SoftwareEngineeringCourse-Java/src/lab13_proxy/ex2/Bank.java

package lab13_proxy.ex2;

import java.util.ArrayList;

public class Bank {
    private final ArrayList<String> blacklistedClients = new ArrayList<>();

    public void blacklist(String client) {
        blacklistedClients.add(client);
    }
    public boolean isBlacklisted(String client) {
        return blacklistedClients.contains(client);
    }

    public void deposit(String client, Account account, int amount) {
        if (amount < 0) {
            System.out.println("Cannot deposit a negative amount");
            return;
        }
        if (isBlacklisted(client)) {
            System.out.println(client + " is on a blacklist and does not have the right to DEPOSIT money into " + account);
            return;
        }

        account.deposit(amount);
        System.out.println(client + " has deposited " + amount + " on " + account + ". New balance is " + account.getBalance());
    }

    public void withdraw(String client, Account account, int amount) {
        if (amount < 0) {
            System.out.println("Cannot withdraw a negative amount");
            return;
        }
        if (isBlacklisted(client)) {
            System.out.println(client + " is on a blacklist and does not have the right to WITHDRAW money from " + account);
            return;
        }

        if (!account.getOwner().equals(client)) {
            System.out.println(client + " cannot WITHDRAW money from " + account + " because they are not the owner");
            return;
        }

        if (account.getBalance() < amount) {
            System.out.println(client + " cannot WITHDRAW money from " + account + " because there is not enough money on the account.");
            return;
        }

        account.withdraw(amount);
        System.out.println(client + " has withdrawn " + amount + " from " + account + ". New balance is " + account.getBalance());
    }
}