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| 1 | <?php |
| 2 | |
| 3 | use MediaWiki\Html\Html; |
| 4 | use MediaWiki\MediaWikiServices; |
| 5 | use MediaWiki\ResourceLoader as RL; |
| 6 | |
| 7 | /** |
| 8 | * ResourceLoader module for sending banner choices to the client. |
| 9 | * |
| 10 | * Note: This class has been intentionally left stateless, due to how |
| 11 | * ResourceLoader works. This class has no expectation of having getScript() or |
| 12 | * getModifiedHash() called in the same request. |
| 13 | */ |
| 14 | class CNChoiceDataResourceLoaderModule extends RL\Module { |
| 15 | |
| 16 | private const API_REQUEST_TIMEOUT = 20; |
| 17 | |
| 18 | protected function getChoices( RL\Context $context ) { |
| 19 | $config = $this->getConfig(); |
| 20 | $project = $config->get( 'NoticeProject' ); |
| 21 | $language = $context->getLanguage(); |
| 22 | |
| 23 | // Only fetch the data via the API if $wgCentralNoticeApiUrl is set. |
| 24 | // Otherwise, use the DB. |
| 25 | $apiUrl = $config->get( 'CentralNoticeApiUrl' ); |
| 26 | if ( $apiUrl ) { |
| 27 | $choices = $this->getFromApi( $project, $language ); |
| 28 | |
| 29 | if ( !$choices ) { |
| 30 | wfLogWarning( 'Couldn\'t fetch banner choice data via API. ' . |
| 31 | 'wgCentralNoticeApiUrl = ' . $apiUrl ); |
| 32 | |
| 33 | return []; |
| 34 | } |
| 35 | } else { |
| 36 | $choices = ChoiceDataProvider::getChoices( $project, $language ); |
| 37 | } |
| 38 | |
| 39 | return $choices; |
| 40 | } |
| 41 | |
| 42 | /** |
| 43 | * Get the banner choices data via an API call to the infrastructure wiki. |
| 44 | * If the call fails, we return false. |
| 45 | * |
| 46 | * @param string $project |
| 47 | * @param string $language |
| 48 | * |
| 49 | * @return array|bool |
| 50 | */ |
| 51 | private function getFromApi( $project, $language ) { |
| 52 | $cnApiUrl = $this->getConfig()->get( 'CentralNoticeApiUrl' ); |
| 53 | |
| 54 | // Make the URL |
| 55 | $q = [ |
| 56 | 'action' => 'centralnoticechoicedata', |
| 57 | 'project' => $project, |
| 58 | 'language' => $language, |
| 59 | 'format' => 'json', |
| 60 | 'formatversion' => 2 // Prevents stripping of false values 8p |
| 61 | ]; |
| 62 | |
| 63 | $url = wfAppendQuery( $cnApiUrl, $q ); |
| 64 | |
| 65 | $apiResult = MediaWikiServices::getInstance()->getHttpRequestFactory()->get( |
| 66 | $url, |
| 67 | [ 'timeout' => self::API_REQUEST_TIMEOUT * 0.8 ], |
| 68 | __METHOD__ |
| 69 | ); |
| 70 | |
| 71 | if ( !$apiResult ) { |
| 72 | wfLogWarning( 'Couldn\'t get banner choice data via API.' ); |
| 73 | return false; |
| 74 | } |
| 75 | |
| 76 | $parsedApiResult = FormatJson::parse( $apiResult, FormatJson::FORCE_ASSOC ); |
| 77 | |
| 78 | if ( !$parsedApiResult->isGood() ) { |
| 79 | wfLogWarning( 'Couldn\'t parse banner choice data from API.' ); |
| 80 | return false; |
| 81 | } |
| 82 | |
| 83 | $result = $parsedApiResult->getValue(); |
| 84 | |
| 85 | if ( isset( $result['error'] ) ) { |
| 86 | wfLogWarning( 'Error fetching banner choice data via API: ' . |
| 87 | $result['error']['info'] . ': ' . $result['error']['code'] ); |
| 88 | |
| 89 | return false; |
| 90 | } |
| 91 | |
| 92 | return $result['choices']; |
