public async Task<DFileInfo> CreateFolderAsync(DFileInfo destinationFolder, string name)
{
var dest = (SkydriveFileInfo)destinationFolder;
var url = string.Format(SkydriveConfig.FileInfoUrlTemplate, dest.Id);
var data = "{ \"name\" : \"" + name + "\" }";
string response = await dataToServer(data, url, "POST").ConfigureAwait(false);
var newFolder = new SkydriveFileInfo() { Parent = destinationFolder };
setupFileWithMetadata(newFolder, JToken.Parse(response));
return newFolder;
}
public async Task<Stream> GetDownloadStreamAsync(DFileInfo file)
{
if (file.IsDirectory)
throw new NotSupportedException("Downloading a folder is not supported.");
var dFile = (DropboxFileInfo)file;
var url = new StringBuilder(DropboxConfig.DownloadUrl);
url.Append(DropboxConfig.AccessType);
url.Append(dFile.Path);
ParamUrl queryUrl = new ParamUrl(url.ToString());
try
{
var signedUrl = await signAsync(queryUrl).ConfigureAwait(false);
var request = (HttpWebRequest)WebRequest.Create(signedUrl);
request.Method = WebRequestMethods.Http.Get;
var response = await request.GetResponseAsync().ConfigureAwait(false);
return response.GetResponseStream();
}
catch (WebException e)
{
throw parseException(e);
}
}
public async Task NavigatedToAsync(DFileInfo file)
{
if (!file.IsDirectory) return;
var contents = await getFolderContentsMetadata((SkydriveFileInfo)file).ConfigureAwait(false);
file.Contents.Clear();
foreach (JToken entry in contents)
{
var newFile = new SkydriveFileInfo() { Parent = file };
setupFileWithMetadata(newFile, entry);
file.Contents.Add(newFile.Id, newFile);
}
}
/// <summary>
/// Copies this file or a folder to the different location.
/// </summary>
/// <param name="destinationFolder">The new location of the file.</param>
/// <returns>File info of the copied file.</returns>
public Task<DFileInfo> CopyAsync(DFileInfo destinationFolder)
{
return localFileOperationAsync(destinationFolder, false);
}
public async Task DeleteAsync(DFileInfo file)
{
var dFile = (DropboxFileInfo)file;
var url = new ParamUrl(DropboxConfig.DeleteUrl);
url.Add("root", DropboxConfig.AccessType);
url.Add("path", percentEncoding(dFile.Path));
await queryServer(url).ConfigureAwait(false);
file.Parent.Contents.Remove(file.Name.ToLowerInvariant());
file = null;
}
public async Task<DFileInfo> RenameAsync(DFileInfo file, string newName)
{
var sFile = (SkydriveFileInfo)file;
var url = string.Format(SkydriveConfig.FileInfoUrlTemplate, sFile.Id);
var data = "{ \"name\": \"" + newName + "\" }";
var response = await dataToServer(data, url, "PUT").ConfigureAwait(false);
var metadata = JToken.Parse(response);
setupFileWithMetadata(sFile, metadata);
return sFile;
}
public Task<DFileInfo> CopyAsync(DFileInfo file, DFileInfo destinationFolder)
{
return fileOperation((SkydriveFileInfo)file, (SkydriveFileInfo)destinationFolder, "COPY");
}
public async Task<DFileInfo> CreateFolderAsync(DFileInfo destinationFolder, string name)
{
string nameKey = name.ToLowerInvariant();
if (destinationFolder.Contents.ContainsKey(nameKey))
throw new FileConflictException("Entry with name specified is already present.");
var dParent = (DropboxFileInfo)destinationFolder;
string path = concatenatePath(dParent.Path, name);
var url = new ParamUrl(DropboxConfig.CreateFolderUrl);
url.Add("root", DropboxConfig.AccessType);
url.Add("path", path);
var response = await queryServer(url).ConfigureAwait(false);
var metadata = JObject.Parse(response);
var newFolder = new DropboxFileInfo() { Parent = dParent };
setupFileWithMetadata(newFolder, metadata);
dParent.Contents.Add(nameKey, newFolder);
return newFolder;
}
public async Task<DFileInfo> UploadFileAsync(DFileInfo destinationFolder, string name, Stream stream,
CancellationToken cancellationToken, IProgress<int> progress, long fileSize)
{
var dDestFolder = (DropboxFileInfo)destinationFolder;
string uploadId = null;
using (stream)
{
if (progress != null) progress.Report(0);
var buffer = new byte[DropboxConfig.ChunkSize];
long totalUploaded = 0, offset = 0;
// Some data is read from the buffer until it is full and we
// attempt to push it to the server until it acknowledges all of it.
while (true)
{
int bytesRead = 0, bytesReadThisTime = 0;
while (bytesRead < buffer.Length)
{
bytesReadThisTime =
await stream.ReadAsync(buffer, bytesRead, buffer.Length - bytesRead).ConfigureAwait(false);
bytesRead += bytesReadThisTime;
if (bytesReadThisTime == 0) break;
}
if (bytesRead == 0) break;
int relativeOffset = 0;
// relativeOffset shows how many bytes server already accepted.
while (relativeOffset < bytesRead)
{
cancellationToken.ThrowIfCancellationRequested();
var url = new ParamUrl(DropboxConfig.UploadUrl);
url.Add("offset", (offset + relativeOffset).ToString());
if (uploadId != null) url.Add("upload_id", uploadId);
var signedUrl = await signAsync(url).ConfigureAwait(false);
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(signedUrl);
request.Method = WebRequestMethods.Http.Put;
request.ContentLength = bytesRead - relativeOffset;
using (var requestStream = await request.GetRequestStreamAsync().ConfigureAwait(false))
{
requestStream.Write(buffer, relativeOffset, bytesRead - relativeOffset);
}
JToken response;
try
{
var webResponse = await request.GetResponseAsync().ConfigureAwait(false);
StreamReader reader = new StreamReader(webResponse.GetResponseStream());
var jsonResult = reader.ReadToEnd();
reader.Close();
response = JToken.Parse(jsonResult);
}
catch (WebException e)
{
string message = e.ResponseString();
if (e.HttpStatusCode() == 400 && !string.IsNullOrEmpty(message))
{
response = JToken.Parse(message);
}
else throw parseException(e);
}
uploadId = (string)response["upload_id"];
relativeOffset = (int)((long)response["offset"] - offset);
totalUploaded = offset + relativeOffset;
if (progress != null) progress.Report((int)(totalUploaded * 100 / fileSize));
}
offset += bytesRead;
}
}
var baseUrl = new StringBuilder(DropboxConfig.UploadFinishUrl);
baseUrl.Append(DropboxConfig.AccessType);
baseUrl.Append(concatenatePath(dDestFolder.Path, name));
var finalUrl = new ParamUrl(baseUrl.ToString());
finalUrl.Add("upload_id", uploadId);
var finishResponse = await queryServer(finalUrl, WebRequestMethods.Http.Post).ConfigureAwait(false);
DropboxFileInfo file = new DropboxFileInfo() { Parent = destinationFolder };
setupFileWithMetadata(file, JToken.Parse(finishResponse));
destinationFolder.Contents.Add(name.ToLowerInvariant(), file);
return file;
}
private async Task<DFileInfo> localFileOperationAsync(DFileInfo destinationFolder, bool move)
{
if (destinationFolder == null)
throw new NullReferenceException(ExceptionMessage.IsNullOrInvalid("destinationFolder"));
if (destinationFolder.IsReadOnly)
throw new InvalidOperationException(ExceptionMessage.ReadOnly);
if (!destinationFolder.IsDirectory)
throw new InvalidOperationException("Destination is not a folder. Impossible to move/copy to a file.");
if (this.Provider == destinationFolder.Provider)
{
if (move)
{
return await Provider.MoveAsync(this, destinationFolder);
}
else
{
return await Provider.CopyAsync(this, destinationFolder);
}
}
else
{
if (this.IsDirectory)
throw new InvalidOperationException("Copying or moving folders between providers is not supported.");
Stream thisFile = await this.GetDownloadStreamAsync();
var file = await destinationFolder.CreateFileAsync(this.Name, thisFile, CancellationToken.None);
if (move) await this.DeleteAsync();
return file;
}
}
public async Task NavigatedToAsync(DFileInfo file)
{
// File system updates on hash mismatch.
var dFile = (DropboxFileInfo)file;
var metadata = await loadMetadata(dFile.Path, true, dFile.Hash).ConfigureAwait(false);
if (metadata != null)
{
setupFileWithMetadata(dFile, metadata);
await SynchronizeAsync().ConfigureAwait(false);
}
}
private static DFileInfo traverseFileSystem(DFileInfo currentFile, IEnumerator<string> nameEnumerator)
{
if (currentFile == null) return null;
currentFile.Navigated();
string name = nameEnumerator.Current;
var nextFile = currentFile.Find(name);
if (nameEnumerator.MoveNext())
return traverseFileSystem(nextFile, nameEnumerator);
else return nextFile;
}
/// <summary>
/// Copies this file or a folder to the different location.
