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/*
 * Juick
 * Copyright (C) 2008-2011, Ugnich Anton
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.juick.http.www;

import com.juick.Message;
import com.juick.Tag;
import com.juick.server.MessagesQueries;
import com.juick.server.TagQueries;
import com.juick.server.UserQueries;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.stream.Collectors;
import javax.servlet.http.HttpServletRequest;

import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.util.StringUtils;
import ru.sape.Sape;

/**
 *
 * @author Ugnich Anton
 */
public class PageTemplates {

    public static Sape sape = null;
    protected static final SimpleDateFormat sdfSQL = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    private static SimpleDateFormat sdfSimple = new SimpleDateFormat("d MMM");
    private static SimpleDateFormat sdfFull = new SimpleDateFormat("d MMM yyyy");
    private static String tagsHTML = null;

    public static void pageHead(PrintWriter out, String title, String headers) {
        out.println("<!DOCTYPE html>");
        out.print("<html>");
        out.print("<head>");
        out.println("<meta http-equiv=\"X-UA-Compatible\" content=\"IE=edge\">");
        out.print("<link rel=\"stylesheet\" href=\"/style.css\"/>");
        out.print("<script type=\"text/javascript\" src=\"//cdnjs.cloudflare.com/ajax/libs/jquery/2.1.4/jquery.min.js\"></script>");
        out.print("<script type=\"text/javascript\" src=\"/scripts.js\"></script>");
        if (headers != null) {
            out.print(headers);
        }
        out.print("<title>" + title + "</title>");
        out.println("<meta name=\"viewport\" content=\"width=device-width,initial-scale=1,user-scalable=no\"/>");
        out.println("<link rel=\"icon\" href=\"//i.juick.com/favicon.png\"/>");
        out.println("<!--[if lt IE 9 & (!IEMobile 7)]>");
        out.println("<script src=\"//cdnjs.cloudflare.com/ajax/libs/html5shiv/3.7.3/html5shiv.min.js\"></script>");
        out.println("<![endif]-->");
        out.println("</head>");
        out.flush();
        out.println("<body>");
    }

    public static void pageNavigation(PrintWriter out, com.juick.User visitor, String search) {
        out.println("<header>");
        out.println("  <div id=\"logo\"><a href=\"/\">Juick</a></div>");
        out.print("  <nav id=\"global\"><ul>");
        out.print("<li><a href=\"/\">Популярные</a></li>");
        out.print("<li><a href=\"/?show=all\" rel=\"nofollow\">Все сообщения</a></li>");
        out.print("<li><a href=\"/?show=photos\" rel=\"nofollow\">Фотографии</a></li>");
        out.println("</ul></nav>");
        out.print("  <div id=\"search\"><form action=\"/\"><input type=\"text\" name=\"search\" class=\"text\" placeholder=\"Поиск\"");
        if (search != null) {
            out.print(" value=\"" + Utils.encodeHTML(search) + "\"");
        }
        out.println("/></form></div>");
        out.println("  <section id=\"headdiv\">");
        if (visitor != null) {
            out.print("    <nav id=\"user\"><ul>");
            out.print("<li><a href=\"/?show=my\">Моя лента</a></li>");
            out.print("<li><a href=\"/pm/inbox\">Приватные</a></li>");
            out.print("<li><a href=\"/?show=discuss\">Обсуждения</a></li>");
            out.print("<li><a href=\"/?show=recommended\">Рекомендации</a></li>");
            out.println("</ul></nav>");
            out.print("    <nav id=\"actions\"><ul>");
            out.print("<li><a href=\"/#post\">Написать</a></li>");
            out.print("<li><a href=\"/" + visitor.getUName() + "\">@" + visitor.getUName() + "</a></li>");
            out.print("<li><a href=\"/logout\">Выйти</a></li>");
            out.println("</ul></nav>");
        } else {
            out.println("<p>Чтобы добавлять сообщения и комментарии, <a href=\"#\" onclick=\"return openDialogLogin()\">представьтесь</a>.</p>");
        }
        out.println("  </section>");
        out.println("</header>");
    }

