/*
 * Copyright (c) 2005-2011 Grameen Foundation USA
 * All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * permissions and limitations under the License.
 *
 * See also http://www.apache.org/licenses/LICENSE-2.0.html for an
 * explanation of the license and how it is applied.
 */

package org.mifos.framework.components.batchjobs.helpers;

import java.sql.Date;
import java.util.Calendar;
import java.util.GregorianCalendar;

import junit.framework.Assert;

import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.mifos.accounts.business.AccountActionDateEntity;
import org.mifos.accounts.business.AccountBO;
import org.mifos.accounts.exceptions.AccountException;
import org.mifos.accounts.loan.business.LoanBO;
import org.mifos.accounts.loan.business.LoanBOTestUtils;
import org.mifos.accounts.persistence.LegacyAccountDao;
import org.mifos.accounts.productdefinition.business.LoanOfferingBO;
import org.mifos.accounts.util.helpers.AccountState;
import org.mifos.application.meeting.business.MeetingBO;
import org.mifos.customers.business.CustomerBO;
import org.mifos.customers.util.helpers.CustomerStatus;
import org.mifos.framework.MifosIntegrationTestCase;
import org.mifos.framework.hibernate.helper.StaticHibernateUtil;
import org.mifos.framework.util.helpers.IntegrationTestObjectMother;
import org.mifos.framework.util.helpers.TestObjectFactory;
import org.springframework.beans.factory.annotation.Autowired;

public class LoanArrearsHelperIntegrationTest extends MifosIntegrationTestCase {

    private LoanArrearsHelper loanArrearHelper;

    private CustomerBO center = null;

    private CustomerBO group = null;

    private MeetingBO meeting = null;

    private AccountBO loanAccount = null;

    @Autowired
    private LegacyAccountDao legacyAccountDao;

    @Before
    public void setUp() throws Exception {
        LoanArrearsTask arrearsTask = new LoanArrearsTask();
        loanArrearHelper = (LoanArrearsHelper) arrearsTask.getTaskHelper();
        meeting = TestObjectFactory.createMeeting(TestObjectFactory.getTypicalMeeting());
        center = TestObjectFactory.createWeeklyFeeCenter("Center", meeting);
        group = TestObjectFactory.createWeeklyFeeGroupUnderCenter("Group", CustomerStatus.GROUP_ACTIVE, center);
        loanAccount = createLoanAccount(group, meeting);
    }

    @After
    public void tearDown() throws Exception {
        loanAccount = null;
        group = null;
        center = null;
        loanArrearHelper = null;
        StaticHibernateUtil.flushSession();
    }

    @Test
    public void testExecute() throws Exception {
        int statusChangeHistorySize = loanAccount.getAccountStatusChangeHistory().size();
        loanArrearHelper.execute(System.currentTimeMillis());
        loanAccount = legacyAccountDao.getAccount(loanAccount.getAccountId());
       Assert.assertEquals(AccountState.LOAN_ACTIVE_IN_BAD_STANDING, loanAccount.getState());
       Assert.assertEquals(statusChangeHistorySize + 1, loanAccount.getAccountStatusChangeHistory().size());
    }

    private LoanBO createLoanAccount(CustomerBO customer, MeetingBO meeting) throws AccountException {
        Date currentdate = new Date(System.currentTimeMillis());
        LoanOfferingBO loanOffering = TestObjectFactory.createLoanOffering(currentdate, meeting);
        loanAccount = TestObjectFactory.createLoanAccount("42423142341", customer,
                AccountState.LOAN_ACTIVE_IN_GOOD_STANDING, currentdate, loanOffering);
        setDisbursementDateAsOldDate(loanAccount);
        loanAccount.update();
        IntegrationTestObjectMother.saveLoanAccount((LoanBO)loanAccount);
        return (LoanBO)loanAccount;
    }

    private void setDisbursementDateAsOldDate(AccountBO account) {
        Date startDate = offSetCurrentDate(15);
        LoanBO loan = (LoanBO) account;
        LoanBOTestUtils.modifyDisbursementDate(loan, startDate);
        for (AccountActionDateEntity actionDate : loan.getAccountActionDates()) {
            LoanBOTestUtils.setActionDate(actionDate, offSetGivenDate(actionDate.getActionDate(), 18));
        }
    }

    private java.sql.Date offSetGivenDate(Date date, int numberOfDays) {
        Calendar dateCalendar = new GregorianCalendar();
        dateCalendar.setTimeInMillis(date.getTime());
        int year = dateCalendar.get(Calendar.YEAR);
        int month = dateCalendar.get(Calendar.MONTH);
        int day = dateCalendar.get(Calendar.DAY_OF_MONTH);
        dateCalendar = new GregorianCalendar(year, month, day - numberOfDays);
        return new java.sql.Date(dateCalendar.getTimeInMillis());
    }

    private java.sql.Date offSetCurrentDate(int noOfDays) {
        Calendar currentDateCalendar = new GregorianCalendar();
        int year = currentDateCalendar.get(Calendar.YEAR);
        int month = currentDateCalendar.get(Calendar.MONTH);
        int day = currentDateCalendar.get(Calendar.DAY_OF_MONTH);
        currentDateCalendar = new GregorianCalendar(year, month, day - noOfDays);
        return new java.sql.Date(currentDateCalendar.getTimeInMillis());
    }

}