/// <summary>
/// The JourneyRequest has completed its web request. Extract the departure time for the first journey and update the saved
/// departure time if it has changed.
/// If there was a network problem or the request was cancelled then leave the saved departure time as it is.
/// If no journeys were found then leave the saved departure time as it is.
/// </summary>
/// <param name="sender"></param>
/// <param name="args"></param>
private void JourneysAvailable(object sender, JourneyRequest.JourneysAvailableArgs args)
{
if (args.JourneysAvailable == true)
{
// Extract the next departure time from the returned list and report any changes
ReportNextDepartureChanges.ReportTimeChanges(MarkJourneyDateChanges(trainJourneyRequest.Journeys, requestDate));
}
else if (args.NetworkProblem == true)
{
// If there has been a network problem then mark the stored departure time as suspect
ReportNextDepartureChanges.ReportSuspectStateChanges(true);
}
else if (args.RequestCancelled == true)
{
// If the request has been cancelled don't update the stored value last retrieved
}
else
{
// No journeys have been retieved then mark the next departure value as suspect
ReportNextDepartureChanges.ReportSuspectStateChanges(true);
}
}
/// <summary>
/// The JourneyRequest has completed its web request.
/// If there was a network problem or the request was cancelled then leave the current set of journeys as they are.
/// If some journeys were found and this was a new request or an update then replace the current request with the new results.
/// If this was a request for more journeys then add the returned journeys to the existing set.
/// If no journeys were found then clear the existing results.
/// </summary>
/// <param name="sender"></param>
/// <param name="args"></param>
private void JourneysAvailable(object sender, JourneyRequest.JourneysAvailableArgs args)
{
if (args.JourneysAvailable == true)
{
// Some new journeys have been received. If this is a new request then any existing entries can now be cleared.
// If this is an update request, and it is the first reply received for the update then also clear the existing entries
if ((currentRequest == RequestType.NewRequest) || ((currentRequest == RequestType.Update) && (updateCount == 0)))
{
retrievedJourneys.Journeys.Clear();
}
// Add the new entries to the existing journeys
// First of all check that the first entry of the new entries is not the same as the last entry of the old entries
if (((retrievedJourneys.Journeys.Count > 0) && (trainJourneyRequest.Journeys.Count > 0)) &&
(retrievedJourneys.Journeys[retrievedJourneys.Journeys.Count - 1].DepartureDateTime == trainJourneyRequest.Journeys[0].DepartureDateTime))
{
// Remove the first entry
trainJourneyRequest.Journeys.RemoveAt(0);
}
retrievedJourneys.Journeys.AddRange(MarkJourneyDateChanges(trainJourneyRequest.Journeys, requestDate));
// If this is an update request check if sufficient journeys have been obtained
if (currentRequest == RequestType.Update)
{
// Report the results back just to let the user know that some results have been obtained
JourneyResponse?.JourneysAvailable(retrievedJourneys);
updateCount = retrievedJourneys.Journeys.Count;
if (updateCount >= updateTarget)
{
// Request finished
JourneyResponse?.JourneyRequestComplete(false, false);
currentRequest = RequestType.Idle;
}
else
{
// Make the request for one minute from the last time
MakeRequestAfterSpecifiedTime(retrievedJourneys.Journeys[retrievedJourneys.Journeys.Count - 1].DepartureDateTime);
}
}
else
{
// Report back
JourneyResponse?.JourneysAvailable(retrievedJourneys);
// Extract the next departure time from the returned list and report any changes
ReportNextDepartureChanges.ReportTimeChanges(retrievedJourneys.Journeys);
// Request finished
JourneyResponse?.JourneyRequestComplete(false, false);
currentRequest = RequestType.Idle;
}
}
else if (args.NetworkProblem == true)
{
// Update the next departure time status
ReportNextDepartureChanges.ReportSuspectStateChanges(true);
JourneyResponse?.JourneyRequestComplete(true, false);
currentRequest = RequestType.Idle;
}
else if (args.RequestCancelled == true)
{
JourneyResponse?.JourneyRequestComplete(false, false);
currentRequest = RequestType.Idle;
}
else
{
ClearJourneys();
// Update the next departure time status
ReportNextDepartureChanges.ReportSuspectStateChanges(true);
JourneyResponse?.JourneyRequestComplete(false, true);
currentRequest = RequestType.Idle;
}
}