public Groups Create(int DivisionId, string name, int?ClassroomId, TimeSpans timeSpan)
{
//provera da li je ucionica slobodna u to vreme
if (ClassroomId != null)
{
this.CheckIfClassroomIsAvailable(ClassroomId.Value, timeSpan);
}
if (timeSpan != null)
{
_context.TimeSpans.Add(timeSpan);
}
_context.SaveChanges();
Groups g = new Groups
{
DivisionId = DivisionId,
Name = name,
ClassroomId = ClassroomId,
};
if (timeSpan != null)
{
g.TimeSpanId = timeSpan.TimeSpanId;
}
_context.Groups.Add(g);
_context.SaveChanges();
return(g);
}
/// <summary>
/// Proverava da li je Student slobodan u to vreme.
/// </summary>
/// <param Name="StudentId"></param>
/// <param Name="ts"></param>
/// <param Name="GroupId">Groupa ciji ce se cas izuzeti pri proveri</param>
/// <returns></returns>
public bool CheckIfAvailable(int StudentId, TimeSpans ts, int?GroupId = null)
{
List <int> Groups = _context.GroupsStudents
.Where(a => a.StudentId == StudentId &&
(GroupId == null || a.GroupId != GroupId) &&
TimeSpan.DatesOverlap(a.Group.Division.Beginning, a.Group.Division.Ending, ts.StartDate, ts.EndDate)) //provera da li raspodela kojoj grupa pripada i dalje vazi
.Select(a => a.GroupId).ToList();
var GroupsSchedulePom =
_context.Groups.Where(a => Groups.Contains(a.GroupId)).ToList();
List <TimeSpans> GroupsSchedule = GroupsSchedulePom.Where(a => a.TimeSpan != null && groupService.IsActive(a.GroupId, ts)).Select(a => a.TimeSpan).ToList();
List <int> activities =
_context.StudentsActivities.Where(a => a.StudentId == StudentId && a.Ignore != true).Select(a => a.ActivityId).ToList();
List <TimeSpans> activitiesSchedule =
_context.Activities.Where(
a => activities.Contains(a.ActivityId) || (a.GroupId != null && a.Cancelling == false && Groups.Contains(a.GroupId.Value)))
.Select(a => a.TimeSpan)
.ToList();
List <TimeSpans> schedule = GroupsSchedule.Concat(activitiesSchedule).ToList();
return(ts == null || schedule.All(timeSpan => !Server.Services.TimeSpan.Overlap(timeSpan, ts)));
}
//prebaceno je ovde zbog circular dependancy
public void UpdateGroup(int GroupId, string name, int?ClassroomId, TimeSpans TimeSpan)
{
//provera da li je ucionica slobodna u to vreme, bacice exeption ako nije
if (ClassroomId != null && TimeSpan != null)
{
groupService.CheckIfClassroomIsAvailable(ClassroomId.Value, TimeSpan, GroupId);
}
//provera da li su svi Studenti slobodni u to vreme, bacice exeption ako nisu
var studs = _context.GroupsStudents.Where(a => a.GroupId == GroupId).Select(a => a.StudentId).ToList();
this.CheckIfAvailable(TimeSpan, studs, GroupId);
Groups g = _context.Groups.First(a => a.GroupId == GroupId);
if (name != null)
{
g.Name = name;
}
if (ClassroomId != null)
{
g.ClassroomId = ClassroomId;
}
if (TimeSpan != null)
{
g.TimeSpan = TimeSpan;
}
_context.SaveChanges();
}
// provera da li studend moze biti dodan u grupu
public void TryAddToGroup(int StudentId, int GroupId)
{
//proveri da li dolazi do nekonzistentnosti raspodele
//provera da li Student vec postoji u toj grupi
var otherStuds =
_context.GroupsStudents.Where(a => a.GroupId == GroupId).Select(a => a.StudentId).ToList();
if (otherStuds.Contains(StudentId))
{
throw new InconsistentDivisionException("Student već pripada toj grupi.");
}
//proverva konzistentnost sa ostalim grupama, bacice exeption ako nije
groupService.CheckConsistencyWithOtherGroups(GroupId, new List <int>()
{
StudentId
});
//provera da li je Student slobodan u vreme kada ta grupa ima cas
TimeSpans GroupTs = _context.Groups.Where(a => a.GroupId == GroupId).Select(a => a.TimeSpan).First();
