class.ilFileSystemConfigNotChangedObjective.php

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<?php

use ILIAS\Setup;

/******************************************************************************
 *
 * This file is part of ILIAS, a powerful learning management system.
 *
 * ILIAS is licensed with the GPL-3.0, you should have received a copy
 * of said license along with the source code.
 *
 * If this is not the case or you just want to try ILIAS, you'll find
 * us at:
 *      https://www.ilias.de
 *      https://github.com/ILIAS-eLearning
 *
 *****************************************************************************/
class ilFileSystemConfigNotChangedObjective implements Setup\Objective
{
    protected \ilFileSystemSetupConfig $config;

    public function __construct(
        \ilFileSystemSetupConfig $config
    ) {
        $this->config = $config;
    }

    public function getHash(): string
    {
        return hash("sha256", self::class);
    }

    public function getLabel(): string
    {
        return "Config for Filesystems did not change.";
    }

    public function isNotable(): bool
    {
        return false;
    }

    public function getPreconditions(Setup\Environment $environment): array
    {
        return [
            new ilIniFilesLoadedObjective(),
            new ilFileSystemDirectoriesCreatedObjective($this->config)
        ];
    }

    public function achieve(Setup\Environment $environment): Setup\Environment
    {
        $ini = $environment->getResource(Setup\Environment::RESOURCE_ILIAS_INI);

        $current = $ini->readVariable("clients", "datadir");
        $new = $this->config->getDataDir();
        if ($current !== $new) {
            throw new Setup\UnachievableException(
                "You seem to try to move the ILIAS data-directory from '$current' " .
                "to '$new', the client.ini.php contains a different path then the " .
                "config you are using. This is not supported by the setup."
            );
        }

        return $environment;
    }

    public function isApplicable(Setup\Environment $environment): bool
    {
        $ini = $environment->getResource(Setup\Environment::RESOURCE_ILIAS_INI);

        return $ini->readVariable("clients", "datadir") !== $this->config->getDataDir();
    }
}