclass(settings.rlclose).addclass(settings.rlopen);
								 $(this).children().html(settings.open);
						}
						else {
							$(this).parent().find(settings.container).removeclass(settings.classopen).slideup();
							$(this).next().addclass(settings.classopen).slidedown();
							$(this).parent().find(settings.titles).children().html(settings.open).removeclass(settings.rlclose).addclass(settings.rlopen);
							$(this).children().html(settings.close).removeclass(settings.rlopen).addclass(settings.rlclose);
						}
					});
				});
			}
		};

		// method calling logic
		if ( methods[method] ) {
			return methods[ method ].apply( this, array.prototype.slice.call( arguments, 1 ));
		} else if ( typeof method === 'object' || ! method ) {
			return methods.init.apply( this, arguments );
		} else {
			$.error( 'method ' +  method + ' does not exist on jquery.rlaccordion ' );
		}
	};

})( jquery );