    public static void pageHomeColumn(PrintWriter out, JdbcTemplate sql, com.juick.User visitor) {
        pageHomeColumn(out, sql, visitor, false);
    }

    public static void pageHomeColumn(PrintWriter out, JdbcTemplate sql, com.juick.User visitor, boolean showAdv) {
        if (tagsHTML == null) {
            tagsHTML = PageTemplates.formatPopularTags(sql, 80);
        }

        out.println("<aside id=\"column\">");
        out.print("  <p class=\"tags\">" + tagsHTML);
        if (showAdv) {
            out.print(" <a href=\"http://ru.wix.com/\">конструктор сайтов</a>");
        }
        out.println("</p>");
//        if (visitor != null) {
//            printContestRating(out, sql);
//        }
        out.println("</aside>");
    }

    public static String formatPopularTags(JdbcTemplate sql, int cnt) {
        List<String> popularTags = TagQueries.getPopularTags(sql).stream()
                .map(t -> "<a href=\"/tag/" + URLEncoder.encode(t) + "\">" + Utils.encodeHTML(t) + "</a>").collect(Collectors.toList());
        return StringUtils.collectionToDelimitedString(popularTags, " ");
    }

    public static void pageFooter(HttpServletRequest request, PrintWriter out, com.juick.User visitor, boolean sapeon) {
        out.println("<div id=\"footer\">");
        out.println("  <div id=\"footer-right\"><a href=\"/settings\" rel=\"nofollow\">Настройки</a> &#183; <a href=\"/help/ru/contacts\" rel=\"nofollow\">Контакты</a> &#183; <a href=\"/help/\" rel=\"nofollow\">Справка</a> &#183; <a href=\"/help/ru/adv\" rel=\"nofollow\">Реклама</a></div>");
        out.print("  <div id=\"footer-social\">");
        out.print("<a href=\"https://twitter.com/Juick\" rel=\"nofollow\" class=\"ico32-twi\">Twitter</a>");
        out.print("<a href=\"https://vk.com/juick\" rel=\"nofollow\" class=\"ico32-vk\">ВКонтакте</a>");
        out.print("<a href=\"https://www.facebook.com/JuickCom\" rel=\"nofollow\" class=\"ico32-fb\">Facebook</a>");
        out.println("</div>");
        out.print("  <div id=\"footer-left\">juick.com &copy; 2008-2016");

        String queryString = request.getQueryString();
        String requestURI = request.getRequestURI();
        if (sapeon && sape != null && (visitor == null || visitor.getUID() == 1) && queryString == null) {
            String links = sape.getPageLinks(requestURI, request.getCookies()).render();
            if (links != null && !links.isEmpty()) {
                out.print("<br/>Спонсоры: " + links);
            }
        }

        out.println("</div>");
        out.println("</div>");

        if (visitor != null) {
            out.println("<script type=\"text/javascript\">");
            out.println("var hash=\"" + visitor.getAuthHash() + "\";");
            out.println("</script>");
        }

        out.println("<script>");
        out.println("(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){");
        out.println("(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),");
        out.println("m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)");
        out.println("})(window,document,'script','//www.google-analytics.com/analytics.js','ga');");
        out.println("ga('create','UA-385578-4','juick.com');");
        out.println("ga('require','displayfeatures');");
        out.println("ga('send','pageview');");

        if (sapeon) {
            out.println("var _acic={dataProvider:10};");
            out.println("(function(){");
            out.println("var e=document.createElement('script');e.type='text/javascript';e.async=true;e.src='//www2.aci'+'nt.net/aci.js';");
            out.println("var t=document.getElementsByTagName('script')[0];t.parentNode.insertBefore(e,t);");
            out.println("})();");
        }

