"use strict"

/**
 * jqurey 的动画扩展“缓进缓出”
 */
jQuery.extend(jQuery.easing, {
    easeInOut: function (x, t, b, c, d) {
        if ((t /= d / 2) < 1) return c / 2 * t * t + b
        return -c / 2 * ((--t) * (t - 2) - 1) + b
    }
})

var myBlog = {
    /**
     * 初始化
     */
    init: function () {
        this.tocAnalyse()  // toc目录生成
        if ($("#comment-info").length === 0) {  // 大屏幕登录状态，评论框下两角变圆角
            $(".commentform #comment").css("height", "140px")
                .css('border-radius', '10px')
        }
        for (let num = 0; num < $(".markdown img").length; num++) {  // 为正文中的图片添加查看大图（默认认为图片父标签<a>中的链接是图片原地址）
            let $this = $(".markdown img:eq(" + num + ")")
            let sourceSrc = $(".markdown img:eq(" + num + ")").parent().attr('href')

            if (typeof sourceSrc === "undefined" || sourceSrc.match(/\.(jpeg|jpg|gif|png)$/i) === null) {
                continue
            }

            $this.attr("data-action", "zoom")
                .parent().attr("sourcesrc", sourceSrc)
                .removeAttr("href")
        }
        $("#commentform").attr("onsubmit", "return myBlog.comSubmitTip()")  // 评论提交在表单验证未通过的情况下是不能提交的
    },
    /**
     * 回复
     */
    toggleCommentInput: function ($t) {
        var $ele, getpid, $com_board;
        $ele = $t.parent().parent();
        getpid = $ele.parent().attr("id");
        $com_board = $("#comment-post");

        if ($("#comment-pid").attr("value") === "0") {
            $ele.append($com_board);
            $("#comment-pid").attr("value", getpid);
            $("#comments").toggleClass("com-bottom");
        } else {
            $("#comment-pid").attr("value", "0");
            $("#comments").append($("#comment-post")).toggleClass("com-bottom");
        }
    },

    /**
     * 手机点击展开导航按钮
     */
    navToggle: function ($t) {
        var time, effect, $navbar, $nav_c, nav_height
        time = 'fast'
        effect = 'easeInOut'
        $navbar = $("#navbarResponsive")
        $nav_c = $(".blog-header-c")
        nav_height = ($nav_c.height() === 74) ? $navbar.height() + 74 : 74

        $nav_c.animate({height: nav_height + 'px'}, time, effect)
        $navbar.slideToggle(time, effect)
    },
    /**
     * 定位大屏状态下的导航下拉框位置
     */
    calMargin: function ($t) {
        if (window.outerWidth < 992) return
        var $childMenu, menuWidth, count

        menuWidth = 135  // 大屏幕端的子导航下拉框宽度(px)，可根据需要修改
        count = ($t.outerWidth() - menuWidth) / 2 + "px"
        $childMenu = $t.siblings('.dropdown-menus')

        $childMenu.css("width", menuWidth + "px")
            .css("margin-left", count)
    },
    /**
     * 提交评论前对表单的验证
     */
    comTip: '', comSubmitTip: function (value) {
        if (value === 'judge') {
            let mailReg = /^[a-z0-9]+([._\\-]*[a-z0-9])*@([a-z0-9]+[-a-z0-9]*[a-z0-9]+.){1,63}[a-z0-9]+$/

            let mail = $('#info_m').val()

            if (typeof mail !== "undefined" && mail !== '' && !mailReg.test(mail)) {
                this.comTip = "邮箱格式错误！"
            } else {
                this.comTip = ''
            }
        } else {
            if (this.comTip !== '') {
                alert(this.comTip)
                return false
            } else {
                return true
            }
        }
    },
    /**
     * 显示(隐藏)验证码模态窗
     */
    viewModal: function () {
        var $modal, $lock
        $modal = $(".modal-dialog,.lock-screen")
        $lock = $(".lock-screen")

        $('body,html').toggleClass('scroll-fix')
        $modal.fadeToggle()
        $("input[name='imgcode']").attr("autocomplete", "off")
    },
    /**
     * 点击刷新验证码
     */
    captchaRefresh: function ($t) {
        var timestamp = new Date().getTime()
        var blogUrl = $("#EM_URL").val();

