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| 1 | <?php |
| 2 | |
| 3 | namespace PageImages; |
| 4 | |
| 5 | use ApiBase; |
| 6 | use ApiQuery; |
| 7 | use ApiQueryBase; |
| 8 | use MediaWiki\Title\Title; |
| 9 | use RepoGroup; |
| 10 | use Wikimedia\ParamValidator\ParamValidator; |
| 11 | use Wikimedia\ParamValidator\TypeDef\IntegerDef; |
| 12 | |
| 13 | /** |
| 14 | * Expose image information for a page via a new prop=pageimages API. |
| 15 | * |
| 16 | * @see https://www.mediawiki.org/wiki/Extension:PageImages#API |
| 17 | * |
| 18 | * @license WTFPL |
| 19 | * @author Max Semenik |
| 20 | * @author Ryan Kaldari |
| 21 | * @author Yuvi Panda |
| 22 | * @author Sam Smith |
| 23 | */ |
| 24 | class ApiQueryPageImages extends ApiQueryBase { |
| 25 | /** @var RepoGroup */ |
| 26 | private $repoGroup; |
| 27 | |
| 28 | /** |
| 29 | * @param ApiQuery $query API query module |
| 30 | * @param string $moduleName Name of this query module |
| 31 | * @param RepoGroup $repoGroup |
| 32 | */ |
| 33 | public function __construct( |
| 34 | ApiQuery $query, |
| 35 | $moduleName, |
| 36 | RepoGroup $repoGroup |
| 37 | ) { |
| 38 | parent::__construct( $query, $moduleName, 'pi' ); |
| 39 | $this->repoGroup = $repoGroup; |
| 40 | } |
| 41 | |
| 42 | /** |
| 43 | * Gets the set of titles to get page images for. |
| 44 | * |
| 45 | * Note well that the set of titles comprises the set of "good" titles |
| 46 | * (see {@see ApiPageSet::getGoodTitles}) union the set of "missing" |
| 47 | * titles in the File namespace that might correspond to foreign files. |
| 48 | * The latter are included because titles in the File namespace are |
| 49 | * expected to be found with {@see \RepoGroup::findFile}. |
| 50 | * |
| 51 | * @return Title[] A map of page ID, which will be negative in the case |
| 52 | * of missing titles in the File namespace, to Title object |
| 53 | */ |
| 54 | protected function getTitles() { |
| 55 | $pageSet = $this->getPageSet(); |
| 56 | $titles = $pageSet->getGoodTitles(); |
| 57 | |
| 58 | // T98791: We want foreign files to be treated like local files |
| 59 | // in #execute, so include the set of missing filespace pages, |
| 60 | // which were initially rejected in ApiPageSet#execute. |
| 61 | $missingTitles = $pageSet->getMissingTitlesByNamespace(); |
| 62 | $missingFileTitles = $missingTitles[NS_FILE] ?? []; |
| 63 | |
| 64 | // $titles is a map of ID to title object, which is ideal, |
| 65 | // whereas $missingFileTitles is a map of title text to ID. |
| 66 | // Do not use array_merge here as it doesn't preserve keys. |
| 67 | foreach ( $missingFileTitles as $dbkey => $id ) { |
| 68 | $titles[$id] = Title::makeTitle( NS_FILE, $dbkey ); |
| 69 | } |
| 70 | |
| 71 | return $titles; |
| 72 | } |
| 73 | |
| 74 | /** |
| 75 | * Evaluates the parameters, performs the requested retrieval of page images, |
| 76 | * and sets up the result |
| 77 | */ |
| 78 | public function execute() { |
| 79 | $params = $this->extractRequestParams(); |
| 80 | $prop = array_flip( $params['prop'] ); |
| 81 | if ( !count( $prop ) ) { |
| 82 | $this->dieWithError( |
| 83 | [ 'apierror-paramempty', $this->encodeParamName( 'prop' ) ], 'noprop' |
| 84 | ); |
| 85 | } |
| 86 | |
| 87 | $allTitles = $this->getTitles(); |
| 88 | |
| 89 | if ( count( $allTitles ) === 0 ) { |
| 90 | return; |
| 91 | } |
| 92 | |
| 93 | // Find the offset based on the continue param |
| 94 | $offset = 0; |
| 95 | if ( isset( $params['continue'] ) ) { |
| 96 | // Get the position (not the key) of the 'continue' page within the |
| 97 | // array of titles. Set this as the offset. |
