public async Task <string> SaveUniqueFileAsync(
Stream stream,
string fileName,
string path)
{
var parts = fileName.Split('.');
var extension = parts[parts.Length - 1];
if (string.IsNullOrEmpty(extension))
{
throw new Exception("Could not obtain a fie extension!");
}
if (extension.Length > 6)
{
throw new Exception("The file extension is not valid!");
}
string fullPath;
if (!path.EndsWith("\\"))
{
path = path + "\\";
}
do
{
fileName = System.Guid.NewGuid().ToString();
fileName = fileName.Substring(0, ByMaxFileNameLength - extension.Length - 1);
fileName = fileName + "." + extension;
fullPath = path + fileName;
} while (_fileSystem.FileExists(fullPath));
if (_logger.IsEnabled(LogLevel.Information))
{
_logger.LogInformation($"Attempting to save unique file to {fullPath}.");
}
// write the file
await _fileSystem.CreateFileAsync(fullPath, stream);
if (_logger.IsEnabled(LogLevel.Information))
{
_logger.LogInformation($"Successfully saved unique file at {fullPath}.");
}
return(fileName);
}
public bool FileExists(string path)
{
return(_fileSystem.FileExists(path));
}