        out.println("</script>");
    }

    public static void pageEnd(PrintWriter out) {
        out.println("</body></html>");
    }

    public static String formatTags(List<Tag> tags) {
        String ret = "";
        for (Tag tag : tags) {
            String tagName = tag.Name.replaceAll("<", "&lt;").replaceAll(">", "&gt;");
            try {
                ret += " *<a href=\"/tag/" + URLEncoder.encode(tag.Name, "utf-8") + "\"";
                if (tag.UsageCnt < 2) {
                    ret += " rel=\"nofollow\"";
                }
                ret += ">" + tagName + "</a>";
            } catch (UnsupportedEncodingException e) {
            }
        }

        return ret;
    }

    public static String formatTags(List<String> tags, com.juick.User user) {
        String ret = "";
        for (String tag : tags) {
            tag = tag.replaceAll("<", "&lt;");
            tag = tag.replaceAll(">", "&gt;");
            try {
                ret += " *<a href=\"";
                if (user == null) {
                    ret += "/tag/";
                } else {
                    ret += "/" + user.getUName() + "/?tag=";
                }
                ret += URLEncoder.encode(tag, "utf-8") + "\">" + tag + "</a>";
            } catch (UnsupportedEncodingException e) {
            }
        }

        return ret;
    }

    public static String formatDate(int minutes, Date fulldate) {
        if (minutes < 1) {
            return "сейчас";
        } else if (minutes < 60) {
            String unit;
            int ld = minutes % 10;
            if ((minutes < 10 || minutes > 20) && ld == 1) {
                unit = "минуту";
            } else if ((minutes < 10 || minutes > 20) && ld > 1 && ld < 5) {
                unit = "минуты";
            } else {
                unit = "минут";
            }
            return minutes + " " + unit + " назад";
        } else if (minutes < 1440) {
            int hours = (minutes / 60);
            String unit;
            int ld = hours % 10;
            if ((hours < 10 || hours > 20) && ld == 1) {
                unit = "час";
            } else if ((hours < 10 || hours > 20) && ld > 1 && ld < 5) {
                unit = "часа";
            } else {
                unit = "часов";
            }
            return hours + " " + unit + " назад";
        } else if (minutes < 20160) {
            int days = (minutes / 1440);
            String unit;
            int ld = days % 10;
            if ((days < 10 || days > 20) && ld == 1) {
                unit = "день";
            } else if ((days < 10 || days > 20) && ld > 1 && ld < 5) {
                unit = "дня";
            } else {
                unit = "дней";
            }
            return days + " " + unit + " назад";
        } else {
            String ret = sdfFull.format(fulldate);
            synchronized (sdfSQL) {
                try {
                    Calendar c = Calendar.getInstance();
                    int curyear = c.get(Calendar.YEAR);
                    c.setTime(fulldate);
                    if (c.get(Calendar.YEAR) == curyear) {
                        ret = sdfSimple.format(fulldate);
                    } else {
                        ret = sdfFull.format(fulldate);
                    }
                } catch (Exception e) {
                    System.err.println("PARSE EXCEPTION: " + fulldate);
                }
            }
            return ret;
        }
    }

    public static String formatJSLocalTime(Date ts) {
        return "<script type=\"text/javascript\">"
                        + "var d=new Date(" + ts.getTime() + ");"
                        + "document.write((d.getDate()<10?'0':'')+d.getDate()+'.'+(d.getMonth()<9?'0':'')+(d.getMonth()+1)+'.'+d.getFullYear()+' '+(d.getHours()<10?'0':'')+d.getHours()+':'+(d.getMinutes()<10?'0':'')+d.getMinutes());"
                        + "</script>";
    }

