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| <?php | |
| namespace EntitySchema\MediaWiki\Actions; | |
| use Diff\DiffOp\Diff\Diff; | |
| use DomainException; | |
| use MediaWiki\MediaWikiServices; | |
| use MediaWiki\Revision\SlotRecord; | |
| use Status; | |
| use ViewAction; | |
| use WebRequest; | |
| use EntitySchema\MediaWiki\Content\EntitySchemaContent; | |
| use EntitySchema\MediaWiki\UndoHandler; | |
| /** | |
| * @license GPL-2.0-or-later | |
| */ | |
| abstract class AbstractUndoAction extends ViewAction { | |
| public function getRestriction() { | |
| return $this->getName(); | |
| } | |
| protected function getDiffFromRequest( WebRequest $req ): Status { | |
| $revStore = MediaWikiServices::getInstance()->getRevisionStore(); | |
| $newerRevision = $revStore->getRevisionById( $req->getInt( 'undo' ) ); | |
| $olderRevision = $revStore->getRevisionById( $req->getInt( 'undoafter' ) ); | |
| if ( $newerRevision === null || $olderRevision === null ) { | |
| return Status::newFatal( 'entityschema-undo-bad-revisions' ); | |
| } | |
| /** @var EntitySchemaContent $undoFromContent */ | |
| $undoFromContent = $newerRevision->getContent( SlotRecord::MAIN ); | |
| /** @var EntitySchemaContent $undoToContent */ | |
| $undoToContent = $olderRevision->getContent( SlotRecord::MAIN ); | |
| $undoHandler = new UndoHandler(); | |
| try { | |
| $undoHandler->validateContentIds( $undoFromContent, $undoToContent ); | |
| } catch ( DomainException $e ) { | |
| return Status::newFatal( 'entityschema-error-inconsistent-id' ); | |
| } | |
| return $undoHandler->getDiffFromContents( $undoFromContent, $undoToContent ); | |
| } | |
| /** | |
| * Try applying the diff to the latest revision of this page. | |
| * | |
| * @param Diff $diff | |
| * | |
| * @return Status contains array of the patched schema data and the revision that was patched | |
| */ | |
| protected function tryPatching( Diff $diff ): Status { | |
| $revStore = MediaWikiServices::getInstance()->getRevisionStore(); | |
| $baseRevId = $this->getTitle()->getLatestRevID(); | |
| /** @var EntitySchemaContent $baseContent */ | |
| $baseContent = $revStore | |
| ->getRevisionById( $baseRevId ) | |
| ->getContent( SlotRecord::MAIN ); | |
| $undoHandler = new UndoHandler(); | |
| $status = $undoHandler->tryPatching( $diff, $baseContent ); | |
| if ( $status->isGood() ) { | |
| return Status::newGood( [ $status->getValue(), $baseRevId ] ); | |
| } | |
| return $status; | |
| } | |
| /** | |
| * Output an error page showing the given status | |
| * | |
| * @param Status $status The status to report. | |
| */ | |
| protected function showUndoErrorPage( Status $status ) { | |
| $this->getOutput()->prepareErrorPage( | |
| $this->msg( 'entityschema-undo-heading-failed' ), | |
| $this->msg( 'errorpagetitle' ) | |
| ); | |
| $this->getOutput()->addHTML( $status->getMessage()->parse() ); | |
| $this->getOutput()->returnToMain(); | |
| } | |
| } |