SpecialMovePage.php

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<?php
namespace MediaWiki\Specials;
 
use MediaWiki\Actions\WatchAction;
use MediaWiki\CommentStore\CommentStore;
use MediaWiki\Content\IContentHandlerFactory;
use MediaWiki\Exception\ErrorPageError;
use MediaWiki\Exception\PermissionsError;
use MediaWiki\Exception\ThrottledError;
use MediaWiki\FileRepo\RepoGroup;
use MediaWiki\Html\Html;
use MediaWiki\JobQueue\Jobs\DoubleRedirectJob;
use MediaWiki\Linker\Linker;
use MediaWiki\Logging\LogEventsList;
use MediaWiki\Logging\LogPage;
use MediaWiki\MainConfigNames;
use MediaWiki\Page\DeletePageFactory;
use MediaWiki\Page\LinkBatchFactory;
use MediaWiki\Page\MovePageFactory;
use MediaWiki\Page\WikiPageFactory;
use MediaWiki\Permissions\PermissionManager;
use MediaWiki\Permissions\PermissionStatus;
use MediaWiki\Permissions\RestrictionStore;
use MediaWiki\Search\SearchEngineFactory;
use MediaWiki\SpecialPage\UnlistedSpecialPage;
use MediaWiki\Status\Status;
use MediaWiki\Title\NamespaceInfo;
use MediaWiki\Title\Title;
use MediaWiki\Title\TitleArrayFromResult;
use MediaWiki\Title\TitleFactory;
use MediaWiki\User\Options\UserOptionsLookup;
use MediaWiki\User\User;
use MediaWiki\Watchlist\WatchedItemStore;
use MediaWiki\Watchlist\WatchlistManager;
use MediaWiki\Widget\ComplexTitleInputWidget;
use OOUI\ButtonInputWidget;
use OOUI\CheckboxInputWidget;
use OOUI\DropdownInputWidget;
use OOUI\FieldLayout;
use OOUI\FieldsetLayout;
use OOUI\FormLayout;
use OOUI\HtmlSnippet;
use OOUI\PanelLayout;
use OOUI\TextInputWidget;
use StatusValue;
use Wikimedia\ParamValidator\TypeDef\ExpiryDef;
use Wikimedia\Rdbms\IConnectionProvider;
use Wikimedia\Rdbms\IDBAccessObject;
use Wikimedia\Timestamp\TimestampFormat as TS;
 
class SpecialMovePage extends UnlistedSpecialPage {
    protected $oldTitle = null;
 
    protected $newTitle;
 
    protected $reason;
 
    protected $moveTalk;
 
    protected $deleteAndMove;
 
    protected $moveSubpages;
 
    protected $fixRedirects;
 
    protected $leaveRedirect;
 
    protected $moveOverShared;
 
    private bool $moveOverProtection;
 
    private $watch = false;
 
    public function __construct(
        private readonly MovePageFactory $movePageFactory,
        private readonly PermissionManager $permManager,
        private readonly UserOptionsLookup $userOptionsLookup,
        private readonly IConnectionProvider $dbProvider,
        private readonly IContentHandlerFactory $contentHandlerFactory,
        private readonly NamespaceInfo $nsInfo,
        private readonly LinkBatchFactory $linkBatchFactory,
        private readonly RepoGroup $repoGroup,
        private readonly WikiPageFactory $wikiPageFactory,
        private readonly SearchEngineFactory $searchEngineFactory,
        private readonly WatchlistManager $watchlistManager,
        private readonly WatchedItemStore $watchedItemStore,
        private readonly RestrictionStore $restrictionStore,
        private readonly TitleFactory $titleFactory,
        private readonly DeletePageFactory $deletePageFactory,
    ) {
        parent::__construct( 'Movepage' );
    }
 
    public function doesWrites() {
        return true;
    }
 
    public function execute( $par ) {
        $this->useTransactionalTimeLimit();
        $this->checkReadOnly();
        $this->setHeaders();
        $this->outputHeader();
 
        $request = $this->getRequest();
 
        // Beware: The use of WebRequest::getText() is wanted! See T22365
        $target = $par ?? $request->getText( 'target' );
        $oldTitleText = $request->getText( 'wpOldTitle', $target );
        $this->oldTitle = Title::newFromText( $oldTitleText );
 
        if ( !$this->oldTitle ) {
            // Either oldTitle wasn't passed, or newFromText returned null
            throw new ErrorPageError( 'notargettitle', 'notargettext' );
        }
        $this->getOutput()->addBacklinkSubtitle( $this->oldTitle );
        // Various uses of Html::errorBox and Html::warningBox.
        $this->getOutput()->addModuleStyles( 'mediawiki.codex.messagebox.styles' );
 
        if ( !$this->oldTitle->exists() ) {
            throw new ErrorPageError( 'nopagetitle', 'nopagetext' );
        }
 
        $newTitleTextMain = $request->getText( 'wpNewTitleMain' );
        $newTitleTextNs = $request->getInt( 'wpNewTitleNs', $this->oldTitle->getNamespace() );
        // Backwards compatibility for forms submitting here from other sources
        // which is more common than it should be.
        $newTitleText_bc = $request->getText( 'wpNewTitle' );
        $this->newTitle = strlen( $newTitleText_bc ) > 0
            ? Title::newFromText( $newTitleText_bc )
            : Title::makeTitleSafe( $newTitleTextNs, $newTitleTextMain );
 
        $user = $this->getUser();
        $isSubmit = $request->getRawVal( 'action' ) === 'submit' && $request->wasPosted();
 
        $reasonList = $request->getText( 'wpReasonList', 'other' );
        $reason = $request->getText( 'wpReason' );
        if ( $reasonList === 'other' ) {
            $this->reason = $reason;
        } elseif ( $reason !== '' ) {
            $this->reason = $reasonList . $this->msg( 'colon-separator' )->inContentLanguage()->text() . $reason;
        } else {
            $this->reason = $reasonList;
        }
        // Default to checked, but don't fill in true during submission (browsers only submit checked values)
        // TODO: Use HTMLForm to take care of this.
        $def = !$isSubmit;
        $this->moveTalk = $request->getBool( 'wpMovetalk', $def );
        $this->fixRedirects = $request->getBool( 'wpFixRedirects', $def );
        $this->leaveRedirect = $request->getBool( 'wpLeaveRedirect', $def );
        // T222953: Tick the "move subpages" box by default
        $this->moveSubpages = $request->getBool( 'wpMovesubpages', $def );
        $this->deleteAndMove = $request->getBool( 'wpDeleteAndMove' );
        $this->moveOverShared = $request->getBool( 'wpMoveOverSharedFile' );
        $this->moveOverProtection = $request->getBool( 'wpMoveOverProtection' );
        $this->watch = $request->getCheck( 'wpWatch' ) && $user->isRegistered();
 
