package com.knowledgeblackbelt.students.ideynega.exercises;

import java.util.List;
import java.util.LinkedList;

public class Exercise454 {

    public static void main(String[] args) {
        List<BankAccount> bankAccountList = getBankAccountList();
        List<Customer> customerList = extractCustomerListFromBankAccountList(bankAccountList);
        provideClientService(customerList);
    }

    public static List<BankAccount> getBankAccountList() {
        List<BankAccount> bankAccountList = new LinkedList<BankAccount>();
        bankAccountList.add(new BankAccount("1", 25000.0, new Customer("Robert", "Johnson")));
        bankAccountList.add(new BankAccount("2", 150.0, new Customer("John", "Robertson")));
        return bankAccountList;
    }

    public static List<Customer> extractCustomerListFromBankAccountList(List<BankAccount> bankAccountList) {
        List<Customer> customerList = new LinkedList<Customer>();
        for(BankAccount ba: bankAccountList) {
            customerList.add(ba.customer);
        }
        return customerList;
    }

    public static void provideClientService(List<Customer> customerList) {
        for(Customer currentCustomer: customerList) {
            System.out.println("Customer " + currentCustomer.firstName + " " + currentCustomer.lastName + " has been provided with customer service");
        }
    }
}

class BankAccount {

    String number;

    double balance;

    Customer customer;

    BankAccount(String number, double balance, Customer customer) {
        this.number = number;
        this.balance = balance;
        this.customer = customer;
    }
}

class Customer {

    String firstName;

    String lastName;

    Customer(String firstName, String lastName) {
        this.firstName = firstName;
        this.lastName = lastName;
    }
}