/// <summary>
/// Get the list of next available, free slots.
/// </summary>
/// <param name="numberOfSlots">Number of next free slot to return. Defaults to 3.</param>
/// <param name="cancellationToken" >(Optional) A <see cref="CancellationToken"/> that can be used by other objects
/// or threads to receive notice of cancellation.</param>
/// <returns>A list of free slots.</returns>
internal async Task <IEnumerable <string> > GetNextFreeSlotsAsync(int numberOfSlots = 3, CancellationToken cancellationToken = default(CancellationToken))
{
var notAvailable = await GetAsync <NotAvailableDatesAndTimes>("/api/reservations/notavailabledates", cancellationToken);
var freeslots = new List <string>();
var dateIterator = DateTime.Today;
while (freeslots.Count < numberOfSlots && dateIterator < DateTime.Today.AddYears(1))
{
foreach (var slot in Constants.Slots)
{
var slotStartTime = new DateTime(dateIterator.Year, dateIterator.Month, dateIterator.Day, slot.StartTime, 0, 0);
var slotEndTime = new DateTime(dateIterator.Year, dateIterator.Month, dateIterator.Day, slot.EndTime, 0, 0);
if (!notAvailable.Times.Contains(slotStartTime) && freeslots.Count <= numberOfSlots && slotStartTime >= DateTime.Now)
{
var timex = TimexProperty.FromDateTime(slotStartTime);
freeslots.Add($"{timex.ToNaturalLanguage(DateTime.Now)}-{slotEndTime.ToString("htt")}");
}
}
dateIterator = dateIterator.AddDays(1);
}
return(freeslots);
}
/// <summary>
/// Converts the DateTime object to natural languge with the given reference point.
/// </summary>
/// <param name="dateTime">the DateTime object.</param>
/// <param name="referenceDate">(Optional) Reference point. Defaults to DateTime.Now.</param>
/// <returns>
/// Natural languge string of the DateTime.
/// </returns>
public static string ToNaturalLanguage(this DateTime dateTime, DateTime?referenceDate = null)
{
if (referenceDate == null)
{
referenceDate = DateTime.Now;
}
var timex = TimexProperty.FromDateTime(dateTime);
return(timex.ToNaturalLanguage(referenceDate.Value));
}
public void DataTypes_Timex_FromDateTime()
{
Assert.AreEqual("2017-12-05T23:57:35", TimexProperty.FromDateTime(new System.DateTime(2017, 12, 5, 23, 57, 35)).TimexValue);
}
private async Task <DialogTurnResult> RecommendSlotsStepAsync(WaterfallStepContext step, CancellationToken cancellationToken)
{
var state = await _stateAccessor.GetAsync(step.Context, cancellationToken : cancellationToken);
if (state.Services.Count == 0)
{
state.Services = ParseServiceSelectionCardResponse(step.Context.Activity);
await _stateAccessor.SetAsync(step.Context, state, cancellationToken);
}
// Check whether we already know something about the date.
if (state.StartDate != null)
{
return(await step.NextAsync(cancellationToken : cancellationToken));
}
var recommendedSlots = new List <DateTime>();
try
{
var api = new CarwashService(step, cancellationToken);
var notAvailable = await api.GetNotAvailableDatesAndTimesAsync(cancellationToken);
recommendedSlots = GetRecommendedSlots(notAvailable);
}
catch (AuthenticationException)
{
await step.Context.SendActivityAsync(AuthDialog.NotAuthenticatedMessage, cancellationToken : cancellationToken);
return(await step.ClearStateAndEndDialogAsync(_stateAccessor, cancellationToken : cancellationToken));
}
catch (Exception e)
{
_telemetryClient.TrackException(e);
await step.Context.SendActivityAsync(e.Message, cancellationToken : cancellationToken);
return(await step.ClearStateAndEndDialogAsync(_stateAccessor, cancellationToken : cancellationToken));
}
// Save recommendations to state
state.RecommendedSlots = recommendedSlots;
await _stateAccessor.SetAsync(step.Context, state, cancellationToken);
var choices = new List <Choice>();
foreach (var slot in recommendedSlots)
{
var timex = TimexProperty.FromDateTime(slot);
choices.Add(new Choice(timex.ToNaturalLanguage(DateTime.Now)));
}
return(await step.PromptAsync(
RecommendedSlotsPromptName,
new PromptOptions
{
Prompt = MessageFactory.Text("Can I recommend you one of these slots? If you want to choose something else, just type skip."),
Choices = choices,
},
cancellationToken));
}