app/Http/Controllers/API/SubscriptionController.php
public function getCouponForUser()
    {
        Stripe::setApiKey(config('services.stripe.secret'));

        if (count(Spark::plans()) === 0) {
            abort(404);
        }

        try {
            $customer = StripeCustomer::retrieve(Auth::user()->stripe_id);

            if ($customer->discount) {
                return response()->json(
                    Coupon::fromStripeCoupon(
                        StripeCoupon::retrieve($customer->discount->coupon->id)
                    )
                );
            } else {
                abort(404);
            }
        } catch (Exception $e) {
            abort(404);
        }
    }
public function getCouponForUser()
    {
        Stripe::setApiKey(config('services.stripe.secret'));

        if (count(Spark::plans()) === 0) {
            abort(404);
        }

        try {
            $customer = StripeCustomer::retrieve(Auth::user()->stripe_id);

            if ($customer->discount) {
                return response()->json(
                    Coupon::fromStripeCoupon(
                        StripeCoupon::retrieve($customer->discount->coupon->id)
                    )
                );
            } else {
                abort(404);
            }
        } catch (Exception $e) {
            abort(404);
        }
    }
Get the current coupon for the authenticated user.

Used to display current discount on settings -> subscription tab.

@return \Illuminate\Http\Response