(function($){
  	/* 回到購買處 */
  	$('.gobuy').on('click',function(){
  		var tol = $(window).height();
  		console.log(tol);
  		var buy = $('.button-line').offset().top-tol+50 ;
  	    $("html,body").scrollTop(buy);
  	});
	/*為JQ添加naturalWidth()和naturalHeight()方法，抓取圖片原始尺寸*/
    var
    props = ['Width', 'Height'],
    prop;

    while (prop = props.pop()) {
    (function (natural, prop) {
      $.fn[natural] = (natural in new Image()) ?
      function () {
      return this[0][natural];
      } :
      function () {
      var
      node = this[0],
      img,
      value;

      if (node.tagName.toLowerCase() === 'img') {
        img = new Image();
        img.src = node.src,
        value = img[prop];
      }
      return value;
      };
    }('natural' + prop, prop.toLowerCase()));
    }

	/*評論預覽商品圖*/
	$(".pic-box").on("click",".pic-over",function(){
		var _this = $(this),
			pic_src = _this.find("img").attr('src');
		_this.parents(".pic-box").find(".click").removeClass("click");
		_this.addClass("click");
		_this.parents(".pic-box").find(".pic-viewer").addClass("click")
		.find('img').attr({src: pic_src});
	});
	$('.pic-box').on('click', '.close', function(event) {
		var _this = $(this).parents(".pic-box");
		_this.find(".pic-viewer").removeClass("click");
		_this.find(".click").removeClass("click");
	});

	/*上方banner廣告圖*/
	$(".top_productbox").owlCarousel({
		loop : false,
		responsive:{
			0:{
				items : 2
			},
			320:{
				items : 3
			},
			480:{
				items : 6
			},
			660:{
				items : 8
			},
			768:{
				items : 9
			},
			1023:{
				items : 10
			}
		},
		nav : true,

	});
    $('#preview').css('display','none');

	$("article .recommend_l,article .history_l,article .other_l").owlCarousel({
		nav : true,
		responsive:{
			0:{
				items : 2
			},
			480:{
				items : 3
			},
			768:{
				items : 4
			},
			1024:{
				items : 5
			}
		},
	});

	var _window = $(window);
    var change = 0;
    var change_1023 = 0;
    var moreview = false;
    var imgviewbox = $('.imgviewbox');

	if(_window.width() > 769 && change != 960 ){
        change = 960;
        moreview = true;

		smallPicBox();
        zoonbox();
		videoBox();
    }else if(_window.width() <= 768 && change!= 768){
        change = 768;
        var sid = $(".add_to_cart,.add_to_cart_pop,.informButton").attr("sid");
        if(!sid){
        	sid = $(".addButton").attr('sid');
        }
 		$.get('/products/ajax/detail/productView_moblie.php',{sid:sid}, function(data,status){
			$('.productView').html(data)
			$('.productImg').owlCarousel({
		         loop : false,
		        items : 1,
		        nav : true,
		    });
			$('.productImg').on('changed.owl.carousel',function(e){
				var num  = e.item.index;
				if(document.getElementById("Video")){
					if($(".productView").find(".owl-item").eq(num).find("#Video").attr("style")){
						$("#big_picture").hide();
						document.getElementById("Video").play();
					}else{

						$("#big_picture").show();
						document.getElementById("Video").pause();
					}
				}
			});
		});
		// imgviewbox.css('display','block');
		$('.item-1').on('click','img', function(event) {
			var html ='<img src="'+$(this).attr('src')+'">' ;
			imgviewbox.append(html).css('display','block');
		});
		imgviewbox.on('click','.close', function(event) {
			imgviewbox.css('display','none').find('img').remove();
		});
    };

	if(_window.width() <= 1023 && change_1023 != 1023){
        change_1023 = 1023;
    }else if(_window.width() > 1023 && change_1023 != 1200){
    	change_1023 = 1200;
    }

