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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.server;

import com.juick.User;
import org.springframework.dao.EmptyResultDataAccessException;
import org.springframework.jdbc.core.JdbcTemplate;

import java.util.List;

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

    public static boolean createPM(JdbcTemplate sql, int uid_from, int uid_to, String body) {
        boolean ret = sql.update("INSERT INTO pm(user_id,user_id_to,txt) VALUES (?,?,?)",
                uid_from, uid_to, body) > 0;

        if (ret) {
            sql.update("INSERT INTO pm_streams(user_id,user_id_to,lastmessage,unread) "
                    + "VALUES (?,?,NOW(),1) "
                    + "ON DUPLICATE KEY UPDATE lastmessage=NOW(),unread=unread+1",
                    uid_from, uid_to);
        }
        return ret;
    }

    public static boolean addPMinRoster(JdbcTemplate sql, int uid, String jid) {
        return sql.update("INSERT INTO pm_inroster(user_id,jid) VALUES (?,?)",
                uid, jid) > 0;
    }

    public static boolean removePMinRoster(JdbcTemplate sql, int uid, String jid) {
        return sql.update("DELETE FROM pm_inroster WHERE user_id=? AND jid=?", uid, jid) > 0;
    }

    public static boolean havePMinRoster(JdbcTemplate sql, int uid, String jid) {
        List<Integer> res = sql.queryForList("SELECT 1 FROM pm_inroster "
                + "WHERE user_id=? AND jid=?", Integer.class,
                uid, jid);
            return res.size() > 0;        
    }

    public static String getLastView(JdbcTemplate sql, int uid_from, int uid_to) {
        try {
            return sql.queryForObject("SELECT lastview FROM pm_streams WHERE user_id=? AND user_id_to=?", String.class,
                    uid_from, uid_to);
        } catch (EmptyResultDataAccessException e) {
            return null;
        }
    }

    public static List<User> getPMLastConversationsUsers(JdbcTemplate sql, int uid, int cnt) {
        List<User> qusers = sql.query("SELECT user_id,unread FROM pm_streams "
                + "WHERE user_id_to=? "
                + "ORDER BY unread DESC, lastmessage DESC LIMIT " + cnt, (rs, rowNum) -> {
            com.juick.User u = new com.juick.User();
            u.setUID(rs.getInt(1));
            u.MessagesCount = rs.getInt(2);
            return u;
        }, uid);
        if (!qusers.isEmpty()) {
            UserQueries.fillUsersByID(sql, qusers);
        }

        return qusers;
    }

    public static boolean haveUserInArray(List<com.juick.User> arr, int uid) {
        for (User user : arr) {
            if (user.getUID() == uid) {
                return true;
            }
        }
        return false;
    }

    public static List<com.juick.Message> getPMMessages(JdbcTemplate sql, int uid, int uid_to) {
        List<com.juick.Message> msgs = sql.query("SELECT user_id,txt,ts FROM pm "
                + "WHERE (user_id=? AND user_id_to=?) "
                + "OR (user_id_to=? AND user_id=?) ORDER BY ts DESC LIMIT 20",
                (rs, rowNum) -> {
                    com.juick.Message msg = new com.juick.Message();
                    int uuid = rs.getInt(1);
                    msg.setUser(new User());
                    msg.getUser().setUID(uuid);
                    msg.setText(rs.getString(2));
                    msg.setDate(rs.getTimestamp(3));
                    return msg;
                }, uid, uid_to, uid, uid_to);

        sql.update("UPDATE pm_streams SET lastview=NOW(),unread=0 "
                + "WHERE user_id_to=? AND user_id=?", uid, uid_to);

        return msgs;
    }

    public static List<com.juick.Message> getLastPMInbox(JdbcTemplate sql, int uid) {
        return sql.query("SELECT pm.user_id,users.nick,pm.txt,TIMESTAMPDIFF(MINUTE,pm.ts,NOW()),pm.ts " +
                        "FROM pm INNER JOIN users ON pm.user_id=users.id WHERE pm.user_id_to=? ORDER BY pm.ts DESC LIMIT 20",
                (rs, num) -> {
                    com.juick.Message msg = new com.juick.Message();
                    msg.setUser(new User());
                    msg.getUser().setUID(rs.getInt(1));
                    msg.getUser().setUName(rs.getString(2));
                    msg.setText(rs.getString(3));
                    msg.TimeAgo = rs.getInt(4);
                    msg.setDate(rs.getTimestamp(5));
                    return msg;
                }, uid);
    }

    public static List<com.juick.Message> getLastPMSent(JdbcTemplate sql, int uid) {
        return sql.query("SELECT pm.user_id_to,users.nick,pm.txt,TIMESTAMPDIFF(MINUTE,pm.ts,NOW())," +
                        "pm.ts FROM pm INNER JOIN users ON pm.user_id_to=users.id " +
                        "WHERE pm.user_id=? ORDER BY pm.ts DESC LIMIT 20",
                (rs, num) -> {
                    com.juick.Message msg = new com.juick.Message();
                    msg.setUser(new User());
                    msg.getUser().setUID(rs.getInt(1));
                    msg.getUser().setUName(rs.getString(2));
                    msg.setText(rs.getString(3));
                    msg.TimeAgo = rs.getInt(4);
                    msg.setDate(rs.getTimestamp(5));
                    return msg;
                }, uid);
    }
}