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<?php

namespace Mautic\CoreBundle\Loader\EnvVars;

use Symfony\Component\HttpFoundation\ParameterBag;

class ConfigEnvVars implements EnvVarsInterface
{
    public static function load(ParameterBag $config, ParameterBag $defaultConfig, ParameterBag $envVars): void
    {
        foreach ($config->all() as $key => $value) {
            if (!empty($value) && is_string($value) && preg_match('/getenv\((.*?)\)/', $value, $match)) {
                $value = (string) getenv($match[1]);
            }

            // JSON encode arrays
            $defaultValue = $defaultConfig->get($key);
            if (is_array($value) || is_array($defaultValue)) {
                $jsonValue = $value ?: $defaultValue;
                $value     = json_encode($jsonValue);
            }

            // Set the environment variable
            $envKey = sprintf('MAUTIC_%s', mb_strtoupper($key));
            $envVars->set($envKey, $value);
        }
    }
}