/*
 * 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.server;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Collections;

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

    public static boolean canViewThread(Connection sql, int mid, int uid) {

        int privacy = 0;
        int owner_uid = 0;

        PreparedStatement stmt = null;
        ResultSet rs = null;
        try {
            stmt = sql.prepareStatement("SELECT user_id,privacy FROM messages WHERE messages.message_id=?");
            stmt.setInt(1, mid);
            rs = stmt.executeQuery();
            if (rs.first()) {
                owner_uid = rs.getInt(1);
                privacy = rs.getInt(2);
            }
        } catch (SQLException e) {
            System.err.println(e);
        } finally {
            Utils.finishSQL(rs, stmt);
        }

        return privacy >= 0
                || uid == owner_uid
                || ((privacy == -1 || privacy == -2) && uid > 0 && UserQueries.isInWL(sql, owner_uid, uid))
                || (privacy == -3 && uid > 0 && hasAccessToMessage(sql, mid, uid));
    }

    public static boolean hasAccessToMessage(Connection sql, int mid, int uid) {
        boolean ret = false;

        PreparedStatement stmt = null;
        ResultSet rs = null;
        try {
            stmt = sql.prepareStatement("SELECT 1 FROM messages_access WHERE message_id=? AND user_id=?");
            stmt.setInt(1, mid);
            stmt.setInt(2, uid);
            rs = stmt.executeQuery();
            if (rs.first()) {
                ret = rs.getInt(1) == 1;
            }
        } catch (SQLException e) {
            System.err.println(e);
        } finally {
            Utils.finishSQL(rs, stmt);
        }

        return ret;
    }

    public static boolean isReadOnly(Connection sql, int mid) {
        boolean ret = false;

        PreparedStatement stmt = null;
        ResultSet rs = null;
        try {
            stmt = sql.prepareStatement("SELECT readonly FROM messages WHERE message_id=?");
            stmt.setInt(1, mid);
            rs = stmt.executeQuery();
            if (rs.first()) {
                ret = rs.getInt(1) == 1;
            }
        } catch (SQLException e) {
            System.err.println(e);
        } finally {
            Utils.finishSQL(rs, stmt);
        }
        return ret;
    }

    public static boolean isSubscribed(Connection sql, int uid, int mid) {
        boolean ret = false;

        PreparedStatement stmt = null;
        ResultSet rs = null;
        try {
            stmt = sql.prepareStatement("SELECT 1 FROM subscr_messages WHERE suser_id=? AND message_id=?");
            stmt.setInt(1, uid);
            stmt.setInt(2, mid);
            rs = stmt.executeQuery();
            if (rs.first()) {
                ret = rs.getInt(1) == 1;
            }
        } catch (SQLException e) {
            System.err.println(e);
        } finally {
            Utils.finishSQL(rs, stmt);
        }
        return ret;
    }

    public static int getMessagePrivacy(Connection sql, int mid) {
        return SQLHelpers.getInt(sql, "SELECT privacy FROM messages WHERE message_id=?", mid, -4);
    }

    public static com.juick.Message getMessage(Connection sql, int mid) {
        com.juick.Message msg = null;

        PreparedStatement stmt = null;
        ResultSet rs = null;
        try {
            stmt = sql.prepareStatement("SELECT messages.user_id,users.nick,TIMESTAMPDIFF(MINUTE,messages.ts,NOW()),DATE_FORMAT(messages.ts,'%Y-%m-%d %H:%i:%s'),messages.readonly,messages.privacy,messages.replies,messages.attach,messages.place_id,messages.lat,messages.lon,messages.votes FROM messages INNER JOIN users ON messages.user_id=users.id WHERE messages.message_id=?");
            stmt.setInt(1, mid);
            rs = stmt.executeQuery();
            if (rs.first()) {
                msg = new com.juick.Message();
                msg.MID = mid;
                msg.User = new com.juick.User();
                msg.User.UID = rs.getInt(1);
                msg.User.UName = rs.getString(2);
                msg.TimeAgo = rs.getInt(3);
                msg.TimestampString = rs.getString(4);
                msg.ReadOnly = rs.getBoolean(5);
                msg.Privacy = rs.getInt(6);
                msg.FriendsOnly = msg.Privacy < 0;
                msg.Replies = rs.getInt(7);
                msg.AttachmentType = rs.getString(8);
                //if (rs.getInt(9) > 0) {
                //    msg.Place = PlacesQueries.getPlace(sql, rs.getInt(9));
                //}
                if (rs.getDouble(10) != 0) {
                    msg.Place = new com.juick.Place();
                    msg.Place.lat = rs.getDouble(10);
                    msg.Place.lon = rs.getDouble(11);
                }
                msg.Votes = rs.getInt(12);
            }
        } catch (SQLException e) {
            System.err.println(e);
        } finally {
            Utils.finishSQL(rs, stmt);
        }

