rdfio/RDFIO

<?php

/**
 * SpecialRDFIOAdmin is a Special page for setting up the database tables for an ARC2 RDF Store
 * @author samuel.lampa@gmail.com
 * @package RDFIO
 */
class RDFIOAdmin extends RDFIOSpecialPage {

    function __construct() {
        parent::__construct( 'RDFIOAdmin', 'rdfio-admin' );
    }

    /**
     * @param string $par (unused)
     */
    function execute( $par ) {
        unset( $par ); // Needed to suppress warning about unused variable which we include just for consistency.

        // Require rdfio-admin permission for the current user
        if ( !$this->userCanExecute( $this->getUser() ) ) {
            throw new PermissionsError( 'rdfio-admin', array( 'rdfio-specialpage-access-permission-missing' ) );
        }

        global $wgDBserver, $wgDBname, $wgDBuser, $wgDBpassword, $wgDBprefix;

        $wUser = $this->getUser();
        $wRequest = $this->getRequest();
        $wOut = $this->getOutput();

        $this->setHeaders();

        $rdfiogAction = $wRequest->getText( 'rdfio-action', '' );

        $wOut->addHTML('<h3>' . wfMessage( 'rdfio-triplestore-setup' )->parse() . '</h3>' );

        $arc2StoreConfig = array(
            'db_host' => $wgDBserver,
            'db_name' => $wgDBname,
            'db_user' => $wgDBuser,
            'db_pwd' => $wgDBpassword,
            'store_name' => $wgDBprefix . 'arc2store', // Determines table prefix
        );
        $store = ARC2::getStore( $arc2StoreConfig );
        if ( $store->isSetUp() ) {
            $this->infoMsg( wfMessage( 'rdfio-triplestore-is-already-setup' )->parse() );
        } else {
            if ( $rdfiogAction === 'setup' ) {
                $this->setUpStore( $store, $wUser, $wRequest );
            } else {
                $this->infoMsg( 'Store is <b>not</b> set up' );
                $setupStoreForm = '
                <form method="post"
                    action=""
                    name="createEditQuery">
                    <input
                        type="submit"
                        name="submit-button"
                        value="' . wfMessage( 'rdfio-set-up-triplestore' )->parse() . '">' .
                    Html::Hidden(  'rdfio-action', 'setup' ) .
                    Html::Hidden( 'token', $wUser->getEditToken() ) .
                '</form>';
                $wOut->addHTML( $setupStoreForm );
            }
        }

        $wOut->addWikiText( "\n===" . wfMessage( 'rdfio-data-sources' )->parse() . "===\n" );
        $wOut->addWikiText( "\n{{#ask: [[Category:RDFIO Data Source]]
                    |?Equivalent URI
                    |?RDFIO Import Type
                    |format=table
                    |mainlabel=Data Source
                    |limit=10
                    }}\n" );

        $wOut->addWikiText( "\n===" . wfMessage( 'rdfio-pages-and-templates' )->parse() . "===\n" );
        $wOut->addHTML( wfMessage( 'rdfio-associate-template-with-category-howto' )->parse() );
        $wOut->addWikiText( "{{#ask:  [[:Category:+]]
                    |?Equivalent URI
                    |?Has template
                    |format=table
                    |mainlabel=" . wfMessage( 'rdfio-category' )->parse() . "
                    |limit=10
                    }}" );
    }

    /**
     * Check permissions and set up the ARC2 store if allowed.
     * @param $store
     * @param $wUser
     * @param $wRequest
     */
    private function setUpStore( $store, $wUser, $wRequest ) {
        if ( !$this->editTokenOk( $wUser, $wRequest ) ) {
            $this->errorMsg( wfMessage( 'rdfio-csrf-detected' )->parse() );
            return;
        }

        if ( !in_array( 'sysop', $wUser->getGroups() ) ) {
            $this->errorMsg( wfMessage( 'rdfio-permission-error-only-sysops' )->parse() );
            return;
        }

        $store->setUp();

        if ( $store->getErrors() ) {
            $this->errorMsg( wfMessage( 'rdfio-error-setting-up-store' )->parse() . ': ' . implode( "\n", $store->getErrors() ));
            return;
        }

        if ( !$store->isSetUp() ) {
            $this->errorMsg( wfMessage( 'rdfio-error-setting-up-store' )->parse() . '. ' . wfMessage( 'rdfio-error-reason-unknown-no-errors-reported' )->parse() );
            return;
        }

        $this->successMsg( wfMessage( 'rdfio-triplestore-successfully-set-up' )->parse() );
    }
}