ApiMove.php

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<?php
class ApiMove extends ApiBase {

        public function __construct( $main, $action ) {
                parent::__construct( $main, $action );
        }

        public function execute() {
                $user = $this->getUser();
                $params = $this->extractRequestParams();
                if ( is_null( $params['reason'] ) ) {
                        $params['reason'] = '';
                }

                $this->requireOnlyOneParameter( $params, 'from', 'fromid' );

                if ( isset( $params['from'] ) ) {
                        $fromTitle = Title::newFromText( $params['from'] );
                        if ( !$fromTitle ) {
                                $this->dieUsageMsg( array( 'invalidtitle', $params['from'] ) );
                        }
                } elseif ( isset( $params['fromid'] ) ) {
                        $fromTitle = Title::newFromID( $params['fromid'] );
                        if ( !$fromTitle ) {
                                $this->dieUsageMsg( array( 'nosuchpageid', $params['fromid'] ) );
                        }
                }

                if ( !$fromTitle->exists() ) {
                        $this->dieUsageMsg( 'notanarticle' );
                }
                $fromTalk = $fromTitle->getTalkPage();

                $toTitle = Title::newFromText( $params['to'] );
                if ( !$toTitle ) {
                        $this->dieUsageMsg( array( 'invalidtitle', $params['to'] ) );
                }
                $toTalk = $toTitle->getTalkPage();

                if ( $toTitle->getNamespace() == NS_FILE
                        && !RepoGroup::singleton()->getLocalRepo()->findFile( $toTitle )
                        && wfFindFile( $toTitle ) )
                {
                        if ( !$params['ignorewarnings'] && $user->isAllowed( 'reupload-shared' ) ) {
                                $this->dieUsageMsg( 'sharedfile-exists' );
                        } elseif ( !$user->isAllowed( 'reupload-shared' ) ) {
                                $this->dieUsageMsg( 'cantoverwrite-sharedfile' );
                        }
                }

                // Move the page
                $retval = $fromTitle->moveTo( $toTitle, true, $params['reason'], !$params['noredirect'] );
                if ( $retval !== true ) {
                        $this->dieUsageMsg( reset( $retval ) );
                }

                $r = array( 'from' => $fromTitle->getPrefixedText(), 'to' => $toTitle->getPrefixedText(), 'reason' => $params['reason'] );
                if ( !$params['noredirect'] || !$user->isAllowed( 'suppressredirect' ) ) {
                        $r['redirectcreated'] = '';
                }

                // Move the talk page
                if ( $params['movetalk'] && $fromTalk->exists() && !$fromTitle->isTalkPage() ) {
                        $retval = $fromTalk->moveTo( $toTalk, true, $params['reason'], !$params['noredirect'] );
                        if ( $retval === true ) {
                                $r['talkfrom'] = $fromTalk->getPrefixedText();
                                $r['talkto'] = $toTalk->getPrefixedText();
                        } else {
                                // We're not gonna dieUsage() on failure, since we already changed something
                                $parsed = $this->parseMsg( reset( $retval ) );
                                $r['talkmove-error-code'] = $parsed['code'];
                                $r['talkmove-error-info'] = $parsed['info'];
                        }
                }

                $result = $this->getResult();

                // Move subpages
                if ( $params['movesubpages'] ) {
                        $r['subpages'] = $this->moveSubpages( $fromTitle, $toTitle,
                                        $params['reason'], $params['noredirect'] );
                        $result->setIndexedTagName( $r['subpages'], 'subpage' );

                        if ( $params['movetalk'] ) {
                                $r['subpages-talk'] = $this->moveSubpages( $fromTalk, $toTalk,
                                        $params['reason'], $params['noredirect'] );
                                $result->setIndexedTagName( $r['subpages-talk'], 'subpage' );
                        }
                }

                $watch = "preferences";
                if ( isset( $params['watchlist'] ) ) {
                        $watch = $params['watchlist'];
                } elseif ( $params['watch'] ) {
                        $watch = 'watch';
                } elseif ( $params['unwatch'] ) {
                        $watch = 'unwatch';
                }

