/*
 * 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.server.MessagesQueries;
import com.juick.server.UserQueries;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.util.ArrayList;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

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

    protected void doGetThread(Connection sql, HttpServletRequest request, HttpServletResponse response, int MID) throws ServletException, IOException {
        com.juick.User visitor = Utils.getVisitorUser(sql, request, response);

        if (!MessagesQueries.canViewThread(sql, MID, visitor != null ? visitor.UID : 0)) {
            response.sendError(403);
            return;
        }

        com.juick.Message msg = MessagesQueries.getMessage(sql, MID);

        boolean listview = false;
        String paramView = request.getParameter("view");
        if (paramView != null) {
            if (paramView.equals("list")) {
                listview = true;
                if (visitor != null) {
                    UserQueries.setUserOptionInt(sql, visitor.UID, "repliesview", 1);
                }
            } else if (paramView.equals("tree") && visitor != null) {
                UserQueries.setUserOptionInt(sql, visitor.UID, "repliesview", 0);
            }
        } else if (visitor != null && UserQueries.getUserOptionInt(sql, visitor.UID, "repliesview", 0) == 1) {
            listview = true;
        }

        String title = msg.User.UName + ": " + msg.getTagsString();

        response.setContentType("text/html; charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            PageTemplates.pageHead(out, title, "<link rel=\"alternate\" type=\"application/rss+xml\" title=\"@" + msg.User.UName + "\" href=\"//rss.juick.com/" + msg.User.UName + "/blog\"/>");
            PageTemplates.pageNavigation(out, visitor, null);

            out.println("<section id=\"content\" style=\"margin-left: 0; width: 100%\">");
            printMessage(out, sql, msg, visitor);
            printReplies(out, sql, msg, visitor, listview);
            out.println("</section>");

            PageTemplates.pageDialogTemplate(out);
            PageTemplates.pageFooter(request, out, visitor, false);
            PageTemplates.pageEnd(out);
        } finally {
            out.close();
        }
    }

    public static com.juick.Message printMessage(PrintWriter out, Connection sql, com.juick.Message msg, com.juick.User visitor) {
        msg.VisitorCanComment = visitor != null;

        String tags = (msg.Tags.isEmpty()) ? "" : PageTemplates.formatTags(msg.Tags, msg.User);
        if (msg.ReadOnly) {
            tags += " *readonly";
            msg.VisitorCanComment = false;
        }
        switch (msg.Privacy) {
            case 2:
                tags += " *public";
                break;
            case -1:
                tags += " *friends";
                break;
            case -2:
                tags += " *friends";
                break;
            case -3:
                tags += " *private";
                break;
        }

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

        if (!tags.isEmpty()) {
            tags = "<span class=\"msg-tags\">" + tags + "</span>";
        }

        out.println("<ul>");
        out.println("  <li id=\"msg-" + msg.MID + "\" class=\"msg msgthread\">");
        out.println("    <div class=\"msg-avatar\"><a href=\"/" + msg.User.UName + "/\"><img src=\"//i.juick.com/a/" + msg.User.UID + ".png\" alt=\"" + msg.User.UName + "\"/></a></div>");
        out.println("    <div class=\"msg-cont\">");
        out.println("    <div class=\"msg-menu\"><a href=\"#\" onclick=\"showMessageLinksDialog(" + msg.MID + "); return false\"></a></div>");
        out.println("    <div class=\"msg-header\"><a href=\"/" + msg.User.UName + "/\">@" + msg.User.UName + "</a>:" + tags + "</div>");
        out.println("    <div class=\"msg-ts\">" + PageTemplates.formatJSLocalTime(msg.TimestampString) + "</div>");
        out.println("    <div class=\"msg-txt\">" + txt + "</div>");

        if (msg.AttachmentType != null) {
            out.println("    <div class=\"msg-media\"><a href=\"//i.juick.com/p/" + msg.MID + "." + msg.AttachmentType + "\"><img src=\"//i.juick.com/photos-512/" + msg.MID + "." + msg.AttachmentType + "\" alt=\"\"/></a></div>");
        }

        boolean visitorInBL = false;
        if (visitor != null) {
            if (visitor.UID == msg.User.UID) {
                msg.VisitorCanComment = true;
            } else {
                visitorInBL = UserQueries.isInBL(sql, msg.User.UID, visitor.UID);
                if (visitorInBL) {
                    msg.VisitorCanComment = false;
                }
            }
        }

        if (msg.VisitorCanComment) {
            out.println("    <form action=\"/post\" method=\"POST\" enctype=\"multipart/form-data\"><input type=\"hidden\" name=\"mid\" value=\"" + msg.MID + "\"/>");
            out.println("      <div class=\"msg-comment\"><div class=\"ta-wrapper\"><textarea name=\"body\" rows=\"1\" class=\"reply\" placeholder=\"Написать комментарий\" onkeypress=\"postformListener(this.form,event)\"></textarea></div></div>");
            out.println("    </form>");
        }

