package data;

import java.util.Comparator;

public class StudentComparator {

public StudentComparator() {}

public static Comparator<Student> sortName(boolean ascending) {

return toAscending(Comparator.comparing(Student::getName), ascending);

}

public static Comparator<Student> sortSurname(boolean ascending) {

return toAscending(Comparator.comparing(Student::getSurname), ascending);

}

public static Comparator<Student> sortProgram(boolean ascending) {

return toAscending(Comparator.comparing(Student::getProgramID), ascending);

}

public static Comparator<Student> sortIdentifier(boolean ascending) {

return toAscending(Comparator.comparing(Student::getIdentifier), ascending);

}

public static Comparator<Student> sortMoyenneThenName(boolean ascending) {

return toAscending(Comparator.comparing(Student::moyenne).thenComparing(Student::getName), ascending);

}

public static Comparator<Student> sortCoursNote(String coursID, boolean ascending) {

Comparator<Student> studentComparator = (student1, student2) -> {

double noteS1 = student1.getNoteCours(coursID);

double noteS2 = student2.getNoteCours(coursID);

return Double.compare(noteS1, noteS2);

};

return toAscending(studentComparator, ascending);

}

public static Comparator<Student> toAscending(Comparator<Student> comparator, boolean ascending) {

return ascending ? comparator : comparator.reversed();

}

}