/*
 * Copyright (c) 2010-2016, b3log.org & hacpai.com
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/**
 * @fileoverview Page util, load heighlight and process comment.
 *
 * @author <a href="http://vanessa.b3log.org">Liyuan Li</a>
 * @author <a href="http://88250.b3log.org">Liang Ding</a>
 * @version 1.2.3.6, Nov 8, 2016
 */
var Page = function (tips) {
    this.currentCommentId = "";
    this.tips = tips;
};
$.extend(Page.prototype, {
    /*
     * @description 评论时点击表情，在评论内容中插入相关代码
     * @param {String} name 用于区别回复评论还是对文章的评论
     */
    insertEmotions: function (name) {
        var _it = this;
        if (name === undefined) {
            name = "";
        }

        $("#emotions" + name + " span").click(function () {
            var $comment = $("#comment" + name);
            var endPosition = _it._getCursorEndPosition($comment[0]);
            var key = "[" + this.className + "]",
                    textValue = $comment[0].value;
            textValue = textValue.substring(0, endPosition) + key + textValue.substring(endPosition, textValue.length);
            $("#comment" + name).val(textValue);
            if ($.browser.msie) {
                endPosition -= textValue.split('\n').length - 1;
                var oR = $comment[0].createTextRange();
                oR.collapse(true);
                oR.moveStart('character', endPosition + 6);
                oR.select();
            } else {
                $comment[0].setSelectionRange(endPosition + 6, endPosition + 6);
            }
        });
    },
    /**
     * @description 获取当前光标最后位置
     * @param {Dom} textarea 评论框对象
     * @returns {Num} 光标位置
     */
    _getCursorEndPosition: function (textarea) {
        textarea.focus();
        if (textarea.setSelectionRange) { // W3C
            return textarea.selectionEnd;
        } else if (document.selection) { // IE
            var i = 0,
                    oS = document.selection.createRange(),
                    oR = document.body.createTextRange();
            oR.moveToElementText(textarea);
            oS.getBookmark();
            for (i = 0; oR.compareEndPoints('StartToStart', oS) < 0 && oS.moveStart("character", -1) !== 0; i++) {
                if (textarea.value.charAt(i) === '\n') {
                    i++;
                }
            }
            return i;
        }
    },
    /*
     * @description 评论校验
     * @param {String} state 用于区别回复评论还是对文章的评论
     */
    validateComment: function (state) {
        if (Util.isLoggedIn()) {
            var commenterContent = $("#comment" + state).val().replace(/(^\s*)|(\s*$)/g, "");
            if (2 > commenterContent.length || commenterContent.length > 500) {
                $("#commentErrorTip" + state).html(this.tips.commentContentCannotEmptyLabel);
                $("#comment" + state).focus();
            } else {
                return true;
            }
            $("#commentErrorTip" + state).show();
            return false;
        }