if (GroupTs != null && !CheckIfAvailable(StudentId, GroupTs))
{
string Name = GetStudentName(StudentId);
string message = "Student (" + Name + ") nije slobodan u vreme kada grupa ima cas";
message += " (" + TimeSpan.ToString(GroupTs) + " ).";
throw new InconsistentDivisionException(message);
}
}
public void AddActivity(int StudentId, int?GroupId, int?ClassroomId, TimeSpans TimeSpan, string Place,
string Title, string content)
{
_context.TimeSpans.Add(TimeSpan);
Activities act = new Activities
{
GroupId = GroupId,
TimeSpanId = TimeSpan.TimeSpanId,
ClassroomId = ClassroomId,
Place = Place,
Title = Title,
ActivityContent = content,
Cancelling = false,
};
_context.Activities.Add(act);
StudentsActivities sa = new StudentsActivities
{
StudentId = StudentId,
ActivityId = act.ActivityId,
Ignore = false,
Alert = false
};
_context.StudentsActivities.Add(sa);
_context.SaveChanges();
}
//pretvara iz timespana ili formata[dayOfWeek, Period, timeStart, timeEnd] u timespan
public static TimeSpans getTimeSpan(GroupsController.TimeSpanBinding bind)
{
if (bind == null)
{
return(null);
}
TimeSpans ts = new TimeSpans();
if (bind.Period == 0)
{
ts.Period = bind.Period;
ts.StartDate = bind.StartDate.Value;
ts.EndDate = bind.EndDate.Value;
return(ts);
}
else
{
//nedelja je 0
if (bind.Period == 0)
{
bind.Period = 7;
}
DateTime mon = DateTime.Now.StartOfWeek();
ts.StartDate = mon.AddDays(bind.DayOfWeek.Value - 1);
ts.EndDate = ts.StartDate;
ts.StartDate = ts.StartDate.Add(convertHM(bind.TimeStart));
ts.EndDate = ts.EndDate.Add(convertHM(bind.TimeEnd));
ts.Period = bind.Period;
}
return(ts);
}
public static bool Overlap(TimeSpans paramA, TimeSpans paramB)
{
if (paramA == null || paramB == null)
{
return(false);
}
//moram da kopiram jer se prenosi po referenci
TimeSpans a = Copy(paramA);
TimeSpans b = Copy(paramB);
if (a.Period == null && b.Period == null)
{
return(DatesOverlap(a.StartDate, a.EndDate, b.StartDate, b.EndDate));
}
if (a.Period != null && a.Period > 0)
{
a.StartDate = a.StartDate.DayOfReferencedWeek(b.StartDate, a.Period.Value);
a.EndDate = a.EndDate.DayOfReferencedWeek(b.EndDate, a.Period.Value);
}
if (b.Period != null && b.Period > 0)
{
b.StartDate = b.StartDate.DayOfReferencedWeek(a.StartDate, b.Period.Value);
b.EndDate = b.EndDate.DayOfReferencedWeek(a.EndDate, b.Period.Value);
}
return(TimeSpanOverlap(a, b));
}
// moze lepse da se organizuje funkcija
public static string ToString(TimeSpans ts)
{
var ret = "";
if (ts == null)
{
return("");
}
if (ts.Period != 1)
{
ret += ts.StartDate.ToStr();
if (ts.StartDate.Date != ts.EndDate.Date)
{
ret += " - " + ts.EndDate.ToStr();
}
else
{
ret += " - " + ts.EndDate.ToString("HH:mm");
}
return(ret);
}
else
{
ret += ts.StartDate.DayOfWeek.ToStr() + " ";
ret += ts.StartDate.ToString("HH:mm");
ret += " - " + ts.EndDate.ToString("HH:mm");
}
return(ret);
}
//GroupId je grupa ciji cas treba zanemariti (grupa koja menja ucionicu
public bool CheckIfAvailable(int ClassroomId, TimeSpans ts, int?GroupId = null)
{
List <TimeSpans> groupsSchedule = _context.Groups
.Where(a => a.ClassroomId == ClassroomId &&
(GroupId == null || a.GroupId != GroupId) && // da ne uzme u obzir trenutni ts grupe, posto se ionako menja
TimeSpan.DatesOverlap(a.Division.Beginning, a.Division.Ending, ts.StartDate, ts.EndDate) &&
groupsService.IsActive(a.GroupId, ts)) //provera da li raspodela kojoj grupa pripada i dalje vazi_
.Select(a => a.TimeSpan).ToList();
List <TimeSpans> activitiesSchedule =
_context.Activities.Where(a => a.ClassroomId == ClassroomId &&
