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| 1 | <?php |
| 2 | declare( strict_types = 1 ); |
| 3 | |
| 4 | namespace MediaWiki\Extension\Translate\PageTranslation; |
| 5 | |
| 6 | use JobQueueGroup; |
| 7 | use LogicException; |
| 8 | use MediaWiki\Cache\LinkBatchFactory; |
| 9 | use MediaWiki\Extension\Translate\MessageGroupProcessing\MoveTranslatableBundleJob; |
| 10 | use MediaWiki\Extension\Translate\MessageGroupProcessing\SubpageListBuilder; |
| 11 | use MediaWiki\Extension\Translate\MessageGroupProcessing\TranslatableBundle; |
| 12 | use MediaWiki\Extension\Translate\MessageGroupProcessing\TranslatableBundleFactory; |
| 13 | use MediaWiki\Extension\Translate\SystemUsers\FuzzyBot; |
| 14 | use MediaWiki\Page\MovePageFactory; |
| 15 | use MediaWiki\Title\Title; |
| 16 | use Message; |
| 17 | use ObjectCache; |
| 18 | use SplObjectStorage; |
| 19 | use Status; |
| 20 | use User; |
| 21 | |
| 22 | /** |
| 23 | * Contains the core logic to validate and move translatable bundles |
| 24 | * @author Abijeet Patro |
| 25 | * @license GPL-2.0-or-later |
| 26 | * @since 2021.03 |
| 27 | */ |
| 28 | class TranslatableBundleMover { |
| 29 | private const LOCK_TIMEOUT = 3600 * 2; |
| 30 | private const FETCH_TRANSLATABLE_SUBPAGES = true; |
| 31 | private MovePageFactory $movePageFactory; |
| 32 | private ?int $pageMoveLimit; |
| 33 | private JobQueueGroup $jobQueue; |
| 34 | private LinkBatchFactory $linkBatchFactory; |
| 35 | private TranslatableBundleFactory $bundleFactory; |
| 36 | private SubpageListBuilder $subpageBuilder; |
| 37 | private bool $pageMoveLimitEnabled = true; |
| 38 | |
| 39 | private const REDIRECTABLE_PAGE_TYPES = [ |
| 40 | 'pt-movepage-list-source' => true, |
| 41 | 'pt-movepage-list-section' => false, |
| 42 | 'pt-movepage-list-translatable' => false, |
| 43 | 'pt-movepage-list-translation' => false, |
| 44 | 'pt-movepage-list-other' => true |
| 45 | ]; |
| 46 | |
| 47 | public function __construct( |
| 48 | MovePageFactory $movePageFactory, |
| 49 | JobQueueGroup $jobQueue, |
| 50 | LinkBatchFactory $linkBatchFactory, |
| 51 | TranslatableBundleFactory $bundleFactory, |
| 52 | SubpageListBuilder $subpageBuilder, |
| 53 | ?int $pageMoveLimit |
| 54 | ) { |
| 55 | $this->movePageFactory = $movePageFactory; |
| 56 | $this->jobQueue = $jobQueue; |
| 57 | $this->pageMoveLimit = $pageMoveLimit; |
| 58 | $this->linkBatchFactory = $linkBatchFactory; |
| 59 | $this->bundleFactory = $bundleFactory; |
| 60 | $this->subpageBuilder = $subpageBuilder; |
| 61 | } |
| 62 | |
| 63 | public function getPageMoveCollection( |
| 64 | Title $source, |
| 65 | ?Title $target, |
| 66 | User $user, |
| 67 | string $reason, |
| 68 | bool $moveSubPages, |
| 69 | bool $moveTalkPages, |
| 70 | bool $leaveRedirect |
| 71 | ): PageMoveCollection { |
| 72 | $blockers = new SplObjectStorage(); |
| 73 | |
| 74 | if ( !$target ) { |
| 75 | $blockers[$source] = Status::newFatal( 'pt-movepage-block-base-invalid' ); |
| 76 | throw new ImpossiblePageMove( $blockers ); |
| 77 | } |
| 78 | |
| 79 | if ( $target->inNamespaces( NS_MEDIAWIKI, NS_TRANSLATIONS ) ) { |