        var commentName = $("#commentName" + state).val().replace(/(^\s*)|(\s*$)/g, ""),
                commenterContent = $("#comment" + state).val().replace(/(^\s*)|(\s*$)/g, "");
        if (2 > commentName.length || commentName.length > 20) {
            $("#commentErrorTip" + state).html(this.tips.nameTooLongLabel);
            $("#commentName" + state).focus();
        } else if ($("#commentEmail" + state).val().replace(/\s/g, "") === "") {
            $("#commentErrorTip" + state).html(this.tips.mailCannotEmptyLabel);
            $("#commentEmail" + state).focus();
        } else if (!/^((([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+(\.([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+)*)|((\x22)((((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(([\x01-\x08\x0b\x0c\x0e-\x1f\x7f]|\x21|[\x23-\x5b]|[\x5d-\x7e]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(\\([\x01-\x09\x0b\x0c\x0d-\x7f]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]))))*(((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(\x22)))@((([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)+(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.?$/i.test($("#commentEmail" + state).val())) {
            $("#commentErrorTip" + state).html(this.tips.mailInvalidLabel);
            $("#commentEmail" + state).focus();
        } else if (2 > commenterContent.length || commenterContent.length > 500) {
            $("#commentErrorTip" + state).html(this.tips.commentContentCannotEmptyLabel);
            $("#comment" + state).focus();
        } else if ($("#commentValidate" + state).val().replace(/\s/g, "") === "") {
            $("#commentErrorTip" + state).html(this.tips.captchaCannotEmptyLabel);
            $("#commentValidate" + state).focus();
        } else {
            return true;
        }
        $("#commentErrorTip" + state).show();
        return false;
    },
    /*
     * @description 把评论中的标识替换为图片
     * @param {Dom} selector
     */
    replaceCommentsEm: function (selector) {
        var $commentContents = $(selector);
        for (var i = 0; i < $commentContents.length; i++) {
            var str = $commentContents[i].innerHTML;
            $commentContents[i].innerHTML = Util.replaceEmString(str);
        }
    },
    /*
     * @description 初始化 SyantaxHighlighter
     * @param {Array} languages 需要加载的语言 
     */
    _initSyntaxHighlighter: function (languages) {
        // load brush js
        for (var i = 0; i < languages.length; i++) {
            switch (languages[i]) {
                case "groovy":
                    languages[i] = 'groovy				' +
                            latkeConfig.staticServePath + '/js/lib/SyntaxHighlighter/scripts/shBrushGroovy.js';
                    break;
                case "java":
                    languages[i] = 'java				' +
                            latkeConfig.staticServePath + '/js/lib/SyntaxHighlighter/scripts/shBrushJava.js';
                    break;
                case "php":
                    languages[i] = 'php				' +
                            latkeConfig.staticServePath + '/js/lib/SyntaxHighlighter/scripts/shBrushPhp.js';
                    break;
                case "scala":
                    languages[i] = 'scala				' +
                            latkeConfig.staticServePath + '/js/lib/SyntaxHighlighter/scripts/shBrushScala.js';
                    break;
                case "sql":
                    languages[i] = 'sql				' +
                            latkeConfig.staticServePath + '/js/lib/SyntaxHighlighter/scripts/shBrushSql.js';
                    break;
                case "applescript":
                    languages[i] = 'applescript			' +
                            latkeConfig.staticServePath + '/js/lib/SyntaxHighlighter/scripts/shBrushAppleScript.js';
                    break;
                case "as3":
                case "actionscript3":
                    languages[i] = 'actionscript3 as3                  ' +
                            latkeConfig.staticServePath + '/js/lib/SyntaxHighlighter/scripts/shBrushAS3.js';
                    break;
                case "bash":
                case "shell":
                    languages[i] = 'bash shell                         ' +
                            latkeConfig.staticServePath + '/js/lib/SyntaxHighlighter/scripts/shBrushBash.js';
                    break;
                case "coldfusion":
                case "cf":
                    languages[i] = 'coldfusion cf			' +