!groupsService.IsStudentActivity(a.ActivityId))
.Select(a => a.TimeSpan).ToList();
List <TimeSpans> schedule = groupsSchedule.Concat(activitiesSchedule).ToList();
if (schedule.Any(TimeSpan => Services.TimeSpan.Overlap(TimeSpan, ts)))
{
string ClassroomNumber = _context.Classrooms.First(a => a.ClassroomId == ClassroomId).Number;
throw new InconsistentDivisionException("Ucionica (" + ClassroomNumber + ") nije slobodna u to vreme (" + TimeSpan.ToString(ts) + ").");
}
;
return(true);
}
public TimeSpan ShouldReturnMaximumTimeSpan(TimeSpan first, TimeSpan second)
{
// when
var max = TimeSpans.Max(first, second);
// then
return(max);
}
public TimeSpan ShouldReturnMinimumTimeSpan(TimeSpan first, TimeSpan second)
{
// when
var min = TimeSpans.Min(first, second);
// then
return(min);
}
public TimeSpan ShouldReturnAbsoluteTimeSpan(TimeSpan timespan)
{
// when
var abs = TimeSpans.Abs(timespan);
// then
return(abs);
}
public void SwitchTimeSpans(TimeSpans span)
{
AddTimeSpanButton.Trigger();
TimeManager.FlashPause();
ViewButton.SelectItem(TimeSpanMenuItemDictionary[span]);
//CurrentViewType = viewType;
}
public bool IsActive(int GroupId, TimeSpans tsNow)
{
bool canceled = _context.Activities.Any(ac =>
!ac.StudentsActivities.Any() && // nece ako se ovde direktno ispita
ac.GroupId == GroupId && ac.Cancelling == true &&
TimeSpan.TimeSpanOverlap(ac.TimeSpan, tsNow));
return(!canceled);
}
public static TimeSpans Copy(TimeSpans a)
{
return(new TimeSpans
{
StartDate = a.StartDate,
EndDate = a.EndDate,
Period = a.Period
});
}
public IEnumerable GetSchedule(int assistantID, int weeksFromNow = 0)
{
DateTime now = DateTime.Now.AddDays(7 * weeksFromNow);
TimeSpans tsNow = new TimeSpans
{
StartDate = now.StartOfWeek(),
EndDate = now.EndOfWeek()
};
List <int> groups = _context.Groups
.Where(a => a.AssistantId == assistantID &&
TimeSpan.DatesOverlap(a.Division.Beginning, a.Division.Ending, tsNow.StartDate, tsNow.EndDate)) //provera da li raspodela kojoj grupa pripada i dalje vazi
.Select(a => a.GroupId).ToList();
List <ScheduleDTO> groupsSchedule = _context.Groups.Where(a => groups.Contains(a.GroupId) && TimeSpan.Overlap(a.TimeSpan, tsNow))
.Select(a => new ScheduleDTO
{
Day = ((DateTime)a.TimeSpan.StartDate).DayOfWeek,
StartMinutes = (int)((DateTime)a.TimeSpan.StartDate).TimeOfDay.TotalMinutes,
DurationMinutes = (int)(((DateTime)a.TimeSpan.EndDate).Subtract(((DateTime)a.TimeSpan.StartDate))).TotalMinutes,
ClassName = a.Division.Course.Name,
Abbr = a.Division.Course.Alias,
Classroom = a.Classroom.Number,
Assistant = groupService.GetAssistant(a.Assistant),
Type = a.Division.DivisionType.Type,
Color = groupService.GetNextColor(a.Division.Course.Name),
IsClass = true,
GroupId = a.GroupId,
}).ToList();
groupsSchedule.ForEach(a => a.Active = groupService.IsActive(a.GroupId, tsNow));
groupsSchedule.ForEach(a => a.Notifications = groupService.GetNotifications(a.GroupId, tsNow));
List <ScheduleDTO> activitiesSchedule =
_context.Activities.Where(a => ((a.AssistantId == assistantID ||
(a.GroupId != null && a.Cancelling == false && groups.Contains(a.GroupId.Value)) ||
(!a.StudentsActivities.Any() && a.GroupId == null)) &&
TimeSpan.Overlap(a.TimeSpan, tsNow)))
.Select(a => new ScheduleDTO
{
Day = ((DateTime)a.TimeSpan.StartDate).DayOfWeek,
StartMinutes = (int)((DateTime)a.TimeSpan.StartDate).TimeOfDay.TotalMinutes,
DurationMinutes = (int)(((DateTime)a.TimeSpan.EndDate).Subtract(((DateTime)a.TimeSpan.StartDate))).TotalMinutes,
Active = true,