        ArrayList<String> recomm = MessagesQueries.getMessageRecommendations(sql, msg.MID);
        if (!recomm.isEmpty()) {
            out.print("    <div class=\"" + (msg.VisitorCanComment ? "msg-recomms" : "msg-comments") + "\">Рекомендовали (" + recomm.size() + "): ");
            for (int i = 0; i < recomm.size(); i++) {
                if (i > 0) {
                    out.print(", ");
                }
                out.print("<a href=\"/" + recomm.get(i) + "/\">@" + recomm.get(i) + "</a>");
            }
            out.println("</div>");
        }
        out.println("    </div>");
        out.println("  </li>");

        out.println("  <li id=\"mtoolbar\"><ul>");
        out.println("    <li><a href=\"/" + msg.MID + "\"><div style=\"background-position: -64px 0\"></div>" + msg.MID + "</a></li>");
        if (visitor != null) {
            if (visitor.UID != msg.User.UID) {
                if (MessagesQueries.isSubscribed(sql, visitor.UID, msg.MID)) {
                    out.println("    <li><a href=\"/post?body=U+%23" + msg.MID + "\"><div style=\"background-position: -48px 0\"></div>Подписан</a></li>");
                } else {
                    out.println("    <li><a href=\"/post?body=S+%23" + msg.MID + "\"><div style=\"background-position: -16px 0\"></div>Подписаться</a></li>");
                }
                if (!visitorInBL) {
                    out.println("    <li><a href=\"/post?body=%21+%23" + msg.MID + "\"><div style=\"background-position: -32px 0\"></div>Рекомендовать</a></li>");
                }
            } else {
                out.println("    <li><a href=\"/post?body=D+%23" + msg.MID + "\"><div style=\"background-position: 0\"></div>Удалить</a></li>");
            }
        }
        out.println("  </ul></li>");
        out.println("</ul>");

        return msg;
    }

    public static void printReplies(PrintWriter out, Connection sql, com.juick.Message msg, com.juick.User visitor, boolean listview) {
        ArrayList<com.juick.Message> replies = MessagesQueries.getReplies(sql, msg.MID);

        ArrayList<Integer> blUIDs = new ArrayList<Integer>();
        for (int i = 0; i < replies.size(); i++) {
            com.juick.Message reply = replies.get(i);
            if (reply.User.UID != msg.User.UID && !blUIDs.contains(reply.User.UID)) {
                blUIDs.add(reply.User.UID);
            }
            if (reply.ReplyTo > 0) {
                boolean added = false;
                for (int n = 0; n < replies.size(); n++) {
                    if (replies.get(n).RID == reply.ReplyTo) {
                        replies.get(n).childs.add(reply);
                        added = true;
                        break;
                    }
                }
                if (!added) {
                    reply.ReplyTo = 0;
                }
            }
        }

        if (!replies.isEmpty()) {
            if (visitor != null && msg.User.UID == visitor.UID) {
                for (int i = 0; i < replies.size(); i++) {
                    replies.get(i).VisitorCanComment = true;
                }
            } else if (visitor != null && msg.VisitorCanComment) {
                blUIDs = UserQueries.checkBL(sql, visitor.UID, blUIDs);
                for (int i = 0; i < replies.size(); i++) {
                    com.juick.Message reply = replies.get(i);
                    reply.VisitorCanComment = reply.User.UID == visitor.UID || !blUIDs.contains(reply.User.UID);
                }
            } else {
                for (int i = 0; i < replies.size(); i++) {
                    replies.get(i).VisitorCanComment = false;
                }
            }

            boolean foldable = false;
            if (replies.size() > 10) {
                for (int i = 0; i < replies.size() - 1; i++) {
                    if (replies.get(i).getChildsCount() > 1) {
                        foldable = true;
                        break;
                    }
                }
            }

            out.println("<div class=\"title2\">");
            out.print("  <div class=\"title2-right\">");
            if (listview) {
                out.print("<a href=\"?view=tree\">Показать деревом</a>");
            } else {
                if (foldable) {
                    out.print("<span id=\"unfoldall\"><a href=\"#\" onclick=\"$('#replies>li').show(); $('#replies .msg-comments').hide(); $('#unfoldall').hide(); return false\">Раскрыть все</a> &#183; </span>");
                }
                out.print("<a href=\"?view=list\">Показать списком</a>");
            }
            out.print("</div>");
            out.println("  <h2>Ответы (" + replies.size() + ")</h2>");
            out.println("</div>");

            out.println("<ul id=\"replies\">");
            if (listview) {
                printList(out, replies);
            } else {
                printTree(out, replies, 0, 0, false);
            }
            out.println("</ul>");

            for (int i = 0; i < replies.size(); i++) {
                replies.get(i).cleanupChilds();
            }
            replies.clear();
        }
    }

    public static void printTree(PrintWriter out, ArrayList<com.juick.Message> replies, int ReplyTo, int margin, boolean hidden) {
        if (margin > 240) {
            margin = 240;
        }