| 98 | $pageIds = array_keys( $allTitles ); |
| 99 | $offset = array_search( intval( $params['continue'] ), $pageIds ); |
| 100 | // If the 'continue' page wasn't found, die with error |
| 101 | $this->dieContinueUsageIf( !$offset ); |
| 102 | } |
| 103 | |
| 104 | $limit = $params['limit']; |
| 105 | // Slice the part of the array we want to find images for |
| 106 | $titles = array_slice( $allTitles, $offset, $limit, true ); |
| 107 | |
| 108 | // Get the next item in the title array and use it to set the continue value |
| 109 | $nextItemArray = array_slice( $allTitles, $offset + $limit, 1, true ); |
| 110 | if ( $nextItemArray ) { |
| 111 | $this->setContinueEnumParameter( 'continue', key( $nextItemArray ) ); |
| 112 | } |
| 113 | |
| 114 | // Find any titles in the file namespace so we can handle those separately |
| 115 | $filePageTitles = []; |
| 116 | foreach ( $titles as $id => $title ) { |
| 117 | if ( $title->inNamespace( NS_FILE ) ) { |
| 118 | $filePageTitles[$id] = $title; |
| 119 | unset( $titles[$id] ); |
| 120 | } |
| 121 | } |
| 122 | |
| 123 | $size = $params['thumbsize']; |
| 124 | $lang = $params['langcode']; |
| 125 | // Extract page images from the page_props table |
| 126 | if ( count( $titles ) > 0 ) { |
| 127 | $this->addTables( 'page_props' ); |
| 128 | $this->addFields( [ 'pp_page', 'pp_propname', 'pp_value' ] ); |
| 129 | $this->addWhere( [ 'pp_page' => array_keys( $titles ), |
| 130 | 'pp_propname' => PageImages::getPropNames( $params['license'] ) ] ); |
| 131 | |
| 132 | $res = $this->select( __METHOD__ ); |
| 133 | |
| 134 | $buffer = []; |
| 135 | $propNameAny = PageImages::getPropName( false ); |
| 136 | foreach ( $res as $row ) { |
| 137 | $pageId = $row->pp_page; |
| 138 | if ( !array_key_exists( $pageId, $buffer ) || $row->pp_propname === $propNameAny ) { |
| 139 | $buffer[$pageId] = $row; |
| 140 | } |
| 141 | } |
| 142 | |
| 143 | foreach ( $buffer as $pageId => $row ) { |
| 144 | $fileName = $row->pp_value; |
| 145 | $this->setResultValues( $prop, $pageId, $fileName, $size, $lang ); |
| 146 | } |
| 147 | // End page props image extraction |
| 148 | } |
| 149 | |
| 150 | // Extract images from file namespace pages. In this case we just use |
| 151 | // the file itself rather than searching for a page_image. (Bug 50252) |
| 152 | foreach ( $filePageTitles as $pageId => $title ) { |
| 153 | $fileName = $title->getDBkey(); |
| 154 | $this->setResultValues( $prop, $pageId, $fileName, $size, $lang ); |
| 155 | } |
| 156 | } |
| 157 | |
| 158 | /** |
| 159 | * Get the cache mode for the data generated by this module |
| 160 | * |
| 161 | * @param array $params Ignored parameters |
| 162 | * @return string Always returns "public" |
| 163 | */ |
| 164 | public function getCacheMode( $params ) { |
| 165 | return 'public'; |
| 166 | } |
| 167 | |
| 168 | /** |
| 169 | * For a given page, set API return values for thumbnail and pageimage as needed |
| 170 | * |
| 171 | * @param array $prop The prop values from the API request |
| 172 | * @param int $pageId The ID of the page |
| 173 | * @param string $fileName The name of the file to transform |
| 174 | * @param int $size The thumbsize value from the API request |
| 175 | * @param string $lang The language code from the API request |
| 176 | */ |
| 177 | protected function setResultValues( array $prop, $pageId, $fileName, $size, $lang ) { |
| 178 | $vals = []; |
| 179 | if ( isset( $prop['thumbnail'] ) || isset( $prop['original'] ) ) { |
| 180 | $file = $this->repoGroup->findFile( $fileName ); |
| 181 | if ( $file ) { |
| 182 | if ( isset( $prop['thumbnail'] ) ) { |
| 183 | $thumb = $file->transform( [ |
