/// <summary>
/// Checks the settings file for required settings.
/// If not all required settings are present, a backup is made, valid settings are moved over, and an automated resolution is attempted.
/// In an event of only one required setting missing with one setting in the file unrecognized, the two settings are considered related and the situation is resolved.
/// Otherwise direct intervention is necessary to move unrecognized settings over to the newly generated file.
/// </summary>
private void ValidateFileSettings()
{
var missingSettingNames = _requiredSettingNames.Except(_settings.Keys);
var recognizedSettingNames = _requiredSettingNames.Intersect(_settings.Keys);
var unrecognizedSettingNames = _settings.Keys.Except(recognizedSettingNames);
if (missingSettingNames.Any())
{
_fileManager.BackUpFile(_settingsFile);
GenerateSettingsFile();
foreach (var recognizedSettingName in recognizedSettingNames)
{
Save(recognizedSettingName, _settings[recognizedSettingName]);
}
if (missingSettingNames.HasSingle() && unrecognizedSettingNames.HasSingle()) // It is assumed that a setting was renamed.
{
var missingSettingName = missingSettingNames.First();
var unrecognizedSettingName = unrecognizedSettingNames.First();
var settingValue = _settings[unrecognizedSettingName];
Save(missingSettingName, settingValue);
_settings.Add(missingSettingName, settingValue);
_settings.Remove(unrecognizedSettingName);
SettingsFileStatus = ESettingsFileStatus.FoundAndAutomaticallyUpdated;
}
else
{
SettingsFileStatus = ESettingsFileStatus.FoundAndNeedsManualUpdate;
throw new SettingsFileRegeneratedException();
}
}
else
{
SettingsFileStatus = ESettingsFileStatus.FoundAndUpToDate;
}
}