public async Task<Message> SendMessage (Message message)
{
using (var client = new HttpClient ()) {
client.DefaultRequestHeaders.Accept.Clear ();
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue ("Basic", GetBase64CredentialString ());
var param = new List<KeyValuePair<string,string>> ();
param.Add (new KeyValuePair<string, string> ("input", message.Text));
if (App.ConversationId != 0) {
param.Add (new KeyValuePair<string, string> ("conversation_id", App.ConversationId.ToString ()));
param.Add (new KeyValuePair<string, string> ("client_id", App.ConversationId.ToString ()));
}
var data = await client.PostAsync (string.Format (App.DialogUrl, App.DialogId), new FormUrlEncodedContent (param)).ConfigureAwait (false);
return await HandleResponse (data);
}
}
public async Task SendMessage (string message = null)
{
Message messageItem;
if (!string.IsNullOrEmpty (message)) {
messageItem = new Message {
IsIncoming = false,
Text = message,
Status = MessageStatus.Sent,
Timestamp = DateTime.UtcNow,
};
await App.DataManager.SaveMessage (messageItem);
Messages.Add (messageItem);
} else
messageItem = new Message{ Text = "Hello!" };
var incomingMessage = await dialogService.SendMessage (messageItem);
await App.DataManager.SaveMessage (incomingMessage);
messageItem.Status = MessageStatus.Delivered;
Messages.Add (incomingMessage);
}
public Task<int> SaveMessage(Message message)
{
return db.SaveItemAsync<Message> (message);
}
private async Task<Message> HandleResponse (HttpResponseMessage response)
{
var data = await response.Content.ReadAsStringAsync ().ConfigureAwait (false);
return await Task.Run (() => {
var watsonData = JsonConvert.DeserializeObject<WatsonResponse> (data);
if (watsonData == null) {
return null;
}
App.ClientId = watsonData.ClientId;
App.ConversationId = watsonData.ConversationId;
StringBuilder msgBuilder = new StringBuilder ();
foreach (var item in watsonData.Response) {
msgBuilder.AppendLine (item);
}
var message = new Message {
Text = msgBuilder.ToString (),
Timestamp = DateTime.UtcNow,
IsIncoming = true,
Status = MessageStatus.Delivered
};
return message;
});
}