/*
 * 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.TagQueries;
import com.juick.server.UserQueries;
import java.io.IOException;
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.util.ArrayList;
import java.util.Arrays;
import javax.servlet.ServletException;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

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

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

        ArrayList<Integer> mids;

        String paramShow = request.getParameter("show");

        com.juick.Tag paramTag = null;
        String paramTagStr = request.getParameter("tag");
        if (paramTagStr != null) {
            if (paramTagStr.length() < 64) {
                paramTag = TagQueries.getTag(sql, paramTagStr, false);
            }
            if (paramTag == null) {
                Errors.doGet404(sql, request, response);
                return;
            } else if (!paramTag.Name.equals(paramTagStr)) {
                String url = "/" + user.UName + "/?tag=" + URLEncoder.encode(paramTag.Name, "UTF-8");
                Utils.sendPermanentRedirect(response, url);
                return;
            }
        }

        int paramBefore = 0;
        String paramBeforeStr = request.getParameter("before");
        if (paramBeforeStr != null) {
            try {
                paramBefore = Integer.parseInt(paramBeforeStr);
            } catch (NumberFormatException e) {
            }
        }

        String paramSearch = request.getParameter("search");
        if (paramSearch != null && paramSearch.length() > 64) {
            paramSearch = null;
        }

        int privacy = 0;
        if (visitor != null) {
            if (user.UID == visitor.UID || visitor.UID == 1) {
                privacy = -3;
            } else if (UserQueries.isInWL(sql, user.UID, visitor.UID)) {
                privacy = -2;
            }
        }

        String title;
        if (paramShow == null) {
            if (paramTag != null) {
                title = "Блог " + user.UName + ": *" + Utils.encodeHTML(paramTag.Name);
                mids = MessagesQueries.getUserTag(sql, user.UID, paramTag.TID, privacy, paramBefore);
            } else if (paramSearch != null) {
                title = "Блог " + user.UName + ": " + Utils.encodeHTML(paramSearch);
                mids = MessagesQueries.getUserSearch(sql, sqlSearch, user.UID, Utils.encodeSphinx(paramSearch), privacy, paramBefore);
            } else {
                title = "Блог " + user.UName;
                mids = MessagesQueries.getUserBlog(sql, user.UID, privacy, paramBefore);
            }
        } else if (paramShow.equals("recomm")) {
            title = "Рекомендации " + user.UName;
            mids = MessagesQueries.getUserRecommendations(sql, user.UID, paramBefore);
        } else if (paramShow.equals("photos")) {
            title = "Фотографии " + user.UName;
            mids = MessagesQueries.getUserPhotos(sql, user.UID, privacy, paramBefore);
        } else {
            Errors.doGet404(sql, request, response);
            return;
        }

        if (visitor == null) {
            pageUserRefCookie(request, response, user.UID);
        }

        response.setContentType("text/html; charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            String head = "<link rel=\"alternate\" type=\"application/rss+xml\" title=\"@" + user.UName + "\" href=\"//rss.juick.com/" + user.UName + "/blog\"/>";
            if (paramTag != null && TagQueries.getTagNoIndex(sql, paramTag.TID)) {
                head += "<meta name=\"robots\" content=\"noindex,nofollow\"/>";
            } else if (paramBefore > 0) {
                head += "<meta name=\"robots\" content=\"noindex\"/>";
            }
            PageTemplates.pageHead(out, title, head);
            PageTemplates.pageNavigation(out, visitor, null);
            pageUserColumn(out, sql, user, visitor);

            if (mids.size() > 0) {
                out.println("<section id=\"content\">");

                if (paramTag != null) {
                    out.println("<p class=\"page\"><a href=\"/tag/" + URLEncoder.encode(paramTag.Name, "UTF-8") + "\">← Все записи с тегом <b>" + Utils.encodeHTML(paramTag.Name) + "</b></a></p>");
                }

                PageTemplates.printMessages(out, sql, user, mids, visitor, visitor == null ? 4 : 5, 0);

                if (mids.size() >= 20) {
                    String nextpage = "?before=" + mids.get(mids.size() - 1);
                    if (paramShow != null) {
                        nextpage += "&amp;show=" + paramShow;
                    }
                    if (paramTag != null) {
                        nextpage += "&amp;tag=" + URLEncoder.encode(paramTag.Name, "UTF-8");
                    }
                    if (paramSearch != null) {
                        nextpage += "&amp;search=" + URLEncoder.encode(paramSearch, "UTF-8");
                    }
                    out.println("<p class=\"page\"><a href=\"" + nextpage + "\" rel=\"prev\">Читать дальше →</a></p>");
                }

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

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

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

        if (visitor == null) {
            pageUserRefCookie(request, response, user.UID);
        }

        response.setContentType("text/html; charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            PageTemplates.pageHead(out, "Теги " + user.UName, null);
            PageTemplates.pageNavigation(out, visitor, null);
            pageUserColumn(out, sql, user, visitor);

            out.println("<section id=\"content\">");
            out.println("<p>" + pageUserTags(sql, user, visitor, 0) + "</p>");
            out.println("</section>");