        if (msg == null) {
            return null;
        }

        try {
            stmt = sql.prepareStatement("SELECT tags,repliesby,txt FROM messages_txt WHERE message_id=?");
            stmt.setInt(1, mid);
            rs = stmt.executeQuery();
            if (rs.first()) {
                if (rs.getString(1) != null) {
                    msg.parseTags(rs.getString(1));
                }
                msg.RepliesBy = rs.getString(2);
                msg.Text = rs.getString(3);
            }
        } catch (SQLException e) {
            System.err.println(e);
        } finally {
            Utils.finishSQL(rs, stmt);
        }

        return msg;
    }

    public static com.juick.Message getReply(Connection sql, int mid, int rid) {
        com.juick.Message msg = null;

        PreparedStatement stmt = null;
        ResultSet rs = null;
        try {
            stmt = sql.prepareStatement("SELECT replies.user_id,users.nick,replies.replyto,DATE_FORMAT(replies.ts,'%Y-%m-%d %H:%i:%s'),replies.attach,replies.txt FROM replies INNER JOIN users ON replies.user_id=users.id WHERE replies.message_id=? AND replies.reply_id=?");
            stmt.setInt(1, mid);
            stmt.setInt(2, rid);
            rs = stmt.executeQuery();
            if (rs.first()) {
                msg = new com.juick.Message();
                msg.MID = mid;
                msg.RID = rid;
                msg.User = new com.juick.User();
                msg.User.UID = rs.getInt(1);
                msg.User.UName = rs.getString(2);
                msg.ReplyTo = rs.getInt(3);
                msg.TimestampString = rs.getString(4);
                msg.AttachmentType = rs.getString(5);
                msg.Text = rs.getString(6);
            }
        } catch (SQLException e) {
            System.err.println(e);
        } finally {
            Utils.finishSQL(rs, stmt);
        }

        return msg;
    }

    public static com.juick.User getMessageAuthor(Connection sql, int mid) {
        com.juick.User user = null;

        PreparedStatement stmt = null;
        ResultSet rs = null;
        try {
            stmt = sql.prepareStatement("SELECT messages.user_id,users.nick FROM messages INNER JOIN users ON messages.user_id=users.id WHERE messages.message_id=?");
            stmt.setInt(1, mid);
            rs = stmt.executeQuery();
            if (rs.first()) {
                user = new com.juick.User();
                user.UID = rs.getInt(1);
                user.UName = rs.getString(2);
            }
        } catch (SQLException e) {
            System.err.println(e);
        } finally {
            Utils.finishSQL(rs, stmt);
        }
        return user;
    }

    public static ArrayList<Integer> getMessageTagsIDs(Connection sql, int mid) {
        ArrayList<Integer> tids = new ArrayList<Integer>();

        PreparedStatement stmt = null;
        ResultSet rs = null;
        try {
            stmt = sql.prepareStatement("SELECT tag_id FROM messages_tags WHERE message_id=?");
            stmt.setInt(1, mid);
            rs = stmt.executeQuery();
            rs.beforeFirst();
            while (rs.next()) {
                tids.add(rs.getInt(1));
            }
        } catch (SQLException e) {
            System.err.println(e);
        } finally {
            Utils.finishSQL(rs, stmt);
        }

        return tids;
    }

    public static ArrayList<String> getMessageRecommendations(Connection sql, int mid) {
        ArrayList<String> users = new ArrayList<String>();

        PreparedStatement stmt = null;
        ResultSet rs = null;
        try {
            stmt = sql.prepareStatement("SELECT users.nick FROM favorites INNER JOIN users ON (favorites.message_id=? AND favorites.user_id=users.id)");
            stmt.setInt(1, mid);
            rs = stmt.executeQuery();
            rs.beforeFirst();
            while (rs.next()) {
                users.add(rs.getString(1));
            }
        } catch (SQLException e) {
            System.err.println(e);
        } finally {
            Utils.finishSQL(rs, stmt);
        }

        return users;
    }

    public static ArrayList<Integer> getAll(Connection sql, int visitor_uid, int before) {
        ArrayList<Integer> mids = new ArrayList<Integer>(20);

