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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\Extension\FeaturedFeeds; |
| 4 | |
| 5 | use Language; |
| 6 | use MediaWiki\MediaWikiServices; |
| 7 | use MediaWiki\Revision\SlotRecord; |
| 8 | use MediaWiki\SpecialPage\SpecialPage; |
| 9 | use MediaWiki\Title\Title; |
| 10 | use MediaWiki\Utils\MWTimestamp; |
| 11 | use Message; |
| 12 | use Parser; |
| 13 | use ParserOptions; |
| 14 | use TextContent; |
| 15 | use UnexpectedValueException; |
| 16 | |
| 17 | class FeaturedFeedChannel { |
| 18 | /** |
| 19 | * Class version, increment it when changing class internals. |
| 20 | */ |
| 21 | public const VERSION = 2; |
| 22 | |
| 23 | /** |
| 24 | * @var Parser |
| 25 | */ |
| 26 | private static $parser; |
| 27 | private $languageCode; |
| 28 | |
| 29 | private $name; |
| 30 | private $options; |
| 31 | /** |
| 32 | * @var FeaturedFeedItem[]|false |
| 33 | */ |
| 34 | private $items = false; |
| 35 | private $page = false; |
| 36 | private $entryName = false; |
| 37 | private $titleForParse = false; |
| 38 | |
| 39 | public $title = false; |
| 40 | public $shortTitle = false; |
| 41 | public $description = false; |
| 42 | |
| 43 | /** |
| 44 | * @param string $name |
| 45 | * @param array $options |
| 46 | * @param string $languageCode |
| 47 | */ |
| 48 | public function __construct( $name, $options, $languageCode ) { |
| 49 | if ( !self::$parser ) { |
| 50 | self::$parser = MediaWikiServices::getInstance()->getParserFactory()->create(); |
| 51 | } |
| 52 | |
| 53 | $this->name = $name; |
| 54 | $this->options = $options; |
| 55 | if ( $options['inUserLanguage'] ) { |
| 56 | $this->languageCode = $languageCode; |
| 57 | } else { |
| 58 | $contLang = MediaWikiServices::getInstance()->getContentLanguage(); |
| 59 | $this->languageCode = $contLang->getCode(); |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | public static function fromArray( array $array ) { |
| 64 | $channel = new FeaturedFeedChannel( |
| 65 | $array['name'], |
| 66 | $array['options'], |
| 67 | $array['lang'] |
| 68 | ); |
| 69 | |
| 70 | if ( $array['items'] !== false ) { |
| 71 | $channel->items = []; |
| 72 | foreach ( $array['items'] as $item ) { |
| 73 | $channel->items[] = FeaturedFeedItem::fromArray( $item ); |
| 74 | } |
| 75 | } |
| 76 | |
| 77 | $channel->page = $array['page']; |
| 78 | $channel->entryName = $array['entryName']; |
| 79 | $channel->titleForParse = $array['titleForParse']; |
| 80 | $channel->title = $array['title']; |
| 81 | $channel->shortTitle = $array['shortTitle']; |
| 82 | $channel->description = $array['description']; |
| 83 | |
| 84 | return $channel; |
| 85 | } |
| 86 | |
| 87 | public function toArray(): array { |
| 88 | $items = false; |
| 89 | if ( $this->items !== false ) { |
| 90 | $items = []; |
| 91 | |
| 92 | foreach ( $this->items as $item ) { |
| 93 | $items[] = $item->toArray(); |
| 94 | } |
| 95 | } |
| 96 | |
| 97 | return [ |
| 98 | 'name' => $this->name, |
| 99 | 'options' => $this->options, |
| 100 | 'lang' => $this->languageCode, |
| 101 | 'items' => $items, |
| 102 | 'page' => $this->page, |
| 103 | 'entryName' => $this->entryName, |
| 104 | 'titleForParse' => $this->titleForParse, |
| 105 | 'title' => $this->title, |
| 106 | 'shortTitle' => $this->shortTitle, |
| 107 | 'description' => $this->description, |
| 108 | ]; |
| 109 | } |
| 110 | |
| 111 | /** |
| 112 | * @param string $key |
| 113 | * @return Message |
| 114 | */ |
| 115 | private function msg( $key ) { |
| 116 | return wfMessage( $key )->inLanguage( $this->languageCode ); |
| 117 | } |
| 118 | |
| 119 | /** |
| 120 | * @return bool |
| 121 | */ |
| 122 | public function isOK() { |
| 123 | $this->init(); |
| 124 | return $this->page !== false; |
| 125 | } |
| 126 | |
| 127 | /** |
| 128 | * Returns language used by the feed |
| 129 | * @return Language |
| 130 | */ |
| 131 | public function getLanguage() { |
| 132 | return MediaWikiServices::getInstance()->getLanguageFactory() |
| 133 | ->getLanguage( $this->languageCode ); |
| 134 | } |
| 135 | |
| 136 | public function init() { |
| 137 | global $wgLanguageCode; |
| 138 | if ( $this->title !== false ) { |
| 139 | return; |
| 140 | } |
| 141 | $this->title = $this->msg( $this->options['title'] )->text(); |
| 142 | $this->shortTitle = $this->msg( $this->options['short-title'] )->text(); |
