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| 1 | <?php |
| 2 | |
| 3 | namespace ContentTranslation\Store; |
| 4 | |
| 5 | use ContentTranslation\LoadBalancer; |
| 6 | use ContentTranslation\Service\UserService; |
| 7 | use ContentTranslation\Translation; |
| 8 | use DateTime; |
| 9 | use MediaWiki\User\UserIdentity; |
| 10 | use Wikimedia\Rdbms\Platform\ISQLPlatform; |
| 11 | use Wikimedia\Rdbms\SelectQueryBuilder; |
| 12 | |
| 13 | class TranslationStore { |
| 14 | public const TRANSLATION_TABLE_NAME = 'cx_translations'; |
| 15 | public const TRANSLATOR_TABLE_NAME = 'cx_translators'; |
| 16 | |
| 17 | public const TRANSLATION_STATUS_DRAFT = 'draft'; |
| 18 | public const TRANSLATION_STATUS_PUBLISHED = 'published'; |
| 19 | public const TRANSLATION_STATUS_DELETED = 'deleted'; |
| 20 | |
| 21 | private LoadBalancer $lb; |
| 22 | private UserService $userService; |
| 23 | |
| 24 | public function __construct( LoadBalancer $lb, UserService $userService ) { |
| 25 | $this->lb = $lb; |
| 26 | $this->userService = $userService; |
| 27 | } |
| 28 | |
| 29 | public function unlinkTranslationFromTranslator( int $translationId ) { |
| 30 | $dbw = $this->lb->getConnection( DB_PRIMARY ); |
| 31 | |
| 32 | $dbw->newDeleteQueryBuilder() |
| 33 | ->deleteFrom( self::TRANSLATOR_TABLE_NAME ) |
| 34 | ->where( [ 'translator_translation_id' => $translationId ] ) |
| 35 | ->caller( __METHOD__ ) |
| 36 | ->execute(); |
| 37 | } |
| 38 | |
| 39 | public function deleteTranslation( int $translationId ) { |
| 40 | $dbw = $this->lb->getConnection( DB_PRIMARY ); |
| 41 | |
| 42 | $dbw->newUpdateQueryBuilder() |
| 43 | ->update( self::TRANSLATION_TABLE_NAME ) |
| 44 | ->set( [ 'translation_status' => self::TRANSLATION_STATUS_DELETED ] ) |
| 45 | ->where( [ 'translation_id' => $translationId ] ) |
| 46 | ->caller( __METHOD__ ) |
| 47 | ->execute(); |
| 48 | } |
| 49 | |
| 50 | /** |
| 51 | * This method finds a translation inside "cx_translations" table, that corresponds to the |
| 52 | * given source/target languages, source title and the translator of the published |
| 53 | * translation, and returns it. If no such translation exists, the method returns null. |
| 54 | * |
| 55 | * There can only ever be one translation, returned by this method. |
| 56 | * |
| 57 | * @param UserIdentity $user |
| 58 | * @param string $sourceTitle |
| 59 | * @param string $sourceLanguage |
| 60 | * @param string $targetLanguage |
| 61 | * @param string|null $status possible status values: "published"|"draft"|"deleted" |
| 62 | * @return Translation|null |
| 63 | */ |
| 64 | public function findTranslationByUser( |
| 65 | UserIdentity $user, |
| 66 | string $sourceTitle, |
| 67 | string $sourceLanguage, |
| 68 | string $targetLanguage, |
| 69 | ?string $status = null |
| 70 | ): ?Translation { |
| 71 | $dbr = $this->lb->getConnection( DB_REPLICA ); |
| 72 | $globalUserId = $this->userService->getGlobalUserId( $user ); |
| 73 | |
| 74 | $conditions = [ |
| 75 | 'translation_source_language' => $sourceLanguage, |
| 76 | 'translation_target_language' => $targetLanguage, |
| 77 | 'translation_source_title' => $sourceTitle, |
| 78 | 'translation_started_by' => $globalUserId, |
| 79 | 'translation_last_update_by' => $globalUserId, |
| 80 | ]; |
| 81 | |
| 82 | if ( $status ) { |
| 83 | $conditions['translation_status'] = $status; |
| 84 | } |
| 85 | $row = $dbr->newSelectQueryBuilder() |
| 86 | ->select( ISQLPlatform::ALL_ROWS ) |
| 87 | ->from( self::TRANSLATION_TABLE_NAME ) |