        PreparedStatement stmt = null;
        ResultSet rs = null;
        try {
            if (visitor_uid > 1) {
                if (before > 0) {
                    stmt = sql.prepareStatement("SELECT message_id FROM messages WHERE message_id<? AND (privacy>0 OR user_id=?) AND lang!='fa' AND user_id NOT IN (SELECT bl_user_id FROM bl_users WHERE user_id=?) ORDER BY message_id DESC LIMIT 20");
                    stmt.setInt(1, before);
                    stmt.setInt(2, visitor_uid);
                    stmt.setInt(3, visitor_uid);
                } else {
                    stmt = sql.prepareStatement("SELECT message_id FROM messages WHERE (privacy>0 OR user_id=?) AND lang!='fa' AND user_id NOT IN (SELECT bl_user_id FROM bl_users WHERE user_id=?) ORDER BY message_id DESC LIMIT 20");
                    stmt.setInt(1, visitor_uid);
                    stmt.setInt(2, visitor_uid);
                }
            } else {
                if (before > 0) {
                    stmt = sql.prepareStatement("SELECT message_id FROM messages WHERE message_id<? AND privacy>0 AND lang!='fa' ORDER BY message_id DESC LIMIT 20");
                    stmt.setInt(1, before);
                } else {
                    stmt = sql.prepareStatement("SELECT message_id FROM messages WHERE privacy>0 AND lang!='fa' ORDER BY message_id DESC LIMIT 20");
                }

            }
            rs = stmt.executeQuery();
            rs.beforeFirst();
            while (rs.next()) {
                mids.add(rs.getInt(1));
            }
        } catch (SQLException e) {
            System.err.println(e);
        } finally {
            Utils.finishSQL(rs, stmt);
        }
        return mids;
    }

    public static ArrayList<Integer> getTag(Connection sql, int tid, int visitor_uid, int before, int cnt) {
        ArrayList<Integer> mids = new ArrayList<Integer>(20);

        PreparedStatement stmt = null;
        ResultSet rs = null;
        try {
            if (before > 0) {
                stmt = sql.prepareStatement("SELECT messages.message_id FROM messages_tags INNER JOIN messages USING(message_id) WHERE messages_tags.tag_id=? AND messages.message_id<? AND (messages.privacy>0 OR messages.user_id=?) ORDER BY messages.message_id DESC LIMIT ?");
                stmt.setInt(1, tid);
                stmt.setInt(2, before);
                stmt.setInt(3, visitor_uid);
                stmt.setInt(4, cnt);
            } else {
                stmt = sql.prepareStatement("SELECT messages.message_id FROM messages_tags INNER JOIN messages USING(message_id) WHERE messages_tags.tag_id=? AND (messages.privacy>0 OR messages.user_id=?) ORDER BY messages.message_id DESC LIMIT ?");
                stmt.setInt(1, tid);
                stmt.setInt(2, visitor_uid);
                stmt.setInt(3, cnt);
            }
            rs = stmt.executeQuery();
            rs.beforeFirst();
            while (rs.next()) {
                mids.add(rs.getInt(1));
            }
        } catch (SQLException e) {
            System.err.println(e);
        } finally {
            Utils.finishSQL(rs, stmt);
        }
        return mids;
    }

    public static ArrayList<Integer> getTags(Connection sql, String tids, int visitor_uid, int before, int cnt) {
        ArrayList<Integer> mids = new ArrayList<Integer>(20);

        PreparedStatement stmt = null;
        ResultSet rs = null;
        try {
            if (before > 0) {
                stmt = sql.prepareStatement("SELECT messages.message_id FROM messages_tags INNER JOIN messages USING(message_id) WHERE messages_tags.tag_id IN (" + tids + ") AND messages.message_id<? AND (messages.privacy>0 OR messages.user_id=?) ORDER BY messages.message_id DESC LIMIT ?");
                stmt.setInt(1, before);
                stmt.setInt(2, visitor_uid);
                stmt.setInt(3, cnt);
            } else {
                stmt = sql.prepareStatement("SELECT messages.message_id FROM messages_tags INNER JOIN messages USING(message_id) WHERE messages_tags.tag_id IN (" + tids + ") AND (messages.privacy>0 OR messages.user_id=?) ORDER BY messages.message_id DESC LIMIT ?");
                stmt.setInt(1, visitor_uid);
                stmt.setInt(2, cnt);
            }
            rs = stmt.executeQuery();
            rs.beforeFirst();
            while (rs.next()) {
                mids.add(rs.getInt(1));
            }
        } catch (SQLException e) {
            System.err.println(e);
        } finally {
            Utils.finishSQL(rs, stmt);
        }
        return mids;
    }

