/*
 *  =======================================================
 *  Student.java; Create student objects ...
 *  =======================================================
 */

import java.util.Collection;
import java.util.ArrayList;
import java.util.Iterator;

public class Student {
   private int id;
   private String name;

   // Collection of departments in which the student enrols.

   private Collection<Department> departments;

   // Constuctor method ...

   public Student() {
      departments = new ArrayList<Department>();
   }

   // Setup student Ids ...

   public int getId() {
      return id;
   }

   public void setId(int id) {
      this.id = id;
   }

   // Set student name ...

   public String getName() {
      return name;
   }

   public void setName(String name) {
      this.name = name;
   }

   // Student enrols in a department ...

   public void addDepartment(Department department) {

     // Add new department to students resume ..

     if ( getDepartments().contains(department) == false ) {
          getDepartments().add(department);
     }

     // Update list of students enrolled in the department ..

     if ( department.getStudents().contains(this) == false ) {
          department.getStudents().add(this);
     }
   }

   // Student drops-out of a department ...

   public void removeDepartment(Department department) {

     // Remove department from students resume ..

     if ( getDepartments().contains(department) == true ) {
          getDepartments().remove(department);
     }

     // Update list of students enrolled in the department ..

     if ( department.getStudents().contains(this) == true ) {
        department.getStudents().remove(this);
     }
   }

   // Return collection of departments ...

   public Collection<Department> getDepartments() {
      return departments;
   }

   public void setDepartment( Collection <Department> departments) {
      this.departments = departments;
   }

   // Create String representation of student object ...

   public String toString() {
      String s = "Student: " + name + "\n";

      s = s + "Departments: ";
      if ( departments.size() == 0 )
         s = s + " none \n";
      else {
         Iterator iterator1 = departments.iterator();
         while ( iterator1.hasNext() != false ) {
            Department dept = (Department) iterator1.next();
            s = s + dept.getName() + " ";
         }
         s = s + "\n";
      }

      return s;
   }
}