Use Google account display name and avatar only if user does not have these alreay.

			return "", "", false, status.Error(codes.Unauthenticated, "Error finding or creating user account.")

		}

		// Check if the display name or avatar received from Google are different from those in the DB.

		if (displayName != "" && dbDisplayName.String != displayName) || (avatarUrl != "" && dbAvatarUrl.String != avatarUrl) {

			// At least one difference found, update the DB to reflect changes.

		// Check if the display name or avatar received from Google have values but the DB does not.

		if (dbDisplayName.String == "" && displayName != "") || (dbAvatarUrl.String == "" && avatarUrl != "") {

			// At least one valid change found, update the DB to reflect changes.

			params := make([]interface{}, 0, 3)

			params = append(params, dbUserID)

			// Ensure only changed values are applied.

			statements := make([]string, 0, 2)

			if displayName != "" && dbDisplayName.String != displayName {

			if dbDisplayName.String == "" && displayName != "" {

				params = append(params, displayName)

				statements = append(statements, "display_name = $"+strconv.Itoa(len(params)))

			}

			if avatarUrl != "" && dbAvatarUrl.String != avatarUrl {

			if dbAvatarUrl.String == "" && avatarUrl != "" {

				params = append(params, avatarUrl)

				statements = append(statements, "avatar_url = $"+strconv.Itoa(len(params)))

			}

			if len(statements) > 0 {

				if _, err = db.ExecContext(ctx, "UPDATE users SET "+strings.Join(statements, ", ")+", update_time = now() WHERE id = $1", params...); err != nil {

					// Failure to update does not interrupt the execution. Just log the error and continue.

					logger.Error("Error in updating google profile details", zap.Error(err), zap.String("googleId", googleProfile.Sub), zap.String("display_name", googleProfile.Name), zap.String("display_name", googleProfile.Picture))

				}

			}

		}

		return dbUserID, dbUsername, false, nil

	}