| 88 | ->where( $conditions ) |
| 89 | ->caller( __METHOD__ ) |
| 90 | ->fetchRow(); |
| 91 | |
| 92 | return $row ? Translation::newFromRow( $row ) : null; |
| 93 | } |
| 94 | |
| 95 | /** |
| 96 | * Given a user id, this method returns the last published translation for that translator, |
| 97 | * which have been started within the last 10 minutes. If no published translation within |
| 98 | * the last 10 minutes, null is returned. |
| 99 | */ |
| 100 | public function findRecentTranslationByUser( int $userId ): ?Translation { |
| 101 | $dbr = $this->lb->getConnection( DB_REPLICA ); |
| 102 | |
| 103 | $conditions = [ |
| 104 | 'translation_started_by' => $userId, |
| 105 | // Only fetch translations within 10 last minutes |
| 106 | // Translations older than 10 minutes, are not considered recent here |
| 107 | $dbr->expr( 'translation_start_timestamp', '>=', $dbr->timestamp( time() - ( 10 * 60 ) ) ), |
| 108 | // target URL is always not null for articles that have been published at some point |
| 109 | $dbr->expr( 'translation_target_url', '!=', null ), |
| 110 | ]; |
| 111 | |
| 112 | $row = $dbr->newSelectQueryBuilder() |
| 113 | ->select( ISQLPlatform::ALL_ROWS ) |
| 114 | ->from( self::TRANSLATION_TABLE_NAME ) |
| 115 | ->where( $conditions ) |
| 116 | ->orderBy( 'translation_start_timestamp', SelectQueryBuilder::SORT_DESC ) |
| 117 | ->limit( 1 ) |
| 118 | ->caller( __METHOD__ ) |
| 119 | ->fetchRow(); |
| 120 | |
| 121 | return $row ? Translation::newFromRow( $row ) : null; |
| 122 | } |
| 123 | |
| 124 | /** |
| 125 | * This method finds a translation inside "cx_translations" table, that corresponds to the |
| 126 | * given id and the translator (user) of the translation, and returns it. If no such translation |
| 127 | * exists, the method returns null. |
| 128 | * |
| 129 | * @param UserIdentity $user |
| 130 | * @param int $id |
| 131 | * @return Translation|null |
| 132 | * @throws \Exception |
| 133 | */ |
| 134 | public function findByUserAndId( UserIdentity $user, int $id ): ?Translation { |
| 135 | $dbr = $this->lb->getConnection( DB_REPLICA ); |
| 136 | $globalUserId = $this->userService->getGlobalUserId( $user ); |
| 137 | |
| 138 | $row = $dbr->newSelectQueryBuilder() |
| 139 | ->select( ISQLPlatform::ALL_ROWS ) |
| 140 | ->from( self::TRANSLATION_TABLE_NAME ) |
| 141 | ->where( [ |
| 142 | 'translation_id' => $id, |
| 143 | 'translation_started_by' => $globalUserId, |
| 144 | 'translation_last_update_by' => $globalUserId, |
| 145 | ] ) |
| 146 | ->caller( __METHOD__ ) |
| 147 | ->fetchRow(); |
| 148 | |
| 149 | return $row ? Translation::newFromRow( $row ) : null; |
| 150 | } |
| 151 | |
| 152 | /** |
| 153 | * Find a published translation for a given target title and language |
| 154 | * |
| 155 | * @param string $publishedTitle |
| 156 | * @param string $targetLanguage |
| 157 | * @return Translation|null |
| 158 | */ |
| 159 | public function findByPublishedTitle( string $publishedTitle, string $targetLanguage ): ?Translation { |
| 160 | $dbr = $this->lb->getConnection( DB_REPLICA ); |
| 161 | |
| 162 | $row = $dbr->newSelectQueryBuilder() |
| 163 | ->select( ISQLPlatform::ALL_ROWS ) |
| 164 | ->from( self::TRANSLATION_TABLE_NAME ) |
| 165 | ->where( [ |
| 166 | 'translation_target_language' => $targetLanguage, |
| 167 | 'translation_target_title' => $publishedTitle, |
| 168 | Translation::getPublishedCondition( $dbr ), |
| 169 | ] ) |
| 170 | ->caller( __METHOD__ ) |
| 171 | ->fetchRow(); |
| 172 | |
