feat : coupon

app/Model/CouponTemplate.php

@@ -4,6 +4,8 @@ declare(strict_types=1);
 
 namespace App\Model;
 
+use App\Constants\Common\CouponCode;
+use Hyperf\Collection\Collection;
 use Hyperf\DbConnection\Model\Model;
 
 /**
@@ -68,4 +70,32 @@ class CouponTemplate extends Model
 
         return $res;
     }
+
+    /**
+     * @param int $userId
+     * @return Collection
+     */
+    public function getNoUseCouponByUserId(int $userId): Collection
+    {
+        return $this
+            ->join('user_coupon', function ($join) use ($userId) {
+                $join->on('user_coupon.coupon_template_id', '=', 'coupon_template.id')
+                    ->where('user_coupon.user_id', '=', $userId)
+                    ->where('user_coupon.status', '=', CouponCode::COUPON_STATUS_UNUSED)
+                    ->where('validity_start_time', '<=', date('Y-m-d H:i:s'))
+                    ->where('validity_end_time', '>=', date('Y-m-d H:i:s'))
+                    ->select([
+                        'coupon_template.coupon_type',
+                        'coupon_template.amount',
+                        'coupon_template.ratio',
+                        'user_coupon.id',
+                        'user_coupon.coupon_template_id',
+                        'user_coupon.coupon_name',
+                        'user_coupon.status',
+                        'user_coupon.validity_start_time',
+                        'user_coupon.validity_end_time',
+                    ]);
+            })
+            ->get();
+    }
 }

app/Model/UserCoupon.php

@@ -4,6 +4,9 @@ declare(strict_types=1);
 
 namespace App\Model;
 
+use App\Constants\Common\CouponCode;
+use Hyperf\Database\Model\Builder;
+use Hyperf\Database\Model\Collection;
 use Hyperf\DbConnection\Model\Model;
 
 /**
@@ -48,4 +51,16 @@ class UserCoupon extends Model
             ->pluck('coupon_id')
             ->toArray();
     }
+
+    /**
+     * @param int $userId
+     * @return Builder[]|Collection
+     */
+    public function getNoUseCouponByUserId(int $userId): Collection|array
+    {
+        return $this
+            ->where('user_id', $userId)
+            ->where('status', CouponCode::COUPON_STATUS_UNUSED)
+            ->get();
+    }
 }

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
+    {
+
+    }
 }