Color = groupService.GetNextColor(a.Title),
ActivityTitle = a.Title,
ActivityContent = a.ActivityContent,
IsClass = false,
ActivityId = a.ActivityId,
Assistant = groupService.GetAssistant(a.Assistant),
Classroom = a.Classroom.Number,
Place = a.Place
}).ToList();
List <ScheduleDTO> returnValue = groupsSchedule.Concat(activitiesSchedule).ToList();
return(scheduleService.Convert(returnValue));
}
private int GetPhaseIndex(string phase)
{
if (!_indices.ContainsKey(phase))
{
_indices.Add(phase, AllPhases.Count);
AllPhases.Add(phase);
TimeSpans.Add(new TimeSpan());
}
return(_indices[phase]);
}
public IEnumerable GetSchedule(int ClassroomId, int weeksFromNow = 0)
{
DateTime now = DateTime.Now.AddDays(7 * weeksFromNow);
TimeSpans tsNow = new TimeSpans
{
StartDate = now.StartOfWeek(),
EndDate = now.EndOfWeek()
};
List <int> groups = _context.Groups
.Where(a => a.ClassroomId == ClassroomId &&
TimeSpan.DatesOverlap(a.Division.Beginning, a.Division.Ending, tsNow.StartDate,
tsNow.EndDate)) //provera da li raspodela kojoj grupa pripada i dalje vazi
.Select(a => a.GroupId).ToList();
List <ScheduleDTO> groupsSchedule =
_context.Groups.Where(a => groups.Contains(a.GroupId) && TimeSpan.Overlap(a.TimeSpan, tsNow))
.Select(a => new ScheduleDTO
{
Day = a.TimeSpan.StartDate.DayOfWeek,
StartMinutes = (int)a.TimeSpan.StartDate.TimeOfDay.TotalMinutes,
DurationMinutes = (int)(a.TimeSpan.EndDate.Subtract(a.TimeSpan.StartDate)).TotalMinutes,
ClassName = a.Division.Course.Name + " " + a.Name,
Abbr = a.Name + " " + a.Division.Course.Alias,
Classroom = a.Classroom.Number,
Assistant = this.GetAssistant(a.GroupId),
Type = a.Division.DivisionType.Type,
Active = this.IsActive(a.GroupId, tsNow),
Color = this.GetNextColor(a.Division.Course.Name),
IsClass = true,
}).ToList();
List <ScheduleDTO> activitiesSchedule =
_context.Activities.Where(a => a.ClassroomId == ClassroomId &&
!this.IsStudentActivity(a.ActivityId) && // ne uzima studentove aktivnosti
TimeSpan.Overlap(a.TimeSpan, tsNow))
.Select(a => new ScheduleDTO
{
Day = a.TimeSpan.StartDate.DayOfWeek,
StartMinutes = (int)a.TimeSpan.StartDate.TimeOfDay.TotalMinutes,
DurationMinutes = (int)(a.TimeSpan.EndDate.Subtract(a.TimeSpan.StartDate)).TotalMinutes,
Active = true,
Color = this.GetNextColor(a.Title),
ActivityTitle = a.Title,
ActivityContent = a.ActivityContent,
IsClass = false,
}).ToList();
List <ScheduleDTO> returnValue = groupsSchedule.Concat(activitiesSchedule).ToList();
return(scheduleService.Convert(returnValue));
}
public IActionResult MassGroupEdit([FromBody] MassGroupEditBinding obj)
{
//if (!HttpContext.Session.IsAssistant()) return Unauthorized();
if (obj?.groups == null)
{
return(Ok(new { status = "parameter error" }));
}
try
{
foreach (GroupEditBinding group in obj.groups)
{
if (group.timespan != null)
{
if (group.timespan.Period == null)
{
return(Ok(new { status = "parameter error" }));
}
// nzm zasto ovo nece
if (group.timespan.StartDate == null)
{
return(Ok(new { status = "parameter error" }));
}
if (group.timespan.EndDate == null)
{
return(Ok(new { status = "parameter error" }));
}
if (group.timespan.Period.Value != 0 && (group.timespan.TimeStart == null || group.timespan.TimeEnd == null || group.timespan.DayOfWeek == null))
{
return(Ok(new { status = "parameter error" }));
}
}
//konvertovanje u timeSpan
TimeSpans ts = Services.TimeSpan.getTimeSpan(group.timespan);
studentService.Update(group.groupID.Value, null, group.classroomID, ts);
}
return(Ok(new { status = "uspelo" }));
}
catch (InconsistentDivisionException ex)
{
