private async Task <UploadedFileViewModel> HandleSingleFile(
byte[] fileData,
string fileName,
string dataProjectId,
string uploaderInitials)
{
var extension = Path.GetExtension(fileName)?.ToLowerInvariant();
if (extension == null)
{
throw new Exception("File has no extension");
}
var matchingFileHandlers = fileHandlers.ContainsKey(extension)
? fileHandlers[extension]
: new List <IFileHandler>();
var dataBlob = DataBlobBuilder.FromByteArray(fileData, fileName);
FileHandlingStatus fileStatus;
if (await dataBlobDatabase.ExistsAsync(dataBlob.Id))
{
fileStatus = FileHandlingStatus.AlreadyExists;
}
else
{
await dataBlobDatabase.StoreAsync(dataBlob);
fileStatus = FileHandlingStatus.Success;
}
Dictionary <string, object> additionalInformation = null;
if (matchingFileHandlers.Any(x => x.RequiresAdditionalInformation))
{
var additionalInformationRequiringFileHandlers = matchingFileHandlers.Where(x => x.RequiresAdditionalInformation).ToList();
var requestResult = await RequestAdditionalInformation(additionalInformationRequiringFileHandlers, fileName);
if (!requestResult.IsRequestCompleted)
{
return(UploadedFileViewModel.Failed(fileName, "Not enough information provided"));
}
additionalInformation = requestResult.AdditionalInformationObjects;
}
var rawDataReference = DataReference.FromIId(dataBlob);
var fileViewModels = new List <IDerivedFileDataViewModel>();
var derivedDataReferences = new List <DataReference>();
foreach (var matchingFileHandler in matchingFileHandlers)
{
var fileHandlerType = matchingFileHandler.GetType().Name;
var fileHandlerAdditionalInformation = additionalInformation.ContainsKey(fileHandlerType)
? additionalInformation[fileHandlerType]
: null;
var fileHandlerResult = await matchingFileHandler.Handle(fileData, fileName, dataProjectId, fileHandlerAdditionalInformation);
fileViewModels.AddRange(fileHandlerResult.ViewModels);
derivedDataReferences.AddRange(fileHandlerResult.DerivedDataReferences);
}
var uploadInfo = new DataProjectUploadInfo(
uploaderInitials,
DateTime.UtcNow,
dataProjectId,
rawDataReference,
derivedDataReferences,
fileName);
await dataProjectUploadInfoDatabase.StoreAsync(uploadInfo);
return(new UploadedFileViewModel(
fileName,
fileStatus,
string.Empty,
uploadInfo.Id,
rawDataReference,
derivedDataReferences,
dataApiClient,
fileViewModels,
clipboard));
}
