<?php

namespace App\Services\MailFlow;

class Branding
{
    public static function values(): array
    {
        return ['site_url' => admin_setting('app_url', config('app.url')),
            'logo_src' => self::attachments() ? 'cid:site-logo@dpl' : null];
    }

    public static function attachments(): array
    {
        $path = config('mailflow.logo_path');
        if (!$path || !is_file($path) || filesize($path) > 512 * 1024) { return []; }
        $bytes = file_get_contents($path);
        if (!str_starts_with($bytes, "\x89PNG\r\n\x1a\n")) { return []; }
        return [['filename' => 'site-logo.png', 'content' => base64_encode($bytes),
            'content_type' => 'image/png', 'content_id' => 'site-logo@dpl']];
    }
}