    public static ArrayList<Integer> getPlace(Connection sql, int place_id, int visitor_uid, int before) {
        ArrayList<Integer> mids = new ArrayList<Integer>(20);

        PreparedStatement stmt = null;
        ResultSet rs = null;
        try {
            if (before > 0) {
                stmt = sql.prepareStatement("SELECT message_id FROM messages WHERE place_id=? AND message_id<? AND (privacy>0 OR user_id=?) ORDER BY message_id DESC LIMIT 20");
                stmt.setInt(1, place_id);
                stmt.setInt(2, before);
                stmt.setInt(3, visitor_uid);
            } else {
                stmt = sql.prepareStatement("SELECT message_id FROM messages WHERE place_id=? AND (privacy>0 OR user_id=?) ORDER BY message_id DESC LIMIT 20");
                stmt.setInt(1, place_id);
                stmt.setInt(2, visitor_uid);
            }
            rs = stmt.executeQuery();
            rs.beforeFirst();
            while (rs.next()) {
                mids.add(rs.getInt(1));
            }
        } catch (SQLException e) {
            System.err.println(e);
        } finally {
            Utils.finishSQL(rs, stmt);
        }
        return mids;
    }

    public static ArrayList<Integer> getMyFeed(Connection sql, int uid, int before) {
        ArrayList<Integer> mids = new ArrayList<Integer>(40);
        PreparedStatement stmt = null;
        ResultSet rs = null;
        try {
            if (before > 0) {
                stmt = sql.prepareStatement("SELECT message_id FROM messages INNER JOIN subscr_users ON (subscr_users.suser_id=? AND subscr_users.user_id=messages.user_id) WHERE message_id<? AND (privacy>=0 OR (privacy>=-2 AND privacy<=-1 AND messages.user_id IN (SELECT user_id FROM wl_users WHERE wl_user_id=?))) ORDER BY message_id DESC LIMIT 20");
                stmt.setInt(1, uid);
                stmt.setInt(2, before);
                stmt.setInt(3, uid);
            } else {
                stmt = sql.prepareStatement("SELECT message_id FROM messages INNER JOIN subscr_users ON (subscr_users.suser_id=? AND subscr_users.user_id=messages.user_id) WHERE (privacy>=0 OR (privacy>=-2 AND privacy<=-1 AND messages.user_id IN (SELECT user_id FROM wl_users WHERE wl_user_id=?))) ORDER BY message_id DESC LIMIT 20");
                stmt.setInt(1, uid);
                stmt.setInt(2, uid);
            }
            rs = stmt.executeQuery();
            rs.beforeFirst();
            while (rs.next()) {
                mids.add(rs.getInt(1));
            }
        } catch (SQLException e) {
            System.err.println(e);
        } finally {
            Utils.finishSQL(rs, stmt);
        }

        try {
            if (before > 0) {
                stmt = sql.prepareStatement("SELECT message_id FROM messages WHERE user_id=? AND message_id<? ORDER BY message_id DESC LIMIT 20");
                stmt.setInt(1, uid);
                stmt.setInt(2, before);
            } else {
                stmt = sql.prepareStatement("SELECT message_id FROM messages WHERE user_id=? ORDER BY message_id DESC LIMIT 20");
                stmt.setInt(1, uid);
            }
            rs = stmt.executeQuery();
            rs.beforeFirst();
            while (rs.next()) {
                mids.add(rs.getInt(1));
            }
        } catch (SQLException e) {
            System.err.println(e);
        } finally {
            Utils.finishSQL(rs, stmt);
        }

        Collections.sort(mids, Collections.reverseOrder());
        int remove = mids.size() - 20;
        for (int i = 0; i < remove; i++) {
            mids.remove(20);
        }

        return mids;
    }

    public static ArrayList<Integer> getPrivate(Connection sql, int uid, int before) {
        ArrayList<Integer> mids = new ArrayList<Integer>(20);

