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| 1 | <?php |
| 2 | |
| 3 | declare( strict_types=1 ); |
| 4 | |
| 5 | namespace MediaWiki\Extension\CampaignEvents\Participants; |
| 6 | |
| 7 | use MediaWiki\Extension\CampaignEvents\Event\ExistingEventRegistration; |
| 8 | use MediaWiki\Extension\CampaignEvents\EventPage\EventPageCacheUpdater; |
| 9 | use MediaWiki\Extension\CampaignEvents\MWEntity\CampaignsCentralUserLookup; |
| 10 | use MediaWiki\Extension\CampaignEvents\MWEntity\CentralUser; |
| 11 | use MediaWiki\Extension\CampaignEvents\MWEntity\ICampaignsAuthority; |
| 12 | use MediaWiki\Extension\CampaignEvents\MWEntity\UserNotGlobalException; |
| 13 | use MediaWiki\Extension\CampaignEvents\Permissions\PermissionChecker; |
| 14 | use MediaWiki\Extension\CampaignEvents\TrackingTool\TrackingToolEventWatcher; |
| 15 | use MediaWiki\Permissions\PermissionStatus; |
| 16 | use StatusValue; |
| 17 | |
| 18 | class UnregisterParticipantCommand { |
| 19 | public const SERVICE_NAME = 'CampaignEventsUnregisterParticipantCommand'; |
| 20 | |
| 21 | public const CAN_UNREGISTER = 0; |
| 22 | public const CANNOT_UNREGISTER_DELETED = 1; |
| 23 | public const DO_NOT_INVERT_USERS = false; |
| 24 | public const INVERT_USERS = true; |
| 25 | |
| 26 | private ParticipantsStore $participantsStore; |
| 27 | private PermissionChecker $permissionChecker; |
| 28 | private CampaignsCentralUserLookup $centralUserLookup; |
| 29 | private EventPageCacheUpdater $eventPageCacheUpdater; |
| 30 | private TrackingToolEventWatcher $trackingToolEventWatcher; |
| 31 | |
| 32 | /** |
| 33 | * @param ParticipantsStore $participantsStore |
| 34 | * @param PermissionChecker $permissionChecker |
| 35 | * @param CampaignsCentralUserLookup $centralUserLookup |
| 36 | * @param EventPageCacheUpdater $eventPageCacheUpdater |
| 37 | * @param TrackingToolEventWatcher $trackingToolEventWatcher |
| 38 | */ |
| 39 | public function __construct( |
| 40 | ParticipantsStore $participantsStore, |
| 41 | PermissionChecker $permissionChecker, |
| 42 | CampaignsCentralUserLookup $centralUserLookup, |
| 43 | EventPageCacheUpdater $eventPageCacheUpdater, |
| 44 | TrackingToolEventWatcher $trackingToolEventWatcher |
| 45 | ) { |
| 46 | $this->participantsStore = $participantsStore; |
| 47 | $this->permissionChecker = $permissionChecker; |
| 48 | $this->centralUserLookup = $centralUserLookup; |
| 49 | $this->eventPageCacheUpdater = $eventPageCacheUpdater; |
| 50 | $this->trackingToolEventWatcher = $trackingToolEventWatcher; |
| 51 | } |
| 52 | |
| 53 | /** |
| 54 | * @param ExistingEventRegistration $registration |
| 55 | * @param ICampaignsAuthority $performer |
| 56 | * @return StatusValue Good if everything went fine, fatal with errors otherwise. If good, the value shall be |
| 57 | * true if the user was actively registered, and false if they unregistered or had never registered. |
| 58 | * Will be a PermissionStatus for permissions-related errors. |
| 59 | */ |
| 60 | public function unregisterIfAllowed( |
| 61 | ExistingEventRegistration $registration, |
| 62 | ICampaignsAuthority $performer |
| 63 | ): StatusValue { |
| 64 | $permStatus = $this->authorizeUnregistration( $performer ); |
| 65 | if ( !$permStatus->isGood() ) { |
