<?php

/*
    [UCenter] (C)2001-2008 Comsenz Inc.
    This is NOT a freeware, use is subject to license terms

    $Id: friend.php 12126 2008-01-11 09:40:32Z heyond $
*/

!defined('IN_UC') && exit('Access Denied');

class friendmodel {

    var $db;
    var $base;

    function friendmodel(&$base) {
        $this->base = $base;
        $this->db = $base->db;
    }

    function add($uid, $friendid, $comment='') {
        $direction = $this->db->result_first("SELECT direction FROM ".UC_DBTABLEPRE."friends WHERE uid='$friendid' AND friendid='$uid' LIMIT 1");
        if($direction == 1) {
            $this->db->query("INSERT INTO ".UC_DBTABLEPRE."friends SET uid='$uid', friendid='$friendid', comment='$comment', direction='3'", 'SILENT');
            $this->db->query("UPDATE ".UC_DBTABLEPRE."friends SET direction='3' WHERE uid='$friendid' AND friendid='$uid'");
            return 1;
        } elseif($direction == 2) {
            return 1;
        } elseif($direction == 3) {
            return -1;
        } else {
            $this->db->query("INSERT INTO ".UC_DBTABLEPRE."friends SET uid='$uid', friendid='$friendid', comment='$comment', direction='1'", 'SILENT');
            return $this->db->insert_id();
        }
    }

    function delete($uid, $friendids) {
        $friendids = $this->base->implode($friendids);
        $this->db->query("DELETE FROM ".UC_DBTABLEPRE."friends WHERE uid='$uid' AND friendid IN ($friendids)");
        $affectedrows = $this->db->affected_rows();
        if($affectedrows > 0) {
            $this->db->query("UPDATE ".UC_DBTABLEPRE."friends SET direction=1 WHERE uid IN ($friendids) AND friendid='$uid' AND direction='3'");
        }
        return $affectedrows;
    }

    function get_totalnum_by_uid($uid, $direction = 0) {
        $sqladd = '';
        if($direction == 0) {
            $sqladd = "uid='$uid'";
        } elseif($direction == 1) {
            $sqladd = "uid='$uid' AND direction='1'";
        } elseif($direction == 2) {
            $sqladd = "friendid='$uid' AND direction='1'";
        } elseif($direction == 3) {
            $sqladd = "uid='$uid' AND direction='3'";
        }
        $totalnum = $this->db->result_first("SELECT COUNT(*) FROM ".UC_DBTABLEPRE."friends WHERE $sqladd");
        return $totalnum;
    }

    function get_list($uid, $page, $pagesize, $totalnum, $direction = 0) {
        $start = $this->base->page_get_start($page, $pagesize, $totalnum);
        $sqladd = '';
        if($direction == 0) {
            $sqladd = "f.uid='$uid'";
        } elseif($direction == 1) {
            $sqladd = "f.uid='$uid' AND f.direction='1'";
        } elseif($direction == 2) {
            $sqladd = "f.friendid='$uid' AND f.direction='1'";
        } elseif($direction == 3) {
            $sqladd = "f.uid='$uid' AND f.direction='3'";
        }
        if($sqladd) {
            $data = $this->db->fetch_all("SELECT f.*, m.username FROM ".UC_DBTABLEPRE."friends f LEFT JOIN ".UC_DBTABLEPRE."members m ON f.friendid=m.uid WHERE $sqladd LIMIT $start, $pagesize");
            return $data;
        } else {
            return array();
        }
    }
}

?>