public void Delete()
{
bool exit;
ICollection <Course> courses = DBAssignmentsPerCourse.ReadCoursesWithAssignments();
ICollection <Assignment> assignments = DBAssignmentsPerCourse.ReadAssignmentsWithCourses();
if (courses.Count() == 0)
{
ConsoleUI.ShowLine("No courses yet");
}
else
{
ConsoleUI.ShowLine("List of courses with assignments\n");
foreach (Course c in courses)
{
ConsoleUI.ShowLine(c);
ICollection <Assignment> CourseAssignments = c.Assignments.ToList();
if (CourseAssignments.Count() == 0)
{
ConsoleUI.ShowLine("->this course has not assignments\n");
}
else
{
foreach (Assignment a in CourseAssignments)
{
ConsoleUI.ShowMessage("->");
ConsoleUI.ShowLine(a);
}
ConsoleUI.ChangeLine();
}
}
}
ConsoleUI.ChangeLine();
ConsoleUI.ShowLine("press 0 anytime to exit");
exit = ConsoleUI.GetInt(out int selectedAssignment, "give assignment id to disconnect: ");
if (exit)
{
return;
}
Assignment assignment;
try
{
assignment = assignments.Where(a => a.Id == selectedAssignment).First();
}
catch (Exception)
{
ConsoleUI.ShowLine($"NO ASSIGNMENT FOUND FOR ID {selectedAssignment}");
ConsoleUI.ReadKey();
return;
}
exit = ConsoleUI.GetInt(out int selectedCourse, "give course id to disconnect: ");
if (exit)
{
return;
}
Course course;
try
{
course = courses.Where(c => c.Id == selectedCourse).First();
}
catch (Exception)
{
ConsoleUI.ShowLine($"NO COURSE FOUND FOR ID {selectedCourse}");
ConsoleUI.ReadKey();
return;
}
bool courseHasNoAssignment = course.Assignments.Where(a => a.Id == selectedAssignment).Count() == 0;
if (courseHasNoAssignment)
{
ConsoleUI.ShowLine("this course doesn't connect to this assignment");
//ConsoleUI.ReadKey();
//return;
}
bool assignmentHasNoCourse = assignment.Courses.Where(c => c.Id == selectedCourse).Count() == 0;
if (assignmentHasNoCourse)
{
ConsoleUI.ShowLine("this assigment doesn't connect to this course");
ConsoleUI.ReadKey();
return;
}
int result = DBAssignmentsPerCourse.DeleteAssignmentPerCourse(selectedAssignment, selectedCourse);
if (result == 0)
{
ConsoleUI.ShowLine("connection could NOT be removed");
}
else
{
ConsoleUI.ShowLine("connection removed");
AssignmentPerStudentManager apsm = new AssignmentPerStudentManager();
apsm.DeleteByAssignment(selectedAssignment, selectedCourse);
}
}
public void Create()
{
bool exit;
ConsoleUI.ShowLine("Assignments");
ICollection <Assignment> assignments = DBAssignmentsPerCourse.ReadAssignmentsWithCourses();
if (assignments.Count() == 0)
{
ConsoleUI.ShowLine("no assignment yet");
}
else
{
foreach (Assignment a in assignments)
{
ConsoleUI.ShowLine(a);
}
}
ConsoleUI.ChangeLine();
ConsoleUI.ShowLine("Courses");
ICollection <Course> courses = DBAssignmentsPerCourse.ReadCoursesWithAssignments();
if (courses.Count() == 0)
{
ConsoleUI.ShowLine("no courses yet");
}
else
{
foreach (Course c in courses)
{
ConsoleUI.ShowLine(c);
}
}
ConsoleUI.ChangeLine();
ConsoleUI.ShowLine("press 0 anytime to exit");
exit = ConsoleUI.GetInt(out int selectedAssignment, "give assignment id to connect: ");
if (exit)
{
return;
}
Assignment assignment;
try
{
assignment = assignments.Where(a => a.Id == selectedAssignment).First();
}
catch (Exception)
{
ConsoleUI.ShowLine($"NO ASSIGNMENT FOUND FOR ID {selectedAssignment}");
ConsoleUI.ReadKey();
return;
}
exit = ConsoleUI.GetInt(out int selectedCourse, "give course id to connect: ");
if (exit)
{
return;
}
Course course;
try
{
course = courses.Where(c => c.Id == selectedCourse).First();
}
catch (Exception)
{
ConsoleUI.ShowLine($"NO COURSE FOUND FOR ID {selectedCourse}");
ConsoleUI.ReadKey();
return;
}
bool courseHasAssignment = course.Assignments.Where(a => a.Id == selectedAssignment).Count() > 0;
if (courseHasAssignment)
{
ConsoleUI.ShowLine("this course already connects to this assigment");
//ConsoleUI.ReadKey();
//return;
}
bool assignmentHasCourse = assignment.Courses.Where(c => c.Id == selectedCourse).Count() > 0;
if (assignmentHasCourse)
{
ConsoleUI.ShowLine("this assignment already connects to this course");
ConsoleUI.ReadKey();
return;
}
int result = DBAssignmentsPerCourse.CreateAssignmentPerCourse(selectedAssignment, selectedCourse);
if (result == 0)
{
ConsoleUI.ShowLine("connection could NOT be made");
}
else
{
ConsoleUI.ShowLine("connection saved");
//add assignment to students of this course
AssignmentPerStudentManager apsm = new AssignmentPerStudentManager();
apsm.CreateFromNewAssignment(selectedAssignment, selectedCourse);
ConsoleUI.ReadKey();
}
}