        $t.attr("src", blogUrl + "/include/lib/checkcode.php?" + timestamp)
    },
    /**
     * 图片在点击时，将略缩图转化为原图
     */
    toggleImgSrc: function ($t) {
        $t.addClass('zoomFocus')
        $t.attr('src2', $t.attr('src'))
        $t.attr('src', $t.parent().attr('sourcesrc'))
    },
    /**
     * 归档下拉框的值被改变，跳转到相应日期文章的链接
     */
    jumpLink: function ($t) {
        $(window).attr("location", $t.val())
    },
    /**
     * toc 效果
     *
     * 启用 toc 目录方式: 在文章最开头写上'[toc]'或者'<!--[toc]-->',最好是单独一行
     */
    tocFlag: /\[toc\]/gi,  // 判断toc是否声明的正则表达式
    tocArray: new Array(),  // 储存toc的数组
    tocSetArray: function () {  // 设置toc的数组内填数据
        var $titles = $("#emlogEchoLog h1,h2,h3,h4,h5,h6:eq(0)")

        for (var i = 0; i < $titles.length; i++) {  // 将标签数据依次存入数组
            let $tit = $("#emlogEchoLog [toc-date='title']:eq(" + i + ")")
            myBlog.tocArray[i] = new Array()

            myBlog.tocArray[i]['type'] = $tit.prop('tagName').substring(1)
            myBlog.tocArray[i]['content'] = $tit.text()
            myBlog.tocArray[i]['pos'] = $tit.offset().top
            myBlog.tocArray[i]['id'] = $tit.text()
            $tit.attr("id", myBlog.tocArray[i]['id'])
        }
    },
    /**
     * toc 分析（toc 效果程序的入口）
     */
    tocAnalyse: function () {
        var tocFlag = document.querySelector("#emlogEchoLog p")

        if ($("#emlogEchoLog").length === 0) return  // 不在阅读页面  退出
        if (!this.tocFlag.test($('#emlogEchoLog').html().substring(0, 30))) return  // 未声明 toc 标签，退出
        tocFlag.innerHTML = tocFlag.innerHTML.replace(this.tocFlag, "")  // 去除 toc 声明

        var $logCon = $(".log-con")
        var logConMar = parseInt($logCon.css("margin-left"))
        var $titles = $("#emlogEchoLog h1,h2,h3,h4,h5,h6:eq(0)")

        if ($titles.length > 0) {
            if (window.outerWidth > 1275 || window.outerWidth === 0) {
                $logCon.css("margin-left", logConMar + 150 + 'px')  // 文章正文向右偏移 150px
            }
        } else {
            return  // 未发现标题（h标签） 退出
        }

        $titles.attr("toc-date", "title")
        this.tocSetArray()
        this.tocRender()
        this.tocMobileSet()
    },
    /**
     * toc 目录渲染
     */
    tocRender: function () {
        var tocHtml = ''
        var data = this.tocArray
        var $logcon = $(".log-con")
        var padNum = (window.outerWidth < 1276 && window.outerWidth !== 0) ? 0 : parseInt($logcon.css("margin-left")) - 270
        var judgeN = 0
        var chilPad = 4
        var minType = 6

        for (var i = 0; i < data.length; i++) {
            if (data[i]['type'] < minType) minType = data[i]['type']
        }
        tocHtml = tocHtml + '<div class="toc-con" style="left:' + padNum + 'px" id="toc-con">'	// 渲染
        tocHtml = tocHtml + '<a href="javascript:void(0);" class="close-toc mh" id="closeToc">x</a>'
        tocHtml = tocHtml + '<div style="height:calc(100vh - 70px);overflow-y:scroll;" ><ul>'
        for (var i = 0; i < data.length; i++) {
            let k = minType
            let itemType = data[i]['type']
            let isPadding = ''
            let isBold = ['', '']

            if (itemType !== judgeN) isPadding = 'style="padding-top:' + chilPad + 'px"'
            tocHtml = tocHtml + '<li ' + isPadding + ' id="to' + i + '" title="' + data[i]['content'] + '" >'
            if (itemType === minType) {
                isBold[0] = '<b>'
                isBold[1] = '</b>'
            }
            while (k < itemType) {
                tocHtml = tocHtml + '&nbsp;&nbsp;&nbsp;&nbsp;'
                k++
            }
            tocHtml = tocHtml + isBold[0] + data[i]['content'] + isBold[1] + '</li>'
            judgeN = itemType
        }
        tocHtml = tocHtml + '</ul></div></div>'
        $logcon.before(tocHtml)

        function tocSetListen() {  // 批量添加监听事件
            for (var i = 0; i < data.length; i++) {
                let tempPos = myBlog.tocArray[i]["pos"]
                $('#to' + i).off("click");
                $('#to' + i).bind("click", function () {
                    window.onscroll = function () {
                        tocSetPos()
                    }
                    $('body,html').animate({scrollTop: tempPos}, 300, function () {
                        tocGetPos()
                        window.onscroll = function () {
                            tocSetPos();
                            tocGetPos()
                        }
                    })
                })
            }
        }

        function tocSetPos() {  // 判断位置和设置定位样式
            let articleTop = 200

            if (document.documentElement.scrollTop > articleTop) {
                $("#toc-con").css("position", "fixed")
                    .css("top", "0px")
            } else {
                $("#toc-con").css("position", "absolute")
                    .css("top", articleTop + "px")
            }
        }

        function tocGetPos() {  // 获取位置并改变指定标题颜色
            let $tempItem
            let dataArr = myBlog.tocArray

