private static async Task <BotConversation> GetConversationByUserId(string userId)
{
// TODO: extract this and inject an instance of IBotConversationProvider
await DocumentClient.GetDocumentCollectionAsync();
BotConversation conversation = await DocumentClient.GetItemAsync <BotConversation>(c => c.UserId == userId);
return(conversation);
}
private static async Task PostToConversation(IncomingSms incomingSms, BotConversation conversation, ILogger log)
{
log.LogInformation($"Posting message to conversationId {conversation.ConversationId}");
dynamic from = new ExpandoObject();
from.id = incomingSms.SourceNumber;
from.name = incomingSms.SourceNumber;
from.role = null;
dynamic channelData = new ExpandoObject();
channelData.UniqueLearnerNumber = conversation.UniqueLearnerNumber;
channelData.StandardCode = conversation.StandardCode;
channelData.ApprenticeshipStartDate = conversation.ApprenticeshipStartDate;
channelData.NotifyMessage = new NotifyMessage
{
Id = incomingSms.Id,
DateReceived = incomingSms.DateReceived.ToString(CultureInfo.InvariantCulture),
DestinationNumber = incomingSms.DestinationNumber,
SourceNumber = incomingSms.SourceNumber,
Message = incomingSms.Message,
Type = "callback",
};
var messageContent = new BotConversationMessage
{
Type = "message",
From = from,
Text = incomingSms.Message,
ChannelData = channelData
};
var json = JsonConvert.SerializeObject(messageContent);
HttpContent content = new StringContent(json);
content.Headers.ContentType = new MediaTypeHeaderValue("application/json");
HttpResponseMessage postMessageTask = await DirectLineClient.PostAsync($"/v3/directline/conversations/{conversation.ConversationId}/activities", content);
if (postMessageTask.IsSuccessStatusCode)
{
string response = await postMessageTask.Content.ReadAsStringAsync();
dynamic jsonResponse = JsonConvert.DeserializeObject(response);
log.LogInformation($"Received response from Bot Client: {jsonResponse.id}");
}
else
{
var message = $"Could not post conversation to DirectLineClient. {postMessageTask.StatusCode}: {postMessageTask.ReasonPhrase}";
throw new BotConnectorException(message);
}
}
private static async Task StartNewConversation(IncomingSms incomingSms, ILogger log)
{
log.LogInformation($"Starting new conversation with {incomingSms.SourceNumber}");
var content = new StringContent(string.Empty);
var startConversationTask = await DirectLineClient.PostAsync("/v3/directline/conversations", content);
var conversation = new BotConversation();
if (startConversationTask.IsSuccessStatusCode)
{
string response = await startConversationTask.Content.ReadAsStringAsync();
dynamic jsonResponse = JsonConvert.DeserializeObject(response);
log.LogInformation($"Started new conversation with id {jsonResponse.conversationId}");
// TODO: write the conversation ID to a session log with the mobile phone number
conversation.UserId = incomingSms.SourceNumber; // TODO: [security] hash this please!
conversation.ConversationId = jsonResponse.conversationId;
conversation.UniqueLearnerNumber = incomingSms.UniqueLearnerNumber;
conversation.StandardCode = incomingSms.StandardCode;
conversation.ApprenticeshipStartDate = incomingSms.ApprenticeshipStartDate;
BotConversation newSession = await DocumentClient.UpsertItemAsync(conversation);
if (newSession == null)
{
var message = $"Could not create session object for conversation id {conversation.ConversationId}";
throw new BotConnectorException(message);
}
if (incomingSms.Message != null)
{
await PostToConversation(incomingSms, conversation, log);
}
}
else
{
var message = $"Could not start new conversation with DirectLineClient. {startConversationTask.StatusCode}: {startConversationTask.ReasonPhrase}";
throw new BotConnectorException(message);
}
}
public static async Task Run(
[ServiceBusTrigger("%IncomingMessageQueueName%", Connection = "ServiceBusConnection")]
string queueMessage,
[Inject] SettingsProvider configuration,
ILogger log,
ExecutionContext context)
{
Configuration = configuration;
currentContext = context;
IncomingSms incomingSms = JsonConvert.DeserializeObject <IncomingSms>(queueMessage);
try
{
log.LogInformation($"Response received from {incomingSms.SourceNumber}, sending to bot...");
string userId = incomingSms.SourceNumber; // TODO: [security] hash me please!
// If we key this on unique survey to user then we can have different conversationId's per survey run for the same number
BotConversation conversation = await GetConversationByUserId(userId);
if (conversation == null)
{
await StartNewConversation(incomingSms, log);
}
else
{
await PostToConversation(incomingSms, conversation, log);
}
}
catch (MessageLockLostException e)
{
log.LogError($"DeliverMessageToBot MessageLockLostException [{context.FunctionName}|{context.InvocationId}]", e, e.Message);
}
catch (Exception e)
{
log.LogError($"DeliverMessageToBot ERROR: {e.Message}", e, e.Message);
DirectLineClient.CancelPendingRequests();
throw new BotConnectorException("Something went wrong when relaying the message to the bot framework", e);
}
}