includes/api/ApiWatch.php

   1 <?php
   2 /**
   3  *
   4  *
   5  * Created on Jan 4, 2008
   6  *
   7  * Copyright © 2008 Yuri Astrakhan "<Firstname><Lastname>@gmail.com",
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, write to the Free Software Foundation, Inc.,
  21  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  22  * http://www.gnu.org/copyleft/gpl.html
  23  *
  24  * @file
  25  */
  26
  27 /**
  28  * API module to allow users to watch a page
  29  *
  30  * @ingroup API
  31  */
  32 class ApiWatch extends ApiBase {
  33
  34         public function execute() {
  35                 $user = $this->getUser();
  36                 if ( !$user->isLoggedIn() ) {
  37                         $this->dieUsage( 'You must be logged-in to have a watchlist', 'notloggedin' );
  38                 }
  39                 if ( !$user->isAllowed( 'editmywatchlist' ) ) {
  40                         $this->dieUsage( 'You don\'t have permission to edit your watchlist', 'permissiondenied' );
  41                 }
  42
  43                 $params = $this->extractRequestParams();
  44                 $title = Title::newFromText( $params['title'] );
  45
  46                 if ( !$title || $title->isExternal() || !$title->canExist() ) {
  47                         $this->dieUsageMsg( array( 'invalidtitle', $params['title'] ) );
  48                 }
  49
  50                 $res = array( 'title' => $title->getPrefixedText() );
  51
  52                 // Currently unnecessary, code to act as a safeguard against any change
  53                 // in current behavior of uselang.
  54                 // Copy from ApiParse
  55                 $oldLang = null;
  56                 if ( isset( $params['uselang'] ) &&
  57                         $params['uselang'] != $this->getContext()->getLanguage()->getCode()
  58                 ) {
  59                         $oldLang = $this->getContext()->getLanguage(); // Backup language
  60                         $this->getContext()->setLanguage( Language::factory( $params['uselang'] ) );
  61                 }
  62
  63                 if ( $params['unwatch'] ) {
  64                         $res['unwatched'] = '';
  65                         $res['message'] = $this->msg( 'removedwatchtext', $title->getPrefixedText() )
  66                                 ->title( $title )->parseAsBlock();
  67                         $status = UnwatchAction::doUnwatch( $title, $user );
  68                 } else {
  69                         $res['watched'] = '';
  70                         $res['message'] = $this->msg( 'addedwatchtext', $title->getPrefixedText() )
  71                                 ->title( $title )->parseAsBlock();
  72                         $status = WatchAction::doWatch( $title, $user );
  73                 }
  74
  75                 if ( !is_null( $oldLang ) ) {
  76                         $this->getContext()->setLanguage( $oldLang ); // Reset language to $oldLang
  77                 }
  78
  79                 if ( !$status->isOK() ) {
  80                         $this->dieStatus( $status );
  81                 }
  82                 $this->getResult()->addValue( null, $this->getModuleName(), $res );
  83         }
  84
  85         public function mustBePosted() {
  86                 return true;
  87         }
  88
  89         public function isWriteMode() {
  90                 return true;
  91         }
  92
  93         public function needsToken() {
  94                 return true;
  95         }
  96
  97         public function getTokenSalt() {
  98                 return 'watch';
  99         }
 100
 101         public function getAllowedParams() {
 102                 return array(
 103                         'title' => array(
 104                                 ApiBase::PARAM_TYPE => 'string',
 105                                 ApiBase::PARAM_REQUIRED => true
 106                         ),
 107                         'unwatch' => false,
 108                         'uselang' => null,
 109                         'token' => array(
 110                                 ApiBase::PARAM_TYPE => 'string',
 111                                 ApiBase::PARAM_REQUIRED => true
 112                         ),
 113                 );
 114         }
 115
 116         public function getParamDescription() {
 117                 return array(
 118                         'title' => 'The page to (un)watch',
 119                         'unwatch' => 'If set the page will be unwatched rather than watched',
 120                         'uselang' => 'Language to show the message in',
 121                         'token' => 'A token previously acquired via prop=info',
 122                 );
 123         }
 124
 125         public function getResultProperties() {
 126                 return array(
 127                         '' => array(
 128                                 'title' => 'string',
 129                                 'unwatched' => 'boolean',
 130                                 'watched' => 'boolean',
 131                                 'message' => 'string'
 132                         )
 133                 );
 134         }
 135
 136         public function getDescription() {
 137                 return 'Add or remove a page from/to the current user\'s watchlist';
 138         }
 139
 140         public function getPossibleErrors() {
 141                 return array_merge( parent::getPossibleErrors(), array(
 142                         array( 'code' => 'notloggedin', 'info' => 'You must be logged-in to have a watchlist' ),
 143                         array( 'invalidtitle', 'title' ),
 144                         array( 'hookaborted' ),
 145                 ) );
 146         }
 147
 148         public function getExamples() {
 149                 return array(
 150                         'api.php?action=watch&title=Main_Page' => 'Watch the page "Main Page"',
 151                         'api.php?action=watch&title=Main_Page&unwatch=' => 'Unwatch the page "Main Page"',
 152                 );
 153         }
 154
 155         public function getHelpUrls() {
 156                 return 'https://www.mediawiki.org/wiki/API:Watch';
 157         }
 158 }