| 80 | $blockers[$source] = Status::newFatal( 'immobile-target-namespace', $target->getNsText() ); |
| 81 | throw new ImpossiblePageMove( $blockers ); |
| 82 | } |
| 83 | |
| 84 | $movePage = $this->movePageFactory->newMovePage( $source, $target ); |
| 85 | $status = $movePage->isValidMove(); |
| 86 | $status->merge( $movePage->probablyCanMove( $user, $reason ) ); |
| 87 | if ( !$status->isOK() ) { |
| 88 | $blockers[$source] = $status; |
| 89 | } |
| 90 | |
| 91 | // Don't spam the same errors for all pages if base page fails |
| 92 | if ( count( $blockers ) ) { |
| 93 | throw new ImpossiblePageMove( $blockers ); |
| 94 | } |
| 95 | |
| 96 | $pageCollection = $this->getPagesToMove( |
| 97 | $source, $target, $moveSubPages, self::FETCH_TRANSLATABLE_SUBPAGES, $moveTalkPages, $leaveRedirect |
| 98 | ); |
| 99 | |
| 100 | // Collect all the old and new titles for checks |
| 101 | $titles = [ |
| 102 | 'tp' => $pageCollection->getTranslationPagesPair(), |
| 103 | 'subpage' => $pageCollection->getSubpagesPair(), |
| 104 | 'section' => $pageCollection->getUnitPagesPair() |
| 105 | ]; |
| 106 | |
| 107 | // Check that all new titles are valid and count them. Add 1 for source page. |
| 108 | $moveCount = 1; |
| 109 | $lb = $this->linkBatchFactory->newLinkBatch(); |
| 110 | foreach ( $titles as $type => $list ) { |
| 111 | $moveCount += count( $list ); |
| 112 | // Give grep a chance to find the usages: |
| 113 | // pt-movepage-block-tp-invalid, pt-movepage-block-section-invalid, |
| 114 | // pt-movepage-block-subpage-invalid |
| 115 | foreach ( $list as $pair ) { |
| 116 | $old = $pair->getOldTitle(); |
| 117 | $new = $pair->getNewTitle(); |
| 118 | |
| 119 | if ( $new === null ) { |
| 120 | $blockers[$old] = $this->getRenameMoveBlocker( $old, $type, $pair->getRenameErrorCode() ); |
| 121 | continue; |
| 122 | } |
| 123 | $lb->addObj( $old ); |
| 124 | $lb->addObj( $new ); |
| 125 | } |
| 126 | } |
| 127 | |
| 128 | if ( $this->pageMoveLimitEnabled ) { |
| 129 | if ( $this->pageMoveLimit !== null && $moveCount > $this->pageMoveLimit ) { |
| 130 | $blockers[$source] = Status::newFatal( |
| 131 | 'pt-movepage-page-count-limit', |
| 132 | Message::numParam( $this->pageMoveLimit ) |
| 133 | ); |
| 134 | } |
| 135 | } |
| 136 | |
| 137 | // Stop further validation if there are blockers already. |
| 138 | if ( count( $blockers ) ) { |
| 139 | throw new ImpossiblePageMove( $blockers ); |
| 140 | } |
| 141 | |
| 142 | // Check that there are no move blockers |
| 143 | $lb->setCaller( __METHOD__ )->execute(); |
| 144 | foreach ( $titles as $type => $list ) { |
| 145 | foreach ( $list as $pair ) { |
| 146 | $old = $pair->getOldTitle(); |
| 147 | $new = $pair->getNewTitle(); |
| 148 | |
| 149 | /* This method has terrible performance: |
| 150 | * - 2 queries by core |
| 151 | * - 3 queries by lqt |
| 152 | * - and no obvious way to preload the data! */ |
| 153 | $movePage = $this->movePageFactory->newMovePage( $old, $new ); |
| 154 | $status = $movePage->isValidMove(); |
| 155 | // Do not check for permissions here, as these pages are not editable/movable |