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

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

        if (visitor == null) {
            pageUserRefCookie(request, response, user.UID);
        }

        response.setContentType("text/html; charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            PageTemplates.pageHead(out, "Подписки " + user.UName, null);
            PageTemplates.pageNavigation(out, visitor, null);
            pageUserColumn(out, sql, user, visitor);

            out.println("<section id=\"content\">");
            out.println("<table class=\"users\"><tr>");

            PreparedStatement stmt = null;
            ResultSet rs = null;
            try {
                stmt = sql.prepareStatement("SELECT users.id,users.nick FROM subscr_users INNER JOIN users ON subscr_users.user_id=users.id WHERE subscr_users.suser_id=? ORDER BY users.nick");
                stmt.setInt(1, user.UID);
                rs = stmt.executeQuery();
                rs.beforeFirst();
                int cnt = 0;
                while (rs.next()) {
                    if (cnt % 3 == 0 && cnt > 0) {
                        out.print("</tr><tr>");
                    }
                    out.print("<td><a href=\"/" + rs.getString(2) + "/\"><img src=\"//i.juick.com/as/" + rs.getInt(1) + ".png\"/>" + rs.getString(2) + "</a></td>");
                    cnt++;
                }
            } catch (SQLException e) {
                System.err.println(e);
            } finally {
                Utils.finishSQL(rs, stmt);
            }

            out.println("</tr></table>");
            out.println("</section>");

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

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

        if (visitor == null) {
            pageUserRefCookie(request, response, user.UID);
        }

        response.setContentType("text/html; charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            PageTemplates.pageHead(out, "Читатели " + user.UName, null);
            PageTemplates.pageNavigation(out, visitor, null);
            pageUserColumn(out, sql, user, visitor);

            out.println("<section id=\"content\">");
            out.println("<table class=\"users\"><tr>");

            PreparedStatement stmt = null;
            ResultSet rs = null;
            try {
                stmt = sql.prepareStatement("SELECT users.id,users.nick FROM subscr_users INNER JOIN users ON subscr_users.suser_id=users.id WHERE subscr_users.user_id=? ORDER BY users.nick");
                stmt.setInt(1, user.UID);
                rs = stmt.executeQuery();
                rs.beforeFirst();
                int cnt = 0;
                while (rs.next()) {
                    if (cnt % 3 == 0 && cnt > 0) {
                        out.print("</tr><tr>");
                    }
                    out.print("<td><a href=\"/" + rs.getString(2) + "/\"><img src=\"//i.juick.com/as/" + rs.getInt(1) + ".png\"/>" + rs.getString(2) + "</a></td>");
                    cnt++;
                }
            } catch (SQLException e) {
                System.err.println(e);
            } finally {
                Utils.finishSQL(rs, stmt);
            }

            out.println("</tr></table>");
            out.println("</section>");

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

    public static void pageUserRefCookie(HttpServletRequest request, HttpServletResponse response, int uid) {
        String hReferer = request.getHeader("Referer");
        String ref = Utils.getCookie(request, "ref");

        if (ref == null && (hReferer == null || !(hReferer.startsWith("http://juick.com/") || hReferer.startsWith("https://juick.com/")))) {
            Cookie c = new Cookie("ref", Integer.toString(uid));
            c.setMaxAge(7 * 24 * 60 * 60);
            c.setPath("/");
            response.addCookie(c);
        }
    }

