public bool UpdateIfNeeded(Day day, Action <Day, IEnumerable <Event> > onUpdate, Action <Exception> onError)
{
Week week = day.Week;
if (UpdateNeeded(week))
{
Update(week, events => onUpdate(day, events), onError);
return(true);
}
return(false);
}
public IOrderedEnumerable <Event> GetEvents(Day day, Action <Day> onUpdateStart, Action <Day, IEnumerable <Event> > onUpdateFinish, Action <Exception> onError)
{
var currentDayEvents = new List <Event>();
foreach (var ev in _events)
{
if (ev.StartsDuring(day))
{
currentDayEvents.Add(ev);
}
}
Week week = day.Week;
if (UpdateNeeded(week))
{
Utils.RunOnUiThread(onUpdateStart, day);
Update(week, events => onUpdateFinish(day, events), onError);
}
return(currentDayEvents.OrderBy(ev => ev));
}
protected override IEnumerable <Event> DownloadEvents(Week week)
{
var events = new List <Event>();
var svc = new TimetableService();
var academicYear = week.Number >= 36 ? week.Year : week.Year - 1;
var firstWeek = new Week(academicYear, 36);
var academicWeek = (int)Math.Round((week.StartTime - firstWeek.StartTime).TotalDays / 7);
var activityUri = new Uri("GetActivitiesByStudent?id=" + Student.Id +
"&week=" + academicWeek + "&acyear=" + academicYear,
UriKind.Relative);
var activityResponse = svc.Execute <TTActivity>(activityUri);
var locationStaffRequests = new List <DataServiceRequest>();
if (activityResponse != null)
{
foreach (TTActivity tta in activityResponse)
{
var startTime = week.StartTime.AddDays(Math.Log(tta.Day) / Math.Log(2)).AddHours(tta.StartTime);
var duration = TimeSpan.FromHours(tta.Duration);
var course = Student.Courses.FirstOrDefault(c => tta.Name.Contains(c.CatalogNumber));
// If we don't know about this course, the student information needs to be updated
if (course == null)
{
Student.Update();
course = Student.Courses.FirstOrDefault(c => tta.Name.Contains(c.CatalogNumber));
}
var groups = new List <Group>();
if (course != null)
{
Group group;
if (Student.Groups.TryGetValue(course, out group) && tta.Groups.Contains(group.Identifier))
{
groups.Add(group);
}
}
if (course == null)
{
course = new Course(0, tta.Name, tta.Description, academicYear);
}
events.Add(new Event(tta.ID, startTime, duration, course, groups, tta.ActivityType,
tta.Description, new HashSet <Location>(), new List <string>()));
locationStaffRequests.Add(new DataServiceRequest <TTLocation>(
new Uri("GetLocationsByActivity?id=" + tta.ID, UriKind.Relative)));
locationStaffRequests.Add(new DataServiceRequest <TTStaff>(
new Uri("GetStaffByActivity?id=" + tta.ID, UriKind.Relative)));
}
if (locationStaffRequests.Count > 0)
{
var locationResponses = svc.ExecuteBatch(locationStaffRequests.ToArray());
foreach (QueryOperationResponse response in locationResponses)
{
int activityId = int.Parse(response.Query.RequestUri.ToString().Split('=').Last());
var ev = events.Find(e => e.Id == activityId);
if (response.Query.ElementType == typeof(TTLocation))
{
foreach (TTLocation ttl in response)
{
ev.Locations.Add(new Location(ttl.ID, ttl.Name, ttl.InfoURL));
}
}
else if (response.Query.ElementType == typeof(TTStaff))
{
foreach (TTStaff tts in response)
{
ev.Staff.Add(tts.Name);
}
}
}
}
}
return(events);
}
protected abstract IEnumerable <Event> DownloadEvents(Week week);
public bool UpdateNeeded(Week week)
{
return(!UpdateLog.ContainsKey(week) || DateTime.UtcNow - UpdateLog[week] > UpdateInterval);
}
