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| 1 | <?php |
| 2 | |
| 3 | namespace AutoModerator\Config; |
| 4 | |
| 5 | use MediaWiki\Config\Config; |
| 6 | use MediaWiki\Config\ConfigException; |
| 7 | use MediaWiki\Settings\Config\MergeStrategy; |
| 8 | |
| 9 | /** |
| 10 | * Config loader for wiki page config |
| 11 | * |
| 12 | * This class consults the allow list |
| 13 | * in AutoModeratorWikiConfigLoader::ALLOW_LIST, and runs |
| 14 | * WikiPageConfig if requested config variable is there. Otherwise, |
| 15 | * it throws an exception. |
| 16 | * |
| 17 | * Fallback to GlobalVarConfig is implemented, so developer setup |
| 18 | * works without any config page, and also to not let wikis break |
| 19 | * AutoModerator setup by removing an arbitrary config variable. |
| 20 | */ |
| 21 | class AutoModeratorWikiConfigLoader implements Config, ICustomReadConstants { |
| 22 | |
| 23 | public const ALLOW_LIST = [ |
| 24 | 'AutoModeratorEnableRevisionCheck', |
| 25 | 'AutoModeratorFalsePositivePageTitle', |
| 26 | 'AutoModeratorUseEditFlagMinor', |
| 27 | 'AutoModeratorRevertTalkPageMessageEnabled', |
| 28 | 'AutoModeratorRevertTalkPageMessageRegisteredUsersOnly', |
| 29 | 'AutoModeratorEnableBotFlag', |
| 30 | 'AutoModeratorSkipUserRights', |
| 31 | 'AutoModeratorCautionLevel', |
| 32 | 'AutoModeratorEnableUserRevertsPerPage', |
| 33 | 'AutoModeratorUserRevertsPerPage', |
| 34 | 'AutoModeratorHelpPageLink', |
| 35 | 'AutoModeratorMultilingualConfigEnableRevisionCheck', |
| 36 | 'AutoModeratorMultilingualConfigFalsePositivePageTitle', |
| 37 | 'AutoModeratorMultilingualConfigUseEditFlagMinor', |
| 38 | 'AutoModeratorMultilingualConfigRevertTalkPageMessageEnabled', |
| 39 | 'AutoModeratorMultilingualConfigRevertTalkPageMessageRegisteredUsersOnly', |
| 40 | 'AutoModeratorMultilingualConfigEnableBotFlag', |
| 41 | 'AutoModeratorMultilingualConfigSkipUserRights', |
| 42 | 'AutoModeratorMultilingualConfigCautionLevel', |
| 43 | 'AutoModeratorMultilingualConfigEnableUserRevertsPerPage', |
| 44 | 'AutoModeratorMultilingualConfigUserRevertsPerPage', |
| 45 | 'AutoModeratorMultilingualConfigHelpPageLink', |
| 46 | 'AutoModeratorMultilingualConfigEnableLanguageAgnostic', |
| 47 | 'AutoModeratorMultilingualConfigEnableMultilingual', |
| 48 | 'AutoModeratorMultilingualConfigMultilingualThreshold' |
| 49 | ]; |
| 50 | |
| 51 | /** |
| 52 | * Map of variable name => merge strategy. Defaults to replace. |
| 53 | * @see MergeStrategy |
| 54 | */ |
| 55 | public const MERGE_STRATEGIES = []; |
| 56 | |
| 57 | public function __construct( |
| 58 | private readonly WikiPageConfig $wikiPageConfig, |
| 59 | private readonly Config $globalVarConfig, |
| 60 | ) { |
| 61 | } |
| 62 | |
| 63 | /** |
| 64 | * @param string $name |
| 65 | * @return bool |
| 66 | */ |
| 67 | private function variableIsAllowed( $name ) { |
| 68 | return in_array( $name, self::ALLOW_LIST ); |
| 69 | } |
| 70 | |
| 71 | /** |
| 72 | * Determine if on-wiki config is enabled or not |
| 73 | * |
| 74 | * If this returns false, all calls to get()/has() will be immediately |
| 75 | * forwarded to GlobalVarConfig, as if there was no on-wiki config. |
| 76 | * |
| 77 | * @return bool |
| 78 | */ |
| 79 | public function isWikiConfigEnabled(): bool { |
| 80 | return (bool)$this->globalVarConfig->get( 'AutoModeratorEnableWikiConfig' ); |
| 81 | } |
| 82 | |
| 83 | /** |
| 84 | * @inheritDoc |
| 85 | */ |
| 86 | public function get( $name ) { |
| 87 | return $this->getWithFlags( $name ); |
| 88 | } |
| 89 | |
| 90 | /** |
| 91 | * @param string $name |
| 92 | * @param int $flags bit field, see IDBAccessObject::READ_XXX |
| 93 | * @return mixed Config value |
| 94 | */ |
| 95 | public function getWithFlags( string $name, int $flags = 0 ) { |
| 96 | if ( !$this->isWikiConfigEnabled() ) { |
| 97 | return $this->globalVarConfig->get( $name ); |
| 98 | } |
| 99 | |
| 100 | if ( !$this->variableIsAllowed( $name ) ) { |
| 101 | throw new ConfigException( 'Config key cannot be retrieved via AutoModeratorWikiConfigLoader' ); |
| 102 | } |
| 103 | |
| 104 | if ( $this->wikiPageConfig->hasWithFlags( $name, $flags ) ) { |
| 105 | $wikiValue = $this->wikiPageConfig->getWithFlags( $name, $flags ); |
| 106 | $mergeStrategy = self::MERGE_STRATEGIES[$name] ?? null; |
| 107 | if ( !$mergeStrategy || !$this->globalVarConfig->has( $name ) ) { |
| 108 | return $wikiValue; |
| 109 | } |
| 110 | $globalValue = $this->globalVarConfig->get( $name ); |
| 111 | return MergeStrategy::newFromName( $mergeStrategy )->merge( $globalValue, $wikiValue ); |
| 112 | } |
| 113 | |
| 114 | if ( $this->globalVarConfig->has( $name ) ) { |
| 115 | return $this->globalVarConfig->get( $name ); |
| 116 | } |
| 117 | |
| 118 | throw new ConfigException( 'Config key was not found in AutoModeratorWikiConfigLoader' ); |
| 119 | } |
| 120 | |
| 121 | /** |
| 122 | * @inheritDoc |
| 123 | */ |
| 124 | public function has( $name ): bool { |
| 125 | return $this->hasWithFlags( $name ); |
| 126 | } |
| 127 | |
| 128 | /** |
| 129 | * @param string $name |
| 130 | * @param int $flags |
| 131 | * @return bool |
| 132 | */ |
| 133 | public function hasWithFlags( string $name, int $flags = 0 ): bool { |
| 134 | if ( !$this->isWikiConfigEnabled() ) { |
| 135 | return $this->globalVarConfig->has( $name ); |
| 136 | } |
| 137 | |
| 138 | return $this->variableIsAllowed( $name ) && ( |
| 139 | $this->wikiPageConfig->hasWithFlags( $name, $flags ) || |
| 140 | $this->globalVarConfig->has( $name ) |
| 141 | ); |
| 142 | } |
| 143 | } |