| 184 | 'width' => $size, |
| 185 | 'lang' => $lang |
| 186 | ] ); |
| 187 | if ( $thumb && $thumb->getUrl() ) { |
| 188 | // You can request a thumb 1000x larger than the original |
| 189 | // which (in case of bitmap original) will return a Thumb object |
| 190 | // that will lie about its size but have the original as an image. |
| 191 | $reportedSize = $thumb->fileIsSource() ? $file : $thumb; |
| 192 | $vals['thumbnail'] = [ |
| 193 | 'source' => wfExpandUrl( $thumb->getUrl(), PROTO_CURRENT ), |
| 194 | 'width' => $reportedSize->getWidth(), |
| 195 | 'height' => $reportedSize->getHeight(), |
| 196 | ]; |
| 197 | } |
| 198 | } |
| 199 | |
| 200 | if ( isset( $prop['original'] ) ) { |
| 201 | $originalSize = [ |
| 202 | 'width' => $file->getWidth(), |
| 203 | 'height' => $file->getHeight() |
| 204 | ]; |
| 205 | if ( $lang ) { |
| 206 | $file = $file->transform( [ |
| 207 | 'lang' => $lang, |
| 208 | 'width' => $originalSize['width'], |
| 209 | 'height' => $originalSize['height'] |
| 210 | ] ); |
| 211 | } |
| 212 | $original_url = wfExpandUrl( $file->getUrl(), PROTO_CURRENT ); |
| 213 | |
| 214 | $vals['original'] = [ |
| 215 | 'source' => $original_url, |
| 216 | 'width' => $originalSize['width'], |
| 217 | 'height' => $originalSize['height'] |
| 218 | ]; |
| 219 | } |
| 220 | } |
| 221 | } |
| 222 | |
| 223 | if ( isset( $prop['name'] ) ) { |
| 224 | $vals['pageimage'] = $fileName; |
| 225 | } |
| 226 | |
| 227 | $this->getResult()->addValue( [ 'query', 'pages' ], $pageId, $vals ); |
| 228 | } |
| 229 | |
| 230 | /** |
| 231 | * Return an array describing all possible parameters to this module |
| 232 | * @return array |
| 233 | */ |
| 234 | public function getAllowedParams() { |
| 235 | return [ |
| 236 | 'prop' => [ |
| 237 | ParamValidator::PARAM_TYPE => [ 'thumbnail', 'name', 'original' ], |
| 238 | ParamValidator::PARAM_ISMULTI => true, |
| 239 | ParamValidator::PARAM_DEFAULT => 'thumbnail|name', |
| 240 | ApiBase::PARAM_HELP_MSG_PER_VALUE => [], |
| 241 | ], |
| 242 | 'thumbsize' => [ |
| 243 | ParamValidator::PARAM_TYPE => 'integer', |
| 244 | ParamValidator::PARAM_DEFAULT => 50, |
| 245 | ], |
| 246 | 'limit' => [ |
| 247 | ParamValidator::PARAM_DEFAULT => 50, |
| 248 | ParamValidator::PARAM_TYPE => 'limit', |
| 249 | IntegerDef::PARAM_MIN => 1, |
| 250 | IntegerDef::PARAM_MAX => 50, |
| 251 | IntegerDef::PARAM_MAX2 => 100, |
| 252 | ], |
| 253 | 'license' => [ |
| 254 | ParamValidator::PARAM_TYPE => [ PageImages::LICENSE_FREE, PageImages::LICENSE_ANY ], |
| 255 | ParamValidator::PARAM_ISMULTI => false, |
| 256 | ParamValidator::PARAM_DEFAULT => $this->getConfig()->get( 'PageImagesAPIDefaultLicense' ), |
| 257 | ApiBase::PARAM_HELP_MSG_PER_VALUE => [], |
| 258 | ], |
| 259 | 'continue' => [ |
| 260 | ParamValidator::PARAM_TYPE => 'integer', |
| 261 | ApiBase::PARAM_HELP_MSG => 'api-help-param-continue', |
| 262 | ], |
| 263 | 'langcode' => [ |
| 264 | ParamValidator::PARAM_TYPE => 'string', |
| 265 | ParamValidator::PARAM_DEFAULT => null |
| 266 | ] |
| 267 | ]; |
| 268 | } |
| 269 | |
| 270 | /** |
| 271 | * @inheritDoc |
| 272 | */ |
| 273 | protected function getExamplesMessages() { |
| 274 | return [ |
| 275 | 'action=query&prop=pageimages&titles=Albert%20Einstein&pithumbsize=100' => |
| 276 | 'apihelp-query+pageimages-example-1', |
| 277 | ]; |
| 278 | } |
| 279 | |
| 280 | /** |
| 281 | * @see ApiBase::getHelpUrls() |
| 282 | * @return string |
| 283 | */ |
| 284 | public function getHelpUrls() { |
| 285 | return "https://www.mediawiki.org/wiki/Special:MyLanguage/Extension:PageImages#API"; |
| 286 | } |
| 287 | |
| 288 | } |