        for (int i = 0; i < replies.size(); i++) {
            com.juick.Message msg = replies.get(i);
            if (msg.ReplyTo == ReplyTo) {

                out.print("  <li id=\"" + msg.RID + "\" class=\"msg\" style=\"");
                if (margin > 0) {
                    out.print("margin-left: " + margin + "px;");
                }
                if (hidden) {
                    out.print("display:none;");
                }
                out.println("\">");
                out.println("    <div class=\"msg-avatar\"><a href=\"/" + msg.User.UName + "/\"><img src=\"//i.juick.com/a/" + msg.User.UID + ".png\" alt=\"" + msg.User.UName + "\"/></a></div>");
                out.println("    <div class=\"msg-cont\">");
                out.println("    <div class=\"msg-menu\"><a href=\"#\" onclick=\"showMessageLinksDialog(" + msg.MID + "," + msg.RID + "); return false\"></a></div>");
                out.println("    <div class=\"msg-header\"><a href=\"/" + msg.User.UName + "/\">@" + msg.User.UName + "</a>:</div>");
                out.println("    <div class=\"msg-ts\"><a href=\"/" + msg.MID + "#" + msg.RID + "\" title=\"" + msg.TimestampString + " GMT\">" + PageTemplates.formatDate(msg.TimeAgo, msg.TimestampString) + "</a></div>");
                out.println("    <div class=\"msg-txt\">" + PageTemplates.formatMessage(msg.Text) + "</div>");
                if (msg.AttachmentType != null) {
                    out.println("    <div class=\"msg-media\"><a href=\"//i.juick.com/p/" + msg.MID + "-" + msg.RID + "." + msg.AttachmentType + "\"><img src=\"//i.juick.com/photos-512/" + msg.MID + "-" + msg.RID + "." + msg.AttachmentType + "\" alt=\"\"/></a></div>");
                }
                if (msg.VisitorCanComment) {
                    out.println("    <div class=\"msg-links\"><a href=\"#\" onclick=\"return showCommentForm(" + msg.MID + "," + msg.RID + ")\">Ответить</a></div>");
                    out.println("    <div class=\"msg-comment\" style=\"display: none\"></div>");
                }

                int childs = msg.getChildsCount();
                if (ReplyTo == 0 && childs > 1 && replies.size() > 10) {
                    out.println("    <div class=\"msg-comments\"><a href=\"#\" onclick=\"return showMoreReplies(" + msg.RID + ")\">" + PageTemplates.formatReplies(childs) + "</a></div>");

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

                if (ReplyTo == 0 && childs > 1 && replies.size() > 10) {
                    printTree(out, msg.childs, msg.RID, margin + 20, true);
                } else if (childs > 0) {
                    printTree(out, msg.childs, msg.RID, margin + 20, hidden);
                }
            }
        }
    }

    public static void printList(PrintWriter out, ArrayList<com.juick.Message> replies) {
        for (int i = 0; i < replies.size(); i++) {
            com.juick.Message msg = replies.get(i);

            out.print("  <li id=\"" + msg.RID + "\" class=\"msg\">");
            out.println("    <div class=\"msg-avatar\"><a href=\"/" + msg.User.UName + "/\"><img src=\"//i.juick.com/a/" + msg.User.UID + ".png\"></a></div>");
            out.println("    <div class=\"msg-cont\">");
            out.println("    <div class=\"msg-menu\"><a href=\"#\" onclick=\"showMessageLinksDialog(" + msg.MID + "," + msg.RID + "); return false\"></a></div>");
            out.println("    <div class=\"msg-header\"><a href=\"/" + msg.User.UName + "/\">@" + msg.User.UName + "</a>:</div>");
            out.println("    <div class=\"msg-ts\"><a href=\"/" + msg.MID + "#" + msg.RID + "\" title=\"" + msg.TimestampString + " GMT\">" + PageTemplates.formatDate(msg.TimeAgo, msg.TimestampString) + "</a></div>");
            out.println("    <div class=\"msg-txt\">" + PageTemplates.formatMessage(msg.Text) + "</div>");
            if (msg.AttachmentType != null) {
                out.println("    <div class=\"msg-media\"><a href=\"//i.juick.com/p/" + msg.MID + "-" + msg.RID + "." + msg.AttachmentType + "\"><img src=\"//i.juick.com/photos-512/" + msg.MID + "-" + msg.RID + "." + msg.AttachmentType + "\" alt=\"\"/></a></div>");
            }
            out.print("    <div class=\"msg-links\">/" + msg.RID);
            if (msg.ReplyTo > 0) {
                out.print(" в ответ на <a href=\"#" + msg.ReplyTo + "\">/" + msg.ReplyTo + "</a>");
            }
            if (msg.VisitorCanComment) {
                out.println(" &#183; <a href=\"#\" onclick=\"return showCommentForm(" + msg.MID + "," + msg.RID + ")\">Ответить</a></div>");
                out.println("    <div class=\"msg-comment\" style=\"display: none\"></div>");
            }
            out.println("    </div>");
            out.println("  </li>");
        }
    }
}