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| 1 | <?php |
| 2 | |
| 3 | declare( strict_types = 1 ); |
| 4 | |
| 5 | namespace EntitySchema\MediaWiki; |
| 6 | |
| 7 | use Diff\DiffOp\Diff\Diff; |
| 8 | use Diff\Patcher\PatcherException; |
| 9 | use DomainException; |
| 10 | use EntitySchema\Domain\Model\EntitySchemaId; |
| 11 | use EntitySchema\MediaWiki\Content\EntitySchemaContent; |
| 12 | use EntitySchema\Services\Converter\EntitySchemaConverter; |
| 13 | use EntitySchema\Services\Converter\FullArrayEntitySchemaData; |
| 14 | use EntitySchema\Services\Diff\EntitySchemaDiffer; |
| 15 | use EntitySchema\Services\Diff\EntitySchemaPatcher; |
| 16 | use MediaWiki\Status\Status; |
| 17 | |
| 18 | /** |
| 19 | * @license GPL-2.0-or-later |
| 20 | */ |
| 21 | final class UndoHandler { |
| 22 | |
| 23 | /** |
| 24 | * @throws DomainException |
| 25 | */ |
| 26 | public function validateContentIds( |
| 27 | EntitySchemaContent $undoFromContent, |
| 28 | EntitySchemaContent $undoToContent, |
| 29 | ?EntitySchemaContent $baseContent = null |
| 30 | ): EntitySchemaId { |
| 31 | $converter = new EntitySchemaConverter(); |
| 32 | $firstID = $converter->getSchemaID( $undoFromContent->getText() ); |
| 33 | if ( $firstID === null || |
| 34 | $firstID !== $converter->getSchemaID( $undoToContent->getText() ) |
| 35 | ) { |
| 36 | throw new DomainException( 'ID must be the same for all contents' ); |
| 37 | } |
| 38 | |
| 39 | if ( $baseContent !== null && |
| 40 | $firstID !== $converter->getSchemaID( $baseContent->getText() ) |
| 41 | ) { |
| 42 | throw new DomainException( 'ID must be the same for all contents' ); |
| 43 | } |
| 44 | |
| 45 | return new EntitySchemaId( $firstID ); |
| 46 | } |
| 47 | |
| 48 | /** @return Status<Diff> */ |
| 49 | public function getDiffFromContents( |
| 50 | EntitySchemaContent $undoFromContent, |
| 51 | EntitySchemaContent $undoToContent |
| 52 | ): Status { |
| 53 | |
| 54 | $differ = new EntitySchemaDiffer(); |
| 55 | $converter = new EntitySchemaConverter(); |
| 56 | $diff = $differ->diffSchemas( |
| 57 | $converter->getFullArraySchemaData( $undoFromContent->getText() ), |
| 58 | $converter->getFullArraySchemaData( $undoToContent->getText() ) |
| 59 | ); |
| 60 | |
| 61 | return Status::newGood( $diff ); |
| 62 | } |
| 63 | |
| 64 | /** @return Status<FullArrayEntitySchemaData> */ |
| 65 | public function tryPatching( Diff $diff, EntitySchemaContent $baseContent ): Status { |
| 66 | |
| 67 | $patcher = new EntitySchemaPatcher(); |
| 68 | $converter = new EntitySchemaConverter(); |
| 69 | |
| 70 | try { |
| 71 | $patchedSchema = $patcher->patchSchema( |
| 72 | $converter->getFullArraySchemaData( $baseContent->getText() ), |
| 73 | $diff |
| 74 | ); |
| 75 | } catch ( PatcherException ) { |
| 76 | // show error here |
| 77 | return Status::newFatal( 'entityschema-undo-cannot-apply-patch' ); |
| 78 | } |
| 79 | |
| 80 | return Status::newGood( $patchedSchema ); |
| 81 | } |
| 82 | |
| 83 | } |