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<?php

namespace App\Http\Middleware;

use Closure;

use Illuminate\Contracts\Auth\Factory as Auth;

class Authenticate

{

    /**

     * The authentication guard factory instance.

     *

     * @var \Illuminate\Contracts\Auth\Factory

     */

    protected $auth;

    /**

     * Create a new middleware instance.

     *

     * @param  \Illuminate\Contracts\Auth\Factory  $auth

     * @return void

     */

    public function __construct(Auth $auth)

    {

        $this->auth = $auth;

    }

    /**

     * Handle an incoming request.

     *

     * @param  \Illuminate\Http\Request  $request

     * @param  \Closure  $next

     * @param  string|null  $guard

     * @return mixed

     */

    public function handle($request, Closure $next, $guard = null)

    {

        if ($this->auth->guard($guard)->guest()) {

            return response('Unauthorized.', 401);

        }

        return $next($request);

    }

}