public async Task <Document[]> HandleUserInput(string userIdentity, Protocol.Message input, UserContext userContext, CancellationToken cancellationToken)
{
var userSemaphore = await _userSemaphoreService.GetSemaphoreByUserIdentity(userIdentity);
try
{
await userSemaphore.WaitAsync();
var flow = await _botFlowService.GetBotFlow();
userContext = userContext ?? await UserContext.GetOrCreateAsync(userIdentity, cancellationToken);
var state = _stateMachineService.GetCurrentUserState(userContext, flow);
var oldInput = state.InteractionActions.Single(x => x.Input != default).Input;
if (!string.IsNullOrEmpty(oldInput.Variable))
{
userContext.SetVariable(oldInput.Variable, input);
}
userContext.SetVariable("input", input);
userContext.PopulateNlpResponse(input.ToString(), _nlpProvider);
var documents = new List <Document>();
do
{
state = await _stateMachineService.GetNextUserStateAsync(userContext, state, flow);
await _customActionService.ExecuteCustomActions(state.EnteringCustomActions, userContext);
state.InteractionActions.Where(x => x.Input == default).ForEach(async x =>
{
var content = x.Action.Message.Content;
content = await _variableService.ReplaceVariablesInDocumentAsync(content, userContext);
documents.Add(content);
});
await _customActionService.ExecuteCustomActions(state.LeavingCustomActions, userContext);
} while (!state.InteractionActions.Any(x => x.Input?.Bypass == false));
userContext.StateId = state.Id;
await userContext.AddOrUpdateAsync(cancellationToken);
return(documents.ToArray());
}
finally
{
userSemaphore.Release();
}
}