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| 1 | <?php |
| 2 | |
| 3 | namespace Wikibase\MediaInfo\Content; |
| 4 | |
| 5 | use Content; |
| 6 | use IContextSource; |
| 7 | use MediaWiki\Page\PageRecord; |
| 8 | use MediaWiki\Page\PageStore; |
| 9 | use MediaWiki\Title\Title; |
| 10 | use MediaWiki\Title\TitleFactory; |
| 11 | use Wikibase\DataModel\Entity\EntityId; |
| 12 | use Wikibase\DataModel\Entity\EntityIdParser; |
| 13 | use Wikibase\Lib\Store\EntityContentDataCodec; |
| 14 | use Wikibase\Lib\Store\EntityIdLookup; |
| 15 | use Wikibase\Lib\Store\NullEntityTermStoreWriter; |
| 16 | use Wikibase\MediaInfo\DataModel\MediaInfo; |
| 17 | use Wikibase\MediaInfo\DataModel\MediaInfoId; |
| 18 | use Wikibase\MediaInfo\Services\FilePageLookup; |
| 19 | use Wikibase\MediaInfo\Services\MediaInfoIdLookup; |
| 20 | use Wikibase\Repo\Content\EntityHandler; |
| 21 | use Wikibase\Repo\Content\EntityHolder; |
| 22 | use Wikibase\Repo\Search\Fields\FieldDefinitions; |
| 23 | use Wikibase\Repo\Validators\EntityConstraintProvider; |
| 24 | use Wikibase\Repo\Validators\ValidatorErrorLocalizer; |
| 25 | use Wikibase\Search\Elastic\Fields\DescriptionsField; |
| 26 | use Wikibase\Search\Elastic\Fields\LabelCountField; |
| 27 | use Wikibase\Search\Elastic\Fields\LabelsField; |
| 28 | use Wikimedia\Assert\Assert; |
| 29 | |
| 30 | /** |
| 31 | * @license GPL-2.0-or-later |
| 32 | * @author Bene* < benestar.wikimedia@gmail.com > |
| 33 | */ |
| 34 | class MediaInfoHandler extends EntityHandler { |
| 35 | |
| 36 | /** |
| 37 | * @var MissingMediaInfoHandler |
| 38 | */ |
| 39 | private $missingMediaInfoHandler; |
| 40 | |
| 41 | /** |
| 42 | * @var EntityIdLookup |
| 43 | */ |
| 44 | private $idLookup; |
| 45 | |
| 46 | /** |
| 47 | * @var FilePageLookup |
| 48 | */ |
| 49 | private $filePageLookup; |
| 50 | |
| 51 | /** |
| 52 | * @var array<string,Title|null> |
| 53 | */ |
| 54 | private $titleForIdCache = []; |
| 55 | |
| 56 | /** |
| 57 | * @var PageStore |
| 58 | */ |
| 59 | private $pageStore; |
| 60 | |
| 61 | /** |
| 62 | * @var TitleFactory |
| 63 | */ |
| 64 | private $titleFactory; |
| 65 | |
| 66 | /** |
| 67 | * @param EntityContentDataCodec $contentCodec |
| 68 | * @param EntityConstraintProvider $constraintProvider |
| 69 | * @param ValidatorErrorLocalizer $errorLocalizer |
| 70 | * @param EntityIdParser $entityIdParser |
| 71 | * @param MissingMediaInfoHandler $missingMediaInfoHandler |
| 72 | * @param MediaInfoIdLookup $idLookup |
| 73 | * @param FilePageLookup $filePageLookup |
| 74 | * @param FieldDefinitions $mediaInfoFieldDefinitions |
| 75 | * @param PageStore $pageStore |
| 76 | * @param TitleFactory $titleFactory |
| 77 | * @param callable|null $legacyExportFormatDetector |
| 78 | */ |
| 79 | public function __construct( |
| 80 | EntityContentDataCodec $contentCodec, |
| 81 | EntityConstraintProvider $constraintProvider, |
| 82 | ValidatorErrorLocalizer $errorLocalizer, |
| 83 | EntityIdParser $entityIdParser, |
| 84 | MissingMediaInfoHandler $missingMediaInfoHandler, |
| 85 | MediaInfoIdLookup $idLookup, |
| 86 | FilePageLookup $filePageLookup, |
| 87 | FieldDefinitions $mediaInfoFieldDefinitions, |
| 88 | PageStore $pageStore, |
| 89 | TitleFactory $titleFactory, |
| 90 | $legacyExportFormatDetector = null |
| 91 | ) { |
| 92 | parent::__construct( |
