feat : coupon

app/Service/Api/Order/BaseOrderService.php

@@ -12,6 +12,8 @@ namespace App\Service\Api\Order;
 
 use App\Cache\Redis\Common\ConfigCache;
 use App\Cache\Redis\RedisCache;
+use App\Model\CouponTemplate;
+use App\Model\UserCoupon;
 use App\Service\Api\BaseService;
 use App\Service\ServiceTrait\Api\OrderTrait;
 use App\Service\ServiceTrait\Common\CycleTrait;
@@ -50,6 +52,18 @@ abstract class BaseOrderService extends BaseService
     #[Inject]
     protected ConfigCache $configCache;
 
+    /**
+     * @var UserCoupon
+     */
+    #[Inject]
+    protected UserCoupon $userCouponModel;
+
+    /**
+     * @var CouponTemplate
+     */
+    #[Inject]
+    protected CouponTemplate $couponTemplateModel;
+
     /**
      * @var array
      */

app/Service/Api/Order/ConfirmationOrderService.php

@@ -10,6 +10,7 @@ declare(strict_types=1);
 
 namespace App\Service\Api\Order;
 
+use App\Constants\Common\CouponCode;
 use Psr\Container\ContainerExceptionInterface;
 use Psr\Container\NotFoundExceptionInterface;
 
@@ -36,6 +37,52 @@ class ConfirmationOrderService extends BaseOrderService
 
         $this->compute();
 
+        $this->autoSelectCoupon();
+
         return $this->return->success('success',$this->orderRes);
     }
+
+    private function autoSelectCoupon(): void
+    {
+        if ($this->couponId != 0) return;
+
+        $noUseCoupon = $this->couponTemplateModel->getNoUseCouponByUserId($this->userId);
+
+        if ($noUseCoupon->isEmpty()) return;
+
+        $noUseCoupon = $noUseCoupon->toArray();
+
+        $orderMaxPrice = max(array_column($this->orderRes['good'],'price'));
+        $maxValidityEndTimeDate = max(array_column($noUseCoupon,'validity_end_time'));
+
+        $filtered = array_filter($noUseCoupon, function($item) use($maxValidityEndTimeDate) {
+            return $item['validity_end_time'] === $maxValidityEndTimeDate;
+        });
+
+        $selectMaxPrice = 0;
+        $selectCouponInfo = [];
+        foreach ($filtered as &$value) {
+            $value['amount'] = match ($value['coupon_type']) {
+                CouponCode::COUPON_TYPE_INSTANT_REDUCTION => $value['amount'],
+                CouponCode::COUPON_TYPE_DISCOUNT => $value['amount'] * $orderMaxPrice,
+                default => 0
+            };
+
+            if ($value['amount'] < $selectMaxPrice) continue;
+
+            $selectMaxPrice = $value['amount'];
+            $selectCouponInfo = $value;
+        }
+
+        $this->couponId = $selectCouponInfo['id'];
+        $this->orderRes['coupon'] = $selectCouponInfo;
+        $this->orderRes['coupon_id'] = $selectCouponInfo['id'];
+
+        $this->reloadCompute();
+    }
+
+    private function reloadCompute(): void
+    {
+
+    }
 }