        PreparedStatement stmt = null;
        ResultSet rs = null;
        try {
            if (before > 0) {
                stmt = sql.prepareStatement("SELECT message_id FROM (SELECT message_id FROM messages_access WHERE user_id=? AND message_id<? UNION SELECT message_id FROM messages WHERE user_id=? AND privacy<-1 AND message_id<?) AS t ORDER BY message_id DESC LIMIT 20");
                stmt.setInt(1, uid);
                stmt.setInt(2, before);
                stmt.setInt(3, uid);
                stmt.setInt(4, before);
            } else {
                stmt = sql.prepareStatement("SELECT message_id FROM (SELECT message_id FROM messages_access WHERE user_id=? UNION SELECT message_id FROM messages WHERE user_id=? AND privacy<-1) AS t ORDER BY message_id DESC LIMIT 20");
                stmt.setInt(1, uid);
                stmt.setInt(2, uid);
            }
            rs = stmt.executeQuery();
            rs.beforeFirst();
            while (rs.next()) {
                mids.add(rs.getInt(1));
            }
        } catch (SQLException e) {
            System.err.println(e);
        } finally {
            Utils.finishSQL(rs, stmt);
        }
        return mids;
    }

    public static ArrayList<Integer> getDiscussions(Connection sql, int uid, int before) {
        ArrayList<Integer> mids = new ArrayList<Integer>(20);

        PreparedStatement stmt = null;
        ResultSet rs = null;
        try {
            if (before > 0) {
                stmt = sql.prepareStatement("SELECT message_id FROM subscr_messages WHERE suser_id=? AND message_id<? ORDER BY message_id DESC LIMIT 20");
                stmt.setInt(1, uid);
                stmt.setInt(2, before);
            } else {
                stmt = sql.prepareStatement("SELECT message_id FROM subscr_messages WHERE suser_id=? ORDER BY message_id DESC LIMIT 20");
                stmt.setInt(1, uid);
            }
            rs = stmt.executeQuery();
            rs.beforeFirst();
            while (rs.next()) {
                mids.add(rs.getInt(1));
            }
        } catch (SQLException e) {
            System.err.println(e);
        } finally {
            Utils.finishSQL(rs, stmt);
        }

        return mids;
    }

    public static ArrayList<Integer> getRecommended(Connection sql, int uid, int before) {
        ArrayList<Integer> mids = new ArrayList<Integer>(20);

        PreparedStatement stmt = null;
        ResultSet rs = null;
        try {
            if (before > 0) {
                stmt = sql.prepareStatement("SELECT message_id FROM favorites WHERE user_id IN (SELECT user_id FROM subscr_users WHERE suser_id=?) AND message_id<? ORDER BY message_id DESC LIMIT 20");
                stmt.setInt(1, uid);
                stmt.setInt(2, before);
            } else {
                stmt = sql.prepareStatement("SELECT message_id FROM favorites WHERE user_id IN (SELECT user_id FROM subscr_users WHERE suser_id=?) ORDER BY message_id DESC LIMIT 20");
                stmt.setInt(1, uid);
            }
            rs = stmt.executeQuery();
            rs.beforeFirst();
            while (rs.next()) {
                mids.add(rs.getInt(1));
            }
        } catch (SQLException e) {
            System.err.println(e);
        } finally {
            Utils.finishSQL(rs, stmt);
        }


        return mids;
    }

    public static ArrayList<Integer> getPopular(Connection sql, int before) {
        ArrayList<Integer> mids = new ArrayList<Integer>(20);

        PreparedStatement stmt = null;
        ResultSet rs = null;
        try {
            if (before > 0) {
                stmt = sql.prepareStatement("SELECT message_id FROM messages WHERE message_id<? AND privacy>0 AND popular=1 ORDER BY message_id DESC LIMIT 20");
                stmt.setInt(1, before);
            } else {
                stmt = sql.prepareStatement("SELECT message_id FROM messages WHERE privacy>0 AND popular=1 ORDER BY message_id DESC LIMIT 20");
            }
            rs = stmt.executeQuery();
            rs.beforeFirst();
            while (rs.next()) {
                mids.add(rs.getInt(1));
            }
        } catch (SQLException e) {
            System.err.println(e);
        } finally {
            Utils.finishSQL(rs, stmt);
        }
        return mids;
    }

    public static ArrayList<Integer> getPhotos(Connection sql, int visitor_uid, int before) {
        ArrayList<Integer> mids = new ArrayList<Integer>(20);

