import java.io.*;

public class Admin {
    // create an instance of Enrolment
    Enrolment enrolement = new Enrolment();

    public static void main(String[] args) throws IOException {
        String i = "=====================";
        System.out.println(i);
        System.out.println("Student Admin System");
        System.out.println(i);
        System.out.print("Creating Enrolment...");
        // create instance of Admin which creates an instance of Enrolment
        Admin admin = new Admin();
        System.out.println("Done");
        System.out.print("Populating Enrolment...");
        // send method calls to the instance of Admin (admin) to access non
        // static methods
        admin.fillData();
        admin.searchStudent();
    }

    // Creates an enrolment list using the addStudent() method
    // Prints the details of the student using the printEnrolment() method
    public void fillData() {

        enrolement.addStudent(1, "John", "Smith", "Male", "1985-02-11",
                                "0413 454 556", 1995);
        enrolement.addStudent(23456789, "David", "Nguyen", "female",
                                "2007 05 25", "(03) 9311 3204", 2006);
        enrolement.addStudent(34567890, "Michael", "googlestien", "f",
                                "20050601", "03-9364-8745", 1998);
        enrolement.addStudent(45678901, "Paul", "sinartra", "M", "19910416",
                                "0400101987", 2006);
        enrolement.addStudent(99999999, "Jesus", "ciaffaglione", "F",
                                "1963/01/18", "98754684", 2004);
        System.out.println("Done" + "\n");
        System.out.println("The current students in the enrolment list are:"
                + "\n");
        enrolement.printEnrolment();
    }

    // Asks user for a commencement year and prints all Students with the same
    // commencement year using printDetails()
    public void searchStudent() throws IOException {
        // searchStudent variables
        String j = "=============================================";
        boolean fail = true;
        BufferedReader searchInput = new BufferedReader(new InputStreamReader(
                System.in));

        // ask for input on the console
        System.out.println(j);
        System.out.println("Please enter a commencing year to search for:");
        int year = Integer.parseInt(searchInput.readLine());

        // determines if there are any matching Students using a boolean
        for (int i = 0; i < enrolement.getMaxStudents(); i++) {
            if (enrolement.getStudent(i) != null
                    && enrolement.getStudent(i).getYear() == year) {
                fail = false;
            }
        }
        // executed when there is matching students
        if (fail == false) {
            System.out.println("\n" + "The following students commenced in "
                    + year + ":" + "\n");
            for (int i = 0; i < enrolement.getMaxStudents(); i++) {
                // if the enrolment index is not empty and there is a matching
                // Student use printDetails to print to console
                if (enrolement.getStudent(i) != null
                        && enrolement.getStudent(i).getYear() == year) {
                    System.out.println(enrolement.getStudent(i).printDetails());
                }
            }
            // executed when there is no matching students
        } else if (fail == true) {
            System.out.println("\n"
                    + "Sorry, no students in the enrolment list.");
            searchStudent();
        }

    }
}