                            latkeConfig.staticServePath + '/js/lib/SyntaxHighlighter/scripts/shBrushColdFusion.js';
                    break;
                case "c#":
                case "c-sharp":
                case "csharp":
                    languages[i] = 'c# c-sharp csharp                  ' +
                            latkeConfig.staticServePath + '/js/lib/SyntaxHighlighter/scripts/shBrushCSharp.js';
                    break;
                case "cpp":
                case "c":
                    languages[i] = 'cpp c				' +
                            latkeConfig.staticServePath + '/js/lib/SyntaxHighlighter/scripts/shBrushCpp.js';
                    break;
                case "css":
                    languages[i] = 'css				' +
                            latkeConfig.staticServePath + '/js/lib/SyntaxHighlighter/scripts/shBrushCss.js';
                    break;
                case "delphi":
                case "pascal":
                    languages[i] = 'delphi pascal			' +
                            latkeConfig.staticServePath + '/js/lib/SyntaxHighlighter/scripts/shBrushDelphi.js';
                    break;
                case "diff":
                case "patch":
                case "pas":
                    languages[i] = 'diff patch pas			' +
                            latkeConfig.staticServePath + '/js/lib/SyntaxHighlighter/scripts/shBrushDiff.js';
                    break;
                case "erl":
                case "erlang":
                    languages[i] = 'erl erlang                         ' +
                            latkeConfig.staticServePath + '/js/lib/SyntaxHighlighter/scripts/shBrushErlang.js';
                    break;
                case "js":
                case "jscript":
                case "javascript":
                    languages[i] = 'js jscript javascript              ' +
                            latkeConfig.staticServePath + '/js/lib/SyntaxHighlighter/scripts/shBrushJScript.js';
                    break;
                case "jfx":
                case "javafx":
                    languages[i] = 'jfx javafx                 	' +
                            latkeConfig.staticServePath + '/js/lib/SyntaxHighlighter/scripts/shBrushJavaFX.js';
                    break;
                case "perl":
                case "pl":
                    languages[i] = 'perl pl                    	' +
                            latkeConfig.staticServePath + '/js/lib/SyntaxHighlighter/scripts/shBrushPerl.js';
                    break;
                case "plain":
                case "text":
                    languages[i] = 'text plain                 	' +
                            latkeConfig.staticServePath + '/js/lib/SyntaxHighlighter/scripts/shBrushPlain.js';
                    break;
                case "ps":
                case "powershell":
                    languages[i] = 'ps powershell                      ' +
                            latkeConfig.staticServePath + '/js/lib/SyntaxHighlighter/scripts/shBrushPowerShell.js';
                    break;
                case "py":
                case "python":
                    languages[i] = 'py python                          ' +
                            latkeConfig.staticServePath + '/js/lib/SyntaxHighlighter/scripts/shBrushPython.js';
                    break;
                case "rails":
                case "ror":
                case "ruby":
                case "rb":
                    languages[i] = 'ruby rails ror rb          	' +
                            latkeConfig.staticServePath + '/js/lib/SyntaxHighlighter/scripts/shBrushRuby.js';
                    break;
                case "sass":
                case "scss":
                    languages[i] = 'sass scss                  	' +
                            latkeConfig.staticServePath + '/js/lib/SyntaxHighlighter/scripts/shBrushSass.js';
                    break;
                case "vb":
                case "vbnet":
                    languages[i] = 'vb vbnet                   	' +
                            latkeConfig.staticServePath + '/js/lib/SyntaxHighlighter/scripts/shBrushVb.js';
                    break;
                case "xml":
                case "xhtml":
                case "xslt":
                case "html":
                    languages[i] = 'xml xhtml xslt html                ' +
                            latkeConfig.staticServePath + '/js/lib/SyntaxHighlighter/scripts/shBrushXml.js';
                    break;
                default:
                    break;
            }
        }

