<?php

namespace App\Http\Middleware;

use Illuminate\Http\Middleware\TrustProxies as Middleware;
use Illuminate\Http\Request;

class TrustProxies extends Middleware
{
    /**
     * The trusted proxies for this application.
     *
     * @var array<int, string>|string|null
     */
    protected $proxies = "*";

    /**
     * The headers that should be used to detect proxies.
     *
     * @var int
     */
    protected $headers =
        Request::HEADER_X_FORWARDED_FOR |
        Request::HEADER_X_FORWARDED_HOST |
        Request::HEADER_X_FORWARDED_PORT |
        Request::HEADER_X_FORWARDED_PROTO |
        Request::HEADER_X_FORWARDED_PREFIX;

    /**
     * Retrieve trusted header name(s), falling back to defaults if config not set.
     *
     * @return int A bit field of Request::HEADER_*, to set which headers to trust from your proxies.
     */
    protected function getTrustedHeaderNames()
    {
        switch ($this->headers) {
            case 'HEADER_X_FORWARDED_AWS_ELB':
            case Request::HEADER_X_FORWARDED_AWS_ELB:
                return Request::HEADER_X_FORWARDED_AWS_ELB;

            case 'HEADER_FORWARDED':
            case Request::HEADER_FORWARDED:
                return Request::HEADER_FORWARDED;

            case 'HEADER_X_FORWARDED_FOR':
            case Request::HEADER_X_FORWARDED_FOR:
                return Request::HEADER_X_FORWARDED_FOR;

            case 'HEADER_X_FORWARDED_HOST':
            case Request::HEADER_X_FORWARDED_HOST:
                return Request::HEADER_X_FORWARDED_HOST;

            case 'HEADER_X_FORWARDED_PORT':
            case Request::HEADER_X_FORWARDED_PORT:
                return Request::HEADER_X_FORWARDED_PORT;

            case 'HEADER_X_FORWARDED_PROTO':
            case Request::HEADER_X_FORWARDED_PROTO:
                return Request::HEADER_X_FORWARDED_PROTO;

            case 'HEADER_X_FORWARDED_PREFIX':
            case Request::HEADER_X_FORWARDED_PREFIX:
                return Request::HEADER_X_FORWARDED_PREFIX;

            default:
                return Request::HEADER_X_FORWARDED_FOR | Request::HEADER_X_FORWARDED_HOST | Request::HEADER_X_FORWARDED_PORT | Request::HEADER_X_FORWARDED_PROTO | Request::HEADER_X_FORWARDED_AWS_ELB | Request::HEADER_X_FORWARDED_PREFIX;
        }
    }

}