ApiDelete.php

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<?php
class ApiDelete extends ApiBase {
    public function execute() {
        $this->useTransactionalTimeLimit();

        $params = $this->extractRequestParams();

        $pageObj = $this->getTitleOrPageId( $params, 'fromdbmaster' );
        if ( !$pageObj->exists() ) {
            $this->dieUsageMsg( 'notanarticle' );
        }

        $titleObj = $pageObj->getTitle();
        $reason = $params['reason'];
        $user = $this->getUser();

        // Check that the user is allowed to carry out the deletion
        $errors = $titleObj->getUserPermissionsErrors( 'delete', $user );
        if ( count( $errors ) ) {
            $this->dieUsageMsg( $errors[0] );
        }

        // If change tagging was requested, check that the user is allowed to tag,
        // and the tags are valid
        if ( count( $params['tags'] ) ) {
            $tagStatus = ChangeTags::canAddTagsAccompanyingChange( $params['tags'], $user );
            if ( !$tagStatus->isOK() ) {
                $this->dieStatus( $tagStatus );
            }
        }

        if ( $titleObj->getNamespace() == NS_FILE ) {
            $status = self::deleteFile(
                $pageObj,
                $user,
                $params['oldimage'],
                $reason,
                false,
                $params['tags']
            );
        } else {
            $status = self::delete( $pageObj, $user, $reason, $params['tags'] );
        }

        if ( is_array( $status ) ) {
            $this->dieUsageMsg( $status[0] );
        }
        if ( !$status->isGood() ) {
            $this->dieStatus( $status );
        }

        // Deprecated parameters
        if ( $params['watch'] ) {
            $watch = 'watch';
        } elseif ( $params['unwatch'] ) {
            $watch = 'unwatch';
        } else {
            $watch = $params['watchlist'];
        }
        $this->setWatch( $watch, $titleObj, 'watchdeletion' );

        $r = [
            'title' => $titleObj->getPrefixedText(),
            'reason' => $reason,
            'logid' => $status->value
        ];
        $this->getResult()->addValue( null, $this->getModuleName(), $r );
    }

    protected static function delete( Page $page, User $user, &$reason = null, $tags = [] ) {
        $title = $page->getTitle();

        // Auto-generate a summary, if necessary
        if ( is_null( $reason ) ) {
            // Need to pass a throwaway variable because generateReason expects
            // a reference
            $hasHistory = false;
            $reason = $page->getAutoDeleteReason( $hasHistory );
            if ( $reason === false ) {
                return [ [ 'cannotdelete', $title->getPrefixedText() ] ];
            }
        }

        $error = '';

        // Luckily, Article.php provides a reusable delete function that does the hard work for us
        return $page->doDeleteArticleReal( $reason, false, 0, true, $error, $user, $tags );
    }

    protected static function deleteFile( Page $page, User $user, $oldimage,
        &$reason = null, $suppress = false, $tags = []
    ) {
        $title = $page->getTitle();

        $file = $page->getFile();
        if ( !$file->exists() || !$file->isLocal() || $file->getRedirected() ) {
            return self::delete( $page, $user, $reason, $tags );
        }

        if ( $oldimage ) {
            if ( !FileDeleteForm::isValidOldSpec( $oldimage ) ) {
                return [ [ 'invalidoldimage' ] ];
            }
            $oldfile = RepoGroup::singleton()->getLocalRepo()->newFromArchiveName( $title, $oldimage );
            if ( !$oldfile->exists() || !$oldfile->isLocal() || $oldfile->getRedirected() ) {
                return [ [ 'nodeleteablefile' ] ];
            }
        }

        if ( is_null( $reason ) ) { // Log and RC don't like null reasons
            $reason = '';
        }

        return FileDeleteForm::doDelete( $title, $file, $oldimage, $reason, $suppress, $user, $tags );
    }

    public function mustBePosted() {
        return true;
    }

    public function isWriteMode() {
        return true;
    }

    public function getAllowedParams() {
        return [
            'title' => null,
            'pageid' => [
                ApiBase::PARAM_TYPE => 'integer'
            ],
            'reason' => null,
            'tags' => [
                ApiBase::PARAM_TYPE => 'tags',
                ApiBase::PARAM_ISMULTI => true,
            ],
            'watch' => [
                ApiBase::PARAM_DFLT => false,
                ApiBase::PARAM_DEPRECATED => true,
            ],
            'watchlist' => [
                ApiBase::PARAM_DFLT => 'preferences',
                ApiBase::PARAM_TYPE => [
                    'watch',
                    'unwatch',
                    'preferences',
                    'nochange'
                ],
            ],
            'unwatch' => [
                ApiBase::PARAM_DFLT => false,
                ApiBase::PARAM_DEPRECATED => true,
            ],
            'oldimage' => null,
        ];
    }

    public function needsToken() {
        return 'csrf';
    }

    protected function getExamplesMessages() {
        return [
            'action=delete&title=Main%20Page&token=123ABC'
                => 'apihelp-delete-example-simple',
            'action=delete&title=Main%20Page&token=123ABC&reason=Preparing%20for%20move'
                => 'apihelp-delete-example-reason',
        ];
    }

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