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<?php |
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namespace Archivr\IndexMerger; |
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use Archivr\ConflictHandler\ConflictHandlerInterface; |
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use Archivr\ConflictHandler\PanickingConflictHandler; |
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use Archivr\Index; |
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use Archivr\IndexObject; |
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class StandardIndexMerger implements IndexMergerInterface |
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{ |
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/** |
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* @var ConflictHandlerInterface |
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*/ |
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protected $conflictHandler; |
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public function setConflictHandler(ConflictHandlerInterface $conflictHandler = null): IndexMergerInterface |
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{ |
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$this->conflictHandler = $conflictHandler; |
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return $this; |
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} |
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public function getConflictHandler(): ConflictHandlerInterface |
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{ |
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if ($this->conflictHandler === null) |
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{ |
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$this->setConflictHandler(new PanickingConflictHandler()); |
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} |
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return $this->conflictHandler; |
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} |
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public function merge(Index $localIndex, Index $lastLocalIndex = null, Index $remoteIndex = null): Index |
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{ |
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$mergedIndex = new Index(); |
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$conflictHandler = $this->getConflictHandler(); |
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// build new index from local index |
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foreach ($localIndex as $localObject) |
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{ |
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/** @var IndexObject $localObject */ |
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$remoteObject = $remoteIndex ? $remoteIndex->getObjectByPath($localObject->getRelativePath()) : null; |
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$localObjectModified = $lastLocalIndex ? ($localObject->getMtime() > $lastLocalIndex->getCreated()->getTimestamp()) : true; |
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if ($remoteObject === null) |
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{ |
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if ($localObjectModified) |
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{ |
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$mergedIndex->addObject($localObject); |
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} |
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elseif ($remoteIndex === null) |
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{ |
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$mergedIndex->addObject($localObject); |
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} |
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} |
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else |
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{ |
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$remoteObjectModified = $lastLocalIndex ? ($remoteObject->getMtime() > $lastLocalIndex->getCreated()->getTimestamp()) : false; |
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if (!$localObjectModified) |
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{ |
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$mergedIndex->addObject($remoteObject); |
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} |
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elseif (!$remoteObjectModified) |
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{ |
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$mergedIndex->addObject($localObject); |
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} |
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else |
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{ |
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$conflictHandler->handleConflict($remoteObject, $localObject, $lastLocalIndex ? $lastLocalIndex->getObjectByPath($localObject->getRelativePath()) : null); |
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} |
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} |
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} |
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if ($remoteIndex !== null) |
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{ |
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// add remote index content |
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foreach ($remoteIndex as $remoteObject) |
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{ |
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/** @var IndexObject $remoteObject */ |
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$localObject = $localIndex->getObjectByPath($remoteObject->getRelativePath()); |
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$lastLocalObject = $lastLocalIndex ? $lastLocalIndex->getObjectByPath($remoteObject->getRelativePath()) : null; |
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if ($localObject === null) |
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{ |
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if ($lastLocalObject === null) |
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{ |
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$mergedIndex->addObject($remoteObject); |
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} |
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} |
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} |
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} |
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return $mergedIndex; |
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} |
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} |
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storeman-io /
storeman