return(Ok(new { status = "inconsistent division", message = ex.Message }));
}
catch (Exception ex)
{
return(Ok(new { status = "neuspelo", message = ex.Message }));
}
}
public void DeleteActivity(int activityId)
{
// brisanje TimeSpana
Activities act = _context.Activities.Include(a => a.TimeSpan).First(a => a.ActivityId == activityId);
TimeSpans ts = act.TimeSpan;
// brisanje same grupe
_context.Activities.Remove(act);
_context.SaveChanges();
if (ts != null)
{
_context.TimeSpans.Remove(ts);
}
_context.SaveChanges();
}
public void RemoveGroup(int groupId)
{
// brisanje TimeSpana
Groups group = _context.Groups.Include(a => a.TimeSpan).First(a => a.GroupId == groupId);
TimeSpans ts = group.TimeSpan;
// brisanje same grupe
_context.Groups.Remove(@group);
_context.SaveChanges();
if (ts != null)
{
_context.TimeSpans.Remove(ts);
}
_context.SaveChanges();
}
public List <NotificationDTO> GetNotifications(int GroupId, TimeSpans ts)
{
List <NotificationDTO> groupsNotifications = _context.Activities.Where(ac =>
!ac.StudentsActivities.Any() && // nece ako se ovde direktno ispita
ac.GroupId == GroupId &&
TimeSpan.TimeSpanOverlap(ac.TimeSpan, ts))
.Select(ac => new NotificationDTO
{
ActivityId = ac.ActivityId,
ActivityContent = ac.ActivityContent,
Title = ac.Title,
ClassroomId = ac.ClassroomId,
Place = ac.Place
}).ToList();
return(groupsNotifications);
}
public void AddActivity(int assistantId, int?groupId, int?classroomId, TimeSpans timeSpan, string place,
string title, string content)
{
_context.TimeSpans.Add(timeSpan);
Activities act = new Activities
{
TimeSpanId = timeSpan.TimeSpanId,
ClassroomId = classroomId,
Place = place,
Title = title,
ActivityContent = content,
GroupId = groupId,
Cancelling = false,
AssistantId = assistantId,
};
_context.Activities.Add(act);
_context.SaveChanges();
}
public void SerializeTimeSpansAsTicksAndStrings()
{
var timeSpans = new TimeSpans(TimeSpan.FromSeconds(902312));
var client = new ElasticClient();
var json = client.RequestResponseSerializer.SerializeToString(timeSpans);
json.Should()
.Be("{\"default\":9023120000000,\"defaultNullable\":9023120000000,\"string\":\"10.10:38:32\",\"stringNullable\":\"10.10:38:32\"}");
TimeSpans deserialized;
using (var stream = client.ConnectionSettings.MemoryStreamFactory.Create(Encoding.UTF8.GetBytes(json)))
deserialized = client.RequestResponseSerializer.Deserialize <TimeSpans>(stream);
timeSpans.Default.Should().Be(deserialized.Default);
timeSpans.DefaultNullable.Should().Be(deserialized.DefaultNullable);
timeSpans.String.Should().Be(deserialized.String);
timeSpans.StringNullable.Should().Be(deserialized.StringNullable);
}
public void SerializeMaxTimeSpansAsTicksAndStrings()
{
var timeSpans = new TimeSpans(TimeSpan.MaxValue);
var client = new ElasticClient();
var json = client.RequestResponseSerializer.SerializeToString(timeSpans);
json.Should()
.Be("{\"default\":9223372036854775807,\"defaultNullable\":9223372036854775807,\"string\":\"10675199.02:48:05.4775807\",\"stringNullable\":\"10675199.02:48:05.4775807\"}");
TimeSpans deserialized;
using (var stream = client.ConnectionSettings.MemoryStreamFactory.Create(Encoding.UTF8.GetBytes(json)))
deserialized = client.RequestResponseSerializer.Deserialize <TimeSpans>(stream);
timeSpans.Default.Should().Be(deserialized.Default);
timeSpans.DefaultNullable.Should().Be(deserialized.DefaultNullable);
timeSpans.String.Should().Be(deserialized.String);
timeSpans.StringNullable.Should().Be(deserialized.StringNullable);
}
public void CancelClass(int groupId, string title, string content, TimeSpans timeSpan)
