import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.Scanner;
// USER LOGINS IN TEXT FILE "UserAccounts"
public class HRApplication {

    public static final String AccountFile = "UserAccounts";        //Text file that contains the logins for accounts
    private static ArrayList<Staff> accounts = new ArrayList<Staff>();      //Array that holds the login details for accounts
    private static ArrayList<Course> array = new ArrayList<Course>();       //Array that holds course details

    public static void main(String[] args) {
        try {
            UserAccounts();
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }


    public static void UserAccounts() throws FileNotFoundException{     //This method Reads the username and passwords for each user from textfile "UserAccount"
        Scanner input = new Scanner(new File(AccountFile));             //Creats objects and adds to array list.

        while (input.hasNextLine()) {                                   //Loops as long as there is another line

            String line = input.nextLine();
            if(line.equals("ADMIN")) {                                  //Checks if the data is for Admin, creats admin object
                String AdminUsername = input.nextLine();
                String AdminPassword = input.nextLine();

                Admin admin = new Admin(AdminUsername, AdminPassword);
                accounts.add(admin);

            }  if(line.equals("COORDINATOR")){
                String coordinatorUsername = input.nextLine();
                String coordinatorPassword = input.nextLine();

                Coordinator coordinator = new Coordinator(coordinatorUsername, coordinatorPassword);
                accounts.add(coordinator);

            } if(line.equals("APPROVER")){
                String approverUsername = input.nextLine();
                String approverPassword = input.nextLine();

                Approver approver = new Approver(approverUsername, approverPassword);
                accounts.add(approver);

            } if(line.equals("CASUAL")){
                String casualUsername = input.nextLine();
                String casualPassword = input.nextLine();

                CasualStaff casual = new CasualStaff(casualUsername, casualPassword);
                accounts.add(casual);

            }

        } loginSystem();
    }

    // Adds the login details of the users into the system
//  public static void seedLogins() {
//      // Since there's only one user for each of these staff members, the log
//      // in details are stored in an array
//      Admin admin = new Admin("Admin", "cat");
//      Approver approver = new Approver("Approver", "dog");
//      Coordinator coordinator = new Coordinator("Coordinator", "mouse");
//      accounts.add(admin);
//      accounts.add(approver);
//      accounts.add(coordinator);
//      loginSystem();
//  }

    public static void loginSystem() {                          //This is the Login driver method, It prompts the users to enter their username and passwords
        boolean idExist = false;
        Scanner input = new Scanner(System.in);
        System.out.printf("%-15s %s", "Please enter Username:", "");
        String usernameInput = input.nextLine();
        System.out.printf("%-15s %s", "Please enter Password:", "");
        String passwordInput = input.nextLine();

        for (int i = 0; i < accounts.size(); i++) {             //Loops through the array list to match the username and password

            if (usernameInput.equals(accounts.get(i).getUsername())) {
                if (passwordInput.equals(accounts.get(i).getPassword())) {
                    idExist = true;

                    if (accounts.get(i) instanceof Admin) {     //Checks if the account details are for which user
                        Admin.menuChoice();
                    } else if (accounts.get(i) instanceof Approver) {
                        Approver.menuChoice();
                    } else if (accounts.get(i) instanceof Coordinator) {
                        Coordinator.menuChoice();
                    } else if (accounts.get(i) instanceof CasualStaff) {
                        CasualStaff.menuChoice();

                    }
                }
            }
        }

        System.out.println("Username or password is incorrect, please try again");      //If account details dont exist, prompts user to try again
        loginSystem();                                                                  //Restarts the method
        input.close();
    }

     public static void addCourse() {                       //Method for the addCourse option in the admin menu

            Scanner user_input = new Scanner(System.in);

            // input course name
            System.out.printf("%-35s %s", "Enter Course Name:", "");
            String Course_name = user_input.nextLine();

            // input vehicle Height checks if its numeric
            System.out.printf("%-35s %s", "Please Course ID:", "");
            String Course_ID = user_input.nextLine();

