/*
 * The Kuali Financial System, a comprehensive financial management system for higher education.
 * 
 * Copyright 2005-2014 The Kuali Foundation
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) 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 Affero General Public License for more details.
 * 
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.kuali.kfs.module.external.kc.service.impl;

import java.net.MalformedURLException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Map;

import javax.xml.ws.WebServiceException;

import org.apache.commons.lang.StringUtils;
import org.kuali.kfs.integration.cg.ContractsAndGrantsBillingAwardAccount;
import org.kuali.kfs.module.external.kc.KcConstants;
import org.kuali.kfs.module.external.kc.businessobject.AwardAccount;
import org.kuali.kfs.module.external.kc.dto.AwardAccountDTO;
import org.kuali.kfs.module.external.kc.service.ExternalizableBusinessObjectService;
import org.kuali.kfs.module.external.kc.webService.AwardAccountSoapService;
import org.kuali.kfs.sys.KFSPropertyConstants;
import org.kuali.kra.external.award.AwardAccountService;
import org.kuali.rice.core.api.resourceloader.GlobalResourceLoader;
import org.kuali.rice.krad.bo.ExternalizableBusinessObject;

public class AwardAccountServiceImpl implements ExternalizableBusinessObjectService {
    protected static org.apache.log4j.Logger LOG = org.apache.log4j.Logger.getLogger(AwardAccountServiceImpl.class);

    protected  AwardAccountService getWebService() {
        // first attempt to get the service from the KSB - works when KFS & KC share a Rice instance
        AwardAccountService awardAccountService = (AwardAccountService) GlobalResourceLoader.getService(KcConstants.AwardAccount.SERVICE);

        // if we couldn't get the service from the KSB, get as web service - for when KFS & KC have separate Rice instances
        if (awardAccountService == null) {
            LOG.warn("Couldn't get AwardAccountService from KSB, setting it up as SOAP web service - expected behavior for bundled Rice, but not when KFS & KC share a standalone Rice instance.");

            AwardAccountSoapService soapService = null;
            try {
                soapService = new AwardAccountSoapService();
            }
            catch (MalformedURLException ex) {
                LOG.error("Could not intialize AwardAccountSoapService: " + ex.getMessage());
                throw new RuntimeException("Could not intialize AwardAccountSoapService: " + ex.getMessage());
            }
            awardAccountService = soapService.getAwardAccountServicePort();
        }
        return awardAccountService;
    }

    @Override
    public ExternalizableBusinessObject findByPrimaryKey(Map primaryKeys) {
        Collection ebos = findMatching(primaryKeys);

        if(ebos != null && ebos.iterator().hasNext()){
            return (ExternalizableBusinessObject) ebos.iterator().next();
        }else{
            return null;
        }
    }

    @Override
    public Collection findMatching(Map fieldValues) {
        String accountNumber = (String)fieldValues.get(KFSPropertyConstants.ACCOUNT_NUMBER);
        if (StringUtils.isBlank(accountNumber)) {
            accountNumber = null; // don't pass an empty string account number to KC
        }
        String chartOfAccountsCode = (String)fieldValues.get(KFSPropertyConstants.CHART_OF_ACCOUNTS_CODE);
        if (StringUtils.isBlank(chartOfAccountsCode)) {
            chartOfAccountsCode = null; // don't pass an empty string chart code to KC
        }

        List awardAccounts = new ArrayList();
        List<AwardAccountDTO> awardAccountDTOs = null;

        //get award account DTO
        try{
            awardAccountDTOs = getWebService().getAwardAccounts(accountNumber, chartOfAccountsCode);
        } catch (WebServiceException ex) {
            LOG.error("Could not retrieve award accounts: "+ ex.getMessage());
        }

        if (awardAccountDTOs != null && !awardAccountDTOs.isEmpty()) {
            ContractsAndGrantsBillingAwardAccount awardAccountInfo = null;

            for(AwardAccountDTO awardAccount : awardAccountDTOs){
                //create if no error messages
                if(StringUtils.isEmpty(awardAccount.getErrorMessage())){
                    awardAccountInfo = new AwardAccount(awardAccount, accountNumber, chartOfAccountsCode, "");
                    awardAccounts.add(awardAccountInfo);
                }
            }
        }

        return awardAccounts;
    }
}