/*
 * 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.purap.document.validation.impl;

import java.util.Collection;

import org.apache.commons.lang.StringUtils;
import org.kuali.kfs.module.purap.PurapKeyConstants;
import org.kuali.kfs.module.purap.businessobject.NegativePaymentRequestApprovalLimit;
import org.kuali.kfs.module.purap.document.service.NegativePaymentRequestApprovalLimitService;
import org.kuali.kfs.sys.KFSPropertyConstants;
import org.kuali.kfs.sys.context.SpringContext;
import org.kuali.rice.kns.document.MaintenanceDocument;
import org.kuali.rice.kns.maintenance.rules.MaintenanceDocumentRuleBase;

/**
 * Business rules for the NegativePaymentRequestApprovalLimit maintenance document
 */
public class NegativePaymentRequestApprovalLimitRule extends MaintenanceDocumentRuleBase {

    /**
     * @see org.kuali.rice.kns.maintenance.rules.MaintenanceDocumentRuleBase#processCustomApproveDocumentBusinessRules(org.kuali.rice.kns.document.MaintenanceDocument)
     */
    @Override
    protected boolean processCustomApproveDocumentBusinessRules(MaintenanceDocument document) {
        boolean result = super.processCustomApproveDocumentBusinessRules(document);
        final NegativePaymentRequestApprovalLimit limit = (NegativePaymentRequestApprovalLimit)getNewBo();
        result &= checkExclusiveOrganizationCodeAndAccountNumber(limit);
        if (document.isNew() || document.isNewWithExisting()) {
            result &= checkUniqueConstraint(limit);
        }
        return result;
    }

    /**
     * @see org.kuali.rice.kns.maintenance.rules.MaintenanceDocumentRuleBase#processCustomRouteDocumentBusinessRules(org.kuali.rice.kns.document.MaintenanceDocument)
     */
    @Override
    protected boolean processCustomRouteDocumentBusinessRules(MaintenanceDocument document) {
        boolean result = super.processCustomRouteDocumentBusinessRules(document);
        final NegativePaymentRequestApprovalLimit limit = (NegativePaymentRequestApprovalLimit)getNewBo();
        result &= checkExclusiveOrganizationCodeAndAccountNumber(limit);
        if (document.isNew() || document.isNewWithExisting()) {
            result &= checkUniqueConstraint(limit);
        }
        return result;
    }
    
    
    private boolean checkUniqueConstraint(NegativePaymentRequestApprovalLimit limit) {
        boolean result = true;
        String chartCode = limit.getChartOfAccountsCode();
        String acctNumber = limit.getAccountNumber();
        String organizationCode = limit.getOrganizationCode();
         if (!StringUtils.isBlank(organizationCode)) {
            Collection<NegativePaymentRequestApprovalLimit> negativePaymentRequestApprovalLimits = SpringContext.getBean(NegativePaymentRequestApprovalLimitService.class).findByChartAndOrganization(chartCode, organizationCode); 
            if (negativePaymentRequestApprovalLimits.size() > 0) {
                putFieldError(KFSPropertyConstants.ORGANIZATION_CODE, PurapKeyConstants.ERROR_NEGATIVE_PAYMENT_REQUEST_APPROVAL_LIMIT_ORG_AND_ACCOUNT_UNIQUE, new String[] {});
                result = false;
            }
        } else if (!StringUtils.isBlank(acctNumber)) {
            Collection<NegativePaymentRequestApprovalLimit> negativePaymentRequestApprovalLimits = SpringContