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 {

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

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

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

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

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

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

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

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

			}

		}
		casualStaffListing();
	}

	public static void casualStaffListing() throws FileNotFoundException {
		Scanner input = new Scanner(new File(staffLising));

		while (input.hasNextLine()) {

			String line = input.nextLine();
			if (line.equals("Casual")) {
				String staffID = input.nextLine();
				String staffName = input.nextLine();
				boolean staffMonday = input.nextBoolean();
				boolean staffTuesday = input.nextBoolean();
				boolean staffWednesday = input.nextBoolean();
				boolean staffThursday = input.nextBoolean();
				boolean staffFriday = input.nextBoolean();
				String staffSubjectID = input.next();

				CasualStaff staffListing = new CasualStaff(staffID, staffName, staffMonday, staffTuesday,
						staffWednesday, staffThursday, staffFriday, staffSubjectID);
				Listing.add(staffListing);

			}

		}
		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();
	// }

	// This is the Login driver method, It prompts the users to enter their
	// username and passwords
	public static void loginSystem() {
		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();

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

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

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

					}
				}
			}
		}

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

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

		Scanner user_input = new Scanner(System.in);

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

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

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

		// Creats object for the course and adds to course array
		Course newCourse = new Course(Coursename, CourseID, Coursepay);
		array.add(newCourse);

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

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

	// Method for the Alloction option in the admin menu
	public static void addCoordinator() {
		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 ID:", "");
			String CoordID = user_input.nextLine();

			for (int i = 0; i < accounts.size(); i++) {
				if (CoordID.equals((accounts.get(i)).getUsername())) {
					if (accounts.get(i) instanceof Coordinator) {
						// Makes object of the allocation and adds to array
						AllocateCoordinator newCoord = new AllocateCoordinator(Course_name, cID, Course_pay, CoordID);

						array.add(newCoord);

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

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

					} else {
						System.out.println("This ID does not belong to a coordinator");
						Admin.menuChoice();
					}

				}

			}
			System.out.println("ID does not exist");
			Admin.menuChoice();
		}
	}

	public static void allocateCasualStaff() {
		Scanner user_input = new Scanner(System.in);
		String courseDay = null;
		String cID = null;
		String Course_name = null;
		int Course_pay = 0;
		String staffID = null;
		boolean allocate = false;
		boolean staffExists = false;

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

		// Checking if registration id already exist

		for (int i = 0; i < array.size(); i++) {
			if (cID.equals(array.get(i).getCourse_ID())) {
				Course_name = array.get(i).getCourse_ID();
				Course_pay = array.get(i).getCourse_pay();

			} else {
				System.out.println("Course ID does not exist");
				Coordinator.menuChoice();
			}

			System.out.println("Staff applications for this course");
			for (int a = 0; a < Listing.size(); a++) {
				if (cID.equals(Listing.get(a).getSubjectID()))
					System.out.println(Listing.get(a).getStaffDetails());
			}
			System.out.println("Please select which staff to allocate");
			staffID = user_input.nextLine();
			for (int c = 0; c < Listing.size(); c++) {
				if (staffID.equals(Listing.get(i).getID())) {
					staffExists = true;
				}
			}
			if (staffExists) {
				System.out.println("which day?");
				courseDay = user_input.nextLine();
				AllocateCasualStaff newStaff = new AllocateCasualStaff(Course_name, cID, Course_pay, staffID, courseDay,
						allocate);

				array.add(newStaff);

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

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


			}

		}


	}

	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) {
			String mondayTime = null;
			String tuesdayTime = null;
			String wednesdayTime = null;
			String thursdayTime = null;
			String fridayTime = null;

			System.out.println("Select true or false if the course is on this day");
			System.out.printf("%-35s %s", "Monday:", "");
			boolean mondayCourse = user_input.nextBoolean();
			if (mondayCourse) {
				System.out.printf("%-35s %s", "Course start Time:", "");
				String a = user_input.nextLine();
				mondayTime = user_input.nextLine();
			}