| 66 | return $permStatus; |
| 67 | } |
| 68 | return $this->unregisterUnsafe( $registration, $performer ); |
| 69 | } |
| 70 | |
| 71 | /** |
| 72 | * @param ICampaignsAuthority $performer |
| 73 | * @return PermissionStatus |
| 74 | */ |
| 75 | private function authorizeUnregistration( ICampaignsAuthority $performer ): PermissionStatus { |
| 76 | if ( !$this->permissionChecker->userCanCancelRegistration( $performer ) ) { |
| 77 | return PermissionStatus::newFatal( 'campaignevents-unregister-not-allowed' ); |
| 78 | } |
| 79 | return PermissionStatus::newGood(); |
| 80 | } |
| 81 | |
| 82 | /** |
| 83 | * @param ExistingEventRegistration $registration |
| 84 | * @return StatusValue Statusvalue where value is self::CAN_UNREGISTER or self::CANNOT_UNREGISTER_DELETED constant. |
| 85 | */ |
| 86 | public static function checkIsUnregistrationAllowed( |
| 87 | ExistingEventRegistration $registration, |
| 88 | bool $userIsSelf = true ): StatusValue { |
| 89 | if ( $registration->getDeletionTimestamp() !== null ) { |
| 90 | $msg = $userIsSelf |
| 91 | ? 'campaignevents-unregister-registration-deleted' |
| 92 | : 'campaignevents-unregister-participants-registration-deleted'; |
| 93 | return StatusValue::newFatal( $msg )->setResult( false, self::CANNOT_UNREGISTER_DELETED ); |
| 94 | } |
| 95 | return StatusValue::newGood( self::CAN_UNREGISTER ); |
| 96 | } |
| 97 | |
| 98 | /** |
| 99 | * @param ExistingEventRegistration $registration |
| 100 | * @param ICampaignsAuthority $performer |
| 101 | * @return StatusValue |
| 102 | */ |
| 103 | public function unregisterUnsafe( |
| 104 | ExistingEventRegistration $registration, |
| 105 | ICampaignsAuthority $performer |
| 106 | ): StatusValue { |
| 107 | $unregistrationAllowedVal = self::checkIsUnregistrationAllowed( $registration ); |
| 108 | if ( !$unregistrationAllowedVal->isGood() ) { |
| 109 | return $unregistrationAllowedVal; |
| 110 | } |
| 111 | |
| 112 | try { |
| 113 | $centralUser = $this->centralUserLookup->newFromAuthority( $performer ); |
| 114 | } catch ( UserNotGlobalException $_ ) { |
| 115 | return StatusValue::newFatal( 'campaignevents-unregister-need-central-account' ); |
| 116 | } |
| 117 | |
| 118 | $trackingToolValidationStatus = $this->trackingToolEventWatcher->validateParticipantsRemoved( |
| 119 | $registration, |
| 120 | [ $centralUser ], |
| 121 | false |
| 122 | ); |
| 123 | if ( !$trackingToolValidationStatus->isGood() ) { |
| 124 | return $trackingToolValidationStatus; |
| 125 | } |
| 126 | |
| 127 | $modified = $this->participantsStore->removeParticipantFromEvent( $registration->getID(), $centralUser ); |
| 128 | |
| 129 | if ( $modified ) { |
| 130 | $this->trackingToolEventWatcher->onParticipantsRemoved( |
| 131 | $registration, |
| 132 | [ $centralUser ], |
| 133 | false |
| 134 | ); |
| 135 | $this->eventPageCacheUpdater->purgeEventPageCache( $registration ); |
| 136 | } |
| 137 | |
| 138 | return StatusValue::newGood( $modified ); |
| 139 | } |
| 140 | |
| 141 | /** |
| 142 | * @param ExistingEventRegistration $registration |
| 143 | * @param CentralUser[]|null $users Array of users, if null remove all |
| 144 | * @param ICampaignsAuthority $performer |
| 145 | * @param bool $invertUsers self::DO_NOT_INVERT_USERS or self::INVERT_USERS |