        // Similar to other SpecialPage/Action classes, when tokens fail (likely due to reset or expiry),
        // do not show an error but show the form again for easy re-submit.
        if ( $isSubmit && $user->matchEditToken( $request->getVal( 'wpEditToken' ) ) ) {
            // Check rights
            $permStatus = $this->permManager->getPermissionStatus( 'move', $user, $this->oldTitle,
                PermissionManager::RIGOR_SECURE );
            // If the account is "hard" blocked, auto-block IP
            $user->scheduleSpreadBlock();
            if ( !$permStatus->isGood() ) {
                throw new PermissionsError( 'move', $permStatus );
            }
            $this->doSubmit();
        } else {
            // Avoid primary DB connection on form view (T283265)
            $permStatus = $this->permManager->getPermissionStatus( 'move', $user, $this->oldTitle,
                PermissionManager::RIGOR_FULL );
            if ( !$permStatus->isGood() ) {
                $user->scheduleSpreadBlock();
                throw new PermissionsError( 'move', $permStatus );
            }
            $this->showForm();
        }
    }
 
    private function showForm( ?StatusValue $status = null, ?StatusValue $talkStatus = null ) {
        $this->getSkin()->setRelevantTitle( $this->oldTitle );
 
        $out = $this->getOutput();
        $out->setPageTitleMsg( $this->msg( 'move-page' )->plaintextParams( $this->oldTitle->getPrefixedText() ) );
        $out->addModuleStyles( [
            'mediawiki.special',
            'mediawiki.interface.helpers.styles'
        ] );
        $out->addModules( 'mediawiki.misc-authed-ooui' );
        $this->addHelpLink( 'Help:Moving a page' );
 
        $handler = $this->contentHandlerFactory
            ->getContentHandler( $this->oldTitle->getContentModel() );
        $createRedirect = $handler->supportsRedirects() && !(
            // Do not create redirects for wikitext message overrides (T376399).
            // Maybe one day they will have a custom content model and this special case won't be needed.
            $this->oldTitle->getNamespace() === NS_MEDIAWIKI &&
            $this->oldTitle->getContentModel() === CONTENT_MODEL_WIKITEXT
        );
 
        if ( $this->getConfig()->get( MainConfigNames::FixDoubleRedirects ) ) {
            $out->addWikiMsg( 'movepagetext' );
        } else {
            $out->addWikiMsg( $createRedirect ?
                'movepagetext-noredirectfixer' :
                'movepagetext-noredirectsupport' );
        }
 
        if ( $this->oldTitle->getNamespace() === NS_USER && !$this->oldTitle->isSubpage() ) {
            $out->addHTML(
                Html::warningBox(
                    $out->msg( 'moveuserpage-warning' )->parse(),
                    'mw-moveuserpage-warning'
                )
            );
            // Deselect moveTalk unless it's explicitly given
            $this->moveTalk = $this->getRequest()->getBool( "wpMovetalk", false );
        } elseif ( $this->oldTitle->getNamespace() === NS_CATEGORY ) {
            $out->addHTML(
                Html::warningBox(
                    $out->msg( 'movecategorypage-warning' )->parse(),
                    'mw-movecategorypage-warning'
                )
            );
        }
 
        $deleteAndMove = [];
        $moveOverShared = false;
 
        $user = $this->getUser();
        $newTitle = $this->newTitle;
        $oldTalk = $this->oldTitle->getTalkPageIfDefined();
 
        if ( !$newTitle ) {
            # Show the current title as a default
            # when the form is first opened.
            $newTitle = $this->oldTitle;
        } elseif ( !$status ) {
            # If a title was supplied, probably from the move log revert
            # link, check for validity. We can then show some diagnostic
            # information and save a click.
            $mp = $this->movePageFactory->newMovePage( $this->oldTitle, $newTitle );
            $status = $mp->isValidMove();
            $status->merge( $mp->probablyCanMove( $this->getAuthority() ) );
            if ( $this->moveTalk ) {
                $newTalk = $newTitle->getTalkPageIfDefined();
                if ( $oldTalk && $newTalk && $oldTalk->exists() ) {
                    $mpTalk = $this->movePageFactory->newMovePage( $oldTalk, $newTalk );
                    $talkStatus = $mpTalk->isValidMove();
                    $talkStatus->merge( $mpTalk->probablyCanMove( $this->getAuthority() ) );
                }
            }
        }
        if ( !$status ) {
            // Caller (execute) is responsible for checking that you have permission to move the page somewhere
            $status = StatusValue::newGood();
        }
        if ( !$talkStatus ) {
            if ( $oldTalk ) {
                // If you don't have permission to move the talk page anywhere then complain about that now
                // rather than only after submitting the form to move the page
                $talkStatus = $this->permManager->getPermissionStatus( 'move', $user, $oldTalk,
                    PermissionManager::RIGOR_QUICK );
            } else {
                // If there's no talk page to move (for example the old page is in a namespace with no talk page)
                // then this needs to be set to something ...
                $talkStatus = StatusValue::newGood();
            }
        }
 
        $oldTalk = $this->oldTitle->getTalkPageIfDefined();
        $oldTitleSubpages = $this->oldTitle->hasSubpages();
        $oldTitleTalkSubpages = $this->oldTitle->getTalkPageIfDefined()->hasSubpages();
 
