generic setting update code

internal/models/user.go

@@ -31,7 +31,8 @@ type User struct {
 }
 
 type UserModel struct {
-	DB *sql.DB
+	DB       *sql.DB
+	Settings map[string]Setting
 }
 
 func (m *UserModel) Insert(shortId uint64, username string, email string, password string, settings UserSettings) error {
@@ -187,6 +188,34 @@ func (m *UserModel) initializeUserSettings(userId int64, settings UserSettings)
 	return nil
 }
 
+func (m *UserModel) UpdateUserSettings(userId int64, settings UserSettings) error {
+	err := m.UpdateSetting(userId, m.Settings["local_timezone"], settings.LocalTimezone.String())
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func (m *UserModel) UpdateSetting(userId int64, setting Setting, value string) error {
+	stmt := `UPDATE user_settings SET
+				AllowedSettingValueId=(SELECT Id FROM allowed_setting_values WHERE SettingId = user_settings.SettingId AND ItemValue = ?),
+				UnconstrainedValue=(SELECT ? FROM settings WHERE settings.Id = user_settings.SettingId AND settings.Constrained=0)
+			WHERE userId = ?
+			AND SettingId = (SELECT Id from Settings WHERE Description=?);`
+	result, err := m.DB.Exec(stmt, value, value, userId)
+	if err != nil {
+		return err
+	}
+	rows, err := result.RowsAffected()
+	if err != nil {
+		return err
+	}
+	if rows != 1 {
+		return err
+	}
+	return nil
+}
+
 func (m *UserModel) SetLocalTimezone(userId int64, timezone string) error {
 	valid, err := validateSetting(m.DB, u_timezone, timezone)
 	if err != nil {