| 93 | } |
| 94 | |
| 95 | /** |
| 96 | * @inheritDoc |
| 97 | */ |
| 98 | public function getScript( RL\Context $context ) { |
| 99 | $choices = $this->getChoices( $context ); |
| 100 | if ( !$choices ) { |
| 101 | // If there are no choices, this module will have no dependencies, |
| 102 | // but other modules that create mw.centralNotice may be brought |
| 103 | // in elsewhere. Let's the check for its existence here, too, for |
| 104 | // robustness. |
| 105 | return 'mw.centralNotice = ( mw.centralNotice || {} );' . |
| 106 | 'mw.centralNotice.choiceData = [];'; |
| 107 | } else { |
| 108 | |
| 109 | // If there are choices, this module should depend on (at least) |
| 110 | // ext.centralNotice.display, which will create mw.centralNotice. |
| 111 | // However, RL may experience errors that cause these dynamic |
| 112 | // dependencies to not be set as expected; so we check, just in case. |
| 113 | // In such an error state, ext.centralNotice.startUp.js logs to the |
| 114 | // console. |
| 115 | return 'mw.centralNotice = ( mw.centralNotice || {} );' . |
| 116 | 'mw.centralNotice.choiceData = ' . |
| 117 | Html::encodeJsVar( $choices ) . ';'; |
| 118 | } |
| 119 | } |
| 120 | |
| 121 | /** |
| 122 | * @inheritDoc |
| 123 | */ |
| 124 | public function getDependencies( RL\Context $context = null ) { |
| 125 | $cnCampaignMixins = $this->getConfig()->get( 'CentralNoticeCampaignMixins' ); |
| 126 | |
| 127 | // If this method is called with no context argument (the old method |
| 128 | // signature) emit a warning, but don't stop the show. |
| 129 | if ( !$context ) { |
| 130 | wfLogWarning( '$context is required for campaign mixins.' ); |
| 131 | return []; |
| 132 | } |
| 133 | |
| 134 | // Get the choices (possible campaigns and banners) for this user |
| 135 | $choices = $this->getChoices( $context ); |
| 136 | if ( !$choices ) { |
| 137 | // If there are no choices, no dependencies |
| 138 | return []; |
| 139 | } |
| 140 | |
| 141 | // Run through the choices to get all needed mixin RL modules |
| 142 | $dependencies = []; |
| 143 | foreach ( $choices as $choice ) { |
| 144 | foreach ( $choice['mixins'] as $mixinName => $mixinParams ) { |
| 145 | if ( !$cnCampaignMixins[$mixinName]['subscribingModule'] ) { |
| 146 | throw new ConfigException( |
| 147 | "No subscribing module for found campaign mixin {$mixinName}" ); |
| 148 | } |
| 149 | |
| 150 | $dependencies[] = |
| 151 | $cnCampaignMixins[$mixinName]['subscribingModule']; |
| 152 | } |
| 153 | } |
| 154 | |
| 155 | // The display module is needed to process choices |
| 156 | $dependencies[] = 'ext.centralNotice.display'; |
| 157 | |
| 158 | // Since campaigns targeting the user could have the same mixin RL |
| 159 | // modules, remove any duplicates. |
| 160 | return array_unique( $dependencies ); |
| 161 | } |
| 162 | |
| 163 | /** |
| 164 | * @inheritDoc |
| 165 | */ |
| 166 | public function getDefinitionSummary( RL\Context $context ) { |
| 167 | $summary = parent::getDefinitionSummary( $context ); |
| 168 | $summary[] = [ |
| 169 | 'choices' => $this->getChoices( $context ), |
| 170 | ]; |
| 171 | return $summary; |
| 172 | } |
| 173 | } |