            System.out.printf("%-35s %s", "Enter pay rates per hour:", "");
            int Course_pay = user_input.nextInt();

            Course newCourse = new Course(Course_name, Course_ID, Course_pay);          //Creats object for the course and adds to course array
            array.add(newCourse);

            System.out.printf("New Course created successfully for %s !%n", Course_name);

            Admin.menuChoice();
            user_input.close();
        }

        public static void addCoordinator() {           //Method for the Alloction option in the admin menu
            Scanner user_input = new Scanner(System.in);

            String cID = null;
            String Course_name = null;
            int Course_pay = 0;

                System.out.printf("%-35s %s", "Enter course ID:", "");
                cID = user_input.nextLine();

            // Checking if registration id already exist
            boolean cIDExists = false;
            for (Course g : array) {
                if ((cID.equals(g.getCourse_ID()))) {
                    cIDExists = true;
                    Course_name =g.getCourse_ID();
                    Course_pay =g.getCourse_pay();


                }
            }

            if (cIDExists) {

                System.out.printf("%-35s %s", "Enter coordinator name:", "");
                String Coord_name = user_input.nextLine();

                AllocateCoordinator newCoord = new AllocateCoordinator(Course_name, cID, Course_pay,Coord_name); //Makes object of the allocation and adds to array
                array.add(newCoord);

                System.out.printf("Successfully allocated for %s !%n", cID);

                Admin.menuChoice();
                user_input.close();


            } else {
                System.out.println("no course ID found.");
                Admin.menuChoice();
            }

        }

        public static void  createTimetable() {
            Scanner user_input = new Scanner(System.in);

              String cID = null;
              String Course_name = null;
              int Course_pay = 0;
              String Coord_name = null;



                System.out.printf("%-35s %s", "Enter course ID:", "");
                cID = user_input.nextLine();

            // Checking if registration id already exist
            boolean cIDExists = false;
            for (Course g : array) {
                if ((cID.equals(g.getCourse_ID()))) {
                    cIDExists = true;
                    Course_name =g.getCourse_name();
                    Course_pay =g.getCourse_pay();
                    Coord_name =g.Coord_name();
                }
            }

            if (cIDExists) {

                 System.out.printf("%-35s %s", "Enter desired day:", "");
                 String Course_day = user_input.nextLine();

                 System.out.printf("%-35s %s", "Enter desired time (e.g 4:30 pm - 5:30 pm", "");
                 String Course_time = user_input.nextLine();

                 createTimetable newTimetable = new createTimetable(Course_name, cID, Course_pay,Coord_name,Course_day,Course_time); //Makes object of the allocation and adds to array
                    array.add(newTimetable);

                    System.out.printf("Successfully allocated time for %s !%n", cID);

                    Coordinator.menuChoice();
                    user_input.close();


        } else {

            System.out.println("no course ID found.");
            Coordinator.menuChoice();

        }
        }

    public static void Report() {       //Method for the report function in the admin menu
                                        // Prints the details for the course and coordinator allocated to the course
        for (int i = 0; i < array.size(); i++) {
            System.out.println(array.get(i).getDetails());          //Steps through the array and prints the details
        }
        Admin.menuChoice();
    }


    public static void ReportTimtable() {
        for (int i = 0; i < array.size(); i++) {
            System.out.println(array.get(i).getTimetabledetails());         //Steps through the array and prints the details
        }
        Coordinator.menuChoice();
    }
    public static void Logout(){    //Logout function to restarts the program by calling the login method
                                    //prompts the user to login again
        loginSystem();

    }


//      Scanner user_input = new Scanner(System.in);
//      System.out.print("Are you sure you want to log out?");
//      String a = user_input.nextLine();
//
//      String secondString = String.format("%-25s %s\n", "To Logout, Press:", "A");
//      String thirdString = String.format("%-25s %s\n", "TO cancel, Press:", "B");
//
//      switch (a.toLowerCase()) {
//      case "a":
//          seedLogins();
//          break;
//      case "b":
//          Admin.menuChoice();
//          break;
}