public string SaveTeacher(Teacher aTeacher)
{
aTeacherGateway = new TeacherGateway();
if (!DoesThisEmailExist(aTeacher))
return aTeacherGateway.SaveTeacher(aTeacher);
else
return "This Email Already Exist";
}
public string SaveTeacerCourse(TeacherCourse aTeacherCourse, float credit)
{
aTeacherGateway = new TeacherGateway();
if (!CheckTeacherTime(aTeacherCourse))
if (!DoesThisCourseExist(aTeacherCourse))
return aTeacherGateway.SaveTeacerCourse(aTeacherCourse, credit);
else
return "This Course Already Assigned";
else
return "This Time Teacher Handel Another Course";
}
public string GetTeacherId(int departmentId)
{
string teacherId = "";
aTeacherGateway = new TeacherGateway();
int id = aTeacherGateway.GetTeacherId(departmentId);
if (id < 10)
teacherId = "0" + id;
else
teacherId = id.ToString();
return teacherId;
}
public string ResetCourseScheduleAndUnassignedAllCourse()
{
try
{
ResetAssignedCourses();
ResetCourseSchedule();
ResetUnassignedTeacherCourses();
TeacherGateway aTeacherGateway = new TeacherGateway();
aTeacherGateway.UpdateTeacherCredit();
DeleteTeacherSchedule();
return("Unassigned & Unschedule All courses");
}
catch (Exception exception)
{
throw exception;
}
}
private bool CheckTeacherTime(TeacherCourse aTeacherCourse)
{
aTeacherGateway = new TeacherGateway();
ScheduleGateway aScheduleGateway = new ScheduleGateway();
List<int> coursesId = new List<int>();
coursesId = aTeacherGateway.GetTeacherAssignCoursesId(aTeacherCourse);
List<Schedule> schedules = new List<Schedule>();
schedules = aScheduleGateway.GetTeacherAllSchedules(coursesId);
List<Schedule> currentScheduleList = new List<Schedule>();
currentScheduleList = aScheduleGateway.GetCurrentCourseSchedules(aTeacherCourse);
foreach (Schedule schedule in currentScheduleList)
{
foreach (Schedule aSchedule in schedules)
{
if (schedule.DayId == aSchedule.DayId && ((schedule.StartTime <= aSchedule.StartTime && schedule.EndingTime >= aSchedule.StartTime) || (schedule.StartTime <= aSchedule.EndingTime & schedule.EndingTime >= aSchedule.EndingTime)))
{
return true;
}
}
}
return false;
}
public Teacher GetTeacherCreditInfo(Teacher aTeacher)
{
aTeacherGateway = new TeacherGateway();
return aTeacherGateway.GetTeacherCreditInfo(aTeacher);
}
public Teacher GetTeacher(Teacher aTeacher)
{
aTeacherGateway = new TeacherGateway();
return aTeacherGateway.GetTeacher(aTeacher);
}
public List<Teacher> GetAllTeachers(int departmentId)
{
aTeacherGateway = new TeacherGateway();
return aTeacherGateway.GetAllTeachers(departmentId);
}
private bool DoesThisEmailExist(Teacher aTeacher)
{
List<string> emails = new List<string>();
aTeacherGateway = new TeacherGateway();
emails = aTeacherGateway.GetAllEmails();
foreach (string email in emails)
{
if (email == aTeacher.Email)
{
return true;
}
}
return false;
}
public string ResetCourseScheduleAndUnassignedAllCourse()
{
try
{
ResetAssignedCourses();
ResetCourseSchedule();
ResetUnassignedTeacherCourses();
TeacherGateway aTeacherGateway = new TeacherGateway();
aTeacherGateway.UpdateTeacherCredit();
DeleteTeacherSchedule();
return "Unassigned & Unschedule All courses";
}
catch (Exception exception)
{
throw exception;
}
}