        // code high lighter
        SyntaxHighlighter.autoloader.apply(null, languages);
        SyntaxHighlighter.config.stripBrs = true;
        SyntaxHighlighter.all();
    },
    /*
     * @description 加载 SyntaxHighlighter 
     * @param {String} SHTheme SyntaxHighLighter 样式
     */
    _loadSyntaxHighlighter: function (SHTheme) {
        var cssName = SHTheme ? SHTheme : "shCoreEclipse",
                that = this;
        // load css
        if (document.createStyleSheet) {
            document.createStyleSheet(latkeConfig.staticServePath + "/js/lib/SyntaxHighlighter/styles/" + cssName + ".css");
        } else {
            $("head").append($("<link rel='stylesheet' href='" + latkeConfig.staticServePath + "/js/lib/SyntaxHighlighter/styles/"
                    + cssName + ".css' type='text/css' charset='utf-8' />"));
        }

        // load js
        $.ajax({
            url: latkeConfig.staticServePath + "/js/lib/SyntaxHighlighter/scripts/shCore.js",
            dataType: "script",
            cache: true,
            success: function () {
                // get brush settings
                var languages = [],
                        isScrip = false;
                $(".article-body pre, .code-highlight pre").each(function () {
                    var name = this.className.split(";")[0];
                    var language = name.substr(7, name.length - 1);
                    if (this.className.indexOf("html-script: true") > -1 &&
                            (language !== "xml" && language !== "xhtml" &&
                                    language !== "xslt" && language != "html")) {
                        isScrip = true;
                    }

                    languages.push(language);
                });
                // when html-script is true, need shBrushXml.js
                if (isScrip) {
                    $.ajax({
                        url: latkeConfig.staticServePath + "/js/lib/SyntaxHighlighter/scripts/shBrushXml.js",
                        dataType: "script",
                        cache: true,
                        success: function () {
                            that._initSyntaxHighlighter(languages);
                        }
                    });
                } else {
                    that._initSyntaxHighlighter(languages);
                }
            }
        });
    },
    /*
     * @description 解析语法高亮
     * @param {Obj} obj 语法高亮配置参数
     * @param {Obj} obj.SHTheme 语法高亮 SyntaxHighLighter 样式
     */
    parseLanguage: function (obj) {
        var isPrettify = false,
                isSH = false;
        $(".article-body pre, .code-highlight pre").each(function () {
            if (this.className.indexOf("brush") > -1) {
                isSH = true;
            }

            if (this.className.indexOf("prettyprint") > -1) {
                isPrettify = true;
            }
        });

        if (isSH) {
            this._loadSyntaxHighlighter(obj ? (obj.SHTheme ? obj.SHTheme : undefined) : undefined);
            return false;
        }

        if (isPrettify) {
            // load css
            if (document.createStyleSheet) {
                document.createStyleSheet(latkeConfig.staticServePath + "/js/lib/google-code-prettify/prettify.css");
            } else {
                $("head").append($("<link rel='stylesheet' href='" + latkeConfig.staticServePath + "/js/lib/google-code-prettify/prettify.css'>"));
            }

            // load js
            $.ajax({
                url: latkeConfig.staticServePath + "/js/lib/google-code-prettify/prettify.js",
                dataType: "script",
                cache: true,
                success: function () {
                    prettyPrint();
                }
            });
            return false;
        }


        // otherelse use highlight
        // load css
        if (document.createStyleSheet) {
            document.createStyleSheet(latkeConfig.staticServePath + "/js/lib/highlight.js-9.6.0/styles/default.css");
        } else {
            $("head").append($("<link rel='stylesheet' href='" + latkeConfig.staticServePath + "/js/lib/highlight.js-9.6.0/styles/github.css'>"));
        }
        $.ajax({
            url: latkeConfig.staticServePath + "/js/lib/highlight.js-9.6.0/highlight.pack.js",
            dataType: "script",
            cache: true,
            success: function () {
                hljs.initHighlightingOnLoad();
            }
        });

    },
    /*
     * @description 文章/自定义页面加载
     * @param {Obj} obj 配置设定
     * @param {Obj} obj.language 代码高亮配置
     */
    load: function (obj) {
        var that = this;
        // emotions
        that.insertEmotions();
        // language
        that.parseLanguage(obj ? (obj.language ? obj.language : undefined) : undefined);
        // submit comment
        $("#commentValidate").keypress(function (event) {
            if (event.keyCode === 13) {
                that.submitComment();
            }
        });

        $("#comment").keypress(function (event) {
            if (event.keyCode === 13 && event.ctrlKey) {
                that.submitComment();
            }
        });
        // captcha
        $("#captcha").click(function () {
            $(this).attr("src", latkeConfig.servePath + "/captcha.do?code=" + Math.random());
        });
        // cookie
        if (!Util.isLoggedIn()) {
            $("#commentEmail").val(Cookie.readCookie("commentEmail"));
            $("#commentURL").val(Cookie.readCookie("commentURL"));
            $("#commentName").val(Cookie.readCookie("commentName"));
        }
        // if no JSON, add it.
        try {
            JSON
        } catch (e) {
            document.write("<script src=\"" + latkeConfig.staticServePath + "/js/lib/json2.js\"><\/script>");
        }