| 173 | return $row ? Translation::newFromRow( $row ) : null; |
| 174 | } |
| 175 | |
| 176 | /** |
| 177 | * Given a source title, a source language and a target language, |
| 178 | * find the oldest matching translation. |
| 179 | * |
| 180 | * @param string $sourceTitle |
| 181 | * @param string $sourceLanguage |
| 182 | * @param string $targetLanguage |
| 183 | * @return Translation|null |
| 184 | */ |
| 185 | public function findTranslationByTitle( |
| 186 | string $sourceTitle, |
| 187 | string $sourceLanguage, |
| 188 | string $targetLanguage |
| 189 | ): ?Translation { |
| 190 | $dbr = $this->lb->getConnection( DB_REPLICA ); |
| 191 | |
| 192 | $row = $dbr->newSelectQueryBuilder() |
| 193 | ->select( ISQLPlatform::ALL_ROWS ) |
| 194 | ->from( self::TRANSLATION_TABLE_NAME ) |
| 195 | ->where( [ |
| 196 | 'translation_source_language' => $sourceLanguage, |
| 197 | 'translation_target_language' => $targetLanguage, |
| 198 | 'translation_source_title' => $sourceTitle |
| 199 | ] ) |
| 200 | ->orderBy( 'translation_last_updated_timestamp', SelectQueryBuilder::SORT_ASC ) |
| 201 | ->limit( 1 ) |
| 202 | ->caller( __METHOD__ ) |
| 203 | ->fetchRow(); |
| 204 | |
| 205 | return $row ? Translation::newFromRow( $row ) : null; |
| 206 | } |
| 207 | |
| 208 | /** |
| 209 | * Given an array of source titles, a source language and a target language, |
| 210 | * find all matching translations. |
| 211 | * |
| 212 | * @param string[] $titles |
| 213 | * @param string $sourceLanguage |
| 214 | * @param string $targetLanguage |
| 215 | * @return Translation[] |
| 216 | */ |
| 217 | public function findTranslationsByTitles( array $titles, string $sourceLanguage, string $targetLanguage ): array { |
| 218 | $dbr = $this->lb->getConnection( DB_REPLICA ); |
| 219 | |
| 220 | $resultSet = $dbr->newSelectQueryBuilder() |
| 221 | ->select( ISQLPlatform::ALL_ROWS ) |
| 222 | ->from( self::TRANSLATION_TABLE_NAME ) |
| 223 | ->where( [ |
| 224 | 'translation_source_language' => $sourceLanguage, |
| 225 | 'translation_target_language' => $targetLanguage, |
| 226 | 'translation_source_title' => $titles |
| 227 | ] ) |
| 228 | ->orderBy( 'translation_last_updated_timestamp', SelectQueryBuilder::SORT_ASC ) |
| 229 | ->caller( __METHOD__ ) |
| 230 | ->fetchResultSet(); |
| 231 | |
| 232 | $result = []; |
| 233 | foreach ( $resultSet as $row ) { |
| 234 | $result[] = Translation::newFromRow( $row ); |
| 235 | } |
| 236 | |
| 237 | return $result; |
| 238 | } |
| 239 | |
| 240 | /** |
| 241 | * Given a source title, a source language and a target language, find all conflicting translations. |
| 242 | * Conflicting translations are translations in progress ("draft") for same language pair and source |
| 243 | * page in last 24 hours. |
| 244 | * |
| 245 | * Here we assume that the caller already checked that no draft for the user already exists. |
| 246 | * |
| 247 | * @param string $title |
| 248 | * @param string $sourceLang |
| 249 | * @param string $targetLang |
| 250 | * @return Translation[] |
| 251 | * @throws \Exception |
| 252 | */ |
| 253 | public function findConflictingDraftTranslations( string $title, string $sourceLang, string $targetLang ): array { |
| 254 | $translations = $this->findTranslationsByTitles( [ $title ], $sourceLang, $targetLang ); |
| 255 | |
| 256 | $conflicts = array_filter( $translations, static function ( Translation $translation ) { |
| 257 | $isDraft = $translation->getData()['status'] === self::TRANSLATION_STATUS_DRAFT; |
| 258 | |
