/// <summary>
/// Checks files in FlashAir card.
/// </summary>
private async Task CheckFileBaseAsync()
{
OperationStatus = Resources.OperationStatus_Checking;
try
{
using (var manager = new FileManager())
{
_tokenSourceWorking = new CancellationTokenSourcePlus();
// Check firmware version.
_card.FirmwareVersion = await manager.GetFirmwareVersionAsync(_tokenSourceWorking.Token);
// Check CID.
if (_card.CanGetCid)
{
_card.Cid = await manager.GetCidAsync(_tokenSourceWorking.Token);
}
// Check SSID and check if PC is connected to FlashAir card by a wireless connection.
_card.Ssid = await manager.GetSsidAsync(_tokenSourceWorking.Token);
_card.IsWirelessConnected = NetworkChecker.IsWirelessNetworkConnected(_card.Ssid);
// Get all items.
var fileListNew = (await manager.GetFileListRootAsync(_card, _tokenSourceWorking.Token))
.Select(fileItem => new FileItemViewModel(fileItem))
.ToList();
fileListNew.Sort();
// Record time stamp of write event.
if (_card.CanGetWriteTimeStamp)
{
_card.WriteTimeStamp = await manager.GetWriteTimeStampAsync(_tokenSourceWorking.Token);
}
await Task.Run(() =>
{
// Check if any sample is in old items.
var isSample = FileListCore.Any(x => x.Size == 0);
// Check if FlashAir card is changed.
bool isChanged;
if (_card.IsChanged.HasValue)
{
isChanged = _card.IsChanged.Value;
}
else
{
var signaturesOld = new HashSet <string>(FileListCore.Select(x => x.Signature));
isChanged = !fileListNew.Select(x => x.Signature).Any(x => signaturesOld.Contains(x));
}
if (isSample || isChanged)
{
FileListCore.Clear();
}
// Check old items.
foreach (var itemOld in FileListCore)
{
var itemSameIndex = fileListNew.IndexOf(x =>
x.FilePath.Equals(itemOld.FilePath, StringComparison.OrdinalIgnoreCase) &&
(x.Size == itemOld.Size));
if (itemSameIndex >= 0)
{
itemOld.IsAliveRemote = true;
itemOld.FileItem = fileListNew[itemSameIndex].FileItem;
fileListNew.RemoveAt(itemSameIndex);
continue;
}
itemOld.IsAliveRemote = false;
}
// Add new items (This operation may be heavy).
var isLeadOff = true;
foreach (var itemNew in fileListNew)
{
if (isLeadOff)
{
InvokeSafely(() => FileListCoreViewIndex = FileListCoreView.IndexOf(itemNew));
isLeadOff = false;
}
itemNew.IsAliveRemote = true;
FileListCore.Insert(itemNew); // Customized Insert method
}
// Check all local files.
foreach (var item in FileListCore)
{
var info = GetFileInfoLocal(item);
item.IsAliveLocal = IsAliveLocal(info, item.Size);
item.IsAvailableLocal = IsAvailableLocal(info);
item.Status = item.IsAliveLocal ? FileStatus.Copied : FileStatus.NotCopied;
}
// Manage deleted items.
var itemDeletedPairs = FileListCore
.Select((x, Index) => !x.IsAliveRemote ? new { Item = x, Index } : null)
.Where(x => x != null)
.OrderByDescending(x => x.Index)
.ToArray();
foreach (var itemDeletedPair in itemDeletedPairs)
{
var item = itemDeletedPair.Item;
if (Settings.Current.MovesFileToRecycle &&
item.IsDescendant &&
(item.Status == FileStatus.Copied))
{
try
{
Recycle.MoveToRecycle(ComposeLocalPath(item));
item.Status = FileStatus.Recycled;
}
catch (Exception ex)
{
Debug.WriteLine($"Failed to move a file to Recycle.\r\n{ex}");
item.Status = FileStatus.NotCopied;
}
}
if (!item.IsDescendant ||
((item.Status != FileStatus.Copied) && (item.Status != FileStatus.Recycled)))
{
FileListCore.RemoveAt(itemDeletedPair.Index);
}
}
});
// Get thumbnails (from local).
foreach (var item in FileListCore.Where(x => x.IsTarget && !x.HasThumbnail))
{
if (!item.IsAliveLocal || !item.IsAvailableLocal || !item.CanLoadDataLocal)
{
continue;
}
_tokenSourceWorking.Token.ThrowIfCancellationRequested();
try
{
if (item.CanReadExif)
{
item.Thumbnail = await ImageManager.ReadThumbnailAsync(ComposeLocalPath(item));
}
else if (item.CanLoadDataLocal)
{
item.Thumbnail = await ImageManager.CreateThumbnailAsync(ComposeLocalPath(item));
}
}
catch (FileNotFoundException)
{
item.Status = FileStatus.NotCopied;
item.IsAliveLocal = false;
}
catch (IOException)
{
item.IsAvailableLocal = false;
}
catch (ImageNotSupportedException)
{
item.CanLoadDataLocal = false;
}
}
// Get thumbnails (from remote).
foreach (var item in FileListCore.Where(x => x.IsTarget && !x.HasThumbnail))
{
if (!item.IsAliveRemote || !item.CanGetThumbnailRemote)
{
continue;
}
_tokenSourceWorking.Token.ThrowIfCancellationRequested();
try
{
item.Thumbnail = await manager.GetThumbnailAsync(item.FilePath, _card, _tokenSourceWorking.Token);
}
catch (RemoteFileThumbnailFailedException)
{
item.CanGetThumbnailRemote = false;
}
}
}
OperationStatus = Resources.OperationStatus_CheckCompleted;
}
finally
{
FileListCoreViewIndex = -1; // No selection
_tokenSourceWorking?.Dispose();
}
}
/// <summary>
/// Check files in FlashAir card.
