/**
* Prompt student with list of courses and add each on based on selection to their list of courses
*
* @param allCourses
* @param aStudent
*/
public static void menu(LinkedList<Course> courseList, User aUser, LinkedList<User> userList) {
int selection = -1;
final int MAX_COURSES = 7;
boolean more;
// send user if admin to add course
Student aStudent = new Student();
if (aUser instanceof Student) {
aStudent = (Student) aUser;
String menuPrompt =
"Welcome to the GMU IT Bookstore!"
+ "\nPlease enter the number that corresponds to one of your classes";
for (int i = 0; i < courseList.size(); i++) {
Course aCourse = courseList.get(i);
menuPrompt += "\n" + (i + 1) + ") " + aCourse.getCourseName();
}
do {
do {
try {
selection = Integer.parseInt(JOptionPane.showInputDialog(menuPrompt));
if (selection > courseList.size() || selection <= 0) {
throw new IllegalArgumentException();
}
} catch (NumberFormatException e) {
JOptionPane.showMessageDialog(
null, "Invalid entry, please enter number associated with course");
selection = -1;
} catch (IllegalArgumentException e) {
JOptionPane.showMessageDialog(null, "Invalid Selection. Try again.");
selection = -1;
}
} while (selection > courseList.size() || selection <= 0);
// add a course to student list of courses if its not already added to student's courses
if (aStudent.getCourseList().contains(courseList.get(selection - 1))) {
JOptionPane.showMessageDialog(null, "You have already ordered this book");
} else if (aStudent.getCourseList().size() >= MAX_COURSES) {
JOptionPane.showMessageDialog(
null,
"You have already registered " + MAX_COURSES + " courses, the max number allowed");
break;
} else {
if (courseList.get(selection - 1).getTextStock() < 1) {
JOptionPane.showMessageDialog(
null, "This book is backordered and will take extra processing time");
}
Course aCourse = (courseList.get(selection - 1));
aStudent.addCourse(aCourse);
JOptionPane.showMessageDialog(
null, courseList.get(selection - 1).getCourseText() + " Has been added to your cart");
}
// prompt student if they would like to continue entering courses
int reply =
JOptionPane.showConfirmDialog(
null, "Do you have another class to enter?", "title", JOptionPane.YES_NO_OPTION);
if (reply == 1) {
more = false;
} else {
more = true;
}
} while (more && (aStudent.getCourseList().size() <= MAX_COURSES));
// Give confirmation of order
JOptionPane.showMessageDialog(null, "Your order has been entered\n");
} else {
// Admin tempAdmin;
addCourse(courseList);
}
// return user to login screen
login(userList, courseList);
}