improved error handling

frontend/src/lib/locales/de.js

@@ -61,7 +61,9 @@ export default {
 				'Verdammt, Fehler auf unserer Seite, probieren Sie es nochmal, danach rufen Sie jemanden vom Verein an.',
 			not_possible: 'Vorgang nicht möglich.',
 			not_found: 'Konnte nicht gefunden werden.',
-			in_use: 'Ist in Benutzung'
+			in_use: 'Ist in Benutzung',
+			undelivered_verification_mail:
+				'Registrierung erfolgreicht, leider konnte die Verifizierungs-E-Mail nicht versendet werden. Bitte wenden Sie sich an den Verein um Ihre Emailadresse zu bestätigen und Ihren Account zu aktivieren.'
 		},
 		validation: {
 			invalid_user_id: 'Nutzer ID ungültig',

go-backend/internal/constants/constants.go

@@ -16,18 +16,6 @@ const (
 	MailContactSubject        = "Jemand hat das Kontaktformular gefunden"
 )
 
-var Roles = struct {
-	Member int8
-	Viewer int8
-	Editor int8
-	Admin  int8
-}{
-	Member: 0,
-	Viewer: 1,
-	Editor: 4,
-	Admin:  8,
-}
-
 var Licences = struct {
 	AM  string
 	A1  string
@@ -78,10 +66,22 @@ var Priviliges = struct {
 	Update int8
 	Delete int8
 }{
-	View:   0,
+	View:   1,
-	Update: 10,
+	Update: 4,
-	Create: 20,
+	Create: 4,
-	Delete: 30,
+	Delete: 4,
+}
+
+var Roles = struct {
+	Member int8
+	Viewer int8
+	Editor int8
+	Admin  int8
+}{
+	Member: 0,
+	Viewer: 1,
+	Editor: 4,
+	Admin:  8,
 }
 
 var MemberUpdateFields = map[string]bool{

go-backend/internal/controllers/user_controller.go

@@ -35,7 +35,7 @@ type RegistrationData struct {
 func (uc *UserController) CurrentUserHandler(c *gin.Context) {
 	requestUser, err := uc.ExtractUserFromContext(c)
 	if err != nil {
-		utils.RespondWithError(c, err, "Error extracting user from context in CurrentUserHandler", http.StatusBadRequest, "general", "server.error.internal_server_error")
+		utils.RespondWithError(c, err, "Error extracting user from context in CurrentUserHandler", http.StatusBadRequest, errors.Responses.Fields.User, errors.Responses.Keys.NoAuthToken)
 		return
 	}
 
@@ -48,17 +48,17 @@ func (uc *UserController) GetAllUsers(c *gin.Context) {
 
 	requestUser, err := uc.ExtractUserFromContext(c)
 	if err != nil {
-		utils.RespondWithError(c, err, "Error extracting user from context in UpdateHandler", http.StatusBadRequest, "general", "server.validation.no_auth_tokenw")
+		utils.RespondWithError(c, err, "Error extracting user from context in UpdateHandler", http.StatusBadRequest, errors.Responses.Fields.User, errors.Responses.Keys.NoAuthToken)
 		return
 	}
-	if requestUser.RoleID == constants.Roles.Member {
+	if utils.HasPrivilige(requestUser, constants.Priviliges.View) {
-		utils.RespondWithError(c, errors.ErrNotAuthorized, "Not allowed to update user", http.StatusForbidden, "user.user", "server.error.unauthorized")
+		utils.RespondWithError(c, errors.ErrNotAuthorized, "Not allowed to update user", http.StatusForbidden, errors.Responses.Fields.User, errors.Responses.Keys.Unauthorized)
 		return
 	}
 
 	users, err := uc.Service.GetUsers(nil)
 	if err != nil {
-		utils.RespondWithError(c, err, "Error getting users in GetAllUsers", http.StatusInternalServerError, "user.user", "server.error.internal_server_error")
+		utils.RespondWithError(c, err, "Error getting users in GetAllUsers", http.StatusInternalServerError, errors.Responses.Fields.User, errors.Responses.Keys.InternalServerError)
 		return
 	}
 