| 259 | // filter out non-draft translations |
| 260 | if ( !$isDraft ) { |
| 261 | return false; |
| 262 | } |
| 263 | |
| 264 | $lastUpdateTime = new DateTime( $translation->getData()['lastUpdateTimestamp'] ); |
| 265 | |
| 266 | // Only keep translations that have been updated in the last 24 hours |
| 267 | return (bool)$lastUpdateTime->diff( new DateTime( '-24 hours' ) )->invert; |
| 268 | } ); |
| 269 | |
| 270 | return array_values( $conflicts ); |
| 271 | } |
| 272 | |
| 273 | /** |
| 274 | * @param int $userId |
| 275 | * @param int $limit How many results to return |
| 276 | * @param string|null $offset Offset condition (timestamp) |
| 277 | * @param string|null $type |
| 278 | * @param string|null $from |
| 279 | * @param string|null $to |
| 280 | * @return Translation[] |
| 281 | */ |
| 282 | public function getAllTranslationsByUserId( |
| 283 | int $userId, |
| 284 | int $limit, |
| 285 | ?string $offset = null, |
| 286 | ?string $type = null, |
| 287 | ?string $from = null, |
| 288 | ?string $to = null |
| 289 | ): array { |
| 290 | // Note: there is no index on translation_last_updated_timestamp |
| 291 | $dbr = $this->lb->getConnection( DB_REPLICA ); |
| 292 | |
| 293 | $whereConditions = [ 'translation_started_by' => $userId ]; |
| 294 | |
| 295 | if ( $type !== null ) { |
| 296 | $whereConditions['translation_status'] = $type; |
| 297 | } |
| 298 | if ( $from !== null ) { |
| 299 | $whereConditions['translation_source_language'] = $from; |
| 300 | } |
| 301 | if ( $to !== null ) { |
| 302 | $whereConditions['translation_target_language'] = $to; |
| 303 | } |
| 304 | if ( $offset !== null ) { |
| 305 | $whereConditions[] = $dbr->expr( 'translation_last_updated_timestamp', '<', $dbr->timestamp( $offset ) ); |
| 306 | } |
| 307 | |
| 308 | $resultSet = $dbr->newSelectQueryBuilder() |
| 309 | ->select( ISQLPlatform::ALL_ROWS ) |
| 310 | ->from( self::TRANSLATION_TABLE_NAME ) |
| 311 | ->where( $whereConditions ) |
| 312 | ->orderBy( 'translation_last_updated_timestamp', SelectQueryBuilder::SORT_DESC ) |
| 313 | ->limit( $limit ) |
| 314 | ->caller( __METHOD__ ) |
| 315 | ->fetchResultSet(); |
| 316 | |
| 317 | $result = []; |
| 318 | foreach ( $resultSet as $row ) { |
| 319 | $result[] = Translation::newFromRow( $row ); |
| 320 | } |
| 321 | |
| 322 | return $result; |
| 323 | } |
| 324 | |
| 325 | public function insertTranslation( Translation $translation, UserIdentity $user ): void { |
| 326 | $dbw = $this->lb->getConnection( DB_PRIMARY ); |
| 327 | |
| 328 | $row = [ |
| 329 | 'translation_source_title' => $translation->translation['sourceTitle'], |
| 330 | 'translation_target_title' => $translation->translation['targetTitle'], |
| 331 | 'translation_source_language' => $translation->translation['sourceLanguage'], |
| 332 | 'translation_target_language' => $translation->translation['targetLanguage'], |
| 333 | 'translation_source_revision_id' => $translation->translation['sourceRevisionId'], |
| 334 | 'translation_source_url' => $translation->translation['sourceURL'], |
| 335 | 'translation_status' => $translation->translation['status'], |
| 336 | 'translation_progress' => $translation->translation['progress'], |
| 337 | 'translation_last_updated_timestamp' => $dbw->timestamp(), |
| 338 | 'translation_last_update_by' => $this->userService->getGlobalUserId( $user ), |
| 339 | 'translation_start_timestamp' => $dbw->timestamp(), |
| 340 | 'translation_started_by' => $this->userService->getGlobalUserId( $user ), |
