(function($) {
	$(document).ready(function() {
		$("pre").addClass("prettyprint");
		prettyPrint();
		// 隐藏禁用javascript（针对微信内置浏览器）的提示
		$('.noscript').hide();

		// 图片缩放效果
		var $imgs = $('img').not('.avatar-image,.carousel-image,.card-cover-image,.qrcode');

		// 给图片加上点击放大效果（materialbox插件）
		$imgs.addClass('materialboxed').each(function(i, el) {
			$(this).attr('data-caption', $(this).attr('alt') || ' ');
		}).materialbox();

		// 优化表格的显示
		$('table').each(function() {
			var $table = $(this);
			// 除去多行代码的情况
			if ($table.find('pre').length == 0) {
				$table.addClass('responsive-table striped bordered');
			}
		});

		$(".button-collapse").sideNav();
		$(".category-menu").sideNav();
		$(".tag-menu").sideNav();
		
		// 针对gallery post
		$('.carousel').carousel({full_width: true});
		$('.carousel-control.prev').click(function() {
			$('.carousel').carousel('prev');
		});
		$('.carousel-control.next').click(function() {
			$('.carousel').carousel('next');
		});

		// 文章目录
		$('article').not('.simple-article').find('h1').add('h2').add('h3').add('h4').add('h5').add('h6').scrollSpy();

		// 目录随屏幕滚动（防止目录过长越过footer）
		var $toc = $('.toc');
		var scrollTargetTop = 0;
		$(window).scroll(function() {
			var $activeLink = $toc.find('a.active.section');
			if ($(window).scrollTop() < 100) {
				scrollTargetTop = 0;
			} else {
				if ($activeLink[0]) {
					scrollTargetTop = $activeLink.offset().top - $toc.offset().top;
				}
			}
			$toc.css('top', '-' + scrollTargetTop + 'px');
		});

		// 修正文章目录的left-border颜色
		var color = $('.table-of-contents-text').css('color');
		$('.table-of-contents-link').css('border-left-color', color);

		// 针对移动端做的优化：FAB按钮点击一下收回
		if (/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent)) {
			$('.fixed-action-btn').addClass('click-to-toggle');
		}
		// 回到顶部
		$('.btn-return-top').click(function() {
			$('body, html').animate({
				scrollTop: 0
			}, 500);
		});

		// 搜索功能
		$('.modal-trigger').leanModal({
			// 打开搜索框时自动聚焦
			ready: function() {
				if ($('#search').is(":visible")) {
					$('#search-input').focus();
				}
			}
		});
		initSearch('/search.xml', 'search-input', 'search-result');
	});

	// 初始化搜索与匹配函数
	var initSearch = function(path, search_id, content_id) {
		'use strict';
		$.ajax({
			url: path,
			dataType: "xml",
			success: function(xmlResponse) {
				// get the contents from search data
				var datas = $("entry", xmlResponse).map(function() {
					return {
						title: $("title", this).text(),
						content: $("content", this).text(),
						url: $("url", this).text()
					};
				}).get();
				var $input = document.getElementById(search_id);
				var $resultContent = document.getElementById(content_id);
				$input.addEventListener('input', function() {
					var str = '<ul class=\"search-result-list\">';
					var keywords = this.value.trim().toLowerCase().split(/[\s\-]+/);
					$resultContent.innerHTML = "";
					if (this.value.trim().length <= 0) {
						return;
					}
					// perform local searching
					datas.forEach(function(data) {
						var isMatch = true;
						var content_index = [];
						var data_title = data.title.trim().toLowerCase();
						var data_content = data.content.trim().replace(/<[^>]+>/g, "").toLowerCase();
						var data_url = data.url;
						var index_title = -1;
						var index_content = -1;
						var first_occur = -1;
						// only match artiles with not empty titles and contents
						if (data_title != '' && data_content != '') {
							keywords.forEach(function(keyword, i) {
								index_title = data_title.indexOf(keyword);
								index_content = data_content.indexOf(keyword);
								if (index_title < 0 && index_content < 0) {
									isMatch = false;
								} else {
									if (index_content < 0) {
										index_content = 0;
									}
									if (i == 0) {
										first_occur = index_content;
									}
								}
							});
						}
						// show search results
						if (isMatch) {
							keywords.forEach(function(keyword) {
								var regS = new RegExp(keyword, "gi");
								data_title = data_title.replace(regS, "<span class=\"search-keyword pink lighten-2\">" + keyword + "</span>");
							});

							str += "<li><a href='" + data_url + "' class='search-result-title'>" + data_title + "</a>";
							var content = data.content.trim().replace(/<[^>]+>/g, "");
							if (first_occur >= 0) {
								// cut out 100 characters
								var start = first_occur - 20;
								var end = first_occur + 80;
								if (start < 0) {
									start = 0;
								}
								if (start == 0) {
									end = 100;
								}
								if (end > content.length) {
									end = content.length;
								}
								var match_content = content.substring(start, end);
								// highlight all keywords
								keywords.forEach(function(keyword) {
									var regS = new RegExp(keyword, "gi");
									match_content = match_content.replace(regS, "<span class=\"search-keyword pink lighten-2\">" + keyword + "</span>");
								});

								str += "<p class=\"search-result\">..." + match_content + "...</p>"
							}
							str += "</li>";
						}
					});
					str += "</ul>";
					$resultContent.innerHTML = str;
				});
			}
		});
	}
})(jQuery);