package businessLogic;

import java.rmi.RemoteException;
import java.rmi.server.UnicastRemoteObject;
import java.util.Vector;

import common.LoginInterface;

import dataAccess.DB4oManager;
import domain.Account;

public class LoginManager extends UnicastRemoteObject implements LoginInterface {

	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	DB4oManager dbMngr;

	public LoginManager() throws RemoteException {
		super();
		try {
			dbMngr = DB4oManager.getInstance();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	@Override
	public Account checkCredentials(String usr, String pwd) {
		Account ac = new Account(SecurityManager.getInstance().calculateHash(
				usr));
		try {
			Vector<Account> account = dbMngr.getAccount(ac);
			if (account.isEmpty())
				return null;
			if (SecurityManager.getInstance().isExpectedPassword(
					pwd.toCharArray(), account.get(0).getSalt(),
					account.get(0).getPassword())) {

				return account.get(0);
			}
			return null;

		} catch (Exception e) {
			e.printStackTrace();
		}
		return null;
	}
}