public async Task <IActionResult> GetPathTree([FromBody] PathTreeRequestDto request, [FromQuery] bool keepOrder,
CancellationToken cancellationToken)
{
var response = new PathTreeResponseDto();
var directoryHelper = new DirectoryHelper();
Task <IEnumerable <FileExplorerEntry> > entriesTask = null;
if (request.RequestEntries)
{
entriesTask = keepOrder
? directoryHelper.GetEntriesKeepOrder(request.Path, cancellationToken)
: directoryHelper.GetEntries(request.Path, cancellationToken);
}
if (request.RequestedDirectories?.Count > 0)
{
var pathDirectories = PathHelper.GetPathDirectories(request.Path).ToList();
var directories = new ConcurrentDictionary <int, List <DirectoryEntry> >();
await TaskCombinators.ThrottledAsync(request.RequestedDirectories, async (i, token) =>
{
var directoryPath = pathDirectories[i];
directories.TryAdd(i,
(await directoryHelper.GetDirectoryEntries(directoryPath, cancellationToken)).ToList());
}, CancellationToken.None);
response.Directories = directories;
}
if (entriesTask != null)
{
response.Entries = (await entriesTask).ToList();
}
return(Ok(response));
}
public async Task <PathContent> FetchPath(string path, bool ignoreEntriesCache, bool ignorePathCache,
CancellationToken token)
{
if (PathHelper.ContainsEnvironmentVariables(path))
{
path = await FileSystemResource.ExpandEnvironmentVariables(path, _restClient);
}
path = NormalizePath(path);
var request = new PathTreeRequestDto {
Path = path, RequestedDirectories = new List <int>()
};
if (ignoreEntriesCache || !TryGetCachedDirectory(path, out var cachedDirectory) ||
cachedDirectory.DirectoriesOnly)
{
request.RequestEntries = true;
}
var parts = PathHelper.GetPathDirectories(path).ToList();
for (var i = 0; i < parts.Count; i++)
{
var partPath = parts[i];
if (ignorePathCache || !TryGetCachedDirectory(partPath, out _))
{
request.RequestedDirectories.Add(i);
}
}
PathTreeResponseDto queryResponse = null;
if (request.RequestEntries || request.RequestedDirectories.Any())
{
queryResponse = await FileExplorerResource.GetPathTree(request,
DirectoryHelper.IsComputerDirectory(path), token, _restClient);
}
parts.Add(path);
DirectoryEntry directory = null;
var pathDirectories = new List <DirectoryEntry>();
IReadOnlyList <FileExplorerEntry> directoryEntries = null;
for (var i = 0; i < parts.Count; i++)
{
var directoryPath = parts[i];
if (directory == null)
{
if (TryGetCachedDirectory(directoryPath, out cachedDirectory))
{
directory = cachedDirectory.Directory;
}
else
{
directory = _computerDirectory.Entries.OfType <DirectoryEntry>()
.FirstOrDefault(x => string.Equals(x.Path, directoryPath, PathStringComparison));
}
}
if (directory == null) //Special folders like trash can etc.
{
directory = await FileSystemResource.GetDirectoryEntry(directoryPath, _restClient);
directory.Migrate();
}
if (request.RequestEntries && i == parts.Count - 1)
{
// ReSharper disable once PossibleNullReferenceException
directoryEntries = queryResponse.Entries;
foreach (var entry in directoryEntries)
{
entry.Migrate(directory);
}
AddToCache(directory, directoryEntries, false);
}
else if (queryResponse?.Directories != null && queryResponse.Directories.TryGetValue(i, out var subDirectories))
{
directoryEntries = subDirectories;
foreach (var directoryEntry in directoryEntries)
{
directoryEntry.Migrate(directory);
}
AddToCache(directory, directoryEntries, true);
}
else
{
directoryEntries = _localCache[NormalizePath(directoryPath)].Entries.ToList();
}
pathDirectories.Add(directory);
//if we are not at the very last part (so there is a child directory)
if (i < parts.Count - 1)
{
var normalizedPath = NormalizePath(parts[i + 1]); //path of the child directory
var nextDirectory = directoryEntries.OfType <DirectoryEntry>().FirstOrDefault(x =>
string.Equals(normalizedPath, NormalizePath(x.Path), PathStringComparison));
if (nextDirectory == null)
{
nextDirectory = new DirectoryEntry
{
HasSubFolder = true,
Parent = directory,
Name = GetDirectoryName(normalizedPath)
};
directoryEntries = directoryEntries.Concat(new[] { nextDirectory }).ToList();
//update cache
var key = NormalizePath(directoryPath);
var oldCache = _localCache[key];
_localCache[key] = new CachedDirectory(oldCache.Directory, oldCache.DirectoriesOnly,
directoryEntries);
}
directory = nextDirectory;
}
}
return(new PathContent(directory, directoryEntries, pathDirectories));
}