    $('article').on('click','.open-preview',function(){
    	var nowitem = $('.productImg .active').prevAll('.owl-item').length;

    	$('article .previewbox').css('display','block')
		.find('img').eq(nowitem).css('display','block');
    });
    $('article').on('click','.close',function(){
    	$('article .previewbox').removeAttr('style')
		.find('img').removeAttr('style');
    });
    _window.on('resize',function(){
        if(_window.width() <= 1023 && change_1023 != 1023){
	        change_1023 = 1023;
	    }else if(_window.width() > 1023 && change_1023 != 1200){
	    	change_1023 = 1200;
	    }
        if( _window.width() > 768 && change != 960){
 			 change = 960;
            $('.productView .moreview').removeAttr('style');
			$.get('/products/ajax/detail/productView_pc.php',{sid:$(".add_to_cart,.add_to_cart_pop,.informButton").attr("sid")}, function(data,status){
				$('.productView').html(data);
		        smallPicBox();
            	zoonbox();
				videoBox();
			});
			$('.item-1').off('click','img');
			imgviewbox.off('click','.close');
        }else if(_window.width() <= 768 && change != 768){
            change = 768;
	        var sid = $(".add_to_cart,.add_to_cart_pop,.informButton").attr("sid");
	        if(!sid){
	        	sid = $(".addButton").attr('sid');
	        }
	        $.get('/products/ajax/detail/productView_moblie.php',{sid:sid}, function(data,status){
				$('.productView').html(data)
				$('.productImg').owlCarousel({
			        loop : false,
			        items : 1,
			        nav : true,
			    });
				$('.productImg').on('changed.owl.carousel',function(e){
					var num  = e.item.index;

					if(document.getElementById("Video")){
						if($(".productView").find(".owl-item").eq(num).find("#Video").attr("style")){
							$("#big_picture").hide();
							document.getElementById("Video").play();
						}else{
							$("#big_picture").show();
							document.getElementById("Video").pause();
						}
					}
				});
			});
			// imgviewbox.css('display','block');
			$('.item-1').on('click','img', function(event) {
				var html ='<img src="'+$(this).attr('src')+'">' ;
				imgviewbox.append(html).css('display','block');
			});
			imgviewbox.on('click','.close', function(event) {
				imgviewbox.css('display','none').find('img').remove();
			});
        };
    });

    function smallPicBox(){
		 /* 小圖hover效果及切換功能 */
        $(".productView .moreview")
        .owlCarousel({
 			loop:false,
			items : 5,
			nav : true,
		})
		.on('mouseleave','.owl-stage-outer', function() {
			$(".productView .zoonbox").removeAttr('style');
		})
		.on('click','.owl-item', function() {
			var now = $(this).index();
			$(".productView .owl-item").not(this).find('.picitem').removeClass('now');
			$(this).find('.picitem').addClass('now');
			$(".productView .zoonbox").removeClass('now').eq(now).addClass('now');
			})
		.on('mouseenter','.owl-item', function() {
			var now = $(this).index();
			//var nowbox = $('.productImg .now').index();
			//console.log(nowbox );
			$(".productView .zoonbox").css('display','none').eq(now).css('display','block');
			 	//$('.productImg .now').css('display','none');
		})
		.on('mouseleave','.owl-item', function() {
			var now = $(this).index();
			$(".productView .zoonbox").eq(now).css('display','none');
		});
    }
     	/* 放大鏡效果 */
	 function zoonbox(){
		var ImgBox,ImgBox_h,ImgBox_w,viewbox,viewbox_h,viewbox_w,viewbox_b,viewbox_r,preview,preview_img,scale_h,scale_w;
			// preview_str= '<div class="preview">';
		$('.productView').off('mouseenter mousemove mouseleave','.picbox');
		$('.productView').on('mouseenter','.picbox',function(){
			ImgBox=$('.productImg .now').offset();
			var preview_str= '<div class="preview">';
			var zoonbox_now = $(this).parents('.zoonbox'),
			big_pic = zoonbox_now.attr('big-pic');
			var _this = $(this);
				viewbox = _this.find('.viewbox');
		   var image = new Image();
		    image.src = "/upload_files/fonlego-rwd/prodpic/"+big_pic;
		    image.onload = function() {
		    	ImgBox_h = image.height;
		    	ImgBox_w = image.width;
		    	scale_h = _this.height()/ImgBox_h;
		    	scale_w = _this.width()/ImgBox_w;
				viewbox_h = _this.height()*(scale_h);
				viewbox_w = _this.width()*(scale_w);
				viewbox_b = _this.height()-viewbox_h;
				viewbox_r = _this.width()-viewbox_w;

