/// <summary>
/// Gets a collection of calendar events.
/// </summary>
/// <returns>A collection of all calendar events.</returns>
internal async Task<List<EventViewModel>> GetCalendarEventsAsync()
{
// Make sure we have a reference to the Exchange client
var exchangeClient = await AuthenticationHelper.EnsureOutlookClientCreatedAsync();
List<EventViewModel> returnResults = new List<EventViewModel>();
var eventsResults = await exchangeClient.Me.Calendar.Events.OrderBy(e => e.Start).ExecuteAsync();
foreach (IEvent calendarEvent in eventsResults.CurrentPage)
{
IEvent thisEvent = await GetEventDetailsAsync( calendarEvent.Id);
EventViewModel calendarEventModel = new EventViewModel(thisEvent);
returnResults.Add(calendarEventModel);
}
return returnResults;
}
/// <summary>
/// Gets a collection of events for today's calendar.
/// </summary>
/// <param name="hoursBefore">int. The beginning of the TimeSpan that defines which events are returned.</param>
/// <param name="hoursAfter">int. The end of the TimeSpan that defines which events are returned.</param>
/// <returns>A collection of all calendar events found for the specified time range.</returns>
internal async Task<List<EventViewModel>> GetTodaysCalendar(int hoursBefore, int hoursAfter)
{
// Make sure we have a reference to the calendar client
var calendarClient = await AuthenticationHelper.EnsureCalendarClientCreatedAsync();
List<EventViewModel> returnResults = new List<EventViewModel>();
// Obtain calendar event data for start times from the range of 6 hours
// before now to 6 hours after now. Get the first 48 calender events in the range.
// This results in a call to the service.
var eventsResults = await (from i in calendarClient.Me.Calendar.Events
where i.Start >= DateTimeOffset.Now.Subtract(new TimeSpan(hoursBefore, 0, 0)) &&
i.Start <= DateTimeOffset.Now.AddHours(hoursAfter)
select i).Take(48).ExecuteAsync();
var events = eventsResults.CurrentPage.OrderBy(e => e.Start);
foreach (IEvent calendarEvent in events)
{
IEvent thisEvent = await GetEventDetailsAsync( calendarEvent.Id);
EventViewModel calendarEventModel = new EventViewModel(thisEvent);
returnResults.Add(calendarEventModel);
}
return returnResults;
}
/// <summary>
/// Creates a new event and adds it to the collection.
/// </summary>
/// <remarks>The event is created locally.</remarks>
async void ExecuteNewEventCommandAsync()
{
var aadClient = await AuthenticationHelper.GetGraphClientAsync();
var currentUser = await (aadClient.Users
.Where(i => i.ObjectId == AuthenticationHelper.LoggedInUser)
.ExecuteSingleAsync());
var newEvent = new EventViewModel(currentUser.Mail);
this.Events.Add(newEvent);
this.SelectedEvent = newEvent;
LoggingViewModel.Instance.Information = "Click the Update Event button and we'll save the new event to your calendar";
}
/// <summary>
/// Creates a new event and adds it to the collection.
/// </summary>
/// <remarks>The event is created locally.</remarks>
async void ExecuteNewEventCommandAsync()
{
var aadClient = await AuthenticationHelper.EnsureAadGraphClientCreatedAsync();
Microsoft.Office365.ActiveDirectory.IUser currentUser = await (aadClient.Users
.Where(i => i.ObjectId == AuthenticationHelper.LoggedInUser)
.ExecuteSingleAsync());
var newEvent = new EventViewModel(currentUser.Mail);
this.TodaysEvents.Add(newEvent);
this.SelectedEvent = newEvent;
LoggingViewModel.Instance.Information = "Click the Update Event button and we'll save the new event to your calendar";
}