            $('#toc-con li').css('color', 'unset').attr('isRed', 'n')
            for (var i = 0; i < dataArr.length; i++) {
                let winPos = document.documentElement.scrollTop + 30
                if (winPos > dataArr[i]['pos']) $tempItem = $('#to' + i)
            }
            if ($tempItem) {
                $tempItem.css('color', 'red').attr('isRed', 'y')
            } else {
                return
            }
            let redScreenPos = $("li[isred='y']").offset().top - document.documentElement.scrollTop
            let tocHeight = $("#toc-con div").outerHeight()
            let tocPos = $("#toc-con div").scrollTop()

            if (redScreenPos > tocHeight) {  // 根据文章阅读位置来调整 toc 滚动条位置
                $("#toc-con div").scrollTop($("li[isred='y']").offset().top - tocHeight)
            } else if (redScreenPos < 0) {
                $("#toc-con div").scrollTop(tocPos + redScreenPos - (tocHeight / 2))
            } else {
                if (redScreenPos > (tocHeight / 2)) $("#toc-con div").scrollTop(tocPos + 10)
                if (redScreenPos < (tocHeight / 2 - 40)) $("#toc-con div").scrollTop(tocPos - 10)
            }
        }

        tocSetListen()
        tocSetPos()
        window.onscroll = function () {
            tocSetPos();
            tocGetPos()
        }  // 滚轮事件
        $('#toc-con div').mouseover(function () {  // 根据鼠标位置来调整滚轮事件
            window.onscroll = function () {
                tocSetPos()
            }
        }).mouseout(function () {
            window.onscroll = function () {
                tocSetPos();
                tocGetPos()
            }
        })

        setInterval(function () {  // 每 1.5 秒刷新一次 toc 监听事件和 toc 目录坐标
            tocSetListen()
            myBlog.tocSetArray()
        }, 1500)
    },
    /**
     * toc 目录移动端的部分设置
     */
    tocMobileSet: function () {
        if (window.outerWidth === 0) return  // Chrome 浏览器对新窗口打开的页面，会设置 width 为 0
        if (window.outerWidth > 1275) return
        $(".toc-con").toggle()
        $("[toc-date='title']").append('<a class="toc-link">[目录]</a>')

        $(".toc-link").click(function (e) {  // 添加监听事件
            $(".toc-con").show()
            e.stopPropagation()  // 阻止事件冒泡
        }),

            $("html").click(function (e) {
                if ($(".toc-con") && $(".toc-con").css("display") === "block") {
                    $(".toc-con").hide()
                }
                e.stopPropagation()
            })
    },
    /**
     * 桌面端的 toc 目录关闭
     */
    tocClose: function () {
        let logLeftMar = parseInt($(".log-con").css('margin-left')) - 150;

        $(".toc-con").toggle()
        $(".log-con").css("margin-left", logLeftMar + 'px')
    }

}

/**
 * 事件监听
 */
$(document).ready(function () {
    myBlog.init()

    $(".com-reply").click(function () {
        myBlog.toggleCommentInput($(this))
    })

    $(".blog-header-toggle").click(function () {
        myBlog.navToggle($(this))
    })

    $(".has-down").mouseenter(function () {
        myBlog.calMargin($(this))
    })

    $("#captcha").click(function () {
        myBlog.captchaRefresh($(this))
    })

    $('#comment_submit[type="button"], #close-modal').click(function () {
        myBlog.comSubmitTip('judge')
        if (myBlog.comSubmitTip()) {  // 在显示评论的验证码模态框前，先校验一下评论区内容
            myBlog.viewModal()
        }
    })

    $(".form-control").blur(function () {
        myBlog.comSubmitTip('judge')
    })

    $(".markdown img").click(function () {
        myBlog.toggleImgSrc($(this))
    })

    $("#archive").change(function () {
        myBlog.jumpLink($(this))
    })

    $("#closeToc").click(function () {
        myBlog.tocClose()
    })

    // 切换夜间模式主题
    const toggleButton = document.getElementById('theme-toggle');
    if (toggleButton) {
        toggleButton.addEventListener('click', () => {
            let currentTheme = document.documentElement.getAttribute('data-theme');
            let targetTheme = 'light';

            if (currentTheme === 'light') {
                targetTheme = 'dark';
            }

            document.documentElement.setAttribute('data-theme', targetTheme);
            localStorage.setItem('theme', targetTheme);
        });
    }
})