/// <summary>
/// Creates an instance of the <see cref="Manifest"/> class based on
/// the provided JSON string.
/// </summary>
/// <param name="json">A string of JSON in the correct format.</param>
/// <param name="dependencies">The host provided dependencies.</param>
/// <returns></returns>
internal static Manifest FromJson(string json, IDependencies dependencies)
{
try
{
LibraryIdToNameAndVersionConverter.Instance.EnsureInitialized(dependencies);
ManifestOnDisk manifestOnDisk = JsonConvert.DeserializeObject <ManifestOnDisk>(json);
var manifestConverter = new ManifestToFileConverter();
Manifest manifest = manifestConverter.ConvertToManifest(manifestOnDisk, dependencies);
manifest._hostInteraction = dependencies.GetHostInteractions();
return(manifest);
}
catch (Exception)
{
return(null);
}
}
/// <summary>
/// Saves the manifest file to disk.
/// </summary>
/// <param name="fileName">The absolute file path to save the <see cref="Manifest"/> to.</param>
/// <param name="cancellationToken">A token that allows for cancellation of the operation.</param>
/// <returns></returns>
public async Task SaveAsync(string fileName, CancellationToken cancellationToken)
{
var settings = new JsonSerializerSettings
{
Formatting = Formatting.Indented,
NullValueHandling = NullValueHandling.Ignore,
};
foreach (ILibraryInstallationState library in _libraries)
{
if (library is LibraryInstallationState state)
{
if (state.IsUsingDefaultDestination)
{
state.DestinationPath = null;
}
if (state.IsUsingDefaultProvider)
{
state.ProviderId = null;
}
}
}
ManifestOnDisk manifestOnDisk = new ManifestToFileConverter().ConvertToManifestOnDisk(this);
string json = JsonConvert.SerializeObject(manifestOnDisk, settings);
UpdateLibraryProviderAndDestination(this);
byte[] buffer = Encoding.UTF8.GetBytes(json);
using (FileStream writer = File.Create(fileName, 4096, FileOptions.Asynchronous))
{
await writer.WriteAsync(buffer, 0, buffer.Length, cancellationToken).ConfigureAwait(false);
}
}
