Feat: vas for group / storage pack

pkg/payment/score.go

@@ -0,0 +1,44 @@
+package payment
+
+import (
+	model "github.com/HFO4/cloudreve/models"
+	"github.com/HFO4/cloudreve/pkg/serializer"
+)
+
+// ScorePayment 积分支付处理
+type ScorePayment struct {
+}
+
+// Create 创建新订单
+func (pay *ScorePayment) Create(order *model.Order, pack *serializer.PackProduct, group *serializer.GroupProducts, user *model.User) (*OrderCreateRes, error) {
+	if pack != nil {
+		order.Price = pack.Score
+	} else {
+		order.Price = group.Score
+	}
+
+	// 检查此订单是否可用积分支付
+	if order.Price == 0 {
+		return nil, ErrUnsupportedPaymentMethod
+	}
+
+	// 扣除用户积分
+	if !user.PayScore(order.Price * order.Num) {
+		return nil, ErrScoreNotEnough
+	}
+
+	// 商品“发货”
+	if err := GiveProduct(user, pack, group, order.Num); err != nil {
+		user.AddScore(order.Price * order.Num)
+		return nil, err
+	}
+
+	// 创建订单记录
+	if _, err := order.Create(); err != nil {
+		return nil, ErrInsertOrder.WithError(err)
+	}
+
+	return &OrderCreateRes{
+		Payment: false,
+	}, nil
+}