| 93 | MediaInfoContent::CONTENT_MODEL_ID, |
| 94 | new NullEntityTermStoreWriter(), |
| 95 | $contentCodec, |
| 96 | $constraintProvider, |
| 97 | $errorLocalizer, |
| 98 | $entityIdParser, |
| 99 | $mediaInfoFieldDefinitions, |
| 100 | $legacyExportFormatDetector |
| 101 | ); |
| 102 | $this->missingMediaInfoHandler = $missingMediaInfoHandler; |
| 103 | $this->idLookup = $idLookup; |
| 104 | $this->filePageLookup = $filePageLookup; |
| 105 | $this->pageStore = $pageStore; |
| 106 | $this->titleFactory = $titleFactory; |
| 107 | } |
| 108 | |
| 109 | /** |
| 110 | * @return MediaInfo |
| 111 | */ |
| 112 | public function makeEmptyEntity() { |
| 113 | return new MediaInfo(); |
| 114 | } |
| 115 | |
| 116 | /** |
| 117 | * @see EntityHandler::newEntityContent |
| 118 | * |
| 119 | * @param EntityHolder|null $entityHolder |
| 120 | * |
| 121 | * @return MediaInfoContent |
| 122 | */ |
| 123 | public function newEntityContent( EntityHolder $entityHolder = null ) { |
| 124 | return new MediaInfoContent( $entityHolder ); |
| 125 | } |
| 126 | |
| 127 | /** |
| 128 | * @param string $id |
| 129 | * |
| 130 | * @return MediaInfoId |
| 131 | */ |
| 132 | public function makeEntityId( $id ) { |
| 133 | return new MediaInfoId( $id ); |
| 134 | } |
| 135 | |
| 136 | /** |
| 137 | * @return string |
| 138 | */ |
| 139 | public function getEntityType() { |
| 140 | return MediaInfo::ENTITY_TYPE; |
| 141 | } |
| 142 | |
| 143 | /** |
| 144 | * @see EntityHandler::showMissingEntity |
| 145 | * |
| 146 | * This is overwritten to show a dummy MediaInfo entity when appropriate. |
| 147 | * |
| 148 | * @see MissingMediaInfoHandler::showMissingMediaInfo |
| 149 | * |
| 150 | * @param Title $title |
| 151 | * @param IContextSource $context |
| 152 | */ |
| 153 | public function showMissingEntity( Title $title, IContextSource $context ) { |
| 154 | $id = $this->missingMediaInfoHandler->getMediaInfoId( $title, $context ); |
| 155 | |
| 156 | if ( $id === null ) { |
| 157 | // No virtual MediaInfo for this title, fall back to the default behavior |
| 158 | // of displaying an error message. |
| 159 | parent::showMissingEntity( $title, $context ); |
| 160 | } else { |
| 161 | // Show a virtual MediaInfo |
| 162 | $this->missingMediaInfoHandler->showVirtualMediaInfo( $id, $context ); |
| 163 | } |
| 164 | } |
| 165 | |
| 166 | /** |
| 167 | * @param EntityId $id |
| 168 | * @return bool |
| 169 | */ |
| 170 | public function canCreateWithCustomId( EntityId $id ) { |
| 171 | return ( $id instanceof MediaInfoId ) |
| 172 | && ( $this->filePageLookup->getFilePage( $id ) !== null ); |
| 173 | } |
| 174 | |
| 175 | /** |
| 176 | * @return bool |
| 177 | */ |
| 178 | public function allowAutomaticIds() { |
| 179 | return false; |
| 180 | } |
| 181 | |
| 182 | /** |
| 183 | * @param Content $content |
| 184 | * @return array |
| 185 | */ |
| 186 | public function getContentDataForSearchIndex( Content $content ): array { |
| 187 | $fieldsData = parent::getContentDataForSearchIndex( $content ); |
| 188 | if ( $content->isRedirect() || !( $content instanceof MediaInfoContent ) ) { |
| 189 | return $fieldsData; |
| 190 | } |
| 191 | $entity = $content->getEntity(); |
| 192 | $fields = $this->fieldDefinitions->getFields(); |
| 193 | |
| 194 | foreach ( $fields as $fieldName => $field ) { |
