Laravel CPanel bounce email handler as a artisan command

CpanelEmailCallback.php

<?php

namespace App\Console\Commands;

use Illuminate\Console\Command;
use Illuminate\Support\Facades\Http;

class CpanelEmailCallback extends Command
{
    /**
     * The console command description.
     *
     * @var string
     */
    protected $description = 'Cpanel Email Callback';

    /**
     * The name and signature of the console command.
     *
     * @var string
     */
    protected $signature = 'cpanel_email_callback {path}';

    /**
     * Create a new command instance.
     *
     * @return void
     */
    public function __construct()
    {
        parent::__construct();
    }

    /**
     * Execute the console command.
     *
     * @return mixed
     */
    public function handle()
    {
        $path = $this->argument('path');
        $sep = DIRECTORY_SEPARATOR;
        $dir = $sep.trim(base_path($path), $sep);
        // example: php artisan cpanel_email_callback tests/_data/bounces
        // example: php artisan cpanel_email_callback ../mail/mailer-domain.email

        $this->processDir("{$dir}{$sep}*");
        $this->processDir("{$dir}{$sep}cur{$sep}*");
        $this->processDir("{$dir}{$sep}new{$sep}*");
        $this->processDir("{$dir}{$sep}.spam{$sep}cur{$sep}*");
        $this->processDir("{$dir}{$sep}.spam{$sep}new{$sep}*");
        $this->processDir("{$dir}{$sep}.Junk{$sep}cur{$sep}*");
        $this->processDir("{$dir}{$sep}.Junk{$sep}new{$sep}*");
    }

    public function processDir($dir)
    {
        \Log::info("Processing " . $dir);
        if (file_exists($dir)) {
            $files = array_filter(glob($dir . DIRECTORY_SEPARATOR . '*'), 'is_file');

            foreach($files as $file)
            {
                \Log::info("{$file} ...");
                $this->processFile($file);
            }
        }
    }

    public function processFile($file)
    {
        $message = file_get_contents($file);
        $matches = Array();
        preg_match('/Final-Recipient:\s?rfc822;\s?(.*)/', $message, $matches);
        $address = $matches[1];
        $bounceType = $this->bounceType($message);
        $env = \App::environment();

        if ($bounceType === 'soft' || $bounceType === 'hard') {
            $callbackApi = 'https://callback.api/api/v1/bounces';
            $url = "{$callbackApi}/{$bounceType}?email=".urlencode($address);
            \Log::info("Bounce {$url} ...");
          
            // TODO: upgrade to SES clone and do a POST here
            $response = Http::get($url);
            if ($env === 'prd') {
                unlink($handle);
            }
        }
    }

    /**
     * Check bounce type by message
     *
     * @param  string $message the entire message string
     * @return string          soft|hard|unknown
     */
    public function bounceType($message)
    {
        $matches = Array();
        preg_match('/Diagnostic-Code:\s?smtp;\s?(.*)/', $message, $matches);
        $dcode = $matches[1];

        \Log::info("Diagnostic-Code: ${dcode} ...");
        $codeStart = $dcode[0];

        if ($codeStart == '4') {
            return 'soft';
        } else if ($codeStart == '5') {
            return 'hard';
        }

        return 'unknown';
    }
}