    public static void pageUserColumn(PrintWriter out, Connection sql, com.juick.User user, com.juick.User visitor) {
        out.println("<aside id=\"column\">");
        out.println("  <div id=\"ctitle\"><a href=\"./\"><img src=\"//i.juick.com/as/" + user.UID + ".png\" alt=\"\"/>" + user.UName + "</a></div>");
        if (visitor != null && visitor.UID > 0 && visitor.UID != user.UID) {
            out.println("  <ul id=\"ctoolbar\">");
            if (UserQueries.isSubscribed(sql, visitor.UID, user.UID)) {
                out.println("    <li><a href=\"/post?body=U+%40" + user.UName + "\" title=\"Подписан\"><div style=\"background-position: -48px 0\"></div></a></li>");
            } else {
                out.println("    <li><a href=\"/post?body=S+%40" + user.UName + "\" title=\"Подписаться\"><div style=\"background-position: -16px 0\"></div></a></li>");
            }
            if (UserQueries.isInBL(sql, visitor.UID, user.UID)) {
                out.println("    <li><a href=\"/post?body=BL+%40" + user.UName + "\" title=\"Разблокировать\"><div style=\"background-position: -96px 0\"></div></a></li>");
            } else {
                out.println("    <li><a href=\"/post?body=BL+%40" + user.UName + "\" title=\"Заблокировать\"><div style=\"background-position: -80px 0\"></div></a></li>");
            }
            if (!UserQueries.isInBLAny(sql, user.UID, visitor.UID)) {
                out.println("    <li><a href=\"/pm/sent?uname=" + user.UName + "\" title=\"Написать приватное сообщение\"><div style=\"background-position: -112px 0\"></div></a></li>");
            }
            out.println("  </ul>");
        } else {
            out.println("  <hr/>");
        }
        out.println("  <ul>");
        out.println("    <li><a href=\"./\">Блог</a></li>");
        out.println("    <li><a href=\"./?show=recomm\">Рекомендации</a></li>");
        out.println("    <li><a href=\"./?show=photos\">Фотографии</a></li>");
        out.println("  </ul>");
        out.println("  <hr/>");
        out.println("  <form action=\"./\">");
        out.println("  <p><input type=\"text\" name=\"search\" class=\"inp\" placeholder=\"Поиск\"/></p>");
        out.println("  </form>");
        out.println("  <p class=\"tags\">" + pageUserTags(sql, user, visitor, 20) + "<a href=\"./tags\">...</a></p>");
        out.println("  <hr/>");
        out.println("  <div id=\"ustats\"><ul>");
        out.println("    <li><a href=\"./friends\">Я читаю: " + UserQueries.getStatsIRead(sql, user.UID) + "</a></li>");
        out.println("    <li><a href=\"./readers\">Мои подписчики: " + UserQueries.getStatsMyReaders(sql, user.UID) + "</a></li>");
        out.println("    <li>Сообщений: " + UserQueries.getStatsMessages(sql, user.UID) + "</li>");
        out.println("    <li>Комментариев: " + UserQueries.getStatsReplies(sql, user.UID) + "</li>");
        out.println("  </ul>");

        ArrayList<com.juick.User> iread = UserQueries.getUserReadLeastPopular(sql, user.UID, 8);
        if (!iread.isEmpty()) {
            out.println("<table class=\"iread\"><tr>");
            for (int i = 0; i < iread.size(); i++) {
                if (i == 4) {
                    out.println("</tr><tr>");
                }
                com.juick.User u = iread.get(i);
                out.println("<td><a href=\"/" + u.UName + "/\"><img src=\"//i.juick.com/a/" + u.UID + ".png\" alt=\"" + u.UName + "\"/></a></td>");
            }
            out.println("</tr></table>");
        }

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

    public static String pageUserTags(Connection sql, com.juick.User user, com.juick.User visitor, int cnt) {
        com.juick.Tag tags[] = null;

        int maxUsageCnt = 0;
        PreparedStatement stmt = null;
        ResultSet rs = null;
        try {
            if (cnt > 0) {
                stmt = sql.prepareStatement("SELECT tags.name AS name,COUNT(DISTINCT messages_tags.message_id) AS cnt FROM (messages INNER JOIN messages_tags ON (messages.message_id=messages_tags.message_id)) INNER JOIN tags ON messages_tags.tag_id=tags.tag_id WHERE messages.user_id=? GROUP BY messages_tags.tag_id ORDER BY cnt DESC LIMIT ?", ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_READ_ONLY);
                stmt.setInt(1, user.UID);
                stmt.setInt(2, cnt);
            } else {
                stmt = sql.prepareStatement("SELECT tags.name AS name,COUNT(DISTINCT messages_tags.message_id) AS cnt FROM (messages INNER JOIN messages_tags ON (messages.message_id=messages_tags.message_id)) INNER JOIN tags ON messages_tags.tag_id=tags.tag_id WHERE messages.user_id=? GROUP BY messages_tags.tag_id ORDER BY cnt DESC", ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_READ_ONLY);
                stmt.setInt(1, user.UID);
            }
            rs = stmt.executeQuery();
            rs.last();
            tags = new com.juick.Tag[rs.getRow()];
            rs.beforeFirst();
            cnt = 0;
            while (rs.next()) {
                tags[cnt] = new com.juick.Tag();
                tags[cnt].Name = rs.getString(1);
                tags[cnt].UsageCnt = rs.getInt(2);
                if (tags[cnt].UsageCnt > maxUsageCnt) {
                    maxUsageCnt = tags[cnt].UsageCnt;
                }
                cnt++;
            }
        } catch (SQLException e) {
            System.err.println(e);
        } finally {
            Utils.finishSQL(rs, stmt);
        }

        if (tags != null && cnt > 0) {
            Arrays.sort(tags, 0, cnt);
        }

        String ret = "";
        for (int i = 0; i < cnt; i++) {
            String tag = Utils.encodeHTML(tags[i].Name);
            try {
                tag = "<a href=\"./?tag=" + URLEncoder.encode(tags[i].Name, "UTF-8") + "\" title=\"" + tags[i].UsageCnt + "\">" + tag + "</a>";
            } catch (UnsupportedEncodingException e) {
            }

            if (tags[i].UsageCnt > maxUsageCnt / 3 * 2) {
                ret += "<big>" + tag + "</big> ";
            } else if (tags[i].UsageCnt > maxUsageCnt / 3) {
                ret += "<small>" + tag + "</small> ";
            } else {
                ret += tag + " ";
            }
        }
        return ret;
    }
}