/// <summary>
/// Initializes a new instance of the <see cref="AssetManager"/> class with the specified path
/// pointing to the root of the asset directory.
/// </summary>
/// <param name="rootDir">Path pointing to the asset directory.</param>
/// <exception cref="ArgumentNullException"><paramref name="rootDir"/> is null.</exception>
/// <exception cref="DirectoryNotFoundException"><paramref name="rootDir"/> does not exists.</exception>
public AssetManager(string rootDir)
{
if (string.IsNullOrWhiteSpace(rootDir))
{
throw new ArgumentNullException(nameof(rootDir));
}
if (!Directory.Exists(rootDir))
{
throw new DirectoryNotFoundException($"Could not find directory at '{Path.GetFullPath(rootDir)}'.");
}
_rootDir = rootDir;
_providers = new Dictionary <Type, AssetProvider>();
// Register the AssetProviders.
var tableProvider = new CsvDataTableAssetProvider();
RegisterProvider(typeof(CsvDataTable <>), tableProvider);
// Register typeof(CsvDataTable) to the same instance of the type CsvDataRow<>.
// Which enables us to do things like this AssetManaget.Get<CsvDataTable>();
RegisterProvider(typeof(CsvDataTableCollection), tableProvider);
_table = tableProvider.Table;
var fingerprintJsonPath = Path.Combine(_rootDir, "fingerprint.json");
var fingerprintJson = File.ReadAllText(fingerprintJsonPath);
_fingerprint = Fingerprint.FromJson(fingerprintJson);
}
private Fingerprint DownloadFingerprint(Uri rootPath)
{
var builder = new UriBuilder(rootPath);
builder.Path = Path.Combine(builder.Path, "fingerprint.json");
var fingerprintPath = builder.Uri;
var fingerprintJson = _webClient.DownloadString(fingerprintPath);
return(Fingerprint.FromJson(fingerprintJson));
}