        $canMoveSubpage = ( $oldTitleSubpages || $oldTitleTalkSubpages ) &&
            $this->permManager->quickUserCan(
                'move-subpages',
                $user,
                $this->oldTitle
            );
        # We also want to be able to move assoc. subpage talk-pages even if base page
        # has no associated talk page, so || with $oldTitleTalkSubpages.
        $considerTalk = !$this->oldTitle->isTalkPage() &&
            ( $oldTalk->exists()
                || ( $oldTitleTalkSubpages && $canMoveSubpage ) );
 
        if ( $this->getConfig()->get( MainConfigNames::FixDoubleRedirects ) ) {
            $queryBuilder = $this->dbProvider->getReplicaDatabase()->newSelectQueryBuilder()
                ->select( '1' )
                ->from( 'redirect' )
                ->where( [ 'rd_namespace' => $this->oldTitle->getNamespace() ] )
                ->andWhere( [ 'rd_title' => $this->oldTitle->getDBkey() ] )
                ->andWhere( [ 'rd_interwiki' => '' ] );
 
            $hasRedirects = (bool)$queryBuilder->caller( __METHOD__ )->fetchField();
        } else {
            $hasRedirects = false;
        }
 
        $newTalkTitle = $newTitle->getTalkPageIfDefined();
        $talkOK = $talkStatus->isOK();
        $mainOK = $status->isOK();
        $talkIsArticle = $talkIsRedirect = $mainIsArticle = $mainIsRedirect = false;
        if ( count( $status->getMessages() ) == 1 ) {
            $mainIsArticle = $status->hasMessage( 'articleexists' )
                && $this->permManager->quickUserCan( 'delete', $user, $newTitle );
            $mainIsRedirect = $status->hasMessage( 'redirectexists' ) && (
                // Any user that can delete normally can also delete a redirect here
                $this->permManager->quickUserCan( 'delete-redirect', $user, $newTitle ) ||
                $this->permManager->quickUserCan( 'delete', $user, $newTitle ) );
            if ( $status->hasMessage( 'file-exists-sharedrepo' )
                && $this->permManager->userHasRight( $user, 'reupload-shared' )
            ) {
                $out->addHTML(
                    Html::warningBox(
                        $out->msg( 'move-over-sharedrepo', $newTitle->getPrefixedText() )->parse()
                    )
                );
                $moveOverShared = true;
                $status = StatusValue::newGood();
            }
        }
        if ( count( $talkStatus->getMessages() ) == 1 ) {
            $talkIsArticle = $talkStatus->hasMessage( 'articleexists' )
                && $this->permManager->quickUserCan( 'delete', $user, $newTitle );
            $talkIsRedirect = $talkStatus->hasMessage( 'redirectexists' ) && (
                // Any user that can delete normally can also delete a redirect here
                $this->permManager->quickUserCan( 'delete-redirect', $user, $newTitle ) ||
                $this->permManager->quickUserCan( 'delete', $user, $newTitle ) );
            // Talk page is by definition not a file so can't be shared
        }
        $warning = null;
        // Case 1: Two pages need deletions of full history
        // Either both are articles or one is an article and one is a redirect
        if ( ( $talkIsArticle && $mainIsArticle ) ||
             ( $talkIsArticle && $mainIsRedirect ) ||
             ( $talkIsRedirect && $mainIsArticle )
        ) {
            $warning = $out->msg( 'delete_and_move_text_2',
                $newTitle->getPrefixedText(),
                $newTalkTitle->getPrefixedText()
            );
            $deleteAndMove = [ $newTitle, $newTalkTitle ];
        // Case 2: Both need simple deletes
        } elseif ( $mainIsRedirect && $talkIsRedirect ) {
            $warning = $out->msg( 'delete_redirect_and_move_text_2',
                $newTitle->getPrefixedText(),
                $newTalkTitle->getPrefixedText()
            );
            $deleteAndMove = [ $newTitle, $newTalkTitle ];
        // Case 3: The main page needs a full delete, the talk doesn't exist
        // (or is a single-rev redirect to the source we can silently ignore)
        } elseif ( $mainIsArticle && $talkOK ) {
            $warning = $out->msg( 'delete_and_move_text', $newTitle->getPrefixedText() );
            $deleteAndMove = [ $newTitle ];
        // Case 4: The main page needs a simple delete, the talk doesn't exist
        } elseif ( $mainIsRedirect && $talkOK ) {
            $warning = $out->msg( 'delete_redirect_and_move_text', $newTitle->getPrefixedText() );
            $deleteAndMove = [ $newTitle ];
        // Cases 5 and 6: The same for the talk page
        } elseif ( $talkIsArticle && $mainOK ) {
            $warning = $out->msg( 'delete_and_move_text', $newTalkTitle->getPrefixedText() );
            $deleteAndMove = [ $newTalkTitle ];
        } elseif ( $talkIsRedirect && $mainOK ) {
            $warning = $out->msg( 'delete_redirect_and_move_text', $newTalkTitle->getPrefixedText() );
            $deleteAndMove = [ $newTalkTitle ];
        }
        if ( $warning ) {
            $out->addHTML( Html::warningBox( $warning->parse() ) );
        } else {
            $messages = $status->getMessages();
            if ( $messages ) {
                if ( $status instanceof PermissionStatus ) {
                    $action_desc = $this->msg( 'action-move' )->plain();
                    $errMsgHtml = $this->msg( 'permissionserrorstext-withaction',
                        count( $messages ), $action_desc )->parseAsBlock();
                } else {
                    $errMsgHtml = $this->msg( 'cannotmove', count( $messages ) )->parseAsBlock();
                }
 
                if ( count( $messages ) == 1 ) {
                    $errMsgHtml .= $this->msg( $messages[0] )->parseAsBlock();
                } else {
                    $errStr = [];
 
                    foreach ( $messages as $msg ) {
                        $errStr[] = $this->msg( $msg )->parse();
                    }
 
                    // Duplicate errors can easily arise since MovePage checks for both "edit" and "move" against
                    // the target page, and lots of things that block one also block the other
                    $errStr = array_unique( $errStr );
 
                    $errMsgHtml .= '<ul><li>' . implode( "</li>\n<li>", $errStr ) . "</li></ul>\n";
                }
                $out->addHTML( Html::errorBox( $errMsgHtml ) );
            }
            $talkMessages = $talkStatus->getMessages();
            if ( $talkMessages ) {
                // Can't use permissionerrorstext here since there's no specific action for moving the talk page
                $errMsgHtml = $this->msg( 'cannotmovetalk', count( $talkMessages ) )->parseAsBlock();
 
                if ( count( $talkMessages ) == 1 ) {
                    $errMsgHtml .= $this->msg( $talkMessages[0] )->parseAsBlock();
                } else {
                    $errStr = [];
 
                    foreach ( $talkMessages as $msg ) {
                        $errStr[] = $this->msg( $msg )->parse();
                    }
 