| 156 | // in regular use |
| 157 | if ( !$status->isOK() ) { |
| 158 | $blockers[$old] = $status; |
| 159 | } |
| 160 | |
| 161 | /* Because of the poor performance, check only one of the possibly thousands |
| 162 | * of section pages and assume rest are fine. This assumes section pages are |
| 163 | * listed last in the array. */ |
| 164 | if ( $type === 'section' ) { |
| 165 | break; |
| 166 | } |
| 167 | } |
| 168 | } |
| 169 | |
| 170 | if ( count( $blockers ) ) { |
| 171 | throw new ImpossiblePageMove( $blockers ); |
| 172 | } |
| 173 | |
| 174 | return $pageCollection; |
| 175 | } |
| 176 | |
| 177 | public function moveAsynchronously( |
| 178 | Title $source, |
| 179 | Title $target, |
| 180 | bool $moveSubPages, |
| 181 | User $user, |
| 182 | string $moveReason, |
| 183 | bool $moveTalkPages, |
| 184 | bool $leaveRedirect |
| 185 | ): void { |
| 186 | $pageCollection = $this->getPagesToMove( |
| 187 | $source, $target, $moveSubPages, !self::FETCH_TRANSLATABLE_SUBPAGES, $moveTalkPages, $leaveRedirect |
| 188 | ); |
| 189 | $pagesToMove = $pageCollection->getListOfPages(); |
| 190 | $pagesToLeaveRedirect = $pageCollection->getListOfPagesToRedirect(); |
| 191 | |
| 192 | $job = MoveTranslatableBundleJob::newJob( |
| 193 | $source, |
| 194 | $target, |
| 195 | $pagesToMove, |
| 196 | $pagesToLeaveRedirect, |
| 197 | $moveReason, |
| 198 | $user, |
| 199 | ); |
| 200 | |
| 201 | $this->lock( array_keys( $pagesToMove ) ); |
| 202 | $this->lock( array_values( $pagesToMove ) ); |
| 203 | |
| 204 | $this->jobQueue->push( $job ); |
| 205 | } |
| 206 | |
| 207 | /** |
| 208 | * @param Title $source |
| 209 | * @param Title $target |
| 210 | * @param string[] $pagesToMove |
| 211 | * @param array<string,bool> $pagesToRedirect |
| 212 | * @param User $performer |
| 213 | * @param string $moveReason |
| 214 | * @param ?callable $progressCallback |
| 215 | */ |
| 216 | public function moveSynchronously( |
| 217 | Title $source, |
| 218 | Title $target, |
| 219 | array $pagesToMove, |
| 220 | array $pagesToRedirect, |
| 221 | User $performer, |
| 222 | string $moveReason, |
| 223 | ?callable $progressCallback = null |
| 224 | ): void { |
| 225 | $sourceBundle = $this->bundleFactory->getValidBundle( $source ); |
| 226 | |
| 227 | $this->move( $sourceBundle, $performer, $pagesToMove, $pagesToRedirect, $moveReason, $progressCallback ); |
| 228 | |
| 229 | $this->bundleFactory->getStore( $sourceBundle )->move( $source, $target ); |
| 230 | |
| 231 | $this->bundleFactory->getPageMoveLogger( $sourceBundle ) |
| 232 | ->logSuccess( $performer, $target, $moveReason ); |
| 233 | } |
| 234 | |
| 235 | public function disablePageMoveLimit(): void { |
| 236 | $this->pageMoveLimitEnabled = false; |
| 237 | } |
| 238 | |
| 239 | public function enablePageMoveLimit(): void { |
| 240 | $this->pageMoveLimitEnabled = true; |
| 241 | } |
| 242 | |
| 243 | public static function shouldLeaveRedirect( string $pageType, bool $leaveRedirect ): bool { |
| 244 | return self::REDIRECTABLE_PAGE_TYPES[ $pageType ] && $leaveRedirect; |
| 245 | } |
| 246 | |
