package bankAccount;

import javax.jws.WebMethod;
import javax.jws.WebParam;
import javax.jws.WebService;

@WebService
public class Composition {
    @WebMethod
    public boolean transfer(@WebParam(name="from") String from,
                            @WebParam(name="to") String to,
                            @WebParam(name="amount") double amount) {

        // check account number
        if (!BankAccountDB.getInstance().validateExistingBankAccount(from)
            || !BankAccountDB.getInstance().validateExistingBankAccount(to)) {
            return false;
        }

        // check, if "from" user has enough money to send
        if (BankAccountDB.getInstance().validateBalance(from, amount)) {
            BankAccountDB.getInstance().subtractBalance(from, amount);
            BankAccountDB.getInstance().addBalance(to, amount);
            return true;
        }

        return false;
    }

}