    public static String formatReplies(int replies) {
        int ld = replies % 10;
        int lh = replies % 100;
        if ((lh < 10 || lh > 20) && ld == 1) {
            return replies + " ответ";
        } else if ((lh < 10 || lh > 20) && ld > 1 && ld < 5) {
            return replies + " ответа";
        } else {
            return replies + " ответов";
        }
    }
    private static Pattern regexLinks2 = Pattern.compile("((?<=\\s)|(?<=\\A))([\\[\\{]|&lt;)((?:ht|f)tps?://(?:www\\.)?([^\\/\\s\\\"\\)\\!]+)/?(?:[^\\]\\}](?<!&gt;))*)([\\]\\}]|&gt;)");

    public static String formatMessageCode(String msg) {
        msg = msg.replaceAll("&", "&amp;");
        msg = msg.replaceAll("<", "&lt;");
        msg = msg.replaceAll(">", "&gt;");

        // http://juick.com/last?page=2
        // <a href="http://juick.com/last?page=2" rel="nofollow">http://juick.com/last?page=2</a>
        msg = msg.replaceAll("((?<=\\s)|(?<=\\A))((?:ht|f)tps?://(?:www\\.)?([^\\/\\s\\n\\\"]+)/?[^\\s\\n\\\"]*)", "$1<a href=\"$2\" rel=\"nofollow\">$2</a>");

        // (http://juick.com/last?page=2)
        // (<a href="http://juick.com/last?page=2" rel="nofollow">http://juick.com/last?page=2</a>)
        Matcher m = regexLinks2.matcher(msg);
        StringBuffer sb = new StringBuffer();
        while (m.find()) {
            String url = m.group(3).replace(" ", "%20").replaceAll("\\s+", "");
            m.appendReplacement(sb, "$1$2<a href=\"" + url + "\" rel=\"nofollow\">" + url + "</a>$5");
        }
        m.appendTail(sb);
        msg = sb.toString();

        return "<pre>" + msg + "</pre>";
    }

    public static String formatMessage(String msg) {
        msg = msg.replaceAll("&", "&amp;");
        msg = msg.replaceAll("<", "&lt;");
        msg = msg.replaceAll(">", "&gt;");

        // --
        // &mdash;
        msg = msg.replaceAll("((?<=\\s)|(?<=\\A))\\-\\-?((?=\\s)|(?=\\Z))", "$1&mdash;$2");

        // http://juick.com/last?page=2
        // <a href="http://juick.com/last?page=2" rel="nofollow">juick.com</a>
        msg = msg.replaceAll("((?<=\\s)|(?<=\\A))((?:ht|f)tps?://(?:www\\.)?([^\\/\\s\\n\\\"]+)/?[^\\s\\n\\\"]*)", "$1<a href=\"$2\" rel=\"nofollow\">$3</a>");

        // [link text][http://juick.com/last?page=2]
        // <a href="http://juick.com/last?page=2" rel="nofollow">link text</a>
        msg = msg.replaceAll("\\[([^\\]]+)\\]\\[((?:ht|f)tps?://[^\\]]+)\\]", "<a href=\"$2\" rel=\"nofollow\">$1</a>");
        msg = msg.replaceAll("\\[([^\\]]+)\\]\\(((?:ht|f)tps?://[^\\)]+)\\)", "<a href=\"$2\" rel=\"nofollow\">$1</a>");

        // #12345
        // <a href="http://juick.com/12345">#12345</a>
        msg = msg.replaceAll("((?<=\\s)|(?<=\\A)|(?<=\\p{Punct}))#(\\d+)((?=\\s)|(?=\\Z)|(?=\\))|(?=\\.)|(?=\\,))", "$1<a href=\"http://juick.com/$2\">#$2</a>$3");

        // #12345/65
        // <a href="http://juick.com/12345#65">#12345/65</a>
        msg = msg.replaceAll("((?<=\\s)|(?<=\\A)|(?<=\\p{Punct}))#(\\d+)/(\\d+)((?=\\s)|(?=\\Z)|(?=\\p{Punct}))", "$1<a href=\"http://juick.com/$2#$3\">#$2/$3</a>$4");