                    $errMsgHtml .= '<ul><li>' . implode( "</li>\n<li>", $errStr ) . "</li></ul>\n";
                }
                $errMsgHtml .= $this->msg( 'movetalk-unselect' )->parse();
                $out->addHTML( Html::errorBox( $errMsgHtml ) );
            }
        }
 
        if ( $this->restrictionStore->isProtected( $this->oldTitle, 'move' ) ) {
            # Is the title semi-protected?
            if ( $this->restrictionStore->isSemiProtected( $this->oldTitle, 'move' ) ) {
                $noticeMsg = 'semiprotectedpagemovewarning';
            } else {
                # Then it must be protected based on static groups (regular)
                $noticeMsg = 'protectedpagemovewarning';
            }
            LogEventsList::showLogExtract(
                $out,
                'protect',
                $this->oldTitle,
                '',
                [ 'lim' => 1, 'msgKey' => $noticeMsg ]
            );
        }
        // Intentionally don't check moveTalk here since this is in the form before you specify whether
        // to move the talk page
        if ( $talkOK && $oldTalk && $oldTalk->exists() && $this->restrictionStore->isProtected( $oldTalk, 'move' ) ) {
            # Is the title semi-protected?
            if ( $this->restrictionStore->isSemiProtected( $oldTalk, 'move' ) ) {
                $noticeMsg = 'semiprotectedtalkpagemovewarning';
            } else {
                # Then it must be protected based on static groups (regular)
                $noticeMsg = 'protectedtalkpagemovewarning';
            }
            LogEventsList::showLogExtract(
                $out,
                'protect',
                $oldTalk,
                '',
                [ 'lim' => 1, 'msgKey' => $noticeMsg ]
            );
        }
 
        // Length limit for wpReason and wpNewTitleMain is enforced in the
        // mediawiki.special.movePage module
 
        $immovableNamespaces = [];
        foreach ( $this->getLanguage()->getNamespaces() as $nsId => $_ ) {
            if ( !$this->nsInfo->isMovable( $nsId ) ) {
                $immovableNamespaces[] = $nsId;
            }
        }
 
        $moveOverProtection = false;
        if ( $this->newTitle && $mainOK ) {
            // If you can't move the page anyway then don't bother displaying warnings
            // about it being protected
            if ( $this->restrictionStore->isProtected( $this->newTitle, 'create' ) ) {
                # Is the title semi-protected?
                if ( $this->restrictionStore->isSemiProtected( $this->newTitle, 'create' ) ) {
                    $noticeMsg = 'semiprotectedpagemovecreatewarning';
                } else {
                    # Then it must be protected based on static groups (regular)
                    $noticeMsg = 'protectedpagemovecreatewarning';
                }
                LogEventsList::showLogExtract(
                    $out,
                    'protect',
                    $this->newTitle,
                    '',
                    [ 'lim' => 1, 'msgKey' => $noticeMsg ]
                );
                $moveOverProtection = true;
            }
            $newTalk = $newTitle->getTalkPageIfDefined();
            if ( $oldTalk && $oldTalk->exists() && $talkOK &&
                $newTalk && $this->restrictionStore->isProtected( $newTalk, 'create' )
            ) {
                # Is the title semi-protected?
                if ( $this->restrictionStore->isSemiProtected( $newTalk, 'create' ) ) {
                    $noticeMsg = 'semiprotectedpagemovetalkcreatewarning';
                } else {
                    # Then it must be protected based on static groups (regular)
                    $noticeMsg = 'protectedpagemovetalkcreatewarning';
                }
                LogEventsList::showLogExtract(
                    $out,
                    'protect',
                    $newTalk,
                    '',
                    [ 'lim' => 1, 'msgKey' => $noticeMsg ]
                );
                $moveOverProtection = true;
            }
        }
 
        $out->enableOOUI();
        $fields = [];
 
        $fields[] = new FieldLayout(
            new ComplexTitleInputWidget( [
                'id' => 'wpNewTitle',
                'namespace' => [
                    'id' => 'wpNewTitleNs',
                    'name' => 'wpNewTitleNs',
                    'value' => $newTitle->getNamespace(),
                    'exclude' => $immovableNamespaces,
                ],
                'title' => [
                    'id' => 'wpNewTitleMain',
                    'name' => 'wpNewTitleMain',
                    'value' => $newTitle->getText(),
                    // Inappropriate, since we're expecting the user to input a non-existent page's title
                    'suggestions' => false,
                ],
                'infusable' => true,
            ] ),
            [
                'label' => $this->msg( 'newtitle' )->text(),
                'align' => 'top',
            ]
        );
 
        $options = Html::listDropdownOptions(
            $this->msg( 'movepage-reason-dropdown' )
                ->page( $this->oldTitle )
                ->inContentLanguage()
                ->text(),
            [ 'other' => $this->msg( 'movereasonotherlist' )->text() ]
        );
        $options = Html::listDropdownOptionsOoui( $options );
 
        $fields[] = new FieldLayout(
            new DropdownInputWidget( [
                'name' => 'wpReasonList',
                'inputId' => 'wpReasonList',
                'infusable' => true,
                'value' => $this->getRequest()->getText( 'wpReasonList', 'other' ),
                'options' => $options,
            ] ),
            [
                'label' => $this->msg( 'movereason' )->text(),
                'align' => 'top',
            ]
        );
 