/// </summary>
private async Task CheckFileBaseAsync()
{
OperationStatus = Resources.OperationStatus_Checking;
try
{
tokenSourceWorking = new CancellationTokenSource();
isTokenSourceWorkingDisposed = false;
// Check firmware version.
card.FirmwareVersion = await FileManager.GetFirmwareVersionAsync(tokenSourceWorking.Token);
// Check CID.
if (card.CanGetCid)
{
card.Cid = await FileManager.GetCidAsync(tokenSourceWorking.Token);
}
// Check SSID.
card.Ssid = await FileManager.GetSsidAsync(tokenSourceWorking.Token);
if (!String.IsNullOrWhiteSpace(card.Ssid))
{
// Check if PC is connected to FlashAir card by wireless network.
var checkTask = Task.Run(async() =>
card.IsWirelessConnected = await NetworkChecker.IsWirelessNetworkConnectedAsync(card.Ssid));
}
// Get all items.
var fileListNew = await FileManager.GetFileListRootAsync(tokenSourceWorking.Token, card);
fileListNew.Sort();
// Record time stamp of write event.
if (card.CanGetWriteTimeStamp)
{
card.WriteTimeStamp = await FileManager.GetWriteTimeStampAsync(tokenSourceWorking.Token);
}
// Check if any sample is in old items.
var isSample = FileListCore.Any(x => x.Size == 0);
// Check if FlashAir card is changed.
bool isChanged;
if (card.IsChanged.HasValue)
{
isChanged = card.IsChanged.Value;
}
else
{
var signatures = FileListCore.Select(x => x.Signature).ToArray();
isChanged = !fileListNew.Select(x => x.Signature).Any(x => signatures.Contains(x));
}
if (isSample || isChanged)
{
FileListCore.Clear();
}
// Check old items.
foreach (var itemOld in FileListCore)
{
var itemBuff = fileListNew.FirstOrDefault(x => x.FilePath == itemOld.FilePath);
if ((itemBuff != null) && (itemBuff.Size == itemOld.Size))
{
fileListNew.Remove(itemBuff);
itemOld.IsAliveRemote = true;
itemOld.IsAliveLocal = IsCopiedLocal(itemOld);
itemOld.Status = itemOld.IsAliveLocal ? FileStatus.Copied : FileStatus.NotCopied;
continue;
}
itemOld.IsAliveRemote = false;
}
// Add new items.
var isLeadOff = true;
foreach (var itemNew in fileListNew)
{
if (isLeadOff)
{
FileListCoreViewIndex = FileListCoreView.IndexOf(itemNew);
isLeadOff = false;
}
itemNew.IsAliveRemote = true;
itemNew.IsAliveLocal = IsCopiedLocal(itemNew);
itemNew.Status = itemNew.IsAliveLocal ? FileStatus.Copied : FileStatus.NotCopied;
FileListCore.Insert(itemNew); // Customized Insert method
}
// Manage deleted items.
var itemsDeleted = FileListCore.Where(x => !x.IsAliveRemote && (x.Status != FileStatus.Recycled)).ToArray();
if (itemsDeleted.Any())
{
if (Settings.Current.MovesFileToRecycle)
{
var itemsDeletedCopied = itemsDeleted.Where(x => x.Status == FileStatus.Copied).ToList();
Recycle.MoveToRecycle(itemsDeletedCopied.Select(ComposeLocalPath));
itemsDeletedCopied.ForEach(x => x.Status = FileStatus.Recycled);
}
for (int i = itemsDeleted.Length - 1; i >= 0; i--)
{
if ((itemsDeleted[i].Status == FileStatus.Copied) ||
(itemsDeleted[i].Status == FileStatus.Recycled))
{
continue;
}
FileListCore.Remove(itemsDeleted[i]);
}
}
// Get thumbnails (from local).
foreach (var item in FileListCore)
{
if (!item.IsTarget || item.HasThumbnail || (item.Status != FileStatus.Copied) || !item.IsAliveLocal || !item.CanLoadDataLocal)
{
continue;
}
tokenSourceWorking.Token.ThrowIfCancellationRequested();
try
{
if (item.CanReadExif)
{
item.Thumbnail = await ImageManager.ReadThumbnailAsync(ComposeLocalPath(item));
}
else if (item.CanLoadDataLocal)
{
item.Thumbnail = await ImageManager.CreateThumbnailAsync(ComposeLocalPath(item));
}
}
catch (FileNotFoundException)
{
item.Status = FileStatus.NotCopied;
item.IsAliveLocal = false;
}
catch (IOException)
{
item.CanLoadDataLocal = false;
}
catch (ImageNotSupportedException)
{
item.CanLoadDataLocal = false;
}
}
// Get thumbnails (from remote).
foreach (var item in FileListCore)
{
if (!item.IsTarget || item.HasThumbnail || (item.Status == FileStatus.Copied) || !item.IsAliveRemote || !item.CanGetThumbnailRemote)
{
continue;
}
if (!card.CanGetThumbnail)
{
continue;
}
tokenSourceWorking.Token.ThrowIfCancellationRequested();
try
{
item.Thumbnail = await FileManager.GetThumbnailAsync(item.FilePath, tokenSourceWorking.Token, card);
}
catch (RemoteFileThumbnailFailedException)
{
item.CanGetThumbnailRemote = false;
card.ThumbnailFailedPath = item.FilePath;
}
}
OperationStatus = Resources.OperationStatus_CheckCompleted;
}
finally
{
FileListCoreViewIndex = -1; // No selection
if (tokenSourceWorking != null)
{
isTokenSourceWorkingDisposed = true;
tokenSourceWorking.Dispose();
}
}
}