| 247 | private function getPagesToMove( |
| 248 | Title $source, |
| 249 | Title $target, |
| 250 | bool $moveSubPages, |
| 251 | bool $fetchTranslatableSubpages, |
| 252 | bool $moveTalkPages, |
| 253 | bool $leaveRedirect |
| 254 | ): PageMoveCollection { |
| 255 | $sourceBundle = $this->bundleFactory->getValidBundle( $source ); |
| 256 | |
| 257 | $classifiedSubpages = $this->subpageBuilder->getSubpagesPerType( $sourceBundle, $moveTalkPages ); |
| 258 | |
| 259 | $talkPages = $moveTalkPages ? $classifiedSubpages['talkPages'] : []; |
| 260 | $subpages = $moveSubPages ? $classifiedSubpages['normalSubpages'] : []; |
| 261 | $relatedTranslatablePageList = []; |
| 262 | if ( $fetchTranslatableSubpages ) { |
| 263 | $relatedTranslatablePageList = array_merge( |
| 264 | $classifiedSubpages['translatableSubpages'], |
| 265 | $classifiedSubpages['translatableTalkPages'] |
| 266 | ); |
| 267 | } |
| 268 | |
| 269 | $pageTitleRenamer = new PageTitleRenamer( $source, $target ); |
| 270 | $createOps = static function ( array $pages, string $pageType ) |
| 271 | use ( $pageTitleRenamer, $talkPages, $leaveRedirect ) { |
| 272 | $leaveRedirect = self::shouldLeaveRedirect( $pageType, $leaveRedirect ); |
| 273 | $ops = []; |
| 274 | foreach ( $pages as $from ) { |
| 275 | $to = $pageTitleRenamer->getNewTitle( $from ); |
| 276 | $op = new PageMoveOperation( $from, $to ); |
| 277 | $op->setLeaveRedirect( $leaveRedirect ); |
| 278 | |
| 279 | $talkPage = $talkPages[ $from->getPrefixedDBkey() ] ?? null; |
| 280 | if ( $talkPage ) { |
| 281 | $op->setTalkpage( $talkPage, $pageTitleRenamer->getNewTitle( $talkPage ) ); |
| 282 | } |
| 283 | $ops[] = $op; |
| 284 | } |
| 285 | |
| 286 | return $ops; |
| 287 | }; |
| 288 | |
| 289 | return new PageMoveCollection( |
| 290 | $createOps( [ $source ], 'pt-movepage-list-source' )[0], |
| 291 | $createOps( $classifiedSubpages['translationPages'], 'pt-movepage-list-translation' ), |
| 292 | $createOps( $classifiedSubpages['translationUnitPages'], 'pt-movepage-list-section' ), |
| 293 | $createOps( $subpages, 'pt-movepage-list-other' ), |
| 294 | $relatedTranslatablePageList |
| 295 | ); |
| 296 | } |
| 297 | |
| 298 | /** @param string[] $titles */ |
| 299 | private function lock( array $titles ): void { |
| 300 | $cache = ObjectCache::getInstance( CACHE_ANYTHING ); |
| 301 | $data = []; |
| 302 | foreach ( $titles as $title ) { |
| 303 | $data[$cache->makeKey( 'pt-lock', sha1( $title ) )] = 'locked'; |
| 304 | } |
| 305 | |
| 306 | // Do not lock pages indefinitely during translatable page moves since |
| 307 | // they can fail. Add a timeout so that the locks expire by themselves. |
| 308 | // Timeout value has been chosen by a gut feeling |
| 309 | $cache->setMulti( $data, self::LOCK_TIMEOUT ); |
| 310 | } |
| 311 | |
| 312 | /** @param string[] $titles */ |
| 313 | private function unlock( array $titles ): void { |
| 314 | $cache = ObjectCache::getInstance( CACHE_ANYTHING ); |
| 315 | foreach ( $titles as $title ) { |
| 316 | $cache->delete( $cache->makeKey( 'pt-lock', sha1( $title ) ) ); |
| 317 | } |
| 318 | } |