        // *bold*
        // <b>bold</b>
        msg = msg.replaceAll("((?<=\\s)|(?<=\\A)|(?<=\\p{Punct}))\\*([^\\*\\n<>]+)\\*((?=\\s)|(?=\\Z)|(?=\\p{Punct}))", "$1<b>$2</b>$3");

        // /italic/
        // <i>italic</i>
        msg = msg.replaceAll("((?<=\\s)|(?<=\\A))/([^\\/\\n<>]+)/((?=\\s)|(?=\\Z)|(?=\\p{Punct}))", "$1<i>$2</i>$3");

        // _underline_
        // <span class="u">underline</span>
        msg = msg.replaceAll("((?<=\\s)|(?<=\\A))_([^\\_\\n<>]+)_((?=\\s)|(?=\\Z)|(?=\\p{Punct}))", "$1<span class=\"u\">$2</span>$3");

        // /12
        // <a href="#12">/12</a>
        msg = msg.replaceAll("((?<=\\s)|(?<=\\A))\\/(\\d+)((?=\\s)|(?=\\Z)|(?=\\p{Punct}))", "$1<a href=\"#$2\">/$2</a>$3");

        // @username@jabber.org
        // <a href="http://juick.com/username@jabber.org/">@username@jabber.org</a>
        msg = msg.replaceAll("((?<=\\s)|(?<=\\A))@([\\w\\-\\.]+@[\\w\\-\\.]+)((?=\\s)|(?=\\Z)|(?=\\p{Punct}))", "$1<a href=\"http://juick.com/$2/\">@$2</a>$3");

        // @username
        // <a href="http://juick.com/username/">@username</a>
        msg = msg.replaceAll("((?<=\\s)|(?<=\\A))@([\\w\\-]{2,16})((?=\\s)|(?=\\Z)|(?=\\p{Punct}))", "$1<a href=\"http://juick.com/$2/\">@$2</a>$3");

        // (http://juick.com/last?page=2)
        // (<a href="http://juick.com/last?page=2" rel="nofollow">juick.com</a>)
        Matcher m = regexLinks2.matcher(msg);
        StringBuffer sb = new StringBuffer();
        while (m.find()) {
            String url = m.group(3).replace(" ", "%20").replaceAll("\\s+", "");
            m.appendReplacement(sb, "$1$2<a href=\"" + url + "\" rel=\"nofollow\">$4</a>$5");
        }
        m.appendTail(sb);
        msg = sb.toString();

        // > citate
        msg = msg.replaceAll("(?:(?<=\\n)|(?<=\\A))&gt; *(.*)?(\\n|(?=\\Z))", "<q>$1</q>");
        msg = msg.replaceAll("</q><q>", "\n");

        msg = msg.replaceAll("\n", "<br/>\n");
        return msg;
    }

    public static void printMessages(PrintWriter out, JdbcTemplate sql, com.juick.User user, List<Integer> mids, com.juick.User visitor, int YandexID, int ad_mid) {
        List<com.juick.Message> msgs = MessagesQueries.getMessages(sql, mids);

        for (int i = 0; i < msgs.size(); i++) {
            com.juick.Message msg = msgs.get(i);
            if (msg.getMID() == ad_mid) {
                msgs.remove(i);
                msgs.add(0, msg);
                break;
            }
        }

        List<Integer> blUIDs = new ArrayList<Integer>(20);
        if (visitor != null) {
            for (Message msg : msgs) {
                blUIDs.add(msg.getUser().getUID());
            }
            blUIDs = UserQueries.checkBL(sql, visitor.getUID(), blUIDs);
        }

        for (int i = 0; i < msgs.size(); i++) {

            com.juick.Message msg = msgs.get(i);

