update

app/Http/Controllers/CoponController.php

@@ -9,5 +9,21 @@ use App\Models\Coupon;
 class CouponController extends Controller
 {
     public function check (Request $request) {
+        if (empty($request->input('code'))) {
+            abort(500, '参数错误');
+        }
+        $coupon = Coupon::where('code', $request->input('code'))->first();
+        if (!$coupon) {
+            abort(500, '优惠券无效');
+        }
+        if (time() < $coupon->started_at) {
+            abort(500, '优惠券还未到可用时间');
+        }
+        if (time() > $coupon->ended_at) {
+            abort(500, '优惠券已过期');
+        }
+        return response([
+            'data' => $coupon
+        ]);
     }
 }