        // HTML maxlength uses "UTF-16 code units", which means that characters outside BMP
        // (e.g. emojis) count for two each. This limit is overridden in JS to instead count
        // Unicode codepoints.
        $fields[] = new FieldLayout(
            new TextInputWidget( [
                'name' => 'wpReason',
                'id' => 'wpReason',
                'maxLength' => CommentStore::COMMENT_CHARACTER_LIMIT,
                'infusable' => true,
                'value' => $this->getRequest()->getText( 'wpReason' ),
            ] ),
            [
                'label' => $this->msg( 'moveotherreason' )->text(),
                'align' => 'top',
            ]
        );
 
        if ( $considerTalk ) {
            $fields[] = new FieldLayout(
                new CheckboxInputWidget( [
                    'name' => 'wpMovetalk',
                    'id' => 'wpMovetalk',
                    'value' => '1',
                    // It's intentional that this box is still visible and checked by default even if you don't have
                    // permission to move the talk page; wanting to separate a base page from its talk page is so
                    // unusual that you should have to explicitly uncheck the box to do so
                    'selected' => $this->moveTalk,
                ] ),
                [
                    'label' => $this->msg( 'movetalk' )->text(),
                    'help' => new HtmlSnippet( $this->msg( 'movepagetalktext' )->parseAsBlock() ),
                    'helpInline' => true,
                    'align' => 'inline',
                    'id' => 'wpMovetalk-field',
                ]
            );
        }
 
        if ( $this->permManager->userHasRight( $user, 'suppressredirect' ) ) {
            if ( $createRedirect ) {
                $isChecked = $this->leaveRedirect;
                $isDisabled = false;
            } else {
                $isChecked = false;
                $isDisabled = true;
            }
            $fields[] = new FieldLayout(
                new CheckboxInputWidget( [
                    'name' => 'wpLeaveRedirect',
                    'id' => 'wpLeaveRedirect',
                    'value' => '1',
                    'selected' => $isChecked,
                    'disabled' => $isDisabled,
                ] ),
                [
                    'label' => $this->msg( 'move-leave-redirect' )->text(),
                    'align' => 'inline',
                ]
            );
        }
 
        if ( $hasRedirects ) {
            $fields[] = new FieldLayout(
                new CheckboxInputWidget( [
                    'name' => 'wpFixRedirects',
                    'id' => 'wpFixRedirects',
                    'value' => '1',
                    'selected' => $this->fixRedirects,
                ] ),
                [
                    'label' => $this->msg( 'fix-double-redirects' )->text(),
                    'align' => 'inline',
                ]
            );
        }
 
        if ( $canMoveSubpage ) {
            $maximumMovedPages = $this->getConfig()->get( MainConfigNames::MaximumMovedPages );
            $fields[] = new FieldLayout(
                new CheckboxInputWidget( [
                    'name' => 'wpMovesubpages',
                    'id' => 'wpMovesubpages',
                    'value' => '1',
                    'selected' => $this->moveSubpages,
                ] ),
                [
                    'label' => new HtmlSnippet(
                        $this->msg(
                            ( $this->oldTitle->hasSubpages()
                                ? 'move-subpages'
                                : 'move-talk-subpages' )
                        )->numParams( $maximumMovedPages )->params( $maximumMovedPages )->parse()
                    ),
                    'align' => 'inline',
                ]
            );
        }
 
        # Don't allow watching if user is not logged in
        if ( $user->isRegistered() ) {
            $watchChecked = ( $this->watch || $this->userOptionsLookup->getBoolOption( $user, 'watchmoves' )
                || $this->watchlistManager->isWatched( $user, $this->oldTitle ) );
            $fields[] = new FieldLayout(
                new CheckboxInputWidget( [
                    'name' => 'wpWatch',
                    'id' => 'watch', # ew
                    'infusable' => true,
                    'value' => '1',
                    'selected' => $watchChecked,
                ] ),
                [
                    'label' => $this->msg( 'move-watch' )->text(),
                    'align' => 'inline',
                ]
            );
 
            # Add a dropdown for watchlist expiry times in the form, T261230
            if ( $this->getConfig()->get( MainConfigNames::WatchlistExpiry ) ) {
                $expiryOptions = WatchAction::getExpiryOptions(
                    $this->getContext(),
                    $this->watchedItemStore->getWatchedItem( $user, $this->oldTitle )
                );
                # Reformat the options to match what DropdownInputWidget wants.
                $options = [];
                foreach ( $expiryOptions['options'] as $label => $value ) {
                    $options[] = [ 'data' => $value, 'label' => $label ];
                }
 
                $fields[] = new FieldLayout(
                    new DropdownInputWidget( [
                        'name' => 'wpWatchlistExpiry',
                        'id' => 'wpWatchlistExpiry',
                        'infusable' => true,
                        'options' => $options,
                    ] ),
                    [
                        'label' => $this->msg( 'confirm-watch-label' )->text(),
                        'id' => 'wpWatchlistExpiryLabel',
                        'infusable' => true,
                        'align' => 'inline',
                    ]
                );
            }
        }
 
        $hiddenFields = '';
        if ( $moveOverShared ) {
            $hiddenFields .= Html::hidden( 'wpMoveOverSharedFile', '1' );
        }
 
        if ( $deleteAndMove ) {
            // Suppress Phan false positives here - the array is either one or two elements, and is assigned above
            // so the count clearly distinguishes the two cases
            if ( count( $deleteAndMove ) == 2 ) {
                $msg = $this->msg( 'delete_and_move_confirm_2',
                    $deleteAndMove[0]->getPrefixedText(),
                    $deleteAndMove[1]->getPrefixedText()
                )->text();
            } else {
                // @phan-suppress-next-line PhanTypePossiblyInvalidDimOffset False positive
                $msg = $this->msg( 'delete_and_move_confirm', $deleteAndMove[0]->getPrefixedText() )->text();
            }
            $fields[] = new FieldLayout(
                new CheckboxInputWidget( [
                    'name' => 'wpDeleteAndMove',
                    'id' => 'wpDeleteAndMove',
                    'value' => '1',
                ] ),
                [
                    'label' => $msg,
                    'align' => 'inline',
                ]
            );
        }
        if ( $moveOverProtection ) {
            $fields[] = new FieldLayout(
                new CheckboxInputWidget( [
                    'name' => 'wpMoveOverProtection',
                    'id' => 'wpMoveOverProtection',
                    'value' => '1',
                ] ),
                [
                    'label' => $this->msg( 'move_over_protection_confirm' )->text(),
                    'align' => 'inline',
                ]
            );
        }
 
        $fields[] = new FieldLayout(
            new ButtonInputWidget( [
                'name' => 'wpMove',
                'value' => $this->msg( 'movepagebtn' )->text(),
                'label' => $this->msg( 'movepagebtn' )->text(),
                'flags' => [ 'primary', 'progressive' ],
                'type' => 'submit',
                'accessKey' => Linker::accesskey( 'move' ),
                'title' => Linker::titleAttrib( 'move' ),
            ] ),
            [
                'align' => 'top',
            ]
        );
 
