first commit

apps/sentinel/internal/logic/userproduct/createuserproductlogic.go

@@ -0,0 +1,54 @@
+package userproductlogic
+
+import (
+	"context"
+	"errors"
+	"tianyuan-api/apps/sentinel/internal/model"
+
+	"tianyuan-api/apps/sentinel/internal/svc"
+	"tianyuan-api/apps/sentinel/sentinel"
+
+	"github.com/zeromicro/go-zero/core/logx"
+)
+
+type CreateUserProductLogic struct {
+	ctx    context.Context
+	svcCtx *svc.ServiceContext
+	logx.Logger
+}
+
+func NewCreateUserProductLogic(ctx context.Context, svcCtx *svc.ServiceContext) *CreateUserProductLogic {
+	return &CreateUserProductLogic{
+		ctx:    ctx,
+		svcCtx: svcCtx,
+		Logger: logx.WithContext(ctx),
+	}
+}
+
+// UserProduct methods
+func (l *CreateUserProductLogic) CreateUserProduct(in *sentinel.CreateUserProductRequest) (*sentinel.UserProductEmptyResponse, error) {
+	isExist, err := l.IsUserProductAssociated(l.ctx, in.UserId, in.ProductId)
+	if err != nil {
+		return nil, err
+	}
+	if isExist {
+		return nil, errors.New("该产品已定阅读，无法重复订阅")
+	}
+	_, err = l.svcCtx.UserProductsModel.Insert(l.ctx, &model.UserProducts{UserId: in.UserId, ProductId: in.ProductId})
+	if err != nil {
+		return nil, err
+	}
+
+	return &sentinel.UserProductEmptyResponse{}, nil
+}
+func (l *CreateUserProductLogic) IsUserProductAssociated(ctx context.Context, userId, productId int64) (bool, error) {
+	_, err := l.svcCtx.UserProductsModel.FindOneUserProduct(ctx, userId, productId)
+	if err != nil {
+		if err == model.ErrNotFound {
+			return false, nil
+		}
+		return false, err
+	}
+
+	return true, nil
+}