/// </summary>
/// <param name="destinationFolder">The new location of the file.</param>
/// <returns>File info of the copied file.</returns>
public DFileInfo Copy(DFileInfo destinationFolder)
{
return this.CopyAsync(destinationFolder).Result;
}
/// <summary>
/// Moves this file or a folder to the different location.
/// </summary>
/// <param name="destinationFolder">The new location of the file.</param>
/// <returns>File info of the moved file.</returns>
public DFileInfo Move(DFileInfo destinationFolder)
{
return this.MoveAsync(destinationFolder).Result;
}
public async Task<DFileInfo> UploadFileAsync(DFileInfo destinationFolder, string name, Stream stream,
CancellationToken cancellationToken, IProgress<int> progress, long fileSize)
{
var dest = (SkydriveFileInfo)destinationFolder;
var url = sign(string.Format(SkydriveConfig.FilesUrlTemplate, dest.Id) + '/' + name) + "&overwrite=ChooseNewName";
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.Method = "PUT";
if (progress != null)
{
request.ContentLength = fileSize;
request.AllowWriteStreamBuffering = false;
}
try
{
using (var reqStream = await request.GetRequestStreamAsync())
{
await stream.CopyToAsync(reqStream, SkydriveConfig.ChunkSize, cancellationToken, progress, fileSize);
}
var webResponse = await request.GetResponseAsync();
using (var reader = new StreamReader(webResponse.GetResponseStream()))
{
var response = await reader.ReadToEndAsync().ConfigureAwait(false);
var metadata = JToken.Parse(response);
var newFile = new SkydriveFileInfo() { Parent = destinationFolder };
setupFileWithMetadata(newFile, metadata);
dest.Contents.Add(newFile.Id, newFile);
return newFile;
}
}
catch (WebException e)
{
throw parseException(e);
}
}
public Task<DFileInfo> RenameAsync(DFileInfo file, string newName)
{
return copyOperation((DropboxFileInfo)file, (DropboxFileInfo)file.Parent, true, newName);
}
public async Task<Stream> GetDownloadStreamAsync(DFileInfo file)
{
if (file.IsDirectory)
throw new NotSupportedException("Downloading a folder is not supported");
string url = string.Format(SkydriveConfig.FileContentUrlTemplate, ((SkydriveFileInfo)file).Id);
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(sign(url));
request.Method = WebRequestMethods.Http.Get;
try
{
var response = await request.GetResponseAsync().ConfigureAwait(false);
return response.GetResponseStream();
}
catch (WebException e)
{
throw parseException(e);
}
}
public Task<DFileInfo> MoveAsync(DFileInfo file, DFileInfo destFolder)
{
return copyOperation((DropboxFileInfo)file, (DropboxFileInfo)destFolder, true);
}
public Task<DFileInfo> MoveAsync(DFileInfo file, DFileInfo destinationFolder)
{
return fileOperation((SkydriveFileInfo)file, (SkydriveFileInfo)destinationFolder, "MOVE");
}
public Task<DFileInfo> CopyAsync(DFileInfo file, DFileInfo destFolder)
{
return copyOperation((DropboxFileInfo)file, (DropboxFileInfo)destFolder, false);
}
public async Task DeleteAsync(DFileInfo file)
{
var sFile = (SkydriveFileInfo)file;
var url = string.Format(SkydriveConfig.FileInfoUrlTemplate, sFile.Id);
// Server returns empty response which is no interest.
await queryServer(url, "DELETE");
if (sFile.Parent != null)
{
sFile.Parent.Contents.Remove(sFile.Id);
}
file = null;
}
/// <summary>
/// Moves this file or a folder to the different location.
/// </summary>
/// <param name="destinationFolder">The new location of the file.</param>
/// <returns>File info of the moved file.</returns>
public Task<DFileInfo> MoveAsync(DFileInfo destinationFolder)
{
if (IsReadOnly)
throw new InvalidOperationException(ExceptionMessage.ReadOnly);
return localFileOperationAsync(destinationFolder, true);
}