/*
 * 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.accounts.financial.business.service.activity.accountingentry;

import org.mifos.accounts.financial.business.FinancialActionTypeEntity;
import org.mifos.accounts.financial.exceptions.FinancialException;
import org.mifos.accounts.financial.util.helpers.FinancialActionCache;
import org.mifos.accounts.financial.util.helpers.FinancialActionConstants;
import org.mifos.accounts.financial.util.helpers.FinancialConstants;
import org.mifos.accounts.savings.business.SavingsBO;
import org.mifos.accounts.savings.business.SavingsTrxnDetailEntity;
import org.mifos.accounts.util.helpers.AccountState;
import org.mifos.config.AccountingRules;
import org.mifos.framework.util.helpers.Money;

public class WithdrawalAccountingEntry extends BaseAccountingEntry {

    @Override
    protected void applySpecificAccountActionEntry() throws FinancialException {
        SavingsTrxnDetailEntity savingsTrxn = (SavingsTrxnDetailEntity) financialActivity.getAccountTrxn();
        SavingsBO savings = (SavingsBO) savingsTrxn.getAccount();
        FinancialActionTypeEntity finActionWithrawal = null;
        if (savings.isMandatory()) {
            finActionWithrawal = getFinancialAction(FinancialActionConstants.MANDATORYWITHDRAWAL);
        }
        if (savings.isVoluntary()) {
            finActionWithrawal = getFinancialAction(FinancialActionConstants.VOLUNTARYWITHDRAWAL);
        }

        if (savings.getState() == AccountState.SAVINGS_CLOSED) {
            handleRoundingForWithdrawal(savings, savingsTrxn);
        }

        addAccountEntryDetails(savingsTrxn.getWithdrawlAmount(), finActionWithrawal, savings.getSavingsOffering()
                .getDepositGLCode(), FinancialConstants.DEBIT);
        addAccountEntryDetails(savingsTrxn.getWithdrawlAmount(), finActionWithrawal, getGLcode(finActionWithrawal
                .getApplicableCreditCharts()), FinancialConstants.CREDIT);
    }

    private void handleRoundingForWithdrawal(SavingsBO savings, SavingsTrxnDetailEntity savingsTrxn)
            throws FinancialException {
        Money roundedAmount = Money.round(savingsTrxn.getWithdrawlAmount(),
                savingsTrxn.getWithdrawlAmount().getCurrency().getRoundingAmount(), AccountingRules.getCurrencyRoundingMode());
        if (!roundedAmount.equals(savingsTrxn.getWithdrawlAmount())) {
            FinancialActionTypeEntity finActionRounding = FinancialActionCache
                    .getFinancialAction(FinancialActionConstants.ROUNDING);
            if (roundedAmount.isGreaterThan(savingsTrxn.getWithdrawlAmount())) {
                addEntriesForIncreasedAmount(savings, finActionRounding, roundedAmount, savingsTrxn
                        .getWithdrawlAmount());
            } else {
                addEntriesForDecreasedAmount(savings, finActionRounding, roundedAmount, savingsTrxn
                        .getWithdrawlAmount());
            }

            // savingsTrxn.setWithdrawlAmount(roundedAmount);
        }
    }

    private void addEntriesForIncreasedAmount(SavingsBO savings, FinancialActionTypeEntity finActionRounding, Money roundedAmt,
            Money withdrawalAmt) throws FinancialException {
        addAccountEntryDetails(roundedAmt.subtract(withdrawalAmt), finActionRounding, getGLcode(finActionRounding
                .getApplicableDebitCharts()), FinancialConstants.DEBIT);
        addAccountEntryDetails(roundedAmt.subtract(withdrawalAmt), finActionRounding, savings.getSavingsOffering()
                .getDepositGLCode(), FinancialConstants.CREDIT);
    }

    private void addEntriesForDecreasedAmount(SavingsBO savings, FinancialActionTypeEntity finActionRounding, Money roundedAmt,
            Money withdrawalAmt) throws FinancialException {
        addAccountEntryDetails(withdrawalAmt.subtract(roundedAmt), finActionRounding, savings.getSavingsOffering()
                .getDepositGLCode(), FinancialConstants.DEBIT);
        addAccountEntryDetails(withdrawalAmt.subtract(roundedAmt), finActionRounding, getGLcode(finActionRounding
                .getApplicableCreditCharts()), FinancialConstants.CREDIT);
    }

}