/*
 * eGov suite of products aim to improve the internal efficiency,transparency,
 *    accountability and the service delivery of the government  organizations.
 *
 *     Copyright (C) <2015>  eGovernments Foundation
 *
 *     The updated version of eGov suite of products as by eGovernments Foundation
 *     is available at http://www.egovernments.org
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     any later version.
 *
 *     This program 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 General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program. If not, see http://www.gnu.org/licenses/ or
 *     http://www.gnu.org/licenses/gpl.html .
 *
 *     In addition to the terms of the GPL license to be adhered to in using this
 *     program, the following additional terms are to be complied with:
 *
 *         1) All versions of this program, verbatim or modified must carry this
 *            Legal Notice.
 *
 *         2) Any misrepresentation of the origin of the material is prohibited. It
 *            is required that all modified versions of this material be marked in
 *            reasonable ways as different from the original version.
 *
 *         3) This license does not grant any rights to any user of the program
 *            with regards to rights under trademark law for use of the trade names
 *            or trademarks of eGovernments Foundation.
 *
 *   In case of any queries, you can reach eGovernments Foundation at contact@egovernments.org.
 */

package org.egov.tl.service;

import org.egov.commons.CFinancialYear;
import org.egov.commons.dao.FinancialYearHibernateDAO;
import org.egov.infra.validation.exception.ValidationException;
import org.egov.tl.entity.License;
import org.egov.tl.entity.Validity;
import org.egov.tl.repository.ValidityRepository;
import org.joda.time.LocalDate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Sort;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.Date;
import java.util.List;

@Service
@Transactional(readOnly = true)
public class ValidityService {

    private final ValidityRepository validityRepository;

    @Autowired
    private FinancialYearHibernateDAO financialYearHibernateDAO;

    @Autowired
    public ValidityService(final ValidityRepository validityRepository) {
        this.validityRepository = validityRepository;
    }

    @Transactional
    public Validity create(final Validity validity) {
        return validityRepository.save(validity);
    }

    @Transactional
    public Validity update(final Validity validity) {
        return validityRepository.save(validity);
    }

    public List<Validity> findAll() {
        return validityRepository.findAll(new Sort(Sort.Direction.ASC, "name"));
    }

    public Validity findOne(final Long id) {
        return validityRepository.findOne(id);
    }

    public List<Validity> search(final Long natureOfBusiness, final Long licenseCategory) {
        if (natureOfBusiness != null && licenseCategory != null)
            return validityRepository.findByNatureOfBusinessIdAndLicenseCategoryId(natureOfBusiness, licenseCategory);
        else if (natureOfBusiness != null)
            return validityRepository.findByNatureOfBusinessId(natureOfBusiness);
        else if (licenseCategory != null)
            return validityRepository.findByLicenseCategoryId(licenseCategory);
        else
            return validityRepository.findAll();
    }

    public void applyLicenseValidity(final License license) {

        List<Validity> validityList = validityRepository.findByNatureOfBusinessIdAndLicenseCategoryId(
                license.getNatureOfBusiness().getId(), license.getTradeName().getCategory().getId());

        if (validityList.isEmpty())
            validityList = validityRepository.findByNatureOfBusinessId(license.getNatureOfBusiness().getId());

        if (validityList.isEmpty())
            throw new ValidationException("TL-001", "License validity not defined.");
        else {
            final Validity validity = validityList.get(0);

            if (validity.isBasedOnFinancialYear()) {
                Date nextExpiryDate;
                if (license.getDateOfExpiry() == null)
                    nextExpiryDate = new Date();
                else
                    nextExpiryDate = new LocalDate(license.getDateOfExpiry()).plusDays(1).toDate();
                final CFinancialYear currentFinancialYear = financialYearHibernateDAO.getFinancialYearByDate(nextExpiryDate);
                license.setDateOfExpiry(currentFinancialYear.getEndingDate());
            } else {
                LocalDate nextExpiryDate;
                if (license.getDateOfExpiry() == null)
                    nextExpiryDate = new LocalDate();
                else
                    nextExpiryDate = new LocalDate(license.getDateOfExpiry());
                if (validity.getYear() != null && validity.getYear() > 0)
                    nextExpiryDate.plusYears(validity.getYear());
                if (validity.getMonth() != null && validity.getMonth() > 0)
                    nextExpiryDate.plusMonths(validity.getMonth());
                if (validity.getWeek() != null && validity.getWeek() > 0)
                    nextExpiryDate.plusWeeks(validity.getWeek());
                if (validity.getDay() != null && validity.getDay() > 0)
                    nextExpiryDate.plusDays(validity.getDay());
                license.setDateOfExpiry(nextExpiryDate.toDate());
            }
        }

    }

}