    },
    /*
     * @description 加载随机文章
     * @param {String} headTitle 随机文章标题
     */
    loadRandomArticles: function (headTitle) {
        var randomArticles1Label = this.tips.randomArticles1Label;
        // getRandomArticles
        $.ajax({
            url: latkeConfig.servePath + "/get-random-articles.do",
            type: "POST",
            success: function (result, textStatus) {
                var randomArticles = result.randomArticles;
                if (!randomArticles || 0 === randomArticles.length) {
                    $("#randomArticles").remove();
                    return;
                }

                var listHtml = "";
                for (var i = 0; i < randomArticles.length; i++) {
                    var article = randomArticles[i];
                    var title = article.articleTitle;
                    var randomArticleLiHtml = "<li>" + "<a rel='nofollow' title='" + title + "' href='" + latkeConfig.servePath +
                            article.articlePermalink + "'>" + title + "</a></li>";
                    listHtml += randomArticleLiHtml;
                }

                var titleHTML = headTitle ? headTitle : "<h4>" + randomArticles1Label + "</h4>";
                var randomArticleListHtml = titleHTML + "<ul class='marginLeft12'>" + listHtml + "</ul>";
                $("#randomArticles").append(randomArticleListHtml);
            }
        });
    },
    /*
     * @description 加载相关文章
     * @param {String} id 文章 id
     * @param {String} headTitle 相关文章标题
     */
    loadRelevantArticles: function (id, headTitle) {
        $.ajax({
            url: latkeConfig.servePath + "/article/id/" + id + "/relevant/articles",
            type: "GET",
            success: function (data, textStatus) {
                var articles = data.relevantArticles;
                if (!articles || 0 === articles.length) {
                    $("#relevantArticles").remove();
                    return;
                }
                var listHtml = "";
                for (var i = 0; i < articles.length; i++) {
                    var article = articles[i];
                    var title = article.articleTitle;
                    var articleLiHtml = "<li>"
                            + "<a rel='nofollow' title='" + title + "' href='" + latkeConfig.servePath + article.articlePermalink + "'>"
                            + title + "</a></li>"
                    listHtml += articleLiHtml
                }

                var relevantArticleListHtml = headTitle
                        + "<ul class='marginLeft12'>"
                        + listHtml + "</ul>";
                $("#relevantArticles").append(relevantArticleListHtml);
            },
            error: function () {
                $("#relevantArticles").remove();
            }
        });
    },
    /*
     * @description 加载站外相关文章
     * @param {String} tags 文章 tags
     * @param {String} headTitle 站外相关文章标题
     */
    loadExternalRelevantArticles: function (tags, headTitle) {
        var tips = this.tips;
        try {
            $.ajax({
                url: "http://rhythm.b3log.org:80/get-articles-by-tags.do?tags=" + tags
                        + "&blogHost=" + tips.blogHost + "&paginationPageSize=" + tips.externalRelevantArticlesDisplayCount,
                type: "GET",
                cache: true,
                dataType: "jsonp",
                error: function () {
                    $("#externalRelevantArticles").remove();
                },
                success: function (data, textStatus) {
                    var articles = data.articles;
                    if (!articles || 0 === articles.length) {
                        $("#externalRelevantArticles").remove();
                        return;
                    }
                    var listHtml = "";
                    for (var i = 0; i < articles.length; i++) {
                        var article = articles[i];
                        var title = article.articleTitle;
                        var articleLiHtml = "<li>"
                                + "<a rel='nofollow' title='" + title + "' target='_blank' href='" + article.articlePermalink + "'>"
                                + title + "</a></li>"
                        listHtml += articleLiHtml
                    }

                    var titleHTML = headTitle ? headTitle : "<h4>" + tips.externalRelevantArticles1Label + "</h4>";
                    var randomArticleListHtml = titleHTML
                            + "<ul class='marginLeft12'>"
                            + listHtml + "</ul>";
                    $("#externalRelevantArticles").append(randomArticleListHtml);
                }
            });
        } catch (e) {
            // 忽略相关文章加载异常：load script error
        }
    },
    /*
     * @description 提交评论
     * @param {String} commentId 回复评论时的评论 id
     * @param {String} state 区分回复文章还是回复评论的标识
     */
    submitComment: function (commentId, state) {
        if (!state) {
            state = '';
        }
        var that = this,
                tips = this.tips,
                type = "article";
        if (tips.externalRelevantArticlesDisplayCount === undefined) {
            type = "page";
        }