				viewbox.css({
					'opacity':1,
					'height':viewbox_h,
					'width':viewbox_w,
				});
				preview_str += '<img src="/upload_files/fonlego-rwd/prodpic/'+big_pic+'" style="max-width:none;max-height:none;max-width:initial;width:auto;width:'+ImgBox_w+'px;" ></div>';
				zoonbox_now.append(preview_str);
				// console.log(preview_str);
				preview = zoonbox_now.find('.preview');
				preview_img = preview.find('img');
			}
		})
		.on('mousemove','.picbox',function(e){
			if(ImgBox.top){
				var bigpicTop = e.pageY-ImgBox.top,
					bigpicLeft = e.pageX-ImgBox.left;
				if(bigpicTop-(viewbox_h/2) > 0 && bigpicTop-(viewbox_h/2) < viewbox_b ){
					viewbox.css({
						'top':bigpicTop-(viewbox_h/2),
					});
					preview_img.css({
						'top':(-bigpicTop+(viewbox_h/2))/scale_h,
					});
				}else if(bigpicTop-(viewbox_h/2) < 0 ){
					viewbox.css({
						'top':0,
					});
					preview_img.css({
						'top':0,
					});
				}else if(bigpicTop-(viewbox_h/2) > viewbox_b ){
					viewbox.css({
						'top': viewbox_b,
					});
					preview_img.css({
						'top':-viewbox_b/scale_h,
					});
				}
				if( bigpicLeft-(viewbox_w/2) > 0 && bigpicLeft-(viewbox_w/2)< viewbox_r  ){
					viewbox.css({
						'left':bigpicLeft-(viewbox_w/2),
					});
					preview_img.css({
						'left':(-bigpicLeft+(viewbox_w/2))/scale_w,
					});
				}else if( bigpicLeft-(viewbox_w/2) < 0 ){
					viewbox.css({
						'left':0,
					});
					preview_img.css({
						'left':0,
					});
				}else if( bigpicLeft-(viewbox_w/2) > viewbox_r ){
					viewbox.css({
						'left':viewbox_r,
					});
					preview_img.css({
						'left':-viewbox_r/scale_w,
					});
				}
			}

		})
		.on('mouseleave','.picbox',function(){
			$('.productImg .viewbox').css({
				'opacity':0,
			});
			$('.productImg .preview').remove();
			preview_str= '<div class="preview">';
		});
	 }
	 /*影片效果*/
	function videoBox(){
		//影片控制
		$(".moreview").on('click','.video_control',function(){
		  var video = document.getElementById("Video");
		  if(video.paused){
			  $(this).addClass('fa-pause').removeClass('fa-play');
			  video.play();
		  }else{
			  $(this).addClass('fa-play').removeClass('fa-pause');
			  video.pause();
		  }
		});

		//影片預覽圖
		if(document.getElementById("Video")){
			document.getElementById("Video").oncanplay=function(){
				var video = $("#Video").get(0);
				var canvas = document.getElementById("video_review");
					canvas.getContext('2d').drawImage(video, 0, 0, 66, 92);
			};
		}
	}
  }(jQuery));