@@ -78,7 +78,7 @@ func (uc *UserController) UpdateHandler(c *gin.Context) {
 	// 1. Extract and validate the user ID from the route
 	requestUser, err := uc.ExtractUserFromContext(c)
 	if err != nil {
-		utils.RespondWithError(c, err, "Error extracting user from context in UpdateHandler", http.StatusBadRequest, "general", "server.validation.no_auth_tokenw")
+		utils.RespondWithError(c, err, "Error extracting user from context in UpdateHandler", http.StatusBadRequest, errors.Responses.Fields.User, errors.Responses.Keys.NoAuthToken)
 		return
 	}
 
@@ -91,12 +91,12 @@ func (uc *UserController) UpdateHandler(c *gin.Context) {
 	user = updateData.User
 
 	if !utils.HasPrivilige(requestUser, constants.Priviliges.Update) && user.ID != requestUser.ID {
-		utils.RespondWithError(c, errors.ErrNotAuthorized, "Not allowed to update user", http.StatusUnauthorized, "user.user", "server.error.unauthorized")
+		utils.RespondWithError(c, errors.ErrNotAuthorized, "Not allowed to update user", http.StatusForbidden, errors.Responses.Fields.User, errors.Responses.Keys.Unauthorized)
 		return
 	}
 	existingUser, err := uc.Service.GetUserByID(user.ID)
 	if err != nil {
-		utils.RespondWithError(c, err, "Error finding an existing user", http.StatusNotFound, "user.user", "server.error.not_found")
+		utils.RespondWithError(c, err, "Error finding an existing user", http.StatusNotFound, errors.Responses.Fields.User, errors.Responses.Keys.NotFound)
 		return
 	}
 	// user.Membership.ID = existingUser.Membership.ID
@@ -113,10 +113,10 @@ func (uc *UserController) UpdateHandler(c *gin.Context) {
 		existingUser.Password = ""
 		if err := utils.FilterAllowedStructFields(&user, existingUser, constants.MemberUpdateFields, ""); err != nil {
 			if err.Error() == "Not authorized" {
-				utils.RespondWithError(c, errors.ErrNotAuthorized, "Trying to update unauthorized fields", http.StatusUnauthorized, "user.user", "server.error.unauthorized")
+				utils.RespondWithError(c, errors.ErrNotAuthorized, "Trying to update unauthorized fields", http.StatusUnauthorized, errors.Responses.Fields.User, errors.Responses.Keys.Unauthorized)
-				return
+			} else {
+				utils.RespondWithError(c, err, "Error filtering users input fields", http.StatusInternalServerError, errors.Responses.Fields.User, errors.Responses.Keys.InternalServerError)
 			}
-			utils.RespondWithError(c, err, "Error filtering users input fields", http.StatusInternalServerError, "user.user", "server.error.internal_server_error")
 			return
 		}
 	}
@@ -136,7 +136,7 @@ func (uc *UserController) DeleteUser(c *gin.Context) {
 
 	requestUser, err := uc.ExtractUserFromContext(c)
 	if err != nil {
-		utils.RespondWithError(c, err, "Error extracting user from context in DeleteUser", http.StatusBadRequest, "general", "server.validation.no_auth_tokenw")
+		utils.RespondWithError(c, err, "Error extracting user from context in DeleteUser", http.StatusBadRequest, errors.Responses.Fields.User, errors.Responses.Keys.NoAuthToken)
 		return
 	}
 
@@ -154,13 +154,13 @@ func (uc *UserController) DeleteUser(c *gin.Context) {
 	}
 
 	if !utils.HasPrivilige(requestUser, constants.Priviliges.Delete) && data.User.ID != requestUser.ID {
-		utils.RespondWithError(c, errors.ErrNotAuthorized, "Not allowed to delete user", http.StatusForbidden, "user.user", "server.error.unauthorized")
+		utils.RespondWithError(c, errors.ErrNotAuthorized, "Not allowed to delete user", http.StatusForbidden, errors.Responses.Fields.User, errors.Responses.Keys.Unauthorized)
 		return
 	}
 
 	logger.Error.Printf("Deleting user: %v", data.User)
 	if err := uc.Service.DeleteUser(data.User.LastName, data.User.ID); err != nil {
-		utils.RespondWithError(c, err, "Error during user deletion", http.StatusInternalServerError, "user.user", "server.error.internal_server_error")
+		utils.HandleDeleteUserError(c, err)
 		return
 	}
 
