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// Copyright (C) 2015, The Duplicati Team
// http://www.duplicati.com, info@duplicati.com
//
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 2.1 of the
// License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
using Duplicati.Library.Common.IO;
using Duplicati.Library.Interface;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
namespace Duplicati.Library.Backend.IDrive
{
// ReSharper disable once UnusedMember.Global
// This class is instantiated dynamically in the BackendLoader.
public class IDriveBackend : IBackend, IStreamingBackend
{
private readonly string _username = null;
private readonly string _password = null;
private readonly string _baseDirectoryPath = null;
public string DisplayName => Strings.IDriveBackend.DisplayName;
public string Description => Strings.IDriveBackend.Description;
public string[] DNSName => null;
public string ProtocolKey => "idrive";
CancellationTokenSource _cancellationTokenSource = new CancellationTokenSource();
public IList<ICommandLineArgument> SupportedCommands
{
get
{
return new List<ICommandLineArgument>(new ICommandLineArgument[] {
new CommandLineArgument("auth-password", CommandLineArgument.ArgumentType.Password, Strings.IDriveBackend.AuthPasswordDescriptionShort, Strings.IDriveBackend.AuthPasswordDescriptionLong),
new CommandLineArgument("auth-username", CommandLineArgument.ArgumentType.String, Strings.IDriveBackend.AuthUsernameDescriptionShort, Strings.IDriveBackend.AuthUsernameDescriptionLong)
});
}
}
private Dictionary<string, FileEntry> _fileCache;
protected Dictionary<string, FileEntry> FileCache
{
get
{
if (_fileCache == null)
ResetFileCacheAsync().Wait();
return _fileCache;
}
set
{
_fileCache = value;
}
}
private IDriveApiClient _client;
protected IDriveApiClient Client
{
get
{
if (_client == null)
{
var cl = new IDriveApiClient();
cl.LoginAsync(_username, _password).Wait();
_client = cl;
}
return _client;
}
}
public IDriveBackend()
{
}
public IDriveBackend(string url, Dictionary<string, string> options)
{
var uri = new Utility.Uri(url); // Sample url: idrive://Directory1/SubDirectory1?auth-username=MyUsername&auth-password=MyPassword
_username = uri.Username;
_password = uri.Password;
if (string.IsNullOrEmpty(_username) && options.TryGetValue("auth-username", out string username))
_username = username;
if (string.IsNullOrEmpty(_password) && options.TryGetValue("auth-password", out string password))
_password = password;
if (string.IsNullOrEmpty(_username))
throw new UserInformationException(Strings.IDriveBackend.NoUsernameError, "IDriveNoUsername");
if (string.IsNullOrEmpty(_password))
throw new UserInformationException(Strings.IDriveBackend.NoPasswordError, "IDriveNoPassword");
_baseDirectoryPath = ("/" + (uri.HostAndPath ?? "").Trim('/') + "/").Replace("//", "/");
}
private async Task ResetFileCacheAsync()
{
FileCache = (await Client.GetFileEntryListAsync(_baseDirectoryPath))
.Where(x => !x.IsFolder)
.ToDictionary(x => x.Name, x => x);
}
public IEnumerable<IFileEntry> List()
{
return FileCache.Values;
}
public void Get(string filename, string localFilePath)
{
using (var fileStream = File.Create(localFilePath))
Get(filename, fileStream);
}
public void Get(string filename, Stream stream)
{
Client.DownloadAsync(Path.Combine(_baseDirectoryPath, filename), stream).Wait();
}
public async Task PutAsync(string filename, string localFilePath, CancellationToken cancellationToken)
{
using (var fileStream = File.OpenRead(localFilePath))
await PutAsync(filename, fileStream, cancellationToken);
}
public async Task PutAsync(string filename, Stream stream, CancellationToken cancellationToken)
{
try
{
var fileEntry = await Client.UploadAsync(stream, filename, _baseDirectoryPath, cancellationToken);
FileCache[filename] = fileEntry;
}
catch
{
FileCache = null;
throw;
}
}
public void Delete(string filename)
{
try
{
if (!FileCache.ContainsKey(filename))
{
ResetFileCacheAsync().Wait();
if (!FileCache.ContainsKey(filename))
throw new FileMissingException();
}
Client.DeleteAsync(Path.Combine(_baseDirectoryPath, filename), _cancellationTokenSource.Token, false).Wait();
FileCache.Remove(filename);
}
catch
{
FileCache = null;
throw;
}
}
public void CreateFolder()
{
var directoryParts = _baseDirectoryPath.Split('/').Where(d => !string.IsNullOrEmpty(d));
string baseDirectory = "/";
foreach (string directoryPart in directoryParts)
{
Client.CreateDirectoryAsync(directoryPart, baseDirectory, _cancellationTokenSource.Token).Wait();
baseDirectory += directoryPart + "/";
}
}
public void Test()
{
this.TestList();
}
#region IDisposable Support
private bool _disposedValue = false; // To detect redundant calls
protected virtual void Dispose(bool disposing)
{
if (!_disposedValue)
{
if (disposing)
{
}
_disposedValue = true;
}
}
// This code added to correctly implement the disposable pattern.
public void Dispose()
{
// Do not change this code. Put cleanup code in Dispose(bool disposing) above.
Dispose(true);
}
#endregion
}
}
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