Affiliate Tracker Middleware

TrackAffiliates.php

<?php namespace App\Http\Middleware;
use App\Affiliate;
use App\Referral;
use Closure;
use Cookie;
class TrackAffiliates
{
	/**
	 * Run the request filter.
	 *
	 * @param  \Illuminate\Http\Request  $request
	 * @param  \Closure  $next
	 * @return mixed
	 */
	public function handle($request, Closure $next)
	{
		$response = $next($request);

		if($request->has('affiliate')) {
			$response->withCookie(cookie('affiliate', $request->get('affiliate'), 10080));
		}

		if(request()->user() && $request->hasCookie('affiliate')){

			$affiliate_tracking_id = request()->cookie('affiliate');

			if(Affiliate::where('tracking_id',$affiliate_tracking_id)->exists()){


				$affiliate = Affiliate::where('tracking_id',$affiliate_tracking_id)->first();

				$referral = $affiliate->referrals()->firstOrCreate(array(
					'user_id'=>request()->user()->id
				));

				$stats = (object) array();
				$stats->url = request()->fullUrl();
				$stats->ip = request()->ips();
				$stats->user_agent = request()->userAgent();

				$referral->request = $stats;

				$referral->save();
				$response->withCookie(Cookie::forget('affiliate'));
			}
		}

		return $response;
	}

}