| 341 | 'translation_cx_version' => $translation->translation['cxVersion'], |
| 342 | ]; |
| 343 | |
| 344 | if ( $translation->translation['status'] === self::TRANSLATION_STATUS_PUBLISHED ) { |
| 345 | $row['translation_target_url'] = $translation->translation['targetURL']; |
| 346 | $row['translation_target_revision_id'] = $translation->translation['targetRevisionId']; |
| 347 | } |
| 348 | |
| 349 | $dbw->newInsertQueryBuilder() |
| 350 | ->insertInto( self::TRANSLATION_TABLE_NAME ) |
| 351 | ->row( $row ) |
| 352 | ->caller( __METHOD__ ) |
| 353 | ->execute(); |
| 354 | |
| 355 | $translation->translation['id'] = (int)$dbw->insertId(); |
| 356 | $translation->setIsNew( true ); |
| 357 | } |
| 358 | |
| 359 | public function updateTranslation( Translation $translation, array $options = [] ): void { |
| 360 | $dbw = $this->lb->getConnection( DB_PRIMARY ); |
| 361 | |
| 362 | $set = [ |
| 363 | 'translation_target_title' => $translation->translation['targetTitle'], |
| 364 | 'translation_source_revision_id' => $translation->translation['sourceRevisionId'], |
| 365 | 'translation_source_url' => $translation->translation['sourceURL'], |
| 366 | 'translation_status' => $translation->translation['status'], |
| 367 | 'translation_last_updated_timestamp' => $dbw->timestamp(), |
| 368 | 'translation_progress' => $translation->translation['progress'], |
| 369 | 'translation_cx_version' => $translation->translation['cxVersion'], |
| 370 | ]; |
| 371 | |
| 372 | if ( $translation->translation['status'] === self::TRANSLATION_STATUS_PUBLISHED ) { |
| 373 | $set['translation_target_url'] = $translation->translation['targetURL']; |
| 374 | $set['translation_target_revision_id'] = $translation->translation['targetRevisionId']; |
| 375 | } |
| 376 | |
| 377 | $isFreshTranslation = $options['freshTranslation'] ?? false; |
| 378 | if ( $isFreshTranslation ) { |
| 379 | $set['translation_start_timestamp'] = $dbw->timestamp(); |
| 380 | } |
| 381 | |
| 382 | $dbw->newUpdateQueryBuilder() |
| 383 | ->update( self::TRANSLATION_TABLE_NAME ) |
| 384 | ->set( $set ) |
| 385 | ->where( [ 'translation_id' => $translation->getTranslationId() ] ) |
| 386 | ->caller( __METHOD__ ) |
| 387 | ->execute(); |
| 388 | |
| 389 | $translation->setIsNew( false ); |
| 390 | } |
| 391 | |
| 392 | /** |
| 393 | * A convenient abstraction of create and update methods. Checks if |
| 394 | * translation exists and chooses either of create or update actions. |
| 395 | * |
| 396 | * @param Translation $translation |
| 397 | * @param UserIdentity $user |
| 398 | */ |
| 399 | public function saveTranslation( Translation $translation, UserIdentity $user ): void { |
| 400 | $existingTranslation = $this->findTranslationByUser( |
| 401 | $user, |
| 402 | $translation->getSourceTitle(), |
| 403 | $translation->getSourceLanguage(), |
| 404 | $translation->getTargetLanguage() |
| 405 | ); |
| 406 | |
| 407 | if ( $existingTranslation === null ) { |
| 408 | $this->insertTranslation( $translation, $user ); |
| 409 | } else { |
| 410 | $options = []; |
| 411 | if ( $existingTranslation->translation['status'] === self::TRANSLATION_STATUS_DELETED ) { |
| 412 | // Existing translation is deleted, so this is a fresh start of same |
| 413 | // language pair and source title. |
| 414 | $options['freshTranslation'] = true; |
| 415 | } |
| 416 | $translation->translation['id'] = $existingTranslation->getTranslationId(); |
| 417 | $this->updateTranslation( $translation, $options ); |
| 418 | } |
| 419 | } |
| 420 | } |