<?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();

		}

	}

}



?>