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