            List<com.juick.Tag> tags = MessagesQueries.getMessageTags(sql, msg.getMID());
            String tagsStr = formatTags(tags);
            if (msg.ReadOnly) {
                tagsStr += " *readonly";
            }
            if (msg.Privacy < 0) {
                tagsStr += " *friends";
            }
            if (msg.getMID() == ad_mid) {
                tagsStr += " *реклама";
            }

            String txt;
            if (!msg.Tags.isEmpty() && msg.Tags.contains("code")) {
                txt = formatMessageCode(msg.getText());
            } else {
                txt = formatMessage(msg.getText());
            }

            out.println("<article data-mid=\"" + msg.getMID() + "\">");
            out.println("  <aside><a href=\"/" + msg.getUser().getUName() + "/\"><img src=\"//i.juick.com/a/" + msg.getUser().getUID() + ".png\" alt=\"" + msg.getUser().getUName() + "\"/></a></aside>");
            out.println("  <header class=\"u\">@<a href=\"/" + msg.getUser().getUName() + "/\">" + msg.getUser().getUName() + "</a>:" + tagsStr + "</header>");
            out.println("  <header class=\"t\"><a href=\"/" + msg.getUser().getUName() + "/" + msg.getMID() + "\"><time datetime=\"" + sdfSQL.format(msg.getDate()) + "Z\" title=\"" + sdfSQL.format(msg.getDate()) + " GMT\">" + formatDate(msg.TimeAgo, msg.getDate()) + "</time></a></header>");
            if (msg.AttachmentType != null) {
                String fname = msg.getMID() + "." + msg.AttachmentType;
                out.println("  <p class=\"ir\"><a href=\"//i.juick.com/photos-512/" + fname + "\" onclick=\"return showPhotoDialog('" + fname + "')\"><img src=\"//i.juick.com/photos-512/" + fname + "\" alt=\"\"/></a></p>");
            }
            out.println("  <p>" + txt + "</p>");
            if (msg.AttachmentType != null) {
                out.println("  <div class=\"irbr\"></div>");
            }
            out.print("  <nav class=\"l\">");
            msg.ReadOnly |= blUIDs.contains(msg.getUser().getUID());
            out.print("<a href=\"#\" onclick=\"return likeMessage(this," + msg.getMID() + ")\">Мне нравится</a>");
            if (visitor == null && !msg.ReadOnly) {
                out.print("<a href=\"#\" onclick=\"return openDialogLogin()\">Комментировать</a> ");
            } else if (visitor != null && (!msg.ReadOnly || visitor.getUID() == msg.getUser().getUID())) {
                out.print("<a href=\"#\" onclick=\"return showCommentFooter(this)\">Комментировать</a> ");
            }
            if (visitor != null && msg.Privacy < 0 && msg.getUser().getUID() == visitor.getUID()) {
                out.print(" <a href=\"#\" onclick=\"return setPrivacy(this," + msg.getMID() + ")\">Открыть доступ</a>");
            }
            if (visitor != null && visitor.getUID() == 3694) {
                out.print(" <a href=\"#\" onclick=\"return setPopular(this," + msg.getMID() + ",2)\">+</a>");
                out.print(" <a href=\"#\" onclick=\"return setPopular(this," + msg.getMID() + ",-1)\">-</a>");
                out.print(" <a href=\"#\" onclick=\"return setPopular(this," + msg.getMID() + ",-2)\">x</a>");
            }
            out.println("</nav>");

            out.print("  <nav class=\"s\">");
            if (msg.Likes > 0) {
                out.print("<a href=\"/" + msg.getUser().getUName() + "/" + msg.getMID() + "\" class=\"likes\">" + msg.Likes + "</a>");
            }
            if (msg.Replies > 0) {
                out.print("<a href=\"/" + msg.getUser().getUName() + "/" + msg.getMID() + "\" class=\"replies\">" + msg.Replies + "</a>");
            }
            out.println("</nav>");
            out.print("</article>");
        }
    }
}