        PreparedStatement stmt = null;
        ResultSet rs = null;
        try {
            if (before > 0) {
                stmt = sql.prepareStatement("SELECT message_id FROM messages WHERE message_id<? AND (privacy>0 OR user_id=?) AND attach IS NOT NULL ORDER BY message_id DESC LIMIT 20");
                stmt.setInt(1, before);
                stmt.setInt(2, visitor_uid);
            } else {
                stmt = sql.prepareStatement("SELECT message_id FROM messages WHERE (privacy>0 OR user_id=?) AND attach IS NOT NULL ORDER BY message_id DESC LIMIT 20");
                stmt.setInt(1, visitor_uid);
            }
            rs = stmt.executeQuery();
            rs.beforeFirst();
            while (rs.next()) {
                mids.add(rs.getInt(1));
            }
        } catch (SQLException e) {
            System.err.println(e);
        } finally {
            Utils.finishSQL(rs, stmt);
        }
        return mids;
    }

    public static ArrayList<Integer> getSearch(Connection sql, Connection sqlSearch, String search, int before) {
        ArrayList<Integer> mids0 = new ArrayList<Integer>(20);

        PreparedStatement stmt = null;
        ResultSet rs = null;
        try {
            if (before > 0) {
                stmt = sqlSearch.prepareStatement("SELECT id AS message_id FROM messages WHERE MATCH(?) AND id<? ORDER BY id DESC LIMIT 25");
                stmt.setString(1, search);
                stmt.setInt(2, before);
            } else {
                stmt = sqlSearch.prepareStatement("SELECT id AS message_id FROM messages WHERE MATCH(?) ORDER BY id DESC LIMIT 25");
                stmt.setString(1, search);
            }
            rs = stmt.executeQuery();
            rs.beforeFirst();
            while (rs.next()) {
                mids0.add(rs.getInt(1));
            }
        } catch (SQLException e) {
            System.err.println(e);
        } finally {
            Utils.finishSQL(rs, stmt);
        }

        ArrayList<Integer> mids = new ArrayList<Integer>(20);
        if (mids0.size() > 0) {
            try {
                stmt = sql.prepareStatement("SELECT message_id FROM messages WHERE message_id IN (" + Utils.convertArrayInt2String(mids0) + ") AND privacy>0 ORDER BY message_id DESC LIMIT 20");
                rs = stmt.executeQuery();
                rs.beforeFirst();
                while (rs.next()) {
                    mids.add(rs.getInt(1));
                }
            } catch (SQLException e) {
                System.err.println(e);
            } finally {
                Utils.finishSQL(rs, stmt);
            }
        }

        return mids;
    }

    public static ArrayList<Integer> getUserBlog(Connection sql, int UID, int privacy, int before) {
        ArrayList<Integer> mids = new ArrayList<Integer>(20);

        PreparedStatement stmt = null;
        ResultSet rs = null;
        try {
            if (before > 0) {
                stmt = sql.prepareStatement("SELECT message_id FROM messages WHERE user_id=? AND message_id<? AND privacy>=" + privacy + " ORDER BY message_id DESC LIMIT 20");
                stmt.setInt(1, UID);
                stmt.setInt(2, before);
            } else {
                stmt = sql.prepareStatement("SELECT message_id FROM messages WHERE user_id=? AND privacy>=" + privacy + " ORDER BY message_id DESC LIMIT 20");
                stmt.setInt(1, UID);
            }
            rs = stmt.executeQuery();
            rs.beforeFirst();
            while (rs.next()) {
                mids.add(rs.getInt(1));
            }
        } catch (SQLException e) {
            System.err.println(e);
        } finally {
            Utils.finishSQL(rs, stmt);
        }
        return mids;
    }

    public static ArrayList<Integer> getUserTag(Connection sql, int UID, int TID, int privacy, int before) {
        ArrayList<Integer> mids = new ArrayList<Integer>(20);