			System.out.printf("%-35s %s", "Tuesday:", "");
			boolean tuesdayCourse = user_input.nextBoolean();
			if (tuesdayCourse) {
				System.out.printf("%-35s %s", "Course start Time:", "");
				String a = user_input.nextLine();
				tuesdayTime = user_input.nextLine();
			}

			System.out.printf("%-35s %s", "Wednesday:", "");
			boolean wednesdayCourse = user_input.nextBoolean();
			if (wednesdayCourse) {
				System.out.printf("%-35s %s", "Course start Time:", "");
				String a = user_input.nextLine();
				wednesdayTime = user_input.nextLine();
			}

			System.out.printf("%-35s %s", "Thursday:", "");
			boolean thursdayCourse = user_input.nextBoolean();
			if (thursdayCourse) {
				System.out.printf("%-35s %s", "Course start Time:", "");
				String a = user_input.nextLine();
				thursdayTime = user_input.nextLine();
			}

			System.out.printf("%-35s %s", "Friday:", "");
			boolean fridayCourse = user_input.nextBoolean();
			if (fridayCourse) {
				System.out.printf("%-35s %s", "Course start Time:", "");
				String a = user_input.nextLine();
				fridayTime = user_input.nextLine();
			}

			createTimetable newTimetable = new createTimetable(Course_name, cID, Course_pay, Coord_name, mondayCourse,
					mondayTime, tuesdayCourse, tuesdayTime, wednesdayCourse, wednesdayTime, thursdayCourse,
					thursdayTime, fridayCourse, fridayTime); // 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();

		}
	}

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

	public static void ReportApproval() {
		for (int i = 0; i < array.size(); i++) {
			// Steps through the array and prints the details
			System.out.println(array.get(i).getDetails());
		}
		Approver.menuChoice();
	}
	public static void ReportCoordinator() {
		for (int i = 0; i < array.size(); i++) {
			// Steps through the array and prints the details
			System.out.println(array.get(i).getDetails());
		}
		Coordinator.menuChoice();
	}


	public static void ReportTimtable() {
		for (int i = 0; i < array.size(); i++) {
			// Steps through the array and prints the details
			System.out.println(array.get(i).getTimetabledetails());
		}
		Coordinator.menuChoice();
	}

	public static void ReportTimtableApprover() {
		for (int i = 0; i < array.size(); i++) {
			// Steps through the array and prints the details
			System.out.println(array.get(i).getTimetabledetails());
		}
		Approver.menuChoice();
	}


	public static void ReportTimtableAdmin() {
		for (int i = 0; i < array.size(); i++) {
			// Steps through the array and prints the details
			System.out.println(array.get(i).getTimetabledetails());
		}
		Admin.menuChoice();
	}

	// Logout function to restarts the program by calling the login method
	// prompts the user to login again
	public static void Logout() {
		loginSystem();

	}

	public static void CheckApproval() {
		// TODO Auto-generated method stub

		Scanner user_input = new Scanner(System.in);

		String cID = null;
		String Course_name = null;
		int Course_pay = 0;
		boolean Approve = false;

		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", "Approving course (true/false):", "");
			Approve = user_input.nextBoolean();

			ApprovingCourse newApproval = new ApprovingCourse(Course_name, cID, Course_pay, Approve);

			array.add(newApproval);

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

			Approver.menuChoice();
			user_input.close();

		} else {
			System.out.println("This ID does not belong to a coordinator");
			Approver.menuChoice();
		}



		}

	}


// public static void allocateCasualStaff() {
// Scanner user_input = new Scanner(System.in);cc
//
// String cID = 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;
// }
// }
//
// if (cIDExists) {
// System.out.printf("%-35s %s", "Enter coordinator name:", "");
// String Coord_name = user_input.nextLine();
// // Makes object of the allocation and adds to array
// array.add(newCoord);
// AllocateCoordinator newCoord = new AllocateCoordinator(Course_name,
// Course_ID, Course_pay, Coord_name);
//
// System.out.printf("Successfully allocated for %s !%n", Course_ID);
//
// Admin.menuChoice();
// user_input.close();
//
// } else {
// System.out.println("no course ID found.");
// Admin.menuChoice();
// }
//
// }
//
// }

// 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;