private void DeleteOldFile(FilesToDelete filesToDelete, string oldFilename)
{
if (!oldFilename.IsEmptyOrNull())
{
var actualOldFile = (attr.SubFolder.IsEmptyOrNull() ? "" : (attr.SubFolder + "/")) + oldFilename;
filesToDelete.RegisterOldFile(actualOldFile);
if (attr.CopyToHistory)
{
var oldFilePath = UploadHelper.ToPath(actualOldFile);
string date = DateTime.UtcNow.ToString("yyyyMM", Invariants.DateTimeFormat);
string historyFile = "history/" + date + "/" + Path.GetFileName(oldFilePath);
if (File.Exists(UploadHelper.DbFilePath(oldFilePath)))
{
UploadHelper.CopyFileAndRelated(UploadHelper.DbFilePath(oldFilePath), UploadHelper.DbFilePath(historyFile), overwrite: true);
}
}
}
}
public override void OnBeforeSave(ISaveRequestHandler handler)
{
var filesToDelete = new FilesToDelete();
UploadHelper.RegisterFilesToDelete(handler.UnitOfWork, filesToDelete);
handler.StateBag[this.GetType().FullName + "_" + Target.Name + "_FilesToDelete"] = filesToDelete;
var filename = (StringField)(Target);
var oldFilename = handler.IsCreate ? null : filename[handler.Old];
var newFilename = filename[handler.Row] = filename[handler.Row].TrimToNull();
if (oldFilename.IsTrimmedSame(newFilename))
{
filename[handler.Row] = oldFilename;
return;
}
if (!oldFilename.IsEmptyOrNull())
{
var actualOldFile = (attr.SubFolder.IsEmptyOrNull() ? "" : (attr.SubFolder + "/")) + oldFilename;
filesToDelete.RegisterOldFile(actualOldFile);
if (attr.CopyToHistory)
{
var oldFilePath = UploadHelper.ToPath(actualOldFile);
string date = DateTime.UtcNow.ToString("yyyyMM", Invariants.DateTimeFormat);
string historyFile = "history/" + date + "/" + Path.GetFileName(oldFilePath);
if (File.Exists(UploadHelper.DbFilePath(oldFilePath)))
{
UploadHelper.CopyFileAndRelated(UploadHelper.DbFilePath(oldFilePath), UploadHelper.DbFilePath(historyFile), overwrite: true);
}
}
}
if (newFilename == null)
{
if (oldFilename.IsTrimmedEmpty())
{
return;
}
filename[handler.Row] = null;
if (!ReferenceEquals(null, originalNameField))
{
originalNameField[handler.Row] = null;
}
return;
}
if (!newFilename.ToLowerInvariant().StartsWith("temporary/"))
{
throw new InvalidOperationException("For security reasons, only temporary files can be used in uploads!");
}
if (!ReferenceEquals(null, originalNameField))
{
var originalName = File.ReadAllText(Path.ChangeExtension(
UploadHelper.DbFilePath(newFilename), ".orig")).TrimToNull();
originalNameField[handler.Row] = originalName;
}
if (handler.IsUpdate)
{
var copyResult = CopyTemporaryFile(handler, filesToDelete);
filename[handler.Row] = copyResult.DbFileName;
}
}