/home/brandsfa/bigshoponly.com/app/Http/Middleware/APIGuestMiddleware.php
<?php

namespace App\Http\Middleware;

use Closure;
use Illuminate\Http\Request;

class APIGuestMiddleware
{
    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure(\Illuminate\Http\Request): (\Illuminate\Http\Response|\Illuminate\Http\RedirectResponse)  $next
     * @return \Illuminate\Http\Response|\Illuminate\Http\RedirectResponse
     */
    public function handle(Request $request, Closure $next)
    {
        if($request->header('Authorization') && app('auth')->guard('api')){
            $request->merge(['user'=>auth('api')->user()]);
            return $next($request);
        }elseif($request->guest_id){
            return $next($request);
        }

        return response()->json(['Unauthorized', 401]);
    }
}