/*********************************************
 * chatbot.js
 * -------------------------------------------
 * @init
 * @plugin
*********************************************/
var u = new EPOS_CARD.Util();

/* -------------------------------------------
 * @init
------------------------------------------- */
$(function(){
	$.chatbot();
});

/* -------------------------------------------
 * @plugin
------------------------------------------- */
(function($){
	
	/* 
	 * chatbot
	 */
	$.chatbot = function(){
		//var
		var $elm = $("#chatbotBtn"),
			$toggleBtn = $(".js-chatbot-toggle_button", $elm),
			$toggleImg = $(".js-chatbot-toggle_image", $elm),
			$elmShowPosition = $(".js-chatbot-show_position"),
			imageFileName = $toggleImg.attr('src'),
			showPosition = 0,
			speed= 300;
		
		if($elm.length === 0){return false}
		
		//function
		var preloadImg = function(){
			for(var i=0; i<arguments.length; i++){
				$('<img>').attr('src', arguments[i]);
			}
		};
		
		//画像切り替え
		if($toggleBtn.length !== 0 ){
			//init
			imageFileName = imageFileName.replace(/(.+?)_on\.(.+)/, '$1_off.$2')
			preloadImg(imageFileName);
			
			//trigger
			$toggleBtn.on('click', function(){
				$toggleImg.attr('src', imageFileName);
				$(this).hide();
			});
		}
		
		
		//表示位置
		if($elmShowPosition.length !== 0){
			//int
			showPosition = $elmShowPosition.offset().top;
			if(showPosition < $(window).scrollTop()){
				$elm.show();
			}else{
				$elm.hide();
			}
			//trigger
			$(window).on('scroll', function(){
				if(showPosition < $(window).scrollTop()){
					$elm.fadeIn(speed);
				}else{
					$elm.fadeOut(speed);
				}
			});
			u.isWindowSizeCheck(function(){
				showPosition = $elmShowPosition.offset().top;
			});
		}
		
	}
	
})(jQuery);