protected virtual void HandleRecovery(JsonSettings sender, RecoveryAction action, ref bool recovered, ref bool handled)
{
//versions mismatch, handle
if (recovered || handled)
{
return;
}
switch (action)
{
case RecoveryAction.Throw: throw new JsonSettingsRecoveryException($"Loading {sender._childtype.Name} settings{(sender is IVersionable v ? $" version '{v.Version}'" : "")}");
case RecoveryAction.RenameAndLoadDefault: {
if (loadedPath == null)
{
throw new ArgumentNullException(nameof(loadedPath));
}
//parse current name
var versionMatch = VersioningModule.VersionMatcher.Match(loadedPath);
int fileVersion = versionMatch.Success ? int.Parse(versionMatch.Groups[2].Value) + 1 : 0;
var cleanName = loadedPath;
if (!string.IsNullOrEmpty(versionMatch.Groups[0].Value))
{
cleanName = cleanName.Replace(versionMatch.Groups[0].Value, "");
}
var lastIdx = cleanName.LastIndexOf('.');
if (lastIdx == -1)
{
lastIdx = loadedPath.Length;
}
uint nonVersionable = 0;
//figure naming of existing and rename
string newFileName = cleanName;
if (File.Exists(newFileName))
{
do
{
newFileName = cleanName.Insert(lastIdx, $".{(sender is IVersionable versionable ? versionable.Version : "")}{(fileVersion++ == 0 ? "" : $"-{fileVersion}")}");
} while (File.Exists(newFileName));
try {
File.Move(cleanName, newFileName);
} catch (Exception) {
// swallow
try {
File.Delete(loadedPath);
} catch (Exception) {
// swallow
}
}
}
//save
internalCalls++;
try {
sender.FileName = loadedPath = cleanName;
sender.LoadDefault(ConstructingParameters);
sender.Save();
recovered = true;
handled = true;
} finally {
internalCalls--;
}
return;
}
case RecoveryAction.LoadDefault:
sender.LoadDefault(ConstructingParameters);
recovered = true;
handled = true;
return;
case RecoveryAction.LoadDefaultAndSave:
sender.LoadDefault(ConstructingParameters);
sender.Save();
recovered = true;
handled = true;
return;
default: throw new ArgumentOutOfRangeException();
}
}