        PreparedStatement stmt = null;
        ResultSet rs = null;
        try {
            if (before > 0) {
                stmt = sql.prepareStatement("SELECT messages.message_id FROM messages_tags INNER JOIN messages USING(message_id) WHERE messages.user_id=? AND messages_tags.tag_id=? AND messages.message_id<? AND messages.privacy>=" + privacy + " ORDER BY messages.message_id DESC LIMIT 20");
                stmt.setInt(1, UID);
                stmt.setInt(2, TID);
                stmt.setInt(3, before);
            } else {
                stmt = sql.prepareStatement("SELECT messages.message_id FROM messages_tags INNER JOIN messages USING(message_id) WHERE messages.user_id=? AND messages_tags.tag_id=? AND messages.privacy>=" + privacy + " ORDER BY messages.message_id DESC LIMIT 20");
                stmt.setInt(1, UID);
                stmt.setInt(2, TID);
            }
            rs = stmt.executeQuery();
            rs.beforeFirst();
            while (rs.next()) {
                mids.add(rs.getInt(1));
            }
        } catch (SQLException e) {
            System.err.println(e);
        } finally {
            Utils.finishSQL(rs, stmt);
        }
        return mids;
    }

    public static ArrayList<Integer> getUserRecommendations(Connection sql, int UID, int before) {
        ArrayList<Integer> mids = new ArrayList<Integer>(20);

        PreparedStatement stmt = null;
        ResultSet rs = null;
        try {
            if (before > 0) {
                stmt = sql.prepareStatement("SELECT message_id FROM favorites WHERE user_id=? AND message_id<? ORDER BY message_id DESC LIMIT 20");
                stmt.setInt(1, UID);
                stmt.setInt(2, before);
            } else {
                stmt = sql.prepareStatement("SELECT message_id FROM favorites WHERE user_id=? ORDER BY message_id DESC LIMIT 20");
                stmt.setInt(1, UID);
            }
            rs = stmt.executeQuery();
            rs.beforeFirst();
            while (rs.next()) {
                mids.add(rs.getInt(1));
            }
        } catch (SQLException e) {
            System.err.println(e);
        } finally {
            Utils.finishSQL(rs, stmt);
        }
        return mids;
    }

    public static ArrayList<Integer> getUserPhotos(Connection sql, int UID, int privacy, int before) {
        ArrayList<Integer> mids = new ArrayList<Integer>(20);

        PreparedStatement stmt = null;
        ResultSet rs = null;
        try {
            if (before > 0) {
                stmt = sql.prepareStatement("SELECT message_id FROM messages WHERE user_id=? AND message_id<? AND privacy>=" + privacy + " AND attach IS NOT NULL ORDER BY message_id DESC LIMIT 20");
                stmt.setInt(1, UID);
                stmt.setInt(2, before);
            } else {
                stmt = sql.prepareStatement("SELECT message_id FROM messages WHERE user_id=? AND privacy>=" + privacy + " AND attach IS NOT NULL ORDER BY message_id DESC LIMIT 20");
                stmt.setInt(1, UID);
            }
            rs = stmt.executeQuery();
            rs.beforeFirst();
            while (rs.next()) {
                mids.add(rs.getInt(1));
            }
        } catch (SQLException e) {
            System.err.println(e);
        } finally {
            Utils.finishSQL(rs, stmt);
        }
        return mids;
    }

    public static ArrayList<Integer> getUserSearch(Connection sql, Connection sqlSearch, int UID, String search, int privacy, int before) {
        ArrayList<Integer> mids0 = new ArrayList<Integer>(20);

        PreparedStatement stmt = null;
        ResultSet rs = null;
        try {
            if (before > 0) {
                stmt = sqlSearch.prepareStatement("SELECT id AS message_id FROM messages WHERE user_id=? AND MATCH(?) AND id<? ORDER BY id DESC LIMIT 20");
                stmt.setInt(1, UID);
                stmt.setString(2, search);
                stmt.setInt(3, before);
            } else {
                stmt = sqlSearch.prepareStatement("SELECT id AS message_id FROM messages WHERE user_id=? AND MATCH(?) ORDER BY id DESC LIMIT 20");
                stmt.setInt(1, UID);
                stmt.setString(2, search);
            }
            rs = stmt.executeQuery();
            rs.beforeFirst();
            while (rs.next()) {
                mids0.add(rs.getInt(1));
            }
        } catch (SQLException e) {
            System.err.println(e);
        } finally {
            Utils.finishSQL(rs, stmt);
        }

