/*
 * @(#)UnitItem.java
 *
 * Copyright 2009 Instituto Superior Tecnico
 * Founding Authors: Luis Cruz, Nuno Ochoa, Paulo Abrantes
 * 
 *      https://fenix-ashes.ist.utl.pt/
 * 
 *   This file is part of the Expenditure Tracking Module.
 *
 *   The Expenditure Tracking Module is free software: you can
 *   redistribute it and/or modify it under the terms of the GNU Lesser General
 *   Public License as published by the Free Software Foundation, either version 
 *   3 of the License, or (at your option) any later version.
 *
 *   The Expenditure Tracking Module is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 *   GNU Lesser General Public License for more details.
 *
 *   You should have received a copy of the GNU Lesser General Public License
 *   along with the Expenditure Tracking Module. If not, see <http://www.gnu.org/licenses/>.
 * 
 */
package pt.ist.expenditureTrackingSystem.domain.acquisitions;

import java.math.BigDecimal;
import java.util.Collection;

import module.finance.util.Money;
import pt.ist.expenditureTrackingSystem._development.Bundle;
import pt.ist.expenditureTrackingSystem.domain.organization.AccountingUnit;
import pt.ist.expenditureTrackingSystem.domain.organization.Unit;
import pt.ist.expenditureTrackingSystem.domain.util.DomainException;

/**
 * 
 * @author Paulo Abrantes
 * @author Luis Cruz
 * 
 */
public class UnitItem extends UnitItem_Base {

    public UnitItem(Financer financer, RequestItem item, Money shareValue, Boolean isAuthorized,
            Boolean isSubmitedForFundsAllocation) {

        checkParameters(financer, item, shareValue, isAuthorized);

        setFinancer(financer);
        setItem(item);
        setShareValue(shareValue);
        setItemAuthorized(isAuthorized);
        setSubmitedForFundsAllocation(isSubmitedForFundsAllocation);
        setInvoiceConfirmed(Boolean.FALSE);
    }

    private void checkParameters(Financer financer, RequestItem item, Money shareValue, Boolean isApproved) {
        if (financer == null || item == null || shareValue == null || isApproved == null) {
            throw new DomainException(Bundle.ACQUISITION, "unitItem.message.exception.parametersCannotBeNull");
        }

        if (shareValue.isZero()) {
            throw new DomainException(Bundle.ACQUISITION, "error.share.value.cannot.be.zero");
        }

        if (shareValue.isNegative()) {
            throw new DomainException(Bundle.ACQUISITION, "error.share.value.cannot.be.negative");
        }

        Money currentAssignedValue = item.getTotalAssigned();
        if (currentAssignedValue.addAndRound(shareValue).isGreaterThan(item.getValue().round())) {
            throw new DomainException(Bundle.ACQUISITION, "unitItem.message.exception.assignedValuedBiggerThanTotal");
        }
    }

    public Money getRoundedShareValue() {
        return getShareValue() != null ? new Money(getShareValue().getRoundedValue()) : null;
    }

    public Money getRoundedRealShareValue() {
        return getRealShareValue() != null ? new Money(getRealShareValue().getRoundedValue()) : null;
    }

    public BigDecimal getVatValue() {
        return getItem().getVatValue();
    }

    public Money getShareVatValue() {
        return getShareValue().multiplyAndRound(getVatValue());
    }

    public void delete() {
        setFinancer(null);
        setItem(null);
        getConfirmedInvoicesSet().clear();
        deleteDomainObject();
    }

    @Override
    public void setRealShareValue(Money realShareValue) {
        if (realShareValue != null) {
            Money totalAmount = getItem().getRealValue();
            Money currentAssignedValue = getItem().getTotalRealAssigned();

            if (currentAssignedValue.add(realShareValue).round().isGreaterThan(totalAmount.round())) {
                throw new DomainException(Bundle.ACQUISITION, "unitItem.message.exception.cannotASsignMoreThanTotalAmount");
            }
        }
        super.setRealShareValue(realShareValue);
    }

    public Unit getUnit() {
        return getFinancer().getUnit();
    }

    public AccountingUnit getAccountingUnit() {
        return getFinancer().getAccountingUnit();
    }

    @Override
    @Deprecated
    public Boolean getSubmitedForFundsAllocation() {
        return super.getSubmitedForFundsAllocation();
    }

    public boolean isApproved() {
        return getSubmitedForFundsAllocation();
    }

    public boolean isWithAllInvoicesConfirmed() {
        Collection<PaymentProcessInvoice> invoicesFiles = getItem().getInvoicesFiles();
        Collection<PaymentProcessInvoice> confirmedInvoices = getConfirmedInvoices();

        return !invoicesFiles.isEmpty() && confirmedInvoices.containsAll(invoicesFiles);

    }

    public String getProjectFundAllocationId() {
        throw new Error();
//        for (final ProjectAcquisitionFundAllocationRequest request : getProjectAcquisitionFundAllocationRequestSet()) {
//            if (!request.isCanceled()) {
//                final String result = request.getFundAllocationNumber();
//                if (result != null && !result.isEmpty()) {
//                    return result;
//                }
//            }
//        }
//        return null;
    }

    public void cancelFundAllocationRequest(final boolean isFinalFundAllocation) {
//        for (final ProjectAcquisitionFundAllocationRequest request : getProjectAcquisitionFundAllocationRequestSet()) {
//            if (isFinalFundAllocation == request.getFinalFundAllocation().booleanValue()) {
//                request.cancelFundAllocationRequest();
//            }
//        }
    }

    @Deprecated
    public java.util.Set<pt.ist.expenditureTrackingSystem.domain.acquisitions.PaymentProcessInvoice> getConfirmedInvoices() {
        return getConfirmedInvoicesSet();
    }

    @Deprecated
    public boolean hasAnyConfirmedInvoices() {
        return !getConfirmedInvoicesSet().isEmpty();
    }

    @Deprecated
    public boolean hasSubmitedForFundsAllocation() {
        return getSubmitedForFundsAllocation() != null;
    }

    @Deprecated
    public boolean hasItemAuthorized() {
        return getItemAuthorized() != null;
    }

    @Deprecated
    public boolean hasInvoiceConfirmed() {
        return getInvoiceConfirmed() != null;
    }

    @Deprecated
    public boolean hasShareValue() {
        return getShareValue() != null;
    }

    @Deprecated
    public boolean hasRealShareValue() {
        return getRealShareValue() != null;
    }

    @Deprecated
    public boolean hasFinancer() {
        return getFinancer() != null;
    }

    @Deprecated
    public boolean hasItem() {
        return getItem() != null;
    }

}