feat(usecase) : add delete user

api/handler/user.go

@@ -99,6 +99,28 @@ func getUser(service user.UseCase) http.Handler {
 	})
 }
 
+func deleteUser(service user.UseCase) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		errorMessage := "Error removing user"
+		vars := mux.Vars(r)
+		id, err := entity.StringToID(vars["id"])
+
+		if err != nil {
+			w.WriteHeader(http.StatusInternalServerError)
+			w.Write([]byte(errorMessage))
+			return
+		}
+
+		err = service.DeleteUser(id)
+
+		if err != nil {
+			w.WriteHeader(http.StatusInternalServerError)
+			w.Write([]byte(errorMessage))
+			return
+		}
+	})
+}
+
 //MakeUserHandlers make url handlers
 func MakeUserHandlers(r *mux.Router, n negroni.Negroni, service user.UseCase) {
 	r.Handle("/v1/user", n.With(
@@ -108,4 +130,8 @@ func MakeUserHandlers(r *mux.Router, n negroni.Negroni, service user.UseCase) {
 	r.Handle("/v1/user/{id}", n.With(
 		negroni.Wrap(getUser(service)),
 	)).Methods("GET", "OPTIONS")
+
+	r.Handle("/v1/user/{id}", n.With(
+		negroni.Wrap(deleteUser(service)),
+	)).Methods("DELETE", "OPTIONS")
 }

infrastructure/repository/user_postgres.go

@@ -67,3 +67,22 @@ func getUser(id entity.ID, db *sql.DB) (*entity.User, error) {
 
 	return &user, nil
 }
+
+//Delete an user
+func (r *UserPostgres) Delete(id entity.ID) error {
+	stmt, err := r.db.Prepare(`DELETE FROM users WHERE id = $1`)
+
+	if err != nil {
+		return err
+	}
+
+	defer stmt.Close()
+
+	_, err = stmt.Exec(id)
+
+	if err != nil {
+		return err
+	}
+
+	return nil
+}

usecase/user/delete_user.go

@@ -0,0 +1,22 @@
+package user
+
+import (
+	"errors"
+
+	"github.com/praiakov/godin/entity"
+)
+
+//DeleteUser Delete an user
+func (s *Service) DeleteUser(id entity.ID) error {
+	u, err := s.GetUser(id)
+
+	if u == nil {
+		return errors.New("Not found")
+	}
+
+	if err != nil {
+		return err
+	}
+
+	return s.repo.Delete(id)
+}

usecase/user/interface.go

@@ -7,6 +7,7 @@ import (
 //Writer user writer
 type Writer interface {
 	Create(e *entity.User) (entity.ID, error)
+	Delete(id entity.ID) error
 }
 
 //Reader interface
@@ -24,4 +25,5 @@ type Repository interface {
 type UseCase interface {
 	CreateUser(name, email string, totalMonth int) (entity.ID, error)
 	GetUser(id entity.ID) (*entity.User, error)
+	DeleteUser(id entity.ID) error
 }