        ArrayList<Integer> mids = new ArrayList<Integer>(20);
        if (mids0.size() > 0) {
            try {
                stmt = sql.prepareStatement("SELECT message_id FROM messages WHERE message_id IN (" + Utils.convertArrayInt2String(mids0) + ") AND privacy>=" + privacy + " ORDER BY message_id DESC");
                rs = stmt.executeQuery();
                rs.beforeFirst();
                while (rs.next()) {
                    mids.add(rs.getInt(1));
                }
            } catch (SQLException e) {
                System.err.println(e);
            } finally {
                Utils.finishSQL(rs, stmt);
            }
        }

        return mids;
    }

    public static ArrayList<com.juick.Message> getMessages(Connection sql, ArrayList<Integer> mids) {
        ArrayList<com.juick.Message> msgs = new ArrayList<com.juick.Message>(20);

        PreparedStatement stmt = null;
        ResultSet rs = null;
        try {
            stmt = sql.prepareStatement("SELECT STRAIGHT_JOIN messages.message_id,messages.user_id,users.nick,messages_txt.tags,messages.readonly,messages.privacy,messages_txt.txt,TIMESTAMPDIFF(MINUTE,messages.ts,NOW()),DATE_FORMAT(messages.ts,'%Y-%m-%d %H:%i:%s'),messages.replies,messages_txt.repliesby,messages.attach,messages.lat,messages.lon,messages.votes FROM (messages INNER JOIN messages_txt ON messages.message_id=messages_txt.message_id) INNER JOIN users ON messages.user_id=users.id WHERE messages.message_id IN (" + Utils.convertArrayInt2String(mids) + ") ORDER BY messages.message_id DESC");
            rs = stmt.executeQuery();
            rs.beforeFirst();
            while (rs.next()) {
                com.juick.Message msg = new com.juick.Message();
                msg.User = new com.juick.User();

                msg.MID = rs.getInt(1);
                msg.User.UID = rs.getInt(2);
                msg.User.UName = rs.getString(3);
                if (rs.getString(4) != null) {
                    msg.parseTags(rs.getString(4));
                }
                msg.ReadOnly = rs.getInt(5) == 1;
                msg.Privacy = rs.getInt(6);
                msg.FriendsOnly = msg.Privacy < 0;
                msg.Text = rs.getString(7);
                msg.TimeAgo = rs.getInt(8);
                msg.TimestampString = rs.getString(9);
                msg.Replies = rs.getInt(10);
                msg.RepliesBy = rs.getString(11);
                msg.AttachmentType = rs.getString(12);
                if (rs.getDouble(13) != 0) {
                    msg.Place = new com.juick.Place();
                    msg.Place.lat = rs.getDouble(13);
                    msg.Place.lon = rs.getDouble(14);
                }
                msg.Votes = rs.getInt(15);

                msgs.add(msg);
            }
        } catch (SQLException e) {
            System.err.println(e);
        } finally {
            Utils.finishSQL(rs, stmt);
        }

        return msgs;
    }

    public static ArrayList<com.juick.Message> getReplies(Connection sql, int mid) {
        ArrayList<com.juick.Message> replies = new ArrayList<com.juick.Message>();

        PreparedStatement stmt = null;
        ResultSet rs = null;
        try {
            stmt = sql.prepareStatement("SELECT replies.reply_id,replies.replyto,replies.user_id,users.nick,replies.txt,TIMESTAMPDIFF(MINUTE,replies.ts,NOW()),DATE_FORMAT(replies.ts,'%Y-%m-%d %H:%i:%s'),replies.attach FROM replies INNER JOIN users ON replies.user_id=users.id WHERE replies.message_id=? ORDER BY replies.reply_id ASC");
            stmt.setInt(1, mid);
            rs = stmt.executeQuery();
            rs.beforeFirst();
            while (rs.next()) {
                com.juick.Message msg = new com.juick.Message();
                msg.MID = mid;
                msg.RID = rs.getInt(1);
                msg.ReplyTo = rs.getInt(2);
                msg.User = new com.juick.User();
                msg.User.UID = rs.getInt(3);
                msg.User.UName = rs.getString(4);
                msg.Text = rs.getString(5);
                msg.TimeAgo = rs.getInt(6);
                msg.TimestampString = rs.getString(7);
                msg.AttachmentType = rs.getString(8);

                replies.add(msg);
            }
        } catch (SQLException e) {
            System.err.println(e);
        } finally {
            Utils.finishSQL(rs, stmt);
        }

        return replies;
    }
}