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| 1 | <?php |
| 2 | /** |
| 3 | * Performs the watch actions on a page |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA |
| 18 | * |
| 19 | * @file |
| 20 | * @ingroup Actions |
| 21 | */ |
| 22 | |
| 23 | use MediaWiki\Context\IContextSource; |
| 24 | use MediaWiki\MainConfigNames; |
| 25 | use MediaWiki\Status\Status; |
| 26 | use MediaWiki\User\User; |
| 27 | use MediaWiki\Watchlist\WatchlistManager; |
| 28 | use Wikimedia\ParamValidator\TypeDef\ExpiryDef; |
| 29 | |
| 30 | /** |
| 31 | * Page addition to a user's watchlist |
| 32 | * |
| 33 | * @ingroup Actions |
| 34 | */ |
| 35 | class WatchAction extends FormAction { |
| 36 | |
| 37 | /** @var bool The value of the $wgWatchlistExpiry configuration variable. */ |
| 38 | protected $watchlistExpiry; |
| 39 | |
| 40 | /** @var string */ |
| 41 | protected $expiryFormFieldName = 'expiry'; |
| 42 | |
| 43 | /** @var false|WatchedItem */ |
| 44 | protected $watchedItem = false; |
| 45 | |
| 46 | private WatchlistManager $watchlistManager; |
| 47 | |
| 48 | /** |
| 49 | * Only public since 1.21 |
| 50 | * |
| 51 | * @param Article $article |
| 52 | * @param IContextSource $context |
| 53 | * @param WatchlistManager $watchlistManager |
| 54 | * @param WatchedItemStore $watchedItemStore |
| 55 | */ |
| 56 | public function __construct( |
| 57 | Article $article, |
| 58 | IContextSource $context, |
| 59 | WatchlistManager $watchlistManager, |
| 60 | WatchedItemStore $watchedItemStore |
| 61 | ) { |
| 62 | parent::__construct( $article, $context ); |
| 63 | $this->watchlistExpiry = $this->getContext()->getConfig()->get( MainConfigNames::WatchlistExpiry ); |
| 64 | if ( $this->watchlistExpiry ) { |
| 65 | // The watchedItem is only used in this action's form if $wgWatchlistExpiry is enabled. |
| 66 | $this->watchedItem = $watchedItemStore->getWatchedItem( |
| 67 | $this->getUser(), |
| 68 | $this->getTitle() |
| 69 | ); |
| 70 | } |
| 71 | $this->watchlistManager = $watchlistManager; |
| 72 | } |
| 73 | |
| 74 | public function getName() { |
| 75 | return 'watch'; |
| 76 | } |
| 77 | |
| 78 | public function requiresUnblock() { |
| 79 | return false; |
| 80 | } |
| 81 | |
| 82 | protected function getDescription() { |
| 83 | return ''; |
| 84 | } |
| 85 | |
| 86 | public function onSubmit( $data ) { |
| 87 | // Even though we're never unwatching here, use WatchlistManager::setWatch() |
| 88 | // because it also checks for changed expiry. |
| 89 | $result = $this->watchlistManager->setWatch( |
| 90 | true, |
| 91 | $this->getAuthority(), |
| 92 | $this->getTitle(), |
| 93 | $this->getRequest()->getVal( 'wp' . $this->expiryFormFieldName ) |
| 94 | ); |
| 95 | |
| 96 | return Status::wrap( $result ); |
| 97 | } |
| 98 | |
| 99 | /** |
| 100 | * @throws UserNotLoggedIn |
| 101 | * @throws PermissionsError |
| 102 | * @throws ReadOnlyError |
| 103 | * @throws UserBlockedError |
| 104 | */ |
| 105 | protected function checkCanExecute( User $user ) { |
| 106 | if ( !$user->isRegistered() |
| 107 | || ( $user->isTemp() && !$user->isAllowed( 'editmywatchlist' ) ) |
| 108 | ) { |
| 109 | throw new UserNotLoggedIn( 'watchlistanontext', 'watchnologin' ); |
| 110 | } |
| 111 | |
| 112 | parent::checkCanExecute( $user ); |
