<?php

declare(strict_types=1);

namespace Box\Mod\Mailgateway;

use Pimple\Container;

class TemplateInstaller
{
    public function __construct(private Container $di) {}

    public function install(): void
    {
        $code = 'mailgateway_sender_mismatch';
        $email = $this->di['mod_service']('email');
        // Preserve existing custom content and enabled/disabled preference.
        if ($email->getTemplateRepository()->findOneByActionCode($code) !== null) {
            return;
        }
        $source = file_get_contents(__DIR__ . '/templates/email/' . $code . '.html.twig');
        if (!is_string($source)
            || !preg_match('/{%\s*block subject\s*%}(.*?){%\s*endblock\s*%}/s', $source, $subject)
            || !preg_match('/{%\s*block content\s*%}(.*?){%\s*endblock\s*%}/s', $source, $content)) {
            throw new \RuntimeException('Mail Gateway sender-mismatch template is missing or invalid');
        }
        // This existing custom action code does not use the mod_* discovery convention.
        $email->templateCreate($code, trim($subject[1]), trim($content[1]), 1, 'mailgateway');
    }
}