        if (this.validateComment(state)) {
            $("#submitCommentButton" + state).attr("disabled", "disabled");
            $("#commentErrorTip" + state).show().html(this.tips.loadingLabel);
            var requestJSONObject = {
                "oId": tips.oId,
                "commentContent": $("#comment" + state).val().replace(/(^\s*)|(\s*$)/g, "")
            };

            if (!Util.isLoggedIn()) {
                requestJSONObject = {
                    "oId": tips.oId,
                    "commentContent": $("#comment" + state).val().replace(/(^\s*)|(\s*$)/g, ""),
                    "commentEmail": $("#commentEmail" + state).val(),
                    "commentURL": Util.proessURL($("#commentURL" + state).val().replace(/(^\s*)|(\s*$)/g, "")),
                    "commentName": $("#commentName" + state).val().replace(/(^\s*)|(\s*$)/g, ""),
                    "captcha": $("#commentValidate" + state).val()
                };
                Cookie.createCookie("commentName", requestJSONObject.commentName, 365);
                Cookie.createCookie("commentEmail", requestJSONObject.commentEmail, 365);
                Cookie.createCookie("commentURL", $("#commentURL" + state).val().replace(/(^\s*)|(\s*$)/g, ""), 365);
            }

            if (state === "Reply") {
                requestJSONObject.commentOriginalCommentId = commentId;
            }

            $.ajax({
                type: "POST",
                url: latkeConfig.servePath + "/add-" + type + "-comment.do",
                cache: false,
                contentType: "application/json",
                data: JSON.stringify(requestJSONObject),
                success: function (result) {
                    if (!result.sc) {
                        $("#commentErrorTip" + state).html(result.msg);
                        $("#comment" + state).val("").focus();
                        $("#submitCommentButton" + state).removeAttr("disabled");
                        if (!Util.isLoggedIn()) {
                            $("#captcha" + state).attr("src", latkeConfig.servePath + "/captcha.do?code=" + Math.random());
                        }

                        return;
                    }

                    $("#comment" + state).val(result.commentContent); // Server processed XSS
                    $("#commentName" + state).val(result.commentName); // Server processed XSS

                    result.replyNameHTML = "";
                    if (!Util.isLoggedIn()) {
                        $("#captcha" + state).attr("src", latkeConfig.servePath + "/captcha.do?code=" + Math.random());
                        if ($("#commentURL" + state).val().replace(/\s/g, "") === "") {
                            result.replyNameHTML = '<a>' + $("#commentName" + state).val() + '</a>';
                        } else {
                            result.replyNameHTML = '<a href="' + Util.proessURL($("#commentURL" + state).val()) +
                                    '" target="_blank">' + $("#commentName" + state).val() + '</a>';
                        }
                        result.userName = result.commentName;
                    } else {
                        result.replyNameHTML = '<a href="' + window.location.host +
                                '" target="_blank">' + Util.getUserName() + '</a>';
                        result.userName = Util.getUserName();
                    }

                    that.addCommentAjax(addComment(result, state), state);
                    $("#submitCommentButton" + state).removeAttr("disabled");
                }
            });
        }
    },
    /*
     * @description 添加回复评论表单
     * @param {String} id 被回复的评论 id
     * @param {String} commentFormHTML 评论表单HTML
     * @param {String} endHTML 判断该表单使用 table 还是 div 标签，然后进行构造
     */
    addReplyForm: function (id, commentFormHTML, endHTML) {
        var that = this;
        if (id === this.currentCommentId) {
            if ($("#commentNameReply").val() === "") {
                $("#commentNameReply").focus();
            } else if ($("#commentEmailReply").val() === "") {
                $("#commentEmailReply").focus();
            } else {
                $("#commentReply").focus();
            }
            return;
        }
        $("#replyForm").remove();
        endHTML = endHTML ? endHTML : "";
        if (endHTML === "</div>") {
            $("#" + id).append(commentFormHTML + $("#commentForm").html() + endHTML);
        } else {
            $("#" + id).append(commentFormHTML + $("#commentForm").html() + "</table>" + endHTML);
        }

