private bool TryGetCacheImageStream(string id, string imageUrl, out Stream outImageStream)
{
id = $"$/{id}";
if (_fileStorage.Exists(id))
{
var file = _fileStorage.FindById(id);
var stream = new MemoryStream((int)file.Length);
try
{
file.CopyTo(stream);
stream.Seek(0, SeekOrigin.Begin);
_fileStorage.SetMetadata(id, new BsonDocument(new Dictionary <string, BsonValue>()
{
{ "updateAt", DateTime.Now }
}));
outImageStream = stream;
return(true);
}
catch
{
stream.Dispose();
throw;
}
}
else
{
outImageStream = null;
return(false);
}
}
public async Task <Stream> GetImageAsync(string path)
{
try
{
if (path.StartsWith("/"))
{
return(await ImageClient.GetStreamAsync("original" + path));
}
else if (!path.StartsWith("w"))
{
return(await YouTubeClient.GetStreamAsync(String.Format("{0}/0.jpg", path)));
}
string id = path.ComputeHash();
LiteFileInfo fileInfo = FileStorage.FindById(id);
if (fileInfo == null)
{
try
{
using (Stream stream = await ImageClient.GetStreamAsync(path))
{
if (stream != null)
{
using (MemoryStream memoryStream = new MemoryStream())
{
stream.CopyTo(memoryStream);
if (memoryStream.Length > 0)
{
memoryStream.Position = 0;
fileInfo = FileStorage.Upload(id, path, memoryStream);
}
}
}
}
}
catch (Exception)
{
return(null);
}
}
if (fileInfo == null)
{
return(null);
}
MemoryStream cachedStream = new MemoryStream();
fileInfo.CopyTo(cachedStream);
cachedStream.Position = 0;
return(cachedStream);
}
catch (Exception)
{
return(null);
}
}
public TFile Get(String idOrName)
{
LiteFileInfo fileInfo = _fileStorage.FindById(idOrName);
if (fileInfo == null)
{
return(null);
}
return(fileInfo.ToStorageFile <TFile>());
}
public IEnumerable <BsonValue> Execute(StringScanner s, LiteEngine engine)
{
var fs = new LiteStorage(engine);
var id = this.ReadId(s);
var filename = s.Scan(@"\s*.*").Trim();
var file = fs.FindById(id);
if (file != null)
{
file.SaveAs(filename);
yield return(file.AsDocument);
}
}
public void Execute(LiteEngine engine, StringScanner s, Display display, InputCommand input, Env env)
{
var fs = new LiteStorage(engine);
var id = this.ReadId(s);
var filename = s.Scan(@"\s*.*").Trim();
var file = fs.FindById(id);
if (file != null)
{
file.SaveAs(filename);
display.WriteResult(file.AsDocument);
}
}
public void Execute(LiteEngine engine, StringScanner s, Display display, InputCommand input, Env env)
{
var fs = new LiteStorage(engine);
var id = this.ReadId(s);
var filename = s.Scan(@"\s*.*").Trim();
var file = fs.FindById(id);
if (file != null)
{
file.SaveAs(filename);
display.WriteResult(file.AsDocument);
}
}
