public void Shutdown()
{
if (_channel != null)
{
_channel.ShutdownAsync();
_requestStream = null;
_responseStream = null;
_assistant = null;
}
}
public async Task AssistCommand(CommandContext ctx, [RemainingText] string input)
{
var secrets = new ClientSecrets
{
ClientId = ClientId,
ClientSecret = ClientSecret
};
// check if already authorized, else authorize
if (UserCredentials == null)
{
UserCredentials = await Authorize(secrets);
}
// create the request
var request = new AssistRequest();
request.Config = CreateConfig("en-US");
request.Config.TextQuery = input;
var channel = GrpcChannel.ForAddress(Endpoint, new GrpcChannelOptions
{
Credentials = UserCredentials.ToChannelCredentials()
});
var client = new EmbeddedAssistant.EmbeddedAssistantClient(channel);
var assist = client.Assist();
// send the gRPC request to google assistant
await assist.RequestStream.WriteAsync(request);
// first element is the response without audio
await assist.ResponseStream.MoveNext(CancellationToken.None);
var response = assist.ResponseStream.Current;
// read audio stream
var audioStream = new MemoryStream();
while (await assist.ResponseStream.MoveNext(CancellationToken.None))
{
var current = assist.ResponseStream.Current;
current.AudioOut.AudioData.WriteTo(audioStream);
}
audioStream.Position = 0;
await ctx.RespondWithFileAsync(audioStream, file_name : "response.ogg", content : response.DialogStateOut?.SupplementalDisplayText);
audioStream.Dispose();
}
public void UpdateCredentials(OAuthCredentials oAuthCredentials)
{
TokenResponse responseToken = new TokenResponse()
{
AccessToken = oAuthCredentials.access_token,
ExpiresInSeconds = oAuthCredentials.expires_in,
RefreshToken = oAuthCredentials.refresh_token,
Scope = authenticationConf.scope,
TokenType = oAuthCredentials.token_type,
};
credential = new UserCredential(googleAuthFlow, "", responseToken);
channel = new Channel(assistantConf.assistantApiEndpoint, 443, credential.ToChannelCredentials());
embeddedAssistantClient = new EmbeddedAssistant.EmbeddedAssistantClient(channel);
}
public void InitAssistantForUser(ChannelCredentials channelCreds)
{
_channel = new Channel(Const.AssistantEndpoint, channelCreds);
_assistant = new EmbeddedAssistant.EmbeddedAssistantClient(_channel);
}