        $fieldset = new FieldsetLayout( [
            'label' => $this->msg( 'move-page-legend' )->text(),
            'id' => 'mw-movepage-table',
            'items' => $fields,
        ] );
 
        $form = new FormLayout( [
            'method' => 'post',
            'action' => $this->getPageTitle()->getLocalURL( 'action=submit' ),
            'id' => 'movepage',
        ] );
        $form->appendContent(
            $fieldset,
            new HtmlSnippet(
                $hiddenFields .
                Html::hidden( 'wpOldTitle', $this->oldTitle->getPrefixedText() ) .
                Html::hidden( 'wpEditToken', $user->getEditToken() )
            )
        );
 
        $out->addHTML(
            ( new PanelLayout( [
                'classes' => [ 'movepage-wrapper' ],
                'expanded' => false,
                'padded' => true,
                'framed' => true,
                'content' => $form,
            ] ) )->toString()
        );
        if ( $this->getAuthority()->isAllowed( 'editinterface' ) ) {
            $link = $this->getLinkRenderer()->makeKnownLink(
                $this->msg( 'movepage-reason-dropdown' )->inContentLanguage()->getTitle(),
                $this->msg( 'movepage-edit-reasonlist' )->text(),
                [],
                [ 'action' => 'edit' ]
            );
            $out->addHTML( Html::rawElement( 'p', [ 'class' => 'mw-movepage-editreasons' ], $link ) );
        }
 
        $this->showLogFragment( $this->oldTitle );
        $this->showSubpages( $this->oldTitle );
    }
 
    private function vacateTitle( Title $title, User $user, Title $oldTitle ): StatusValue {
        if ( !$title->exists() ) {
            return StatusValue::newGood();
        }
        $redir2 = $title->isSingleRevRedirect();
 
        $permStatus = $this->permManager->getPermissionStatus(
            $redir2 ? 'delete-redirect' : 'delete',
            $user, $title
        );
        if ( !$permStatus->isGood() ) {
            if ( $redir2 ) {
                if ( !$this->permManager->userCan( 'delete', $user, $title ) ) {
                    // Cannot delete-redirect, or delete normally
                    return $permStatus;
                } else {
                    // Cannot delete-redirect, but can delete normally,
                    // so log as a normal deletion
                    $redir2 = false;
                }
            } else {
                // Cannot delete normally
                return $permStatus;
            }
        }
 
        $page = $this->wikiPageFactory->newFromTitle( $title );
        $delPage = $this->deletePageFactory->newDeletePage( $page, $user );
 
        // Small safety margin to guard against concurrent edits
        if ( $delPage->isBatchedDelete( 5 ) ) {
            return StatusValue::newFatal( 'movepage-delete-first' );
        }
 
        $reason = $this->msg( 'delete_and_move_reason', $oldTitle->getPrefixedText() )->inContentLanguage()->text();
 
        // Delete an associated image if there is
        if ( $title->getNamespace() === NS_FILE ) {
            $file = $this->repoGroup->getLocalRepo()->newFile( $title );
            $file->load( IDBAccessObject::READ_LATEST );
            if ( $file->exists() ) {
                $file->deleteFile( $reason, $user, false );
            }
        }
 
        $deletionLog = $redir2 ? 'delete_redir2' : 'delete';
        $deleteStatus = $delPage
            ->setLogSubtype( $deletionLog )
            // Should be redundant thanks to the isBatchedDelete check above.
            ->forceImmediate( true )
            ->deleteUnsafe( $reason );
 
        return $deleteStatus;
    }
 
    private function doSubmit() {
        $user = $this->getUser();
 
        if ( $user->pingLimiter( 'move' ) ) {
            throw new ThrottledError;
        }
 
        $ot = $this->oldTitle;
        $nt = $this->newTitle;
 
        # don't allow moving to pages with # in
        if ( !$nt || $nt->hasFragment() ) {
            $this->showForm( StatusValue::newFatal( 'badtitletext' ) );
 
            return;
        }
 
        $oldTalk = $ot->getTalkPageIfDefined();
        $newTalk = $nt->getTalkPageIfDefined();
 
        if ( $ot->isTalkPage() || $nt->isTalkPage() ) {
            $this->moveTalk = false;
        }
 
        # Show a warning if the target file exists on a shared repo
        if ( $nt->getNamespace() === NS_FILE
            && !( $this->moveOverShared && $this->permManager->userHasRight( $user, 'reupload-shared' ) )
            && !$this->repoGroup->getLocalRepo()->findFile( $nt )
            && $this->repoGroup->findFile( $nt )
        ) {
            $this->showForm( StatusValue::newFatal( 'file-exists-sharedrepo' ) );
 
            return;
        }
 
        # Show a warning if procted (showForm handles the warning )
        if ( !$this->moveOverProtection ) {
            if ( $this->restrictionStore->isProtected( $nt, 'create' ) ) {
                $this->showForm();
                return;
            }
            if ( $this->moveTalk && $newTalk && $this->restrictionStore->isProtected( $newTalk, 'create' ) ) {
                $this->showForm();
                return;
            }
        }
 
        $handler = $this->contentHandlerFactory->getContentHandler( $ot->getContentModel() );
 
        if ( !$handler->supportsRedirects() || (
            // Do not create redirects for wikitext message overrides (T376399).
            // Maybe one day they will have a custom content model and this special case won't be needed.
            $ot->getNamespace() === NS_MEDIAWIKI &&
            $ot->getContentModel() === CONTENT_MODEL_WIKITEXT
        ) ) {
            $createRedirect = false;
        } elseif ( $this->permManager->userHasRight( $user, 'suppressredirect' ) ) {
            $createRedirect = $this->leaveRedirect;
        } else {
            $createRedirect = true;
        }
 
        // Check perms
        $mp = $this->movePageFactory->newMovePage( $ot, $nt );
        $permStatusMain = $mp->authorizeMove( $this->getAuthority(), $this->reason );
        $permStatusMain->merge( $mp->isValidMove() );
 
