internal void RemoveUpload(FileUpload upload, bool deleteFile)
{
Debug.Assert (this.session != null, "Session is required!");
Debug.Assert (upload.State == FileUpload.STATE.Stopped, "Only stopped uploads can be removed!");
var activeUpload = this.GetUploadByUniqueId (upload.UniqueId);
Debug.Assert (activeUpload != null, "Requested upload not found in active uploads!");
this.ActiveUploads.Remove (activeUpload);
if (deleteFile)
{
try
{
File.Delete(upload.LocalFilePath);
}
catch(Exception ex)
{
Console.WriteLine ($"Failed to delete local file at '{upload.LocalFilePath}: {ex}");
}
}
}
internal void StopUpload(FileUpload upload)
{
Debug.Assert (this.session != null, "Session is required!");
Debug.Assert (upload.State == FileUpload.STATE.Started, "Only started uploads can be stopped!");
upload.State = FileUpload.STATE.Stopping;
Debug.Assert (upload.IsStateValid (), "Invalid state after trying to stop upload!");
upload.UploadTask.Cancel ();
}
public FileUpload CreateFileUpload(NSUrlRequest request, string localFilename)
{
Debug.Assert (this.session != null, "Session is required to create upload task!");
Debug.Assert(request != null, "Cannot create upload without request!");
Debug.Assert(!string.IsNullOrWhiteSpace(localFilename), "Cannot upload non-existing file!");
Console.WriteLine ($"Creating upload task for file '{localFilename}'.");
var upload = new FileUpload(
request: request,
uniqueId: System.Guid.NewGuid().ToString(),
localFilePath: localFilename,
creationDate: DateTime.Now,
manager: this);
Debug.Assert (upload.State == FileUpload.STATE.Stopped || upload.State == FileUpload.STATE.Failed, "Invalid state of file upload object!");
Console.WriteLine ($"Adding active upload with ID '{upload.UniqueId}'.");
this.ActiveUploads.Add (upload);
return upload;
}
internal void StartUpload(FileUpload upload)
{
upload.UploadTask = this.session.CreateUploadTask (upload.Request, NSUrl.FromFilename(upload.LocalFilePath));
upload.Error = null;
upload.State = FileUpload.STATE.Started;
Debug.Assert (upload.IsStateValid(), "Invalid state of upload/upload task!");
upload.UploadTask.Resume ();
}
/// <summary>
/// Helper to add an upload to the list of pending uploads.
/// </summary>
/// <param name="upload">Upload to add.</param>
void AddUpload(FileUpload upload)
{
if(upload == null)
{
return;
}
Debug.Assert(!string.IsNullOrWhiteSpace(upload.UniqueId), "Added upload must have a unique ID!");
this.ActiveUploads.Add(upload);
}