| 143 | $this->description = $this->msg( $this->options['description'] )->text(); |
| 144 | $pageMsg = $this->msg( $this->options['page'] )->params( $this->languageCode ); |
| 145 | if ( $pageMsg->isDisabled() ) { |
| 146 | // fall back manually, messages can be existent but empty |
| 147 | if ( $this->languageCode != $wgLanguageCode ) { |
| 148 | $pageMsg = wfMessage( $this->options['page'] ) |
| 149 | ->params( $this->languageCode ) |
| 150 | ->inContentLanguage(); |
| 151 | } |
| 152 | } |
| 153 | if ( $pageMsg->isDisabled() ) { |
| 154 | return; |
| 155 | } |
| 156 | $this->page = $pageMsg->plain(); |
| 157 | $this->page = str_replace( '$LANGUAGE', $this->languageCode, $this->page ); |
| 158 | $this->entryName = $this->msg( $this->options['entryName'] )->plain(); |
| 159 | } |
| 160 | |
| 161 | /** |
| 162 | * @return FeaturedFeedItem[] |
| 163 | */ |
| 164 | public function getFeedItems() { |
| 165 | $this->init(); |
| 166 | if ( $this->items === false ) { |
| 167 | $this->items = []; |
| 168 | switch ( $this->options['frequency'] ) { |
| 169 | case 'daily': |
| 170 | $ratio = 1; |
| 171 | $baseTime = FeaturedFeeds::todaysStart(); |
| 172 | break; |
| 173 | case 'weekly': |
| 174 | $ratio = 7; |
| 175 | $baseTime = FeaturedFeeds::startOfThisWeek(); |
| 176 | break; |
| 177 | default: |
| 178 | throw new UnexpectedValueException( "'{$this->options['frequency']}' is not a valid frequency" ); |
| 179 | } |
| 180 | for ( $i = 1 - $this->options['limit']; $i <= 0; $i++ ) { |
| 181 | $timestamp = $baseTime + $i * $ratio * 24 * 3600; |
| 182 | $item = $this->getFeedItem( $timestamp ); |
| 183 | if ( $item ) { |
| 184 | $this->items[] = $item; |
| 185 | } |
| 186 | } |
| 187 | } |
| 188 | return $this->items; |
| 189 | } |
| 190 | |
| 191 | /** |
| 192 | * |
| 193 | * @param int $date |
| 194 | * @return FeaturedFeedItem|false |
| 195 | */ |
| 196 | public function getFeedItem( $date ) { |
| 197 | $ts = new MWTimestamp( $date ); |
| 198 | $timestamp = $ts->getTimestamp( TS_MW ); |
| 199 | $parserOptions = ParserOptions::newFromAnon(); |
| 200 | $parserOptions->setTimestamp( $timestamp ); |
| 201 | $parserOptions->setUserLang( $this->getLanguage() ); |
| 202 | |
| 203 | if ( $this->titleForParse === false ) { |
| 204 | // parsing with such title makes stuff like {{CURRENTMONTH}} localised |
| 205 | $this->titleForParse = Title::newFromText( 'MediaWiki:Dummy/' . $this->languageCode ); |
| 206 | } |
| 207 | |
| 208 | $titleText = self::$parser->transformMsg( |
| 209 | $this->page, $parserOptions, $this->titleForParse ); |
| 210 | $title = Title::newFromText( $titleText ); |
| 211 | if ( !$title ) { |
| 212 | return false; |
| 213 | } |
| 214 | $rev = MediaWikiServices::getInstance()->getRevisionLookup() |
| 215 | ->getRevisionByTitle( $title ); |
| 216 | if ( !$rev ) { |
| 217 | // Page does not exist |
| 218 | return false; |
| 219 | } |
| 220 | |
| 221 | $content = $rev->getContent( SlotRecord::MAIN ); |
| 222 | $text = ( $content instanceof TextContent ) ? $content->getText() : null; |
| 223 | |
| 224 | if ( !$text ) { |
| 225 | return false; |
| 226 | } |
| 227 | $text = self::$parser->parse( $text, $title, $parserOptions )->getText( [ |
| 228 | 'enableSectionEditLinks' => false, |
| 229 | ] ); |
| 230 | $url = SpecialPage::getTitleFor( 'FeedItem', |
| 231 | $this->name . '/' . $timestamp . '/' . $this->languageCode |
| 232 | )->getFullURL(); |
| 233 | |
| 234 | return new FeaturedFeedItem( |
| 235 | self::$parser->transformMsg( $this->entryName, $parserOptions, $this->titleForParse ), |
| 236 | wfExpandUrl( $url ), |
| 237 | $text, |
| 238 | $timestamp |
| 239 | ); |
| 240 | } |
| 241 | |
| 242 | /** |
| 243 | * Returns a URL to the feed |
| 244 | * |
| 245 | * @param string $format Feed format, 'rss' or 'atom' |
| 246 | * @return string |
| 247 | */ |
| 248 | public function getURL( $format ) { |
| 249 | $contLang = MediaWikiServices::getInstance()->getContentLanguage(); |
| 250 | |
| 251 | $options = [ |
| 252 | 'action' => 'featuredfeed', |
| 253 | 'feed' => $this->name, |
| 254 | 'feedformat' => $format, |
| 255 | ]; |
| 256 | if ( $this->options['inUserLanguage'] && $this->languageCode != $contLang->getCode() ) { |
| 257 | $options['language'] = $this->languageCode; |
| 258 | } |
| 259 | return wfScript( 'api' ) . '?' . wfArrayToCgi( $options ); |
| 260 | } |
| 261 | } |