{
if (!IsActive(groupId, timeSpan))
{
throw new Exception("Čas je već otkazan.");
}
_context.TimeSpans.Add(timeSpan);
Activities act = new Activities
{
Title = title,
ActivityContent = content,
GroupId = groupId,
Cancelling = true,
TimeSpanId = timeSpan.TimeSpanId
};
_context.Activities.Add(act);
_context.SaveChanges();
}
public IEnumerable GetSchedule(int departmentId, int weeksFromNow = 0)
{
DateTime now = DateTime.Now.AddDays(7 * weeksFromNow);
TimeSpans tsNow = new TimeSpans
{
StartDate = now.StartOfWeek(),
EndDate = now.EndOfWeek()
};
List <int> groups = _context.Groups
.Where(g => g.Division.DepartmentId == departmentId &&
TimeSpan.DatesOverlap(g.Division.Beginning, g.Division.Ending, tsNow.StartDate, tsNow.EndDate))
.Select(g => g.GroupId).ToList();
if (groups.Count == 0)
{
return(null);
}
List <ScheduleDTO> returnValue = _context.Groups.Where(a => groups.Contains(a.GroupId) && TimeSpan.Overlap(a.TimeSpan, tsNow))
.Select(a => new ScheduleDTO
{
Day = ((DateTime)a.TimeSpan.StartDate).DayOfWeek,
StartMinutes = (int)((DateTime)a.TimeSpan.StartDate).TimeOfDay.TotalMinutes,
DurationMinutes = (int)(((DateTime)a.TimeSpan.EndDate).Subtract(((DateTime)a.TimeSpan.StartDate))).TotalMinutes,
ClassName = a.Division.Course.Name + " " + a.Name,
Abbr = a.Name + " " + a.Division.Course.Alias,
Classroom = a.Classroom.Number,
Assistant = groupsService.GetAssistant(a.Assistant),
Type = a.Division.DivisionType.Type,
Color = groupsService.GetNextColor(a.Division.Course.Name),
IsClass = true,
GroupId = a.GroupId
}).ToList();
returnValue.ForEach(a => a.Active = groupsService.IsActive(a.GroupId, tsNow));
return(scheduleService.Convert(returnValue));
}
public IActionResult AddActivity([FromBody] AddActivityBinding obj)
{
//if (!HttpContext.Session.IsStudent()) return Unauthorized();
if (obj.timeSpan == null)
{
return(Ok(new { status = "parameter error" }));
}
try
{
//konvertovanje u timeSpan
TimeSpans ts = Services.TimeSpan.getTimeSpan(obj.timeSpan);
studentService.AddActivity(HttpContext.User.GetId(), obj.groupID, obj.classroomID, ts, obj.place, obj.title, obj.content);
return(Ok(new { status = "success" }));
}
catch (Exception ex)
{
return(Ok(new { status = "error", message = ex.Message }));
}
}
public bool CheckIfAvailable(TimeSpans ts, List <int> Students, int?GroupId = null)
{
if (ts == null)
{
return(true);
}
var unaveliable = _context.Students
.Where(a => Students.Contains(a.StudentId) && !CheckIfAvailable(a.StudentId, ts, GroupId))
.Select(a => a.UniMembers.Name + " " + a.UniMembers.Surname).ToList();
if (unaveliable.Any())
{
string exp = unaveliable.Count() > 1
? "Studenti nisu slobodni u vreme kada grupa ima cas"
: "Student nije slobodan u vreme kada grupa ima cas";
exp += " (" + TimeSpan.ToString(ts) + ").\n";
exp += String.Join("\n", unaveliable);
throw new InconsistentDivisionException(exp);
}
return(true);
}
// vraca vreme kAda grupa ima cas u naredne 4 nedelje
public IEnumerable GetActivityTimes(int groupId)
{
TimeSpans groupTs = _context.Groups.Where(a => a.GroupId == groupId).Select(a => a.TimeSpan).First();
if (groupTs == null)
{
return(null);
}
int period = groupTs.Period ?? 1;
List <TimeSpans> returnValue = new List <TimeSpans>();
for (int i = 0; i < 4; i++)
{
TimeSpans ts = new TimeSpans
{
StartDate = groupTs.StartDate.DayOfReferencedWeek(DateTime.Now.AddDays(7 * i), period),
EndDate = groupTs.EndDate.DayOfReferencedWeek(DateTime.Now.AddDays(7 * i), period)
};
returnValue.Add(ts);
}
return(returnValue);
}