@@ -227,7 +227,7 @@ func (uc *UserController) LoginHandler(c *gin.Context) {
 
 	ok, err := user.PasswordMatches(input.Password)
 	if err != nil {
-		utils.RespondWithError(c, err, "Login Error; password comparisson failed", http.StatusInternalServerError, errors.Responses.Fields.Login, errors.Responses.Keys.InternalServerError)
+		utils.RespondWithError(c, err, "Login Error; password incorrect", http.StatusInternalServerError, errors.Responses.Fields.Login, errors.Responses.Keys.InternalServerError)
 		return
 	}
 	if !ok {
@@ -265,13 +265,13 @@ func (uc *UserController) RegisterUser(c *gin.Context) {
 	logger.Info.Printf("Registering user %v", regData.User.Email)
 	selectedModel, err := uc.MembershipService.GetSubscriptionByName(&regData.User.Membership.SubscriptionModel.Name)
 	if err != nil {
-		utils.RespondWithError(c, err, "Error in Registeruser, couldn't get selected model", http.StatusNotFound, "subscription_model", "server.validation.subscription_model_not_found")
+		utils.RespondWithError(c, err, "Error in Registeruser, couldn't get selected model", http.StatusNotFound, errors.Responses.Fields.SubscriptionModel, errors.Responses.Keys.InvalidSubscriptionModel)
 		return
 	}
 	regData.User.Membership.SubscriptionModel = *selectedModel
 	if selectedModel.RequiredMembershipField != "" {
 		if err := validation.CheckParentMembershipID(regData.User.Membership); err != nil {
-			utils.RespondWithError(c, err, "Error in RegisterUser, couldn't check parent membership id", http.StatusBadRequest, "parent_membership_id", "server.validation.parent_membership_id_not_found")
+			utils.RespondWithError(c, err, "Error in RegisterUser, couldn't check parent membership id", http.StatusBadRequest, errors.Responses.Fields.ParentMemberShipID, errors.Responses.Keys.NotFound)
 			return
 		}
 	}
@@ -280,11 +280,10 @@ func (uc *UserController) RegisterUser(c *gin.Context) {
 	// Register User
 	id, token, err := uc.Service.RegisterUser(&regData.User)
 	if err != nil {
-		logger.Error.Printf("Couldn't register User(%v): %v", regData.User.Email, err)
 		if strings.Contains(err.Error(), "UNIQUE constraint failed: users.email") {
-			utils.RespondWithError(c, err, "Error in RegisterUser, couldn't register user", http.StatusConflict, "email", "server.validation.email_already_exists")
+			utils.RespondWithError(c, err, "Error in RegisterUser, couldn't register user", http.StatusConflict, errors.Responses.Fields.Email, errors.Responses.Keys.Duplicate)
 		} else {
-			utils.RespondWithError(c, err, "Error in RegisterUser, couldn't register user", http.StatusConflict, "general", "server.error.internal_server_error")
+			utils.RespondWithError(c, err, "Error in RegisterUser, couldn't register user", http.StatusConflict, errors.Responses.Fields.General, errors.Responses.Keys.InternalServerError)
 		}
 		return
 	}
@@ -308,15 +307,14 @@ func (uc *UserController) RegisterUser(c *gin.Context) {
 	for _, consent := range consents {
 		_, err = uc.ConsentService.RegisterConsent(&consent)
 		if err != nil {
-			utils.RespondWithError(c, err, "Error in RegisterUser, couldn't register consent", http.StatusInternalServerError, "general", "server.error.internal_server_error")
+			utils.RespondWithError(c, err, "Error in RegisterUser, couldn't register consent", http.StatusInternalServerError, errors.Responses.Fields.General, errors.Responses.Keys.InternalServerError)
 			return
 		}
 	}
 
 	// Send notifications
 	if err := uc.EmailService.SendVerificationEmail(&regData.User, &token); err != nil {
-		logger.Error.Printf("Failed to send email verification email to user(%v): %v", regData.User.Email, err)
+		utils.RespondWithError(c, err, "Error in RegisterUser, couldn't send verification email", http.StatusInternalServerError, errors.Responses.Fields.Email, errors.Responses.Keys.UndeliveredVerificationMail)
-		// Proceed without returning error since user registration is successful
 		// TODO Notify Admin
 	}
 
