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<?php
/**
* ownCloud - Documents App
*
* @author Victor Dubiniuk
* @copyright 2013 Victor Dubiniuk victor.dubiniuk@gmail.com
*
* This file is licensed under the Affero General Public License version 3 or
* later.
*/
namespace OCA\Documents\Db;
class Op extends \OCA\Documents\Db {
const DB_TABLE = '`*PREFIX*documents_op`';
protected $tableName = '`*PREFIX*documents_op`';
protected $insertStatement = 'INSERT INTO `*PREFIX*documents_op` (`es_id`, `optype`, `member`, `opspec`) VALUES (?, ?, ?, ?)';
public static function addOpsArray($esId, $memberId, $ops){
$opObj = new Op();
foreach ($ops as $op) {
if (!$opObj->canInsertOp($esId, $memberId, $op)){
continue;
}
$opObj->setData(array(
$esId,
$op['optype'],
$memberId,
json_encode($op)
));
$opObj->insert();
}
return $opObj->getHeadSeq($esId);
}
/**
* @returns "" when there are no Ops, or the seq of the last Op
*/
public function getHeadSeq($esId){
$query = \OC::$server->getDatabaseConnection()->prepare('
SELECT `seq`
FROM ' . $this->tableName . '
WHERE `es_id`=?
ORDER BY `seq` DESC
', 1);
$result = $query->execute([$esId]);
return !$result ? "" : $query->fetchColumn();
}
public function getOpsAfterJson($esId, $seq){
$ops = $this->getOpsAfter($esId, $seq);
if (!is_array($ops)){
$ops = array();
}
$ops = array_map(
function($x){
$decoded = json_decode($x['opspec'], true);
$decoded['memberid'] = strval($decoded['memberid']);
return $decoded;
},
$ops
);
return $ops;
}
public function getOpsAfter($esId, $seq){
if ($seq == ""){
$seq = -1;
}
$query = \OC::$server->getDatabaseConnection()->prepare('
SELECT `opspec`
FROM ' . self::DB_TABLE . '
WHERE `es_id`=?
AND `seq`>?
ORDER BY `seq` ASC
');
$query->execute(array($esId, $seq));
return $query->fetchAll();
}
public function addMember($esId, $memberId, $fullName, $userId, $color, $imageUrl){
$op = array(
'optype' => 'AddMember',
'memberid' => (string) $memberId,
'timestamp' => $this->getMillisecondsAsString(),
'setProperties' => array(
'fullName' => $fullName,
'color' => $color,
'imageUrl' => $imageUrl,
'uid' => $userId,
)
);
$this->insertOp($esId, $memberId, $op);
}
public function removeCursor($esId, $memberId){
$op = array(
'optype' => 'RemoveCursor',
'memberid' => (string) $memberId,
'reason' => 'server-idle',
'timestamp' => $this->getMillisecondsAsString()
);
$this->insertOp($esId, $memberId, $op);
}
public function removeMember($esId, $memberId){
$op = array(
'optype' => 'RemoveMember',
'memberid' => (string) $memberId,
'timestamp' => $this->getMillisecondsAsString()
);
$this->insertOp($esId, $memberId, $op);
}
//TODO: Implement https://github.com/kogmbh/WebODF/blob/master/webodf/lib/ops/OpUpdateMember.js#L95
public function changeNick($esId, $memberId, $fullName){
$op = array(
'optype' => 'UpdateMember',
'memberid' => (string) $memberId,
'timestamp' => $this->getMillisecondsAsString(),
'setProperties' => array(
'fullName' => $fullName,
)
);
$this->insertOp($esId, $memberId, $op);
}
protected function insertOp($esId, $memberId, $op){
if ($this->canInsertOp($esId, $memberId, $op)){
$op = new Op(array(
$esId,
$op['optype'],
$memberId,
json_encode($op)
));
$op->insert();
}
}
protected function canInsertOp($esId, $memberId, $op){
$cursorOps = array('AddCursor', 'RemoveCursor');
$memberOps = array('AddMember', 'RemoveMember');
$result = true;
switch ($op['optype']){
case 'AddCursor':
$ops = $this->getFilteredMemberOps($esId, $memberId, $cursorOps);
$result = !count($ops) || $ops[0]['optype'] === 'RemoveCursor';
break;
case 'RemoveCursor':
$ops = $this->getFilteredMemberOps($esId, $memberId, $cursorOps);
$result = count($ops) && $ops[0]['optype'] === 'AddCursor';
break;
case 'AddMember':
$ops = $this->getFilteredMemberOps($esId, $memberId, $memberOps);
$result = !count($ops) || $ops[0]['optype'] === 'RemoveMember';
break;
case 'RemoveMember':
$ops = $this->getFilteredMemberOps($esId, $memberId, $memberOps);
$result = count($ops) && $ops[0]['optype'] === 'AddMember';
break;
}
return $result;
}
protected function getFilteredMemberOps($esId, $memberId, $targetOps){
$stmt = $this->buildInQuery('optype', $targetOps);
$result = $this->execute('
SELECT `optype` FROM ' . $this->tableName . '
WHERE es_id=? AND member=? AND ' . $stmt . 'ORDER BY `seq` DESC',
array_merge(array($esId, $memberId), $targetOps)
);
$ops = $result->fetchAll();
if (!is_array($ops)){
$ops = array();
}
return $ops;
}
protected function getMillisecondsAsString(){
$microtime = microtime();
list($usec, $sec) = explode(" ", $microtime);
$milliseconds = $sec.substr($usec, 2, 3);
return $milliseconds;
}
}
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