;(function ( $ ) {

	$.fn.smk_Accordion = function( options ) {
		
		if (this.length > 1){
			this.each(function() { 
				$(this).smk_Accordion(options);
			});
			return this;
		}
		
		// Defaults
		var settings = $.extend({
			animation:  true,
			showIcon:   true,
			closeAble:  false,
			closeOther: true,
			slideSpeed: 350,
			activeIndex: false
		}, options );

		if( $(this).data('close-able') )    settings.closeAble = $(this).data('close-able');
		if( $(this).data('animation') )     settings.animation = $(this).data('animation');
		if( $(this).data('show-icon') )     settings.showIcon = $(this).data('show-icon');
		if( $(this).data('close-other') )   settings.closeOther = $(this).data('close-other');
		if( $(this).data('slide-speed') )   settings.slideSpeed = $(this).data('slide-speed');
		if( $(this).data('active-index') )  settings.activeIndex = $(this).data('active-index');

		// Cache current instance
		// To avoid scope issues, use 'plugin' instead of 'this'
		// to reference this class from internal events and functions.
		var plugin = this;

		//"Constructor"
		var init = function() {
			plugin.createStructure();
			plugin.clickHead();
		}

		// Add .smk_accordion class
		this.createStructure = function() {

			//Add Class
			plugin.addClass('smk_accordion');
			if( settings.showIcon ){
				plugin.addClass('acc_with_icon');
			}

			//Create sections if they were not created already
			if( plugin.find('.accordion_in').length < 1 ){
				plugin.children().addClass('accordion_in');
			}

			//Add classes to accordion head and content for each section
			plugin.find('.accordion_in').each(function(index, elem){
				var childs = $(elem).children();
				$(childs[0]).addClass('acc_head');
				$(childs[1]).addClass('acc_content');
			});
			
			//Append icon
			if( settings.showIcon ){
				plugin.find('.acc_head').prepend('<div class="acc_icon_expand"></div>');
			}

			//Hide inactive
			plugin.find('.accordion_in .acc_content').not('.acc_active .acc_content').hide();

			//Active index
			if( settings.activeIndex === parseInt(settings.activeIndex) ){
				if(settings.activeIndex === 0){
					plugin.find('.accordion_in').addClass('acc_active').show();
					plugin.find('.accordion_in .acc_content').addClass('acc_active').show();
				}
				else{
					plugin.find('.accordion_in').eq(settings.activeIndex - 1).addClass('acc_active').show();
					plugin.find('.accordion_in .acc_content').eq(settings.activeIndex - 1).addClass('acc_active').show();
				}
			}
			
		}

		// Action when the user click accordion head
		this.clickHead = function() {

			plugin.on('click', '.acc_head', function(){
				
				var s_parent = $(this).parent();
				
				if( s_parent.hasClass('acc_active') == false ){
					if( settings.closeOther ){
						plugin.find('.acc_content').slideUp(settings.slideSpeed);
						plugin.find('.accordion_in').removeClass('acc_active');
					}	
				}

				if( s_parent.hasClass('acc_active') ){
					if( false !== settings.closeAble ){
						s_parent.children('.acc_content').slideUp(settings.slideSpeed);
						s_parent.removeClass('acc_active');
					}
				}
				else{
					$(this).next('.acc_content').slideDown(settings.slideSpeed);
					s_parent.addClass('acc_active');
				}

			});

		}

		//"Constructor" init
		init();
		return this;

	};


}( jQuery ));