/// <inheritdoc/>
public void DeleteBackups(FileInfo file)
{
var soft = file.GetSoftDeleteFileFor();
if (soft != null)
{
soft.Delete();
}
var allBackups = BackupFile.GetAllBackupsFor(file, Setting);
foreach (var backup in allBackups)
{
if (backup.File != null)
{
backup.File.Delete();
}
}
}
/// <inheritdoc/>
public virtual void AfterSuccessfulSave(FileInfo file)
{
Ensure.NotNull(file, nameof(file));
Ensure.ExtensionIsNotAnyOf(file, BackupExtensions, "file");
file.DeleteSoftDeleteFileFor();
var allBackups = BackupFile.GetAllBackupsFor(file, Setting);
if (allBackups.Count == 0)
{
return;
}
foreach (var backup in allBackups)
{
backup.File.DeleteSoftDeleteFileFor();
}
if (Setting.NumberOfBackups > 0)
{
while (allBackups.Count > Setting.NumberOfBackups) // this is not efficient but the number of backups should be low
{
var backupFile = allBackups.MinBy(x => x.TimeStamp);
backupFile.File.HardDelete();
allBackups.Remove(backupFile);
}
}
if (Setting.MaxAgeInDays > 0 && Setting.MaxAgeInDays < Int32.MaxValue)
{
while (true) // this is not efficient but the number of backups should be low
{
var backupFile = allBackups.MinBy(x => x.TimeStamp);
var days = (DateTime.Now - backupFile.TimeStamp).Days;
if (days < Setting.MaxAgeInDays)
{
break;
}
backupFile.File.HardDelete();
allBackups.Remove(backupFile);
}
}
}
/// <inheritdoc/>
public virtual bool BeforeSave(FileInfo file)
{
Ensure.NotNull(file, nameof(file));
Ensure.ExtensionIsNotAnyOf(file, BackupExtensions, "file");
file.Refresh();
if (!file.Exists)
{
return(false);
}
if (!Setting.IsCreatingBackups)
{
var softDelete = file.SoftDelete();
return(softDelete != null);
}
var backupFile = BackupFile.CreateFor(file, Setting);
Backup(file, backupFile);
return(true);
}
/// <inheritdoc/>
internal virtual void Restore(FileInfo file)
{
Ensure.NotNull(file, nameof(file));
Ensure.ExtensionIsNotAnyOf(file, BackupExtensions, "file");
var softDelete = file.WithAppendedExtension(FileHelper.SoftDeleteExtension);
if (softDelete.Exists)
{
Restore(file, softDelete);
return;
}
var backup = BackupFile.GetRestoreFileFor(file, Setting);
if (backup != null)
{
Restore(file, backup);
}
}