add new function to change passsword with test

db_test.go

@@ -185,11 +185,15 @@ func TestLoginAndAuthorization(t *testing.T) {
 	auth.GET("", func(ctx *gin.Context) {
 		ctx.JSON(http.StatusOK, "ok")
 	})
+	auth2 := middleware.Group("", aH.AuthorizeRole("/login/change", "password"))
+
+	auth2.POST("/login/change/password", aH.ChangePassword)
 
 	// ---- Step 1: Perform login ----
 	user := models.User{
-		Name:     "guest",
-		Password: "passwordd1",
+		Name:        "guest",
+		Password:    "passwordd1",
+		NewPassword: "Newpasswordd1",
 	}
 	jsonBody, _ := json.Marshal(user)
 
@@ -218,22 +222,40 @@ func TestLoginAndAuthorization(t *testing.T) {
 	}
 
 	type request struct {
-		Name   string
-		Method string
-		Path   string
-		Cookie *http.Cookie
+		Name        string
+		Method      string
+		Path        string
+		Payload     any
+		Cookie      *http.Cookie
+		ignoreError bool
 	}
 	var requests []request
 
+	user.Id = 2
+
+	correctUser := user
+	correctUser.Password = user.NewPassword
+
 	requests = append(requests,
 		request{Name: "Refresh", Method: "POST", Path: "/login/refresh", Cookie: refreshCookie},
 		request{Name: "Me", Method: "GET", Path: "/login/me", Cookie: accessCookie},
 		request{Name: "Authorization", Method: "GET", Path: "/members", Cookie: accessCookie},
+		request{Name: "Change Password", Method: "POST", Path: "/login/change/password", Cookie: accessCookie, Payload: user},
 		request{Name: "Logout", Method: "GET", Path: "/logout", Cookie: refreshCookie},
+		request{Name: "New wrong login", Method: "POST", Path: "/login", Payload: user, ignoreError: true},
+		request{Name: "New login", Method: "POST", Path: "/login", Payload: correctUser},
 	)
 
 	for _, request := range requests {
-		req, _ := http.NewRequest(request.Method, request.Path, nil)
+		var body io.Reader
+		if request.Payload != nil {
+			jsonBytes, err := json.Marshal(request.Payload)
+			if err != nil {
+				t.Fatal(err)
+			}
+			body = bytes.NewBuffer(jsonBytes)
+		}
+		req, _ := http.NewRequest(request.Method, request.Path, body)
 		if request.Cookie != nil {
 			req.AddCookie(request.Cookie) // attach refresh_token cookie
 		}
@@ -242,6 +264,8 @@ func TestLoginAndAuthorization(t *testing.T) {
 		r.ServeHTTP(w, req)
 
 		t.Log(request.Name+" response:", w.Body.String())
-		assert.Equal(t, http.StatusOK, w.Code)
+		if !request.ignoreError {
+			assert.Equal(t, http.StatusOK, w.Code)
+		}
 	}
 }

handlers/user.go

@@ -99,6 +99,54 @@ func (aH *AccessHandler) AddUser(c *gin.Context) {
 	})
 }
 
+func (aH *AccessHandler) ChangePassword(c *gin.Context) {
+	var user models.User
+	err := c.BindJSON(&user)
+	if err != nil {
+		aH.logger.Error("ChangePassword", err)
+		c.JSON(http.StatusInternalServerError, models.NewJsonErrorResponse(err))
+		return
+	}
+
+	// get user to check ChangePassword
+	var dbRecord models.User
+	err = aH.dbHandler.GetById(&dbRecord, user.Id)
+	if err != nil {
+		aH.logger.Error("ChangePassword", err)
+		c.JSON(http.StatusInternalServerError, nil)
+		return
+	}
+
+	// Check if old password is correct
+	if !utils.CheckPassword(user.Password, dbRecord.Password) {
+		fmt.Println(123, dbRecord.Password, user.Password)
+		// Found a user → skip create
+		aH.logger.Error("ChangePassword", "wrong password entered for user: "+user.Name)
+		c.JSON(http.StatusBadRequest, models.NewJsonMessageResponse("invalid credentials"))
+		return
+	}
+	fmt.Println(3)
+
+	// Hash the provided password before saving
+	user.Password, err = utils.HashPassword(user.NewPassword)
+	if err != nil {
+		aH.logger.Error("ChangePassword", err)
+		c.JSON(http.StatusInternalServerError, nil)
+		return
+	}
+	fmt.Println(4)
+
+	aH.logger.Debug("ChangePassword", "change user "+user.Name+" password")
+
+	// Update user
+	aH.dbHandler.UpdateValuesById(&user, user.Id)
+	fmt.Println(5)
+
+	c.JSON(http.StatusOK, gin.H{
+		"message": fmt.Sprintf("password of user '%s' changed", user.Name),
+	})
+}
+
 func (aH *AccessHandler) GetUser(c *gin.Context) {
 	var i int
 	var err error