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feat: Representation of changed resources #1
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,117 @@ | ||
| <?php | ||
|
|
||
| namespace DataAccounting; | ||
|
|
||
| use DataAccounting\Content\TransclusionHashes; | ||
| use File; | ||
| use MediaWiki\Linker\LinkTarget; | ||
| use MediaWiki\Page\PageReference; | ||
| use MediaWiki\Revision\RevisionRecord; | ||
| use TitleFactory; | ||
|
|
||
| class TransclusionManager { | ||
| public const STATE_NEW_VERSION = 'new-version'; | ||
| public const STATE_HASH_CHANGED = 'hash-changed'; | ||
| public const STATE_UNCHANGED = 'unchanged'; | ||
|
|
||
| /** @var TitleFactory */ | ||
| private $titleFactory; | ||
| /** @var HashLookup */ | ||
| private $hashLookup; | ||
|
|
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| public function __construct( TitleFactory $titleFactory, HashLookup $hashLookup ) { | ||
| $this->titleFactory = $titleFactory; | ||
| $this->hashLookup = $hashLookup; | ||
| } | ||
|
|
||
| public function getTransclusionState( RevisionRecord $revision ) { | ||
| $states = []; | ||
| $transclusions = $this->getTransclusionHashes( $revision ); | ||
| foreach ( $transclusions as $transclusion ) { | ||
| $title = $this->titleFactory->makeTitle( $transclusion->ns, $transclusion->dbkey ); | ||
| $latestHash = $this->hashLookup->getLatestHashForTitle( $title ); | ||
| if ( $transclusion->hash !== null ) { | ||
| $hashExists = $this->hashLookup->getRevisionForHash( $transclusion->hash ) !== null; | ||
| if ( !$hashExists ) { | ||
| $states[$title->getPrefixedDBkey()] = [ | ||
| 'state' => static::STATE_HASH_CHANGED, | ||
| 'hash' => $transclusion->hash, | ||
| 'new_hash' => $this->hashLookup->getHashForRevision( $revision ), | ||
| ]; | ||
| continue; | ||
| } | ||
| } | ||
|
|
||
| if ( $latestHash !== $transclusion->hash ) { | ||
| $states[$title->getPrefixedDBkey()] = [ | ||
| 'state' => static::STATE_NEW_VERSION, | ||
| 'hash' => $transclusion->hash, | ||
| 'new_hash' => $latestHash | ||
| ]; | ||
| continue; | ||
| } | ||
| $states[$title->getPrefixedDBkey()] = [ | ||
| 'state' => static::STATE_UNCHANGED, | ||
| 'hash' => $transclusion->hash | ||
| ]; | ||
| } | ||
|
|
||
| return $states; | ||
| } | ||
|
|
||
| /** | ||
| * @param RevisionRecord $revision | ||
| * @return array | ||
| */ | ||
| public function getTransclusionHashes( RevisionRecord $revision ): array { | ||
| $content = $revision->getContent( TransclusionHashes::SLOT_ROLE_TRANSCLUSION_HASHES ); | ||
| if ( !$content instanceof TransclusionHashes ) { | ||
| return []; | ||
| } | ||
| return $content->getResourceHashes(); | ||
| } | ||
|
|
||
| /** | ||
| * @param array $hashes | ||
| * @param LinkTarget|PageReference $title | ||
| * @return string|null | ||
| */ | ||
| public function getHashForTitle( array $hashes, $title ): ?string { | ||
| foreach ( $hashes as $hashEntity ) { | ||
| if ( $title->getNamespace() === $hashEntity->ns && $title->getDBkey() === $hashEntity->dbkey ) { | ||
| return $hashEntity->hash; | ||
| } | ||
| } | ||
|
|
||
| return null; | ||
| } | ||
|
|
||
| /** | ||
| * @param string $hash | ||
| * @param File $file | ||
| * @return File|null | ||
| */ | ||
| public function getFileForHash( string $hash, File $file ): ?File { | ||
| $revision = $this->hashLookup->getRevisionForHash( $hash ); | ||
| if ( !$revision ) { | ||
| return null; | ||
| } | ||
| if ( $revision->isCurrent() ) { | ||
| return $file; | ||
| } | ||
| $oldFiles = $file->getHistory(); | ||
| foreach( $oldFiles as $oldFile ) { | ||
| if ( $oldFile->getTimestamp() === $revision->getTimestamp() ) { | ||
| return $oldFile; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * @param string $hash | ||
| * @return RevisionRecord|null | ||
| */ | ||
| public function getRevisionForHash( string $hash ): ?RevisionRecord { | ||
| return $this->hashLookup->getRevisionForHash( $hash ); | ||
| } | ||
| } |