| 319 | |
| 320 | /** |
| 321 | * @param TranslatableBundle $sourceBundle |
| 322 | * @param User $performer |
| 323 | * @param string[] $pagesToMove |
| 324 | * @param array<string,bool> $pagesToRedirect |
| 325 | * @param string $reason |
| 326 | * @param ?callable $progressCallback |
| 327 | */ |
| 328 | private function move( |
| 329 | TranslatableBundle $sourceBundle, |
| 330 | User $performer, |
| 331 | array $pagesToMove, |
| 332 | array $pagesToRedirect, |
| 333 | string $reason, |
| 334 | ?callable $progressCallback = null |
| 335 | ): void { |
| 336 | $fuzzyBot = FuzzyBot::getUser(); |
| 337 | |
| 338 | Hooks::$allowTargetEdit = true; |
| 339 | |
| 340 | $processed = 0; |
| 341 | foreach ( $pagesToMove as $source => $target ) { |
| 342 | $sourceTitle = Title::newFromText( $source ); |
| 343 | $targetTitle = Title::newFromText( $target ); |
| 344 | |
| 345 | if ( $source === $sourceBundle->getTitle()->getPrefixedText() ) { |
| 346 | $user = $performer; |
| 347 | $moveSummary = $reason; |
| 348 | } else { |
| 349 | $user = $fuzzyBot; |
| 350 | $moveSummary = wfMessage( |
| 351 | 'pt-movepage-logreason', $sourceBundle->getTitle()->getPrefixedText() |
| 352 | )->text(); |
| 353 | } |
| 354 | |
| 355 | $mover = $this->movePageFactory->newMovePage( $sourceTitle, $targetTitle ); |
| 356 | $status = $mover->move( $user, $moveSummary, $pagesToRedirect[$source] ?? false ); |
| 357 | $processed++; |
| 358 | |
| 359 | if ( $progressCallback ) { |
| 360 | $progressCallback( |
| 361 | $sourceTitle, |
| 362 | $targetTitle, |
| 363 | $status, |
| 364 | count( $pagesToMove ), |
| 365 | $processed |
| 366 | ); |
| 367 | } |
| 368 | |
| 369 | if ( !$status->isOK() ) { |
| 370 | $this->bundleFactory->getPageMoveLogger( $sourceBundle ) |
| 371 | ->logError( $performer, $sourceTitle, $targetTitle, $status ); |
| 372 | } |
| 373 | |
| 374 | $this->unlock( [ $source, $target ] ); |
| 375 | } |
| 376 | |
| 377 | Hooks::$allowTargetEdit = false; |
| 378 | } |
| 379 | |
| 380 | private function getRenameMoveBlocker( Title $old, string $pageType, int $renameError ): Status { |
| 381 | if ( $renameError === PageTitleRenamer::NO_ERROR ) { |
| 382 | throw new LogicException( |
| 383 | 'Trying to fetch MoveBlocker when there was no error during rename. Title: ' . |
| 384 | $old->getPrefixedText() . ', page type: ' . $pageType |
| 385 | ); |
| 386 | } |
| 387 | |
| 388 | if ( $renameError === PageTitleRenamer::UNKNOWN_PAGE ) { |
| 389 | $status = Status::newFatal( 'pt-movepage-block-unknown-page', $old->getPrefixedText() ); |
| 390 | } elseif ( $renameError === PageTitleRenamer::NS_TALK_UNSUPPORTED ) { |
| 391 | $status = Status::newFatal( 'pt-movepage-block-ns-talk-unsupported', $old->getPrefixedText() ); |
| 392 | } elseif ( $renameError === PageTitleRenamer::RENAME_FAILED ) { |
| 393 | $status = Status::newFatal( 'pt-movepage-block-rename-failed', $old->getPrefixedText() ); |
| 394 | } else { |
| 395 | return Status::newFatal( "pt-movepage-block-$pageType-invalid", $old->getPrefixedText() ); |
| 396 | } |
| 397 | |
| 398 | return $status; |
| 399 | } |
| 400 | } |