public async Task <HandlerResult <PdfFileModel> > Handle(DeletePdfFileCommand request, CancellationToken cancellationToken)
{
IEnumerable <byte> fileCopy = null;
string fileLocation = string.Empty;
try
{
var fileName = request.FileName.Trim();
var fileModel = await _repository.DeleteAsync(fileName);
if (fileModel is null)
{
return(CreateFailureResult($"File record with name '{fileName}' does not exist in the database"));
}
fileLocation = fileModel.Location;
if (!File.Exists(fileLocation))
{
await _repository.SaveAsync();
return(CreateFailureResult($"File '{fileName}' does not exist on the server."));
}
fileCopy = File.ReadAllBytes(fileLocation);
File.Delete(fileModel.Location);
await _repository.SaveAsync();
return(CreateSuccessResult(fileModel));
}
catch (Exception ex)
{
if (
ex is DbException &&
!string.IsNullOrEmpty(fileLocation) &&
!File.Exists(fileLocation) &&
fileCopy != null)
{
File.WriteAllBytes(fileLocation, fileCopy.ToArray());
}
return(CreateFailureResult($"Failed to delete file '{request.FileName}'", ex));
}
}
public async Task <IActionResult> Delete([FromQuery] DeletePdfFileCommand deleteCommand)
{
var result = await _mediator.Send(deleteCommand);
return(result.ToActionResult());
}
