<?php

class Lslib extends TikiLib {
	function Lslib($db) {
		if (!$db) {
			die ("Invalid db object passed to Lslib constructor");
		}

		$this->db = $db;
	}

	function set_operator_id($reqId, $senderId) {
		$query = "update `tiki_live_support_requests` set `operator_id` = ? where `reqId`=?";

		$this->query($query,array($senderId, $reqId));
	}

	function set_user_id($reqId, $senderId) {
		$query = "update `tiki_live_support_requests` set `user_id` = ? where `reqId`=?";

		$this->query($query,array( $senderId, $reqId));
	}

	function new_user_request($user, $tiki_user, $email, $reason) {
		$reqId = md5(uniqid('.'));

		$now = (int) date("U");
		$query = "insert into `tiki_live_support_requests`(`reqId`,`user`,`tiki_user`,`email`,`reason`,`req_timestamp`,`status`,`timestamp`,`operator`,`chat_started`,`chat_ended`,`operator_id`,`user_id`)
  	values(?,?,?,?,?,?,?,?,?,?,?,?,?)";
		$this->query($query,array($reqId,$user,$tiki_user,$email,$reason,$now,'active',$now,'',0,0,'',''));
		return $reqId;
	}

	function get_last_request() {
		$x = $this->getOne("select max(`timestamp`) from `tiki_live_support_requests`",array());

		if ($x)
			return $x;
		else
			return 0;
	}

	function get_max_active_request() {
		return $this->getOne("select max(`reqId`) from `tiki_live_support_requests` where `status`=?",array('active'));
	}

	// Remove active requests 
	function purge_requests() {
		$now = (int) date("U");

		$min = $now - 60 * 2; // 1 minute = timeout.
		$query = "update `tiki_live_support_requests` set `status`=? where `timestamp` < ?";
		$this->query($query,array('timeout',$min));
	}

	// Get status for request
	function get_request_status($reqId) {
		return $this->getOne("select `status` from `tiki_live_support_requests` where `reqId`=?",array($reqId));
	}

	function set_request_status($reqId, $status) {
		$query = "update `tiki_live_support_requests` set `status`=? where `reqId`=?";

		$this->query($query,array($status,$reqId));
	}

	// Get request information
	function get_request($reqId) {
		$query = "select * from `tiki_live_support_requests` where `reqId`=?";

		$result = $this->query($query,array($reqId));
		$res = $result->fetchRow();
		return $res;
	}

	/*
	  accepted_requests integer(10),
	  status varchar(20),
	  longest_chat integer(10),
	  shortest_chat integer(10),
	  average_chat integer(10),
	  last_chat integer(14),
	  time_online integer(10),
	  votes integer(10),
	  points integer(10),
	  status_since integer(14),
	  primary key(user)
	*/
	function set_operator_status($user, $status) {
		$now = (int) date("U");

		// If switching to offline then sum online time for this operator
		if ($status == 'offline') {
			$query
				= "update `tiki_live_support_operators` set `time_online` = ? - `status_since` where `user`=? and `status`=?";

			$this->query($query,array($now,$user,'online'));
		}

		$query = "update `tiki_live_support_operators` set `status`=?, `status_since`=? where `user`=?";
		$this->query($query,array($status,$now,$user));
	}

	function get_operator_status($user) {
		$status = $this->getOne("select `status` from `tiki_live_support_operators` where `user`=?",array($user));

		if (!$status)
			$status = 'offline';

		return $status;
	}

	// Accepts a request, change status to op_accepted
	function operator_accept($reqId, $user, $operator_id) {
		$now = (int) date("U");

		$query = "update `tiki_live_support_requests` set `operator_id`=?,operator=?,status=?,timestamp=?,chat_started=? where `reqId`=?";
		$this->query($query,array($operator_id,$user,'op_accepted',$now,$now,$reqId));
		$query = "update `tiki_live_support_operators` set `accepted_requests` = `accepted_requests` + 1 where `user`=?";
		$this->query($query,array($user));
	}

	function user_close_request($reqId) {
		if (!$reqId)
			return;

		$now = (int) date("U");
		$query = "update `tiki_live_support_requests` set `status`=?,timestamp=?,chat_ended=? where `reqId`=?";
		$this->query($query,array('user closed',$now,$now,$reqId));
	}

	function operator_close_request($reqId) {
		if (!$reqId)
			return;

		$now = (int) date("U");
		$query
			= "update `tiki_live_support_requests` set `status`=?,timestamp=?,chat_ended=? where `reqId`=?";
		$this->query($query,array('operator closed',$now,$now,$reqId));
	}

	function get_requests($status) {
		$this->purge_requests();

		$query = "select * from `tiki_live_support_requests` where `status`=?";
		$result = $this->query($query,array($status));
		$ret = array();

		while ($res = $result->fetchRow()) {
			$ret[] = $res;
		}

		return $ret;
	}

	//EVENT HANDLING
	function get_new_events($reqId, $senderId, $last) {
		$query = "select * from `tiki_live_support_events` where `senderId`=? and reqId=? and `eventId`>?";

		$result = $this->query($query,array($senderId,$reqId,$last));
		$ret = '';
		$ret = '<?xml version="1.0" ?>';
		$ret .= '<events>';

		while ($res = $result->fetchRow()) {
			$ret .= '<event>' . '<data>' . $res['data'] . '</data></event>';
		}

		$ret .= '</events>';
		return $ret;
	}

	function get_last_event($reqId, $senderId) {
		return $this->getOne("select max(`seqId`) from `tiki_live_support_events` where `senderId`<>? and reqId=?",array($senderId,$reqId));
	}

	function get_event($reqId, $event, $senderId) {
		return $this->getOne(
			"select `data` from `tiki_live_support_events` where `senderId`<>? and `reqId`=? and `seqId`=?",array($senderId,$reqId,$event));
	}

	function put_message($reqId, $msg, $senderId) {
		$now = (int) date("U");

		$seq = $this->getOne("select max(`seqId`) from `tiki_live_support_events` where `reqId`=?",array($reqId));

		if (!$seq)
			$seq = 0;

		$seq++;
		$query = "insert into `tiki_live_support_events`(`seqId`,`reqId`,`type`,`senderId`,`data`,`timestamp`)
  	values(?,?,?,?,?,?)";
		$this->query($query,array($seq,$reqId,'msg',$senderId,$msg,$now));
	}

	function operators_online() {
		return $this->getOne("select count(*) from `tiki_live_support_operators` where `status`=?",array('online'));
	}
}
global $dbTiki;
$lslib = new Lslib($dbTiki);

?>