| 113 | } |
| 114 | |
| 115 | public function getRestriction() { |
| 116 | return 'editmywatchlist'; |
| 117 | } |
| 118 | |
| 119 | protected function usesOOUI() { |
| 120 | return true; |
| 121 | } |
| 122 | |
| 123 | protected function getFormFields() { |
| 124 | // If watchlist expiry is not enabled, return a simple confirmation message. |
| 125 | if ( !$this->watchlistExpiry ) { |
| 126 | return [ |
| 127 | 'intro' => [ |
| 128 | 'type' => 'info', |
| 129 | 'raw' => true, |
| 130 | 'default' => $this->msg( 'confirm-watch-top' )->parse(), |
| 131 | ], |
| 132 | ]; |
| 133 | } |
| 134 | |
| 135 | // Otherwise, use a select-list of expiries. |
| 136 | $expiryOptions = static::getExpiryOptions( $this->getContext(), $this->watchedItem ); |
| 137 | return [ |
| 138 | $this->expiryFormFieldName => [ |
| 139 | 'type' => 'select', |
| 140 | 'label-message' => 'confirm-watch-label', |
| 141 | 'options' => $expiryOptions['options'], |
| 142 | 'default' => $expiryOptions['default'], |
| 143 | ] |
| 144 | ]; |
| 145 | } |
| 146 | |
| 147 | /** |
| 148 | * Get options and default for a watchlist expiry select list. If an expiry time is provided, it |
| 149 | * will be added to the top of the list as 'x days left'. |
| 150 | * |
| 151 | * @since 1.35 |
| 152 | * @todo Move this somewhere better when it's being used in more than just this action. |
| 153 | * |
| 154 | * @param MessageLocalizer $msgLocalizer |
| 155 | * @param WatchedItem|false $watchedItem |
| 156 | * |
| 157 | * @return mixed[] With keys `options` (string[]) and `default` (string). |
| 158 | */ |
| 159 | public static function getExpiryOptions( MessageLocalizer $msgLocalizer, $watchedItem ) { |
| 160 | $expiryOptions = self::getExpiryOptionsFromMessage( $msgLocalizer ); |
| 161 | $default = in_array( 'infinite', $expiryOptions ) |
| 162 | ? 'infinite' |
| 163 | : current( $expiryOptions ); |
| 164 | if ( $watchedItem instanceof WatchedItem && $watchedItem->getExpiry() ) { |
| 165 | // If it's already being temporarily watched, |
| 166 | // add the existing expiry as the default option in the dropdown. |
| 167 | $default = $watchedItem->getExpiry( TS_ISO_8601 ); |
| 168 | $daysLeft = $watchedItem->getExpiryInDaysText( $msgLocalizer, true ); |
| 169 | $expiryOptions = array_merge( [ $daysLeft => $default ], $expiryOptions ); |
| 170 | } |
| 171 | return [ |
| 172 | 'options' => $expiryOptions, |
| 173 | 'default' => $default, |
| 174 | ]; |
| 175 | } |
| 176 | |
| 177 | /** |
| 178 | * Parse expiry options message. Fallback to english options |
| 179 | * if translated options are invalid or broken |
| 180 | * |
| 181 | * @param MessageLocalizer $msgLocalizer |
| 182 | * @param string|null $lang |
| 183 | * @return string[] |
| 184 | */ |
| 185 | private static function getExpiryOptionsFromMessage( |
| 186 | MessageLocalizer $msgLocalizer, ?string $lang = null |
| 187 | ): array { |
| 188 | $expiryOptionsMsg = $msgLocalizer->msg( 'watchlist-expiry-options' ); |
| 189 | $optionsText = !$lang ? $expiryOptionsMsg->text() : $expiryOptionsMsg->inLanguage( $lang )->text(); |
| 190 | $options = XmlSelect::parseOptionsMessage( |
| 191 | $optionsText |
| 192 | ); |
| 193 | |
| 194 | $expiryOptions = []; |
| 195 | foreach ( $options as $label => $value ) { |
