/**
 * Copyright (C) 2013 Premium Minds.
 *
 * This file is part of billy spain (ES Pack).
 *
 * billy spain (ES Pack) 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.
 *
 * billy spain (ES Pack) 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 billy spain (ES Pack). If not, see <http://www.gnu.org/licenses/>.
 */
package com.premiumminds.billy.spain.services.documents;

import java.util.Date;

import javax.inject.Inject;
import javax.persistence.LockModeType;

import com.premiumminds.billy.core.persistence.dao.DAOGenericInvoice;
import com.premiumminds.billy.core.persistence.dao.DAOInvoiceSeries;
import com.premiumminds.billy.core.persistence.entities.BaseEntity;
import com.premiumminds.billy.core.persistence.entities.InvoiceSeriesEntity;
import com.premiumminds.billy.core.persistence.entities.jpa.JPAInvoiceSeriesEntity;
import com.premiumminds.billy.core.services.documents.DocumentIssuingHandler;
import com.premiumminds.billy.core.services.documents.IssuingParams;
import com.premiumminds.billy.core.services.documents.impl.DocumentIssuingHandlerImpl;
import com.premiumminds.billy.core.services.entities.documents.GenericInvoice;
import com.premiumminds.billy.core.services.exceptions.DocumentIssuingException;
import com.premiumminds.billy.spain.persistence.entities.ESGenericInvoiceEntity;
import com.premiumminds.billy.spain.services.documents.exceptions.InvalidInvoiceDateException;
import com.premiumminds.billy.spain.services.documents.util.ESIssuingParams;

public abstract class ESGenericInvoiceIssuingHandler extends
	DocumentIssuingHandlerImpl implements DocumentIssuingHandler {

	protected DAOInvoiceSeries	daoInvoiceSeries;

	@Inject
	public ESGenericInvoiceIssuingHandler(DAOInvoiceSeries daoInvoiceSeries) {
		this.daoInvoiceSeries = daoInvoiceSeries;
	}
	@Override
	public abstract <T extends GenericInvoice, P extends IssuingParams> T issue(
			T document, P parameters) throws DocumentIssuingException;

	protected <T extends GenericInvoice, D extends DAOGenericInvoice> T issue(
			final T document, final ESIssuingParams parametersES,
			final D daoInvoice)
		throws DocumentIssuingException {
		
		String series  = parametersES.getInvoiceSeries();
		
		InvoiceSeriesEntity invoiceSeriesEntity = getInvoiceSeries(document, 
				series, LockModeType.PESSIMISTIC_WRITE);

		ESGenericInvoiceEntity documentEntity = (ESGenericInvoiceEntity) document;
		
		((BaseEntity)document).initializeEntityDates();
		
		//If the date is null then the invoice date is the current date
		Date invoiceDate = document.getDate() == null ? new Date() : document.getDate();

//		if (systemDate..after(invoiceDate)) {
//			throw new InvalidInvoiceDateException();
//		}

		Integer seriesNumber = 1;

		ESGenericInvoiceEntity latestInvoice = daoInvoice
				.getLatestInvoiceFromSeries(invoiceSeriesEntity.getSeries(), document.getBusiness()
						.getUID().toString());

		if (null != latestInvoice) {
			seriesNumber = latestInvoice.getSeriesNumber() + 1;
			Date latestInvoiceDate = latestInvoice.getDate();

			if (latestInvoiceDate.compareTo(invoiceDate) > 0) {
				throw new InvalidInvoiceDateException();
			}
		}

		String formatedNumber = parametersES.getInvoiceSeries() + "/" + seriesNumber;

		documentEntity.setDate(invoiceDate);
		documentEntity.setNumber(formatedNumber);
		documentEntity.setSeries(invoiceSeriesEntity.getSeries());
		documentEntity.setSeriesNumber(seriesNumber);
		documentEntity.setBilled(false);
		documentEntity.setCancelled(false);
		documentEntity.setEACCode(parametersES.getEACCode());
		documentEntity.setCurrency(document.getCurrency());

		daoInvoice.create(documentEntity);

		return (T) documentEntity;
	}

	private <T extends GenericInvoice> InvoiceSeriesEntity getInvoiceSeries(
			final T document, String series, LockModeType lockMode) {
		InvoiceSeriesEntity invoiceSeriesEntity = daoInvoiceSeries.getSeries(
				series, document.getBusiness().getUID().toString(), lockMode);

		if (null == invoiceSeriesEntity) {
			InvoiceSeriesEntity entity = new JPAInvoiceSeriesEntity();
			entity.setBusiness(document.getBusiness());
			entity.setSeries(series);

			invoiceSeriesEntity = daoInvoiceSeries.create(entity);
		}
		return invoiceSeriesEntity;
	}
}