fix: add error for email verification

account/account.go

@@ -134,6 +134,10 @@ func (s AccountServiceDefault) SendEmailVerification(userId uint) error {
 		return err
 	}
 
+	if user.Verified {
+		return NewAccountError(ErrKeyAccountAlreadyVerified, nil)
+	}
+
 	token := GenerateSecurityToken()
 
 	var verification models.EmailVerification
@@ -198,7 +202,7 @@ func (s AccountServiceDefault) VerifyEmail(email string, token string) error {
 
 	if result.Error != nil {
 		if errors.Is(result.Error, gorm.ErrRecordNotFound) {
-			return NewAccountError(ErrKeyUserNotFound, result.Error)
+			return NewAccountError(ErrKeyEmailVerificationFailed, result.Error)
 		}
 
 		return NewAccountError(ErrKeyDatabaseOperationFailed, result.Error)

account/errors.go

@@ -26,6 +26,8 @@ const (
 
 	// Account update errors
 	ErrKeyAccountUpdateFailed     = "ErrAccountUpdateFailed"
+	ErrKeyAccountAlreadyVerified  = "ErrAccountAlreadyVerified"
+	ErrKeyEmailVerificationFailed = "ErrEmailVerificationFailed"
 
 	// JWT generation errors
 	ErrKeyJWTGenerationFailed = "ErrJWTGenerationFailed"
@@ -73,6 +75,8 @@ var defaultErrorMessages = map[string]string{
 
 	// Account update errors
 	ErrKeyAccountUpdateFailed:     "Failed to update account information.",
+	ErrKeyAccountAlreadyVerified:  "Account is already verified.",
+	ErrKeyEmailVerificationFailed: "Failed to verify email address.",
 
 	// JWT generation errors
 	ErrKeyJWTGenerationFailed: "Failed to generate a new JWT token.",
@@ -119,6 +123,8 @@ var (
 
 		// Account update errors
 		ErrKeyAccountUpdateFailed:     http.StatusInternalServerError,
+		ErrKeyAccountAlreadyVerified:  http.StatusConflict,
+		ErrKeyEmailVerificationFailed: http.StatusInternalServerError,
 
 		// JWT generation errors
 		ErrKeyJWTGenerationFailed: http.StatusInternalServerError,