        $onlyMovingTalkSubpages = false;
        if ( $this->moveTalk && $oldTalk && $newTalk ) {
            $mpTalk = $this->movePageFactory->newMovePage( $oldTalk, $newTalk );
            $permStatusTalk = $mpTalk->authorizeMove( $this->getAuthority(), $this->reason );
            $permStatusTalk->merge( $mpTalk->isValidMove() );
            // Per the definition of $considerTalk in showForm you might be trying to move
            // subpages of the talk even if the talk itself doesn't exist, so let that happen
            if ( !$permStatusTalk->isOK() &&
                 !$permStatusTalk->hasMessagesExcept( 'movepage-source-doesnt-exist' )
            ) {
                $permStatusTalk->setOK( true );
                $onlyMovingTalkSubpages = true;
            }
        } else {
            $permStatusTalk = StatusValue::newGood();
            $mpTalk = null;
        }
 
        if ( $this->deleteAndMove ) {
            // This is done before the deletion (in order to minimize the impact of T265792)
            // so ignore "it already exists" checks (they will be repeated after the deletion)
            if ( $permStatusMain->hasMessagesExcept( 'redirectexists', 'articleexists' ) ||
                ( !$onlyMovingTalkSubpages &&
                  $permStatusTalk->hasMessagesExcept( 'redirectexists', 'articleexists' ) )
            ) {
                $this->showForm( $permStatusMain, $permStatusTalk );
                return;
            }
            // If the code gets here, then it's passed all permission checks and the move should succeed
            // so start deleting things.
            // FIXME: This isn't atomic; it could delete things even if the move will later fail (T265792)
            // For example, if you manually specify deleteAndMove in the URL (the form UI won't show the checkbox)
            // and have `delete-redirect` and the main page is a single-revision redirect
            // but the talk page isn't it will delete the redirect and then fail, leaving it deleted
            $deleteStatus = $this->vacateTitle( $nt, $user, $ot );
            if ( !$deleteStatus->isGood() ) {
                $this->showForm( $deleteStatus );
                return;
            }
            if ( $this->moveTalk && $oldTalk && $newTalk ) {
                $deleteStatus = $this->vacateTitle( $newTalk, $user, $oldTalk );
                if ( !$deleteStatus->isGood() ) {
                    // Ideally we would specify that the subject page redirect was deleted
                    // but see the FIXME above
                    $this->showForm( StatusValue::newGood(), $deleteStatus );
                    return;
                }
            }
        } elseif ( !$permStatusMain->isOK() || !$permStatusTalk->isOK() ) {
            // If we're not going to delete then bail on all errors
            $this->showForm( $permStatusMain, $permStatusTalk );
            return;
        }
 
        // Now we've confirmed you can do all of the moves you want and proceeding won't leave things inconsistent
        // so actually move the main page
        $mainStatus = $mp->moveIfAllowed( $this->getAuthority(), $this->reason, $createRedirect );
        if ( !$mainStatus->isOK() ) {
            $this->showForm( $mainStatus );
            return;
        }
 
        $fixRedirects = $this->fixRedirects && $this->getConfig()->get( MainConfigNames::FixDoubleRedirects );
        if ( $fixRedirects ) {
            DoubleRedirectJob::fixRedirects( 'move', $ot );
        }
 
        // Now try to move the talk page
        $maximumMovedPages = $this->getConfig()->get( MainConfigNames::MaximumMovedPages );
 
        $moveStatuses = [];
        $talkStatus = null;
        if ( $mpTalk && !$onlyMovingTalkSubpages ) {
            $talkStatus = $mpTalk->moveIfAllowed( $this->getAuthority(), $this->reason, $createRedirect );
            // moveIfAllowed returns a Status with an array as a value, however moveSubpages per-title statuses
            // have strings as values. Massage this status into the moveSubpages format so it fits in with
            // the later calls
            '@phan-var Status<string> $talkStatus';
            $talkStatus->value = $newTalk->getPrefixedText();
            $moveStatuses[$oldTalk->getPrefixedText()] = $talkStatus;
        }
 
        // Now try to move subpages if asked
        if ( $this->moveSubpages ) {
            if ( $this->permManager->userCan( 'move-subpages', $user, $ot ) ) {
                $mp->setMaximumMovedPages( $maximumMovedPages - count( $moveStatuses ) );
                $subpageStatus = $mp->moveSubpagesIfAllowed( $this->getAuthority(), $this->reason, $createRedirect );
                $moveStatuses = array_merge( $moveStatuses, $subpageStatus->value );
            }
            if ( $mpTalk && $oldTalk && $maximumMovedPages > count( $moveStatuses ) &&
                 $this->permManager->userCan( 'move-subpages', $user, $oldTalk ) &&
                 ( $onlyMovingTalkSubpages || $talkStatus->isOK() )
            ) {
                $mpTalk->setMaximumMovedPages( $maximumMovedPages - count( $moveStatuses ) );
                $talkSubStatus = $mpTalk->moveSubpagesIfAllowed(
                    $this->getAuthority(), $this->reason, $createRedirect
                );
                $moveStatuses = array_merge( $moveStatuses, $talkSubStatus->value );
            }
        }
 
        // Now we've moved everything we're going to move, so post-process the output,
        // create the UI, and fix double redirects
        $out = $this->getOutput();
        $out->setPageTitleMsg( $this->msg( 'pagemovedsub' ) );
 
        $linkRenderer = $this->getLinkRenderer();
        $oldLink = $linkRenderer->makeLink(
            $ot,
            null,
            [ 'id' => 'movepage-oldlink' ],
            [ 'redirect' => 'no' ]
        );
        $newLink = $linkRenderer->makeKnownLink(
            $nt,
            null,
            [ 'id' => 'movepage-newlink' ]
        );
        $oldText = $ot->getPrefixedText();
        $newText = $nt->getPrefixedText();
 
        $out->addHTML( $this->msg( 'movepage-moved' )->rawParams( $oldLink,
            $newLink )->params( $oldText, $newText )->parseAsBlock() );
        $out->addWikiMsg( isset( $mainStatus->getValue()['redirectRevision'] ) ?
            'movepage-moved-redirect' :
            'movepage-moved-noredirect' );
 
        $this->getHookRunner()->onSpecialMovepageAfterMove( $this, $ot, $nt );
 
