/// <summary>
/// Stores the specified demo in this <see cref="IDemoRepository" />.
/// </summary>
/// <param name="demo">The demo.</param>
/// <param name="progressChanged">Callback called when the progress has changed.</param>
/// <exception cref="System.ArgumentNullException">demo</exception>
/// <exception cref="System.Exception">Game is not installed</exception>
public Task <IDemo> Store(IDemo demo, Action <int> progressChanged)
{
if (demo == null)
{
throw new ArgumentNullException("demo");
}
var game = demo.Version.GetGame();
if (game == null)
{
throw new Exception("Game is not installed");
}
var localPath = game.GetDemoStorageFolder(demo);
// Ensure the local directory exists.
if (!Directory.Exists(localPath))
{
Directory.CreateDirectory(localPath);
}
// Make sure the file doesn't already exist.
var filename = string.Format("{0}.{1}", demo.Name, game.GetDemoExtension());
if (File.Exists(Path.Combine(localPath, filename)))
{
// If the file does already exist, check if the creation date is different.
if (demo.Date == File.GetCreationTimeUtc(Path.Combine(localPath, filename)))
{
return(Task.FromResult <IDemo>(new LocalDemo(Path.Combine(localPath, filename), demo.Version)));
}
// If the files are different, make the name unique.
var attempts = 0;
do
{
filename = string.Format("{0}.{2}.{1}", demo.Name, game.GetDemoExtension(), attempts);
attempts++;
} while (File.Exists(Path.Combine(localPath, filename)));
}
return(Task.Run(() =>
{
// Write the demo to the local path.
using (var readStream = demo.Open())
using (var writeStream = File.OpenWrite(Path.Combine(localPath, filename)))
{
writeStream.WriteProgressed(readStream, demo.Size, progressChanged);
}
// Set the creation date of the file to match the recording date of the demo.
File.SetCreationTimeUtc(Path.Combine(localPath, filename), demo.Date);
return (IDemo) new LocalDemo(Path.Combine(localPath, filename), demo.Version);
}));
}