private async Task <bool> SaveTimetableBackup(TimetableObjectsList timetableObjects)
{
try {
StorageFile saveFile = await ApplicationData.Current.LocalFolder.CreateFileAsync(filename, CreationCollisionOption.ReplaceExisting);
using (Stream writeStream = await saveFile.OpenStreamForWriteAsync()) {
DataContractSerializer serializer = new DataContractSerializer(typeof(TimetableObjectsList));
serializer.WriteObject(writeStream, timetableObjects);
await writeStream.FlushAsync();
writeStream.Dispose();
}
return(true);
}
catch (Exception e) {
throw new Exception("Unable to save the timetable", e);
}
}
/*
* Get the timetable asynchronous from the server.
* Returns an empty list of objects if anything fails.
*/
public async Task <TimetableObjectsList> GetTimetable(string stgJhr, string stg, string stgGrp)
{
// TODO: Regex zum Prüfen der Werte
if (stgJhr != null && stg != null && stgGrp != null && !stgJhr.Equals("") && !stg.Equals("") && !stgGrp.Equals(""))
{
try {
string requestData = WebUtility.UrlEncode("StgJhr") + "=" + WebUtility.UrlEncode(stgJhr) + "&"
+ WebUtility.UrlEncode("Stg") + "=" + WebUtility.UrlEncode(stg) + "&"
+ WebUtility.UrlEncode("StgGrp") + "=" + WebUtility.UrlEncode(stgGrp);
Uri uri = new Uri("https://www2.htw-dresden.de/~app/API/GetTimetable.php?" + requestData);
HttpClient client = new HttpClient();
HttpResponseMessage response = await client.GetAsync(uri);
string content = await response.Content.ReadAsStringAsync();
Debug.WriteLine(content);
List <TimetableObject> timetableObjects = JsonConvert.DeserializeObject <List <TimetableObject> >(content);
TimetableObjectsList timetableObjectsList = new TimetableObjectsList();
timetableObjectsList.timetableObjects = timetableObjects;
timetableObjectsList.timestamp = DateTime.Now;
// backup timetable if connection fails the next time
await SaveTimetableBackup(timetableObjectsList);
return(timetableObjectsList);
}
catch (Exception e) {
Debug.WriteLine(e.ToString());
return(null);
}
}
else
{
return(null);
}
}
public static async Task <XmlDocument> GetNextLessonXml()
{
// don´t download a new timetable, use the stored one
TimetableObjectsList timetableObjects = await LoadTimetableBackup();
if (timetableObjects != null)
{
// find the next lesson
TimetableObject nextLesson = null;
DateTime now = DateTime.Now;
DateTimeFormatInfo dtfi = DateTimeFormatInfo.CurrentInfo;
Calendar cal = dtfi.Calendar;
int weekNum = cal.GetWeekOfYear(now, dtfi.CalendarWeekRule, dtfi.FirstDayOfWeek);
int weekParity = (weekNum % 2) == 0 ? 2 : 1; // 1 odd, 2 even
// create sorted list of lessons
Dictionary <String, int> timeToIntDictionary = new Dictionary <String, int>();
timeToIntDictionary.Add("07:30:00", 0);
timeToIntDictionary.Add("09:20:00", 1);
timeToIntDictionary.Add("11:10:00", 2);
timeToIntDictionary.Add("13:20:00", 3);
timeToIntDictionary.Add("15:10:00", 4);
timeToIntDictionary.Add("17:00:00", 5);
timeToIntDictionary.Add("18:40:00", 6);
timeToIntDictionary.Add("20:20:00", 7);
Dictionary <int, Dictionary <int, TimetableObject> > thisWeekDictionary = new Dictionary <int, Dictionary <int, TimetableObject> >();
Dictionary <int, Dictionary <int, TimetableObject> > nextWeekDictionary = new Dictionary <int, Dictionary <int, TimetableObject> >();
for (int i = 0; i < 7; i++)
{
Dictionary <int, TimetableObject> dayDictionary = new Dictionary <int, TimetableObject>();
Dictionary <int, TimetableObject> dayDictionaryNext = new Dictionary <int, TimetableObject>();
for (int k = 0; k < 8; k++)
{
dayDictionary.Add(k, null);
dayDictionaryNext.Add(k, null);
}
thisWeekDictionary.Add(i, dayDictionary);
nextWeekDictionary.Add(i, dayDictionaryNext);
}
foreach (TimetableObject timetableObject in timetableObjects.timetableObjects)
{
if (timetableObject.Week == 0)
{
//add to this and next week
thisWeekDictionary[timetableObject.Day][timeToIntDictionary[timetableObject.BeginTime]] = timetableObject;
nextWeekDictionary[timetableObject.Day][timeToIntDictionary[timetableObject.BeginTime]] = timetableObject;
}
else if (timetableObject.Week == weekParity)
{
// add to this week only
thisWeekDictionary[timetableObject.Day][timeToIntDictionary[timetableObject.BeginTime]] = timetableObject;
}
else
{
// add to next week only
nextWeekDictionary[timetableObject.Day][timeToIntDictionary[timetableObject.BeginTime]] = timetableObject;
}
}
// search through the list
int nextLessonInt = 8; // 8 = after last lesson
if (now < new DateTime(now.Year, now.Month, now.Day, 7, 30, 0, DateTimeKind.Local))
{
nextLessonInt = 0;
}
else if (now < new DateTime(now.Year, now.Month, now.Day, 9, 20, 0, DateTimeKind.Local))
{
nextLessonInt = 1;
}
else if (now < new DateTime(now.Year, now.Month, now.Day, 11, 10, 0, DateTimeKind.Local))
{
nextLessonInt = 2;