| 195 | $fieldsData[$fieldName] = $field->getFieldData( $entity ); |
| 196 | } |
| 197 | |
| 198 | // Labels data is normally indexed for prefix matching. |
| 199 | // We don't need that for MediaInfo files, so swap labels data into descriptions |
| 200 | // instead so as not to overburden the search index |
| 201 | if ( isset( $fieldsData[ LabelsField::NAME ] ) ) { |
| 202 | $fieldsData[DescriptionsField::NAME] = $fieldsData[LabelsField::NAME]; |
| 203 | $fieldsData[LabelsField::NAME] = null; |
| 204 | } else { |
| 205 | $fieldsData[DescriptionsField::NAME] = null; |
| 206 | } |
| 207 | |
| 208 | $fieldsData[LabelCountField::NAME] = 0; |
| 209 | return $fieldsData; |
| 210 | } |
| 211 | |
| 212 | /** |
| 213 | * Returns the Title of the page in which this MediaInfoId is a slot |
| 214 | * |
| 215 | * @param EntityId $id |
| 216 | * @return Title|null |
| 217 | */ |
| 218 | public function getTitleForId( EntityId $id ) { |
| 219 | '@phan-var MediaInfoId $id'; |
| 220 | $idString = $id->getSerialization(); |
| 221 | if ( !isset( $this->titleForIdCache[$idString] ) ) { |
| 222 | $this->titleForIdCache[$idString] = $this->titleFactory->newFromID( $id->getNumericId() ); |
| 223 | } |
| 224 | return $this->titleForIdCache[$idString]; |
| 225 | } |
| 226 | |
| 227 | /** |
| 228 | * Returns an array of Titles of page in which these MediaInfoIds are slots, indexed |
| 229 | * by the MediaInfoId serialization |
| 230 | * |
| 231 | * @param EntityId[] $ids |
| 232 | * @return Title[] |
| 233 | */ |
| 234 | public function getTitlesForIds( array $ids ) { |
| 235 | '@phan-var MediaInfoId[] $ids'; |
| 236 | Assert::parameterElementType( 'Wikibase\MediaInfo\DataModel\MediaInfoId', $ids, '$ids' ); |
| 237 | |
| 238 | $titles = []; |
| 239 | $uncachedNumericIds = []; |
| 240 | // get whatever cached ids we can first |
| 241 | /** @var MediaInfoId $id */ |
| 242 | foreach ( $ids as $id ) { |
| 243 | $idString = $id->getSerialization(); |
| 244 | if ( isset( $this->titleForIdCache[$idString] ) ) { |
| 245 | $titles[$idString] = $this->titleForIdCache[$idString]; |
| 246 | } else { |
| 247 | $uncachedNumericIds[] = $id->getNumericId(); |
| 248 | } |
| 249 | } |
| 250 | |
| 251 | $unindexedTitles = $this->pageStore |
| 252 | ->newSelectQueryBuilder() |
| 253 | ->wherePageIds( $uncachedNumericIds ) |
| 254 | ->caller( __METHOD__ ) |
| 255 | ->fetchPageRecords(); |
| 256 | |
| 257 | /** @var PageRecord $pageIdentity */ |
| 258 | foreach ( $unindexedTitles as $pageIdentity ) { |
| 259 | $title = $this->titleFactory->castFromPageIdentity( $pageIdentity ); |
| 260 | |
| 261 | // @phan-suppress-next-line PhanTypeMismatchArgumentNullable |
| 262 | $idString = $this->getIdForTitle( $title )->getSerialization(); |
| 263 | $this->titleForIdCache[$idString] = $title; |
| 264 | $titles[$idString] = $title; |
| 265 | } |
| 266 | return $titles; |
| 267 | } |
| 268 | |
| 269 | /** |
| 270 | * @param Title $target |
| 271 | * @return EntityId |
| 272 | */ |
| 273 | public function getIdForTitle( Title $target ) { |
| 274 | $mediaInfoId = $this->idLookup->getEntityIdForTitle( $target ); |
| 275 | if ( $mediaInfoId instanceof MediaInfoId ) { |
| 276 | return $mediaInfoId; |
| 277 | } |
| 278 | |
| 279 | return parent::getIdForTitle( $target ); |
| 280 | } |
| 281 | |
| 282 | } |