import java.util.LinkedList;
import java.util.Scanner;

public class ATM {
	static LinkedList<Customer> customerList = new LinkedList<Customer>();
	static Scanner sc = new Scanner(System.in);

	public static void main(String Args[]) {
		boolean cont = true;

		//Loop for login and creation

		while(cont){
			System.out.println(" ");
			System.out.println("Type Login to login or Create to create a new account");
			System.out.println(" ");
			String answer = sc.nextLine();
			if(answer.equalsIgnoreCase("create")) {
				customerCreation();
			} else if(answer.equalsIgnoreCase("login")){
				accountManipulation(login());
			}
		}
		sc.close();

	}

	public static Customer login() {

		System.out.println("Enter your name");
		String name = sc.nextLine();

		System.out.println("Enter your PIN");
		int PIN = sc.nextInt();

		for(int i = 0; i < customerList.size(); i++) {
			if(customerList.get(i).getName().equalsIgnoreCase(name) && customerList.get(i).getpIN() == PIN){
				System.out.println("Login Successful");
				return customerList.get(i);
			}
		}
		System.out.println("Login not found, try again");
		System.out.println();
		return null;
	}

	public static void customerCreation() {
		System.out.println("What is your name?");
		String nameX = sc.nextLine();
		int PIN = 0;

		boolean pin = true;
		while(pin) {
			System.out.println("Enter a 4 digit number to use as a pin:");
			PIN = sc.nextInt();
				if(PIN > 999 && PIN < 10000) {
					pin = false;
				}	else {
					System.out.println("Entered PIN is not valid");
				}
		}
		Customer y = new Customer(nameX, PIN);
		customerList.add(y);
		accountCreation(y);

	}

	public static void accountCreation(Customer x) {
		boolean cont1 = true,cont2 = true,cont3 = true;
		int overdraft1 = 0, overdraft2 = 0, overdraft3 = 0;

		System.out.println("Enter starting amount for Checking account: ");
		int deposit1 = sc.nextInt();
		while(cont1) {
			System.out.println("Enter Overdraft Preference: ");
			System.out.println("1 - Deny withdraw if it is greater than balance");
			System.out.println("2 - Allow withdraw if it is greater than balance and fine 25$ to my account");
			overdraft1 = sc.nextInt();
			if(overdraft1 < 1 || overdraft1 > 2) {
				System.out.println("Invalid choice, try again");
			} else {
				cont1 = false;
			}
		}
		x.addAccount(new Checking(overdraft1));
		x.findAccount("Checking").deposit(deposit1);

		System.out.println("Enter starting amount for Savings account: ");
		int deposit2 = sc.nextInt();

		while(cont2) {
			System.out.println("Enter Overdraft Preference: ");
			System.out.println("1 - Deny withdraw if it is greater than balance");
			System.out.println("2 - Allow withdraw if it is greater than balance and fine 25$ to my account");
			overdraft2 = sc.nextInt();
			if(overdraft2 < 1 || overdraft2 > 2) {
				System.out.println("Invalid choice, try again");
			} else {
				cont2 = false;
			}
		}
		x.addAccount(new Savings(overdraft2));
		x.findAccount("Savings").deposit(deposit2);

		System.out.println("Enter starting amount for Business account: ");
		int deposit3 = sc.nextInt();

		while(cont3) {
			System.out.println("Enter Overdraft Preference: ");
			System.out.println("1 - Deny withdraw if it is greater than balance");
			System.out.println("2 - Allow withdraw if it is greater than balance and fine 25$ to my account");
			overdraft3 = sc.nextInt();
			if(overdraft3 < 1 || overdraft3 > 2) {
				System.out.println("Invalid choice, try again");
			} else {
				cont3 = false;
			}
		}
		x.addAccount(new Business(overdraft3));
		x.findAccount("Business").deposit(deposit3);
	}

	public static void accountManipulation(Customer x) {
		boolean cont = true;
		if(x == null) {
			cont = false;
		}

		while(cont) {
		System.out.println("Hello " + x.getName());
		System.out.println("Enter the number of the option you want.");
		System.out.println("1 - View all accounts");
		System.out.println("2 - Make a deposit");
		System.out.println("3 - Make a transfer");
		System.out.println("4 - Make a withdraw");
		System.out.println("5 - Change PIN");
		System.out.println("6 - View UID");
		System.out.println("7 - Logout");
		int choice = sc.nextInt();

		switch(choice) {
			case 1:
				x.showAccounts();
				break;
			case 2:
				System.out.println("How much do you want to deposit?");
				int deposit = sc.nextInt();