        $extraOutput = [];
        foreach ( $moveStatuses as $oldSubpage => $subpageStatus ) {
            if ( $subpageStatus->hasMessage( 'movepage-max-pages' ) ) {
                $extraOutput[] = $this->msg( 'movepage-max-pages' )
                    ->numParams( $maximumMovedPages )->escaped();
                    continue;
            }
            $oldSubpage = Title::newFromText( $oldSubpage );
            $newSubpage = Title::newFromText( $subpageStatus->value );
            if ( $subpageStatus->isGood() ) {
                if ( $fixRedirects ) {
                    DoubleRedirectJob::fixRedirects( 'move', $oldSubpage );
                }
                $oldLink = $linkRenderer->makeLink( $oldSubpage, null, [], [ 'redirect' => "no" ] );
                $newLink = $linkRenderer->makeKnownLink( $newSubpage );
 
                $extraOutput[] = $this->msg( 'movepage-page-moved' )->rawParams(
                    $oldLink, $newLink
                )->escaped();
            } elseif ( $subpageStatus->hasMessage( 'articleexists' )
                || $subpageStatus->hasMessage( 'redirectexists' )
            ) {
                $link = $linkRenderer->makeKnownLink( $newSubpage );
                $extraOutput[] = $this->msg( 'movepage-page-exists' )->rawParams( $link )->escaped();
            } else {
                $oldLink = $linkRenderer->makeKnownLink( $oldSubpage );
                if ( $newSubpage ) {
                    $newLink = $linkRenderer->makeLink( $newSubpage );
                } else {
                    // It's not a valid title
                    $newLink = htmlspecialchars( $subpageStatus->value );
                }
                $extraOutput[] = $this->msg( 'movepage-page-unmoved' )
                        ->rawParams( $oldLink, $newLink )->escaped();
            }
        }
 
        if ( $extraOutput !== [] ) {
            $out->addHTML( "<ul>\n<li>" . implode( "</li>\n<li>", $extraOutput ) . "</li>\n</ul>" );
        }
 
        # Deal with watches (we don't watch subpages)
        # Get text from expiry selection dropdown, T261230
        $expiry = $this->getRequest()->getText( 'wpWatchlistExpiry' );
        if ( $this->getConfig()->get( MainConfigNames::WatchlistExpiry ) && $expiry !== '' ) {
            $expiry = ExpiryDef::normalizeExpiry( $expiry, TS::ISO_8601 );
        } else {
            $expiry = null;
        }
 
        $this->watchlistManager->setWatch(
            $this->watch,
            $this->getAuthority(),
            $ot,
            $expiry
        );
 
        $this->watchlistManager->setWatch(
            $this->watch,
            $this->getAuthority(),
            $nt,
            $expiry
        );
    }
 
    private function showLogFragment( Title $title ) {
        $moveLogPage = new LogPage( 'move' );
        $out = $this->getOutput();
        $out->addHTML( Html::element( 'h2', [], $moveLogPage->getName()->text() ) );
        LogEventsList::showLogExtract( $out, 'move', $title );
    }
 
    private function showSubpages( $title ) {
        $maximumMovedPages = $this->getConfig()->get( MainConfigNames::MaximumMovedPages );
        $nsHasSubpages = $this->nsInfo->hasSubpages( $title->getNamespace() );
        $subpages = $title->getSubpages( $maximumMovedPages + 1 );
        $count = $subpages instanceof TitleArrayFromResult ? $subpages->count() : 0;
 
        $titleIsTalk = $title->isTalkPage();
        $subpagesTalk = $title->getTalkPage()->getSubpages( $maximumMovedPages + 1 );
        $countTalk = $subpagesTalk instanceof TitleArrayFromResult ? $subpagesTalk->count() : 0;
        $totalCount = $count + $countTalk;
 
        if ( !$nsHasSubpages && $countTalk == 0 ) {
            return;
        }
 
        $this->getOutput()->wrapWikiMsg(
            '== $1 ==',
            [ 'movesubpage', ( $titleIsTalk ? $count : $totalCount ) ]
        );
 
        if ( $nsHasSubpages ) {
            $this->showSubpagesList(
                $subpages, $count, 'movesubpagetext', 'movesubpagetext-truncated', true
            );
        }
 
        if ( !$titleIsTalk && $countTalk > 0 ) {
            $this->showSubpagesList(
                $subpagesTalk, $countTalk, 'movesubpagetalktext', 'movesubpagetalktext-truncated'
            );
        }
    }
 
    private function showSubpagesList(
        TitleArrayFromResult $subpages, int $pagecount, string $msg, string $truncatedMsg, bool $noSubpageMsg = false
    ) {
        $out = $this->getOutput();
 
        # No subpages.
        if ( $pagecount == 0 && $noSubpageMsg ) {
            $out->addWikiMsg( 'movenosubpage' );
            return;
        }
 
        $maximumMovedPages = $this->getConfig()->get( MainConfigNames::MaximumMovedPages );
 
        if ( $pagecount > $maximumMovedPages ) {
            $subpages = $this->truncateSubpagesList( $subpages );
            $out->addWikiMsg( $truncatedMsg, $this->getLanguage()->formatNum( $maximumMovedPages ) );
        } else {
            $out->addWikiMsg( $msg, $this->getLanguage()->formatNum( $pagecount ) );
        }
        $out->addHTML( "<ul>\n" );
 
        $this->linkBatchFactory->newLinkBatch( $subpages )
            ->setCaller( __METHOD__ )
            ->execute();
        $linkRenderer = $this->getLinkRenderer();
 
        foreach ( $subpages as $subpage ) {
            $link = $linkRenderer->makeLink( $subpage );
            $out->addHTML( "<li>$link</li>\n" );
        }
        $out->addHTML( "</ul>\n" );
    }
 
    private function truncateSubpagesList( iterable $subpages ): array {
        $returnArray = [];
        foreach ( $subpages as $subpage ) {
            $returnArray[] = $subpage;
            if ( count( $returnArray ) >= $this->getConfig()->get( MainConfigNames::MaximumMovedPages ) ) {
                break;
            }
        }
        return $returnArray;
    }
 
    public function prefixSearchSubpages( $search, $limit, $offset ) {
        return $this->prefixSearchString( $search, $limit, $offset, $this->searchEngineFactory );
    }
 
    protected function getGroupName() {
        return 'pagetools';
    }
}
 
class_alias( SpecialMovePage::class, 'MovePageForm' );