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| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License as published by |
| 6 | * the Free Software Foundation; either version 2 of the License, or |
| 7 | * (at your option) any later version. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License along |
| 15 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 16 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 17 | * http://www.gnu.org/copyleft/gpl.html |
| 18 | * |
| 19 | * @file |
| 20 | */ |
| 21 | |
| 22 | namespace MediaWiki\Skins\Vector\FeatureManagement\Requirements; |
| 23 | |
| 24 | use MediaWiki\Config\Config; |
| 25 | use MediaWiki\Extension\BetaFeatures\BetaFeatures; |
| 26 | use MediaWiki\Registration\ExtensionRegistry; |
| 27 | use MediaWiki\Request\WebRequest; |
| 28 | use MediaWiki\Skins\Vector\Constants; |
| 29 | use MediaWiki\Skins\Vector\FeatureManagement\Requirement; |
| 30 | use MediaWiki\User\UserIdentity; |
| 31 | |
| 32 | /** |
| 33 | * The `OverridableConfigRequirement` allows us to define requirements that can override |
| 34 | * configuration like querystring parameters, e.g. |
| 35 | * |
| 36 | * ```lang=php |
| 37 | * $featureManager->registerRequirement( |
| 38 | * new OverridableConfigRequirement( |
| 39 | * $config, |
| 40 | * $user, |
| 41 | * $request, |
| 42 | * MainConfigNames::Sitename, |
| 43 | * 'requirementName', |
| 44 | * 'overrideName', |
| 45 | * 'configTestName', |
| 46 | * ) |
| 47 | * ); |
| 48 | * ``` |
| 49 | * |
| 50 | * registers a requirement that will evaluate to true only when `mediawiki/includes/Setup.php` has |
| 51 | * finished executing (after all service wiring has executed). I.e., every call to |
| 52 | * `Requirement->isMet()` re-interrogates the request, user authentication status, |
| 53 | * and config object for the current state and returns it. Contrast to: |
| 54 | * |
| 55 | * ```lang=php |
| 56 | * $featureManager->registerSimpleRequirement( |
| 57 | * 'requirementName', |
| 58 | * (bool)$config->get( MainConfigNames::Sitename ) |
| 59 | * ); |
| 60 | * ``` |
| 61 | * |
| 62 | * wherein state is evaluated only once at registration time and permanently cached. |
| 63 | * |
| 64 | * NOTE: This API hasn't settled. It may change at any time without warning. Please don't bind to |
| 65 | * it unless you absolutely need to |
| 66 | * |
| 67 | * @package MediaWiki\Skins\Vector\FeatureManagement\Requirements |
| 68 | */ |
| 69 | class OverridableConfigRequirement implements Requirement { |
| 70 | |
| 71 | private Config $config; |
| 72 | |
| 73 | private UserIdentity $user; |
| 74 | |
| 75 | private string $configName; |
| 76 | |
| 77 | private string $requirementName; |
| 78 | |
| 79 | private OverrideableRequirementHelper $helper; |
| 80 | |
| 81 | /** |
| 82 | * This constructor accepts all dependencies needed to determine whether |
| 83 | * the overridable config is enabled for the current user and request. |
| 84 | * |
| 85 | * @param Config $config |
| 86 | * @param UserIdentity $user |
| 87 | * @param WebRequest $request |
| 88 | * @param string $configName Any `Config` key. This name is used to query `$config` state. |
| 89 | * @param string $requirementName The name of the requirement presented to FeatureManager. |
| 90 | */ |
| 91 | public function __construct( |
| 92 | Config $config, |
| 93 | UserIdentity $user, |
| 94 | WebRequest $request, |
| 95 | string $configName, |
| 96 | string $requirementName |
| 97 | ) { |
| 98 | $this->config = $config; |
| 99 | $this->user = $user; |
| 100 | $this->configName = $configName; |
| 101 | $this->requirementName = $requirementName; |
| 102 | $this->helper = new OverrideableRequirementHelper( $request, $requirementName ); |
| 103 | } |
| 104 | |
| 105 | /** |
| 106 | * @inheritDoc |
| 107 | */ |
| 108 | public function getName(): string { |
| 109 | return $this->requirementName; |
| 110 | } |
| 111 | |
| 112 | /** |
| 113 | * Check query parameter to override config or not. |
| 114 | * Then check for AB test value. |
| 115 | * Fallback to config value. |
| 116 | * |
| 117 | * @inheritDoc |
| 118 | */ |
| 119 | public function isMet(): bool { |
| 120 | $isMet = $this->helper->isMet(); |
| 121 | if ( $isMet !== null ) { |
| 122 | return $isMet; |
| 123 | } |
| 124 | |
| 125 | // If AB test is not enabled, fallback to checking config state. |
| 126 | $thisConfig = $this->config->get( $this->configName ); |
| 127 | |
| 128 | // Backwards compatibility with config variables that have been set in production. |
| 129 | if ( is_bool( $thisConfig ) ) { |
| 130 | $thisConfig = [ |
| 131 | 'logged_in' => $thisConfig, |
| 132 | 'logged_out' => $thisConfig, |
| 133 | 'beta' => $thisConfig, |
| 134 | ]; |
| 135 | } elseif ( array_key_exists( 'default', $thisConfig ) ) { |
| 136 | $thisConfig = [ |
| 137 | 'default' => $thisConfig['default'], |
| 138 | ]; |
| 139 | } else { |
| 140 | $thisConfig = [ |
| 141 | 'logged_in' => $thisConfig['logged_in'] ?? false, |
| 142 | 'logged_out' => $thisConfig['logged_out'] ?? false, |
| 143 | 'beta' => $thisConfig['beta'] ?? false, |
| 144 | ]; |
| 145 | } |
| 146 | |
| 147 | // Fallback to config. |
| 148 | $userConfig = array_key_exists( 'default', $thisConfig ) ? |
| 149 | $thisConfig[ 'default' ] : |
| 150 | $thisConfig[ $this->user->isRegistered() ? 'logged_in' : 'logged_out' ]; |
| 151 | // Check if use has enabled beta features |
| 152 | $betaFeatureConfig = array_key_exists( 'beta', $thisConfig ) && $thisConfig[ 'beta' ]; |
| 153 | $betaFeatureEnabled = in_array( $this->configName, Constants::VECTOR_BETA_FEATURES ) && |
| 154 | $betaFeatureConfig && $this->isVector2022BetaFeatureEnabled(); |
| 155 | // If user has enabled beta features, use beta config |
| 156 | return $betaFeatureEnabled ? $betaFeatureConfig : $userConfig; |
| 157 | } |
| 158 | |
| 159 | /** |
| 160 | * Check if user has enabled the Vector 2022 beta features |
| 161 | */ |
| 162 | public function isVector2022BetaFeatureEnabled(): bool { |
| 163 | return ExtensionRegistry::getInstance()->isLoaded( 'BetaFeatures' ) && |
| 164 | /* @phan-suppress-next-line PhanUndeclaredClassMethod */ |
| 165 | BetaFeatures::isFeatureEnabled( |
| 166 | $this->user, |
| 167 | Constants::VECTOR_2022_BETA_KEY |
| 168 | ); |
| 169 | } |
| 170 | } |