        // change id, bind event and set value
        $("#replyForm input, #replyForm textarea").each(function () {
            this.id = this.id + "Reply";
        });
        $("#commentNameReply").val(Cookie.readCookie("commentName"));
        $("#commentEmailReply").val(Cookie.readCookie("commentEmail"));
        var $label = $("#replyForm #commentURLLabel");
        if ($label.length === 1) {
            $label.attr("id", "commentURLLabelReply");
        }

        $("#commentURLReply").val(Cookie.readCookie("commentURL"));
        $("#replyForm #emotions").attr("id", "emotionsReply");
        this.insertEmotions("Reply");
        $("#commentReply").unbind().keypress(function (event) {
            if (event.keyCode === 13 && event.ctrlKey) {
                that.submitComment(id, 'Reply');
                event.preventDefault();
            }
        });
        $("#commentValidateReply").unbind().keypress(function (event) {
            if (event.keyCode === 13) {
                that.submitComment(id, 'Reply');
                event.preventDefault();
            }
        });
        $("#replyForm #captcha").attr("id", "captchaReply").
                attr("src", latkeConfig.servePath + "/captcha.do?" + new Date().getTime()).click(function () {
            $(this).attr("src", latkeConfig.servePath + "/captcha.do?code=" + Math.random());
        });
        $("#replyForm #commentErrorTip").attr("id", "commentErrorTipReply").html("").hide();
        $("#replyForm #submitCommentButton").attr("id", "submitCommentButtonReply");
        $("#replyForm #submitCommentButtonReply").unbind("click").removeAttr("onclick").click(function () {
            that.submitComment(id, 'Reply');
        });
        if ($("#commentNameReply").val() === "") {
            $("#commentNameReply").focus();
        } else if ($("#commentEmailReply").val() === "") {
            $("#commentEmailReply").focus();
        } else {
            $("#commentReply").focus();
        }

        this.currentCommentId = id;
    },
    /* 
     * @description 隐藏回复评论的浮出层
     * @parma {String} id 被回复的评论 id
     */
    hideComment: function (id) {
        $("#commentRef" + id).hide();
    },
    /* 
     * @description 显示回复评论的浮出层
     * @parma {Dom} it 触发事件的 dom
     * @param {String} id 被回复的评论 id
     * @param {Int} top 位置相对浮出层的高度
     * @param {String} [parentTag] it 如果嵌入在 position 为 relative 的元素 A 中时，需取到 A 元素
     */
    showComment: function (it, id, top, parentTag) {
        var positionTop = parseInt($(it).position().top);
        if (parentTag) {
            positionTop = parseInt($(it).parents(parentTag).position().top);
        }
        if ($("#commentRef" + id).length > 0) {
            // 此处重复设置 top 是由于评论为异步，原有回复评论的显示位置应往下移动
            $("#commentRef" + id).show().css("top", (positionTop + top) + "px");
        } else {
            var $refComment = $("#" + id).clone();
            $refComment.addClass("comment-body-ref").attr("id", "commentRef" + id);
            $refComment.find("#replyForm").remove();
            $("#comments").append($refComment);
            $("#commentRef" + id).css("top", (positionTop + top) + "px");
        }
    },
    /* 
     * @description 回复不刷新，将回复内容异步添加到评论列表中
     * @parma {String} commentHTML 回复内容 HTML
     * @param {String} state 用于区分评论文章还是回复评论
     */
    addCommentAjax: function (commentHTML, state) {
        if ($("#comments").children().length > 0) {
            $($("#comments").children()[0]).before(commentHTML);
        } else {
            $("#comments").html(commentHTML);
        }

        if (state === "") {
            $("#commentErrorTip").html("").hide();
            $("#comment").val("");
            $("#commentValidate").val("");
            $("#captcha").attr("src", latkeConfig.servePath + "/captcha.do?code=" + Math.random());
        } else {
            $("#replyForm").remove();
        }
        window.location.hash = "#comments";
    }
});