class.ilMathJaxConfigStoredObjective.php

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<?php
 
/* Copyright (c) 2019 Richard Klees <richard.klees@concepts-and-training.de> Extended GPL, see docs/LICENSE */
 
use ILIAS\Setup;
 
class ilMathJaxConfigStoredObjective implements Setup\Objective
{
    protected $config;
 
    public function __construct(
        \ilMathJaxSetupConfig $config
    ) {
        $this->config = $config;
    }
 
    public function getHash() : string
    {
        return hash("sha256", self::class);
    }
 
    public function getLabel() : string
    {
        return "Store configuration of Services/MathJax";
    }
 
    public function isNotable() : bool
    {
        return false;
    }
 
    public function getPreconditions(Setup\Environment $environment) : array
    {
        return [
            new ilIniFilesLoadedObjective()
        ];
    }
 
    public function achieve(Setup\Environment $environment) : Setup\Environment
    {
        $ini = $environment->getResource(Setup\Environment::RESOURCE_ILIAS_INI);
 
        $ini->setVariable("tools", "latex", $this->config->getPathToLatexCGI());
 
        if (!$ini->write()) {
            throw new Setup\UnachievableException("Could not write ilias.ini.php");
        }
 
        return $environment;
    }
 
    public function isApplicable(Setup\Environment $environment) : bool
    {
        $ini = $environment->getResource(Setup\Environment::RESOURCE_ILIAS_INI);
 
        return $ini->readVariable("tools", "latex") !== $this->config->getPathToLatexCGI();
    }
}