                // Watch pages
                $this->setWatch( $watch, $fromTitle, 'watchmoves' );
                $this->setWatch( $watch, $toTitle, 'watchmoves' );

                $result->addValue( null, $this->getModuleName(), $r );
        }

        public function moveSubpages( $fromTitle, $toTitle, $reason, $noredirect ) {
                $retval = array();
                $success = $fromTitle->moveSubpages( $toTitle, true, $reason, !$noredirect );
                if ( isset( $success[0] ) ) {
                        return array( 'error' => $this->parseMsg( $success ) );
                } else {
                        // At least some pages could be moved
                        // Report each of them separately
                        foreach ( $success as $oldTitle => $newTitle ) {
                                $r = array( 'from' => $oldTitle );
                                if ( is_array( $newTitle ) ) {
                                        $r['error'] = $this->parseMsg( reset( $newTitle ) );
                                } else {
                                        // Success
                                        $r['to'] = $newTitle;
                                }
                                $retval[] = $r;
                        }
                }
                return $retval;
        }

        public function mustBePosted() {
                return true;
        }

        public function isWriteMode() {
                return true;
        }

        public function getAllowedParams() {
                return array(
                        'from' => null,
                        'fromid' => array(
                                ApiBase::PARAM_TYPE => 'integer'
                        ),
                        'to' => array(
                                ApiBase::PARAM_TYPE => 'string',
                                ApiBase::PARAM_REQUIRED => true
                        ),
                        'token' => null,
                        'reason' => null,
                        'movetalk' => false,
                        'movesubpages' => false,
                        'noredirect' => false,
                        'watch' => array(
                                ApiBase::PARAM_DFLT => false,
                                ApiBase::PARAM_DEPRECATED => true,
                        ),
                        'unwatch' => array(
                                ApiBase::PARAM_DFLT => false,
                                ApiBase::PARAM_DEPRECATED => true,
                        ),
                        'watchlist' => array(
                                ApiBase::PARAM_DFLT => 'preferences',
                                ApiBase::PARAM_TYPE => array(
                                        'watch',
                                        'unwatch',
                                        'preferences',
                                        'nochange'
                                ),
                        ),
                        'ignorewarnings' => false
                );
        }

        public function getParamDescription() {
                $p = $this->getModulePrefix();
                return array(
                        'from' => "Title of the page you want to move. Cannot be used together with {$p}fromid",
                        'fromid' => "Page ID of the page you want to move. Cannot be used together with {$p}from",
                        'to' => 'Title you want to rename the page to',
                        'token' => 'A move token previously retrieved through prop=info',
                        'reason' => 'Reason for the move (optional)',
                        'movetalk' => 'Move the talk page, if it exists',
                        'movesubpages' => 'Move subpages, if applicable',
                        'noredirect' => 'Don\'t create a redirect',
                        'watch' => 'Add the page and the redirect to your watchlist',
                        'unwatch' => 'Remove the page and the redirect from your watchlist',
                        'watchlist' => 'Unconditionally add or remove the page from your watchlist, use preferences or do not change watch',
                        'ignorewarnings' => 'Ignore any warnings'
                );
        }

        public function getDescription() {
                return 'Move a page';
        }

        public function getPossibleErrors() {
                return array_merge( parent::getPossibleErrors(),
                        $this->getRequireOnlyOneParameterErrorMessages( array( 'from', 'fromid' ) ),
                        array(
                                array( 'invalidtitle', 'from' ),
                                array( 'nosuchpageid', 'fromid' ),
                                array( 'notanarticle' ),
                                array( 'invalidtitle', 'to' ),
                                array( 'sharedfile-exists' ),
                        )
                );
        }

        public function needsToken() {
                return true;
        }

        public function getTokenSalt() {
                return '';
        }

        public function getExamples() {
                return array(
                        'api.php?action=move&from=Exampel&to=Example&token=123ABC&reason=Misspelled%20title&movetalk=&noredirect='
                );
        }

        public function getHelpUrls() {
                return 'https://www.mediawiki.org/wiki/API:Move';
        }

        public function getVersion() {
                return __CLASS__ . ': $Id$';
        }
}