}
else if (now < new DateTime(now.Year, now.Month, now.Day, 13, 20, 0, DateTimeKind.Local))
{
nextLessonInt = 3;
}
else if (now < new DateTime(now.Year, now.Month, now.Day, 15, 10, 0, DateTimeKind.Local))
{
nextLessonInt = 4;
}
else if (now < new DateTime(now.Year, now.Month, now.Day, 17, 00, 0, DateTimeKind.Local))
{
nextLessonInt = 5;
}
else if (now < new DateTime(now.Year, now.Month, now.Day, 18, 40, 0, DateTimeKind.Local))
{
nextLessonInt = 6;
}
else if (now < new DateTime(now.Year, now.Month, now.Day, 20, 20, 0, DateTimeKind.Local))
{
nextLessonInt = 7;
}
// is there a lesson on this day
while (nextLesson == null && nextLessonInt < 8)
{
nextLesson = thisWeekDictionary[(int)now.DayOfWeek][nextLessonInt];
nextLessonInt++;
}
// if there is nothing on this day get next lesson in this week
int j = 1;
while (nextLesson == null && ((int)now.DayOfWeek) + j < 7)
{
nextLessonInt = 0;
while (nextLesson == null && nextLessonInt < 8)
{
nextLesson = thisWeekDictionary[(int)now.DayOfWeek + j][nextLessonInt];
nextLessonInt++;
}
j++;
}
// if there is nothing in this week get next week
int dayOfWeek = 0;
while (nextLesson == null && dayOfWeek < 7)
{
nextLessonInt = 0;
while (nextLesson == null && nextLessonInt < 8)
{
nextLesson = nextWeekDictionary[dayOfWeek][nextLessonInt];
nextLessonInt++;
}
dayOfWeek++;
}
// if it found nothing yet the timetable is totally empty...
XmlDocument doc = null;
if (nextLesson != null)
{
// build the tile
TileBindingContentAdaptive bindingContent = new TileBindingContentAdaptive()
{
Children =
{
new TileText()
{
Text = "Nächste Stunde",
Style = TileTextStyle.CaptionSubtle
},
new TileText()
{
Text = nextLesson.LessonTag + " (" + nextLesson.Type + ")"
},
new TileText()
{
Text = nextLesson.Rooms[0] + (nextLesson.Rooms.Count > 1 ? " u. a." : "")
},
new TileText()
{
Text = nextLesson.BeginTime.Remove(5, 3) + " Uhr"
}
}
};
TileContent content = new TileContent()
{
Visual = new TileVisual()
{
TileMedium = new TileBinding()
{
Branding = TileBranding.Name,
Content = bindingContent
},
TileLarge = new TileBinding()
{
Branding = TileBranding.Name,
Content = bindingContent
},
TileWide = new TileBinding()
{
Branding = TileBranding.Name,
Content = bindingContent
}
}
};
doc = content.GetXml();
}
return(doc);
}
return(null);
}
async Task LoadTimetables()
{
timetableModel = TimetableModel.GetInstance();
timetableUtils = new TimetableUtils();
settingsModel = SettingsModel.GetInstance();
TimetableObjectsList timetableObjects = await timetableModel.GetTimetable(settingsModel.StgJhr, settingsModel.Stg, settingsModel.StgGrp);
if (timetableObjects != null)
{
// clear the timetables
timetableUtils.clearTimetable(timetableThisWeek);
timetableUtils.clearTimetable(timetableNextWeek);
Lessons = timetableObjects.timetableObjects;
UpdateLiveTile();
/*find out if current week is even or odd*/
int evenOdd = timetableUtils.isCurrentWeekEvenOrOdd();
foreach (TimetableObject timetableObject in Lessons)
{
int[] row = timetableUtils.getRowForTable(timetableObject);
if (row[0] != -1 && row[1] != -1)
{
for (int currentRow = row[0]; currentRow <= row[1]; currentRow++)
{
// prepare the button for this lesson
TimetableItem timetableItem = new TimetableItem();
string room = "";
if (timetableObject.Rooms.Count > 1)
{
room = timetableObject.Rooms[0] + " ...";
}
else
{
room = timetableObject.Rooms[0];
}
timetableItem.TextBlock.Text = timetableObject.LessonTag + "\n"
+ timetableObject.Type + "\n"
+ room;
Grid.SetColumn(timetableItem, timetableObject.Day);
Grid.SetRow(timetableItem, currentRow);
// switch for the week number
switch (timetableObject.Week)
{
/*lesson takes place every week*/
case 0: {
timetableUtils.addLessonToWeek(timetableThisWeek, currentRow, timetableItem);
// clone the button
TimetableItem clone = new TimetableItem();
Grid.SetColumn(clone, timetableObject.Day);
Grid.SetRow(clone, currentRow);
clone.TextBlock.Text = timetableItem.TextBlock.Text;
timetableUtils.addLessonToWeek(timetableNextWeek, currentRow, clone);
break;
}
/*only at odd weeks*/
case 1: {
/*if current week is even add it to next week*/
if (evenOdd == 0)
{
timetableUtils.addLessonToWeek(timetableNextWeek, currentRow, timetableItem);
}
else
{
timetableUtils.addLessonToWeek(timetableThisWeek, currentRow, timetableItem);
}
break;
}
/*only at even weeks*/
case 2: {
/*if current week is even add it to this week*/
if (evenOdd == 0)
{
timetableUtils.addLessonToWeek(timetableThisWeek, currentRow, timetableItem);
}
else
{
timetableUtils.addLessonToWeek(timetableNextWeek, currentRow, timetableItem);
}
break;
}
default: {
break;
}
}
}
}
}
// update timestamp
timestampThisWeek.Text = timestampNextWeek.Text = "Stand: " + timetableObjects.timestamp.ToLocalTime().ToString();
}
}