refac: remove frontend & clearer DDD

internal/infrastructure/useCases/GetUser.go

@@ -0,0 +1,23 @@
+package useCases
+
+import "RenewCMS/internal/domain/user"
+
+type GetUserUseCase struct {
+	userRepository user.Repository
+}
+
+func NewGetUserUseCase(userRepository user.Repository) *GetUserUseCase {
+	return &GetUserUseCase{userRepository}
+}
+
+func (g *GetUserUseCase) GetUser(id uint32) (user.User, error) {
+	return g.userRepository.Get(id)
+}
+
+func (g *GetUserUseCase) GetUserByUsername(username string) (user.User, error) {
+	return g.userRepository.GetByUsername(username)
+}
+
+func (g *GetUserUseCase) GetUserByEmail(email string) (user.User, error) {
+	return g.userRepository.GetByEmail(email)
+}