| 146 | * @return StatusValue The StatusValue's "value" property is an array with two keys, `public` and `private`, that |
| 147 | * respectively contain the number of public and private participants removed. |
| 148 | */ |
| 149 | public function removeParticipantsIfAllowed( |
| 150 | ExistingEventRegistration $registration, |
| 151 | ?array $users, |
| 152 | ICampaignsAuthority $performer, |
| 153 | bool $invertUsers |
| 154 | ): StatusValue { |
| 155 | $permStatus = $this->authorizeRemoveParticipants( $registration, $performer ); |
| 156 | if ( !$permStatus->isGood() ) { |
| 157 | return $permStatus; |
| 158 | } |
| 159 | |
| 160 | return $this->removeParticipantsUnsafe( $registration, $users, $invertUsers ); |
| 161 | } |
| 162 | |
| 163 | /** |
| 164 | * @param ExistingEventRegistration $registration |
| 165 | * @param ICampaignsAuthority $performer |
| 166 | * @return PermissionStatus |
| 167 | */ |
| 168 | private function authorizeRemoveParticipants( |
| 169 | ExistingEventRegistration $registration, |
| 170 | ICampaignsAuthority $performer |
| 171 | ): PermissionStatus { |
| 172 | if ( !$this->permissionChecker->userCanRemoveParticipants( $performer, $registration ) ) { |
| 173 | return PermissionStatus::newFatal( 'campaignevents-unregister-participants-permission-denied' ); |
| 174 | } |
| 175 | return PermissionStatus::newGood(); |
| 176 | } |
| 177 | |
| 178 | /** |
| 179 | * @param ExistingEventRegistration $registration |
| 180 | * @param CentralUser[]|null $users Array of users, if null remove all |
| 181 | * @param bool $invertUsers self::DO_NOT_INVERT_USERS or self::INVERT_USERS |
| 182 | * @return StatusValue The StatusValue's "value" property is an array with two keys, `public` and `private`, that |
| 183 | * respectively contain the number of public and private participants removed. |
| 184 | */ |
| 185 | public function removeParticipantsUnsafe( |
| 186 | ExistingEventRegistration $registration, |
| 187 | ?array $users, |
| 188 | bool $invertUsers |
| 189 | ): StatusValue { |
| 190 | $unregistrationAllowedVal = self::checkIsUnregistrationAllowed( $registration, false ); |
| 191 | |
| 192 | if ( !$unregistrationAllowedVal->isGood() ) { |
| 193 | return $unregistrationAllowedVal; |
| 194 | } |
| 195 | |
| 196 | $trackingToolValidationStatus = $this->trackingToolEventWatcher->validateParticipantsRemoved( |
| 197 | $registration, |
| 198 | $users, |
| 199 | $invertUsers |
| 200 | ); |
| 201 | if ( !$trackingToolValidationStatus->isGood() ) { |
| 202 | return $trackingToolValidationStatus; |
| 203 | } |
| 204 | |
| 205 | $eventID = $registration->getID(); |
| 206 | $removedParticipants = $this->participantsStore->removeParticipantsFromEvent( |
| 207 | $eventID, |
| 208 | $users, |
| 209 | $invertUsers |
| 210 | ); |
| 211 | |
| 212 | if ( $removedParticipants['public'] + $removedParticipants['private'] > 0 ) { |
| 213 | $this->trackingToolEventWatcher->onParticipantsRemoved( |
| 214 | $registration, |
| 215 | $users, |
| 216 | $invertUsers |
| 217 | ); |
| 218 | $this->eventPageCacheUpdater->purgeEventPageCache( $registration ); |
| 219 | } |
| 220 | |
| 221 | return StatusValue::newGood( $removedParticipants ); |
| 222 | } |
| 223 | } |