@@ -342,13 +340,13 @@ func (uc *UserController) VerifyMailHandler(c *gin.Context) {
 
 	verification, err := uc.Service.VerifyUser(&token, &constants.VerificationTypes.Email)
 	if err != nil {
-		utils.HandleVerifyUserError(c, err)
+		c.HTML(http.StatusBadRequest, "verification_error.html", gin.H{"ErrorMessage": "Couldn't verify user"})
 		return
 	}
 
 	user, err := uc.Service.GetUserByID(verification.UserID)
 	if err != nil {
-		utils.RespondWithError(c, err, "Couldn't find user", http.StatusNotFound, errors.Responses.Fields.User, errors.Responses.Keys.UserNotFoundWrongPassword)
+		c.HTML(http.StatusBadRequest, "verification_error.html", gin.H{"ErrorMessage": "Internal server error, couldn't verify user"})
 		return
 	}
 

go-backend/internal/controllers/user_controller_test.go

@@ -640,7 +640,7 @@ func testUpdateUser(t *testing.T, loginCookie http.Cookie, adminCookie http.Cook
 				u.Licence.Number = "B072RRE2I50"
 				u.FirstName = "John Missing ID"
 			},
-			expectedStatus: http.StatusUnauthorized,
+			expectedStatus: http.StatusForbidden,
 			expectedErrors: []map[string]string{
 				{"field": "user.user", "key": "server.error.unauthorized"},
 			},
@@ -692,7 +692,7 @@ func testUpdateUser(t *testing.T, loginCookie http.Cookie, adminCookie http.Cook
 			expectedErrors: []map[string]string{
 				{"field": "user.user", "key": "server.error.unauthorized"},
 			},
-			expectedStatus: http.StatusUnauthorized,
+			expectedStatus: http.StatusForbidden,
 		},
 	}
 	for _, tt := range tests {

go-backend/internal/utils/priviliges.go

@@ -1,25 +1,13 @@
 package utils
 
 import (
-	"GoMembership/internal/constants"
 	"GoMembership/internal/models"
 	"errors"
 	"reflect"
 )
 
 func HasPrivilige(user *models.User, privilige int8) bool {
-	switch privilige {
+	return user.RoleID >= privilige
-	case constants.Priviliges.View:
-		return user.RoleID >= constants.Roles.Viewer
-	case constants.Priviliges.Update:
-		return user.RoleID >= constants.Roles.Editor
-	case constants.Priviliges.Create:
-		return user.RoleID >= constants.Roles.Editor
-	case constants.Priviliges.Delete:
-		return user.RoleID >= constants.Roles.Editor
-	default:
-		return false
-	}
 }
 
 // FilterAllowedStructFields filters allowed fields recursively in a struct and modifies structToModify in place.

go-backend/internal/utils/response_handler.go

@@ -92,3 +92,17 @@ func HandleVerifyUserError(c *gin.Context, err error) {
 		RespondWithError(c, err, "Couldn't verify user", http.StatusInternalServerError, errors.Responses.Fields.General, errors.Responses.Keys.InternalServerError)
 	}
 }
+
+func HandleDeleteUserError(c *gin.Context, err error) {
+	if err.Error() == "record not found" {
+		RespondWithError(c, err, "Couldn't find user", http.StatusNotFound, errors.Responses.Fields.User, errors.Responses.Keys.NotFound)
+	}
+	switch err {
+	case errors.ErrUserNotFound:
+		RespondWithError(c, err, "User not found", http.StatusNotFound, errors.Responses.Fields.User, errors.Responses.Keys.NotFound)
+	case errors.ErrNoData:
+		RespondWithError(c, err, "No data transmitted", http.StatusNotFound, errors.Responses.Fields.User, errors.Responses.Keys.Invalid)
+	default:
+		RespondWithError(c, err, "Couldn't delete user", http.StatusInternalServerError, errors.Responses.Fields.User, errors.Responses.Keys.InternalServerError)
+	}
+}

go-backend/pkg/errors/errors.go

@@ -17,6 +17,7 @@ type ValidationKeys struct {
 	NoAuthToken                 string
 	NotFound                    string
 	InUse                       string
+	UndeliveredVerificationMail string
 }
 
 type ValidationFields struct {
@@ -70,6 +71,7 @@ var Responses = struct {
 		NoAuthToken:                 "server.error.no_auth_token",
 		NotFound:                    "server.error.not_found",
 		InUse:                       "server.error.in_use",
+		UndeliveredVerificationMail: "server.error.undelivered_verification_mail",
 	},
 	Fields: ValidationFields{
 		General:            "general",