/*
* 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.savings.interest;
import org.mifos.framework.util.helpers.Money;
public class SavingsInterestCalculator implements InterestCalculator {
private final PrincipalCalculationStrategy principalCalculationStrategy;
private final SimpleInterestCalculationStrategy principalBasedInterestCalculation;
private final InterestCalucationRule minimumBalanceRule;
public SavingsInterestCalculator(PrincipalCalculationStrategy principalCalculationStrategy, SimpleInterestCalculationStrategy principalBasedInterestCalculation, InterestCalucationRule minimumBalanceRule) {
this.principalCalculationStrategy = principalCalculationStrategy;
this.principalBasedInterestCalculation = principalBasedInterestCalculation;
this.minimumBalanceRule = minimumBalanceRule;
}
@Override
public InterestCalculationPeriodResult calculateSavingsDetailsForPeriod(InterestCalculationPeriodDetail interestCalculationPeriodDetail) {
Money calculatedInterest = interestCalculationPeriodDetail.zeroAmount();
Money totalBalanceForPeriod = interestCalculationPeriodDetail.sumOfPrincipal();
Money totalInterestForPeriod = interestCalculationPeriodDetail.sumOfInterest();
Money principal = principalCalculationStrategy.calculatePrincipal(interestCalculationPeriodDetail);
if (minimumBalanceRule.isCalculationAllowed(principal)) {
calculatedInterest = principalBasedInterestCalculation.calculateInterest(principal, interestCalculationPeriodDetail.getDuration());
}
return new InterestCalculationPeriodResult(interestCalculationPeriodDetail.getInterval(), calculatedInterest, principal, totalBalanceForPeriod, totalInterestForPeriod);
}
}