				System.out.println("What account do you want to deposit to?");
				System.out.println("1 - Savings");
				System.out.println("2 - Checking");
				System.out.println("3 - Business");
				int choice2 = sc.nextInt();
				switch(choice2) {
					case 1:
						if(x.findAccount("Savings") == null) {
							System.out.println("Account not found, try again");
							break;
						}
						x.findAccount("Savings").deposit(deposit);
						break;
					case 2:
						if(x.findAccount("Checking") == null) {
							System.out.println("Account not found, try again");
							break;
						}
						x.findAccount("Checking").deposit(deposit);
						break;
					case 3:
						if(x.findAccount("Business") == null) {
							System.out.println("Account not found, try again");
							break;
						}
						x.findAccount("Business").deposit(deposit);
						break;
				}
				break;
			case 3:
				System.out.println("How much do you want to transfer?");
				double transfer = sc.nextDouble();

				System.out.println("Enter the UID of the person you want to transfer to.");
				int uid = sc.nextInt();
				int person = 0;

				for(int i = 0; i < customerList.size(); i++) {
					if(customerList.get(i).getuID() == uid) {
						person = i;
					}
				}

				String from;

				System.out.println("What account do you want to transfer from?");
				System.out.println("1 - Savings");
				System.out.println("2 - Checking");
				System.out.println("3 - Business");

				int choice1 = sc.nextInt();
				if(choice1 == 1) {
					from = "Savings";
				} else if(choice == 2) {
					from = "Checking";
				} else if(choice == 3) {
					from = "Business";
				} else {
					from = "Checking";
				}


				System.out.println("What account do you want to transfer to?");
				System.out.println("1 - Savings");
				System.out.println("2 - Checking");
				System.out.println("3 - Business");
				int choice3 = sc.nextInt();
				switch(choice3) {
					case 1:
						if(!x.findAccount(from).transfer(transfer, customerList.get(person).findAccount("Savings"))) {
							System.out.println("Transfer Failed");
						}
						break;
					case 2:
						if(!x.findAccount(from).transfer(transfer, customerList.get(person).findAccount("Checking"))) {
							System.out.println("Transfer Failed");
						}
						break;
					case 3:
						if(!x.findAccount(from).transfer(transfer, customerList.get(person).findAccount("Business"))) {
							System.out.println("Transfer Failed");
						}
						break;
				}
				break;

			case 4:
				System.out.println("How much do you want to withdraw?");
				int withdraw = sc.nextInt();

				System.out.println("What account do you want to withdraw from?");
				System.out.println("1 - Savings");
				System.out.println("2 - Checking");
				System.out.println("3 - Business");
				int choice4 = sc.nextInt();
				switch(choice4) {
					case 1:
						x.findAccount("Savings").withdraw(withdraw);
						break;
					case 2:
						x.findAccount("Checking").withdraw(withdraw);
						break;
					case 3:
						x.findAccount("Business").withdraw(withdraw);
						break;
				}
				break;

			case 5:
				int newPIN = 0;
				int oldPIN = 0;
				System.out.println("Enter your current PIN");
				oldPIN = sc.nextInt();

				System.out.println("Enter new PIN");
				newPIN = sc.nextInt();

				if(x.changePIN(newPIN, oldPIN) == false) {
					System.out.println("Incorrect PIN entered.");
				} else {
					System.out.println("Pin changed");
				}
				break;
			case 6:
				System.out.println("Your UID is: " + x.getuID());
				break;
			case 7:
				System.out.println("You have logged out.");
				cont = false;
				break;
		}
		}
	}
}