| 196 | if ( strtotime( $value ) || wfIsInfinity( $value ) ) { |
| 197 | $expiryOptions[$label] = $value; |
| 198 | } |
| 199 | } |
| 200 | |
| 201 | // If message options is invalid try to recover by returning |
| 202 | // english options (T267611) |
| 203 | if ( !$expiryOptions && $expiryOptionsMsg->getLanguage()->getCode() !== 'en' ) { |
| 204 | return self::getExpiryOptionsFromMessage( $msgLocalizer, 'en' ); |
| 205 | } |
| 206 | |
| 207 | return $expiryOptions; |
| 208 | } |
| 209 | |
| 210 | protected function alterForm( HTMLForm $form ) { |
| 211 | $msg = $this->watchlistExpiry && $this->watchedItem ? 'updatewatchlist' : 'addwatch'; |
| 212 | $form->setWrapperLegendMsg( $msg ); |
| 213 | $submitMsg = $this->watchlistExpiry ? 'confirm-watch-button-expiry' : 'confirm-watch-button'; |
| 214 | $form->setSubmitTextMsg( $submitMsg ); |
| 215 | $form->setTokenSalt( 'watch' ); |
| 216 | } |
| 217 | |
| 218 | /** |
| 219 | * Show one of 8 possible success messages. |
| 220 | * The messages are: |
| 221 | * 1. addedwatchtext |
| 222 | * 2. addedwatchtext-talk |
| 223 | * 3. addedwatchindefinitelytext |
| 224 | * 4. addedwatchindefinitelytext-talk |
| 225 | * 5. addedwatchexpirytext |
| 226 | * 6. addedwatchexpirytext-talk |
| 227 | * 7. addedwatchexpiryhours |
| 228 | * 8. addedwatchexpiryhours-talk |
| 229 | */ |
| 230 | public function onSuccess() { |
| 231 | $msgKey = $this->getTitle()->isTalkPage() ? 'addedwatchtext-talk' : 'addedwatchtext'; |
| 232 | $expiryLabel = null; |
| 233 | $submittedExpiry = $this->getContext()->getRequest()->getText( 'wp' . $this->expiryFormFieldName ); |
| 234 | if ( $submittedExpiry ) { |
| 235 | // We can't use $this->watcheditem to get the expiry because it's not been saved at this |
| 236 | // point in the request and so its values are those from before saving. |
| 237 | $expiry = ExpiryDef::normalizeExpiry( $submittedExpiry, TS_ISO_8601 ); |
| 238 | |
| 239 | // If the expiry label isn't one of the predefined ones in the dropdown, calculate 'x days'. |
| 240 | $expiryDays = WatchedItem::calculateExpiryInDays( $expiry ); |
| 241 | $defaultLabels = static::getExpiryOptions( $this->getContext(), false )['options']; |
| 242 | $localizedExpiry = array_search( $submittedExpiry, $defaultLabels ); |
| 243 | $expiryLabel = $expiryDays && $localizedExpiry === false |
| 244 | ? $this->getContext()->msg( 'days', $expiryDays )->text() |
| 245 | : $localizedExpiry; |
| 246 | |
| 247 | // Determine which message to use, depending on whether this is a talk page or not |
| 248 | // and whether an expiry was selected. |
| 249 | $isTalk = $this->getTitle()->isTalkPage(); |
| 250 | if ( wfIsInfinity( $expiry ) ) { |
| 251 | $msgKey = $isTalk ? 'addedwatchindefinitelytext-talk' : 'addedwatchindefinitelytext'; |
| 252 | } elseif ( $expiryDays > 0 ) { |
| 253 | $msgKey = $isTalk ? 'addedwatchexpirytext-talk' : 'addedwatchexpirytext'; |
| 254 | } elseif ( $expiryDays < 1 ) { |
| 255 | $msgKey = $isTalk ? 'addedwatchexpiryhours-talk' : 'addedwatchexpiryhours'; |
| 256 | } |
| 257 | } |
| 258 | $this->getOutput()->addWikiMsg( $msgKey, $this->getTitle()->getPrefixedText(), $expiryLabel ); |
| 259 | } |
| 260 | |
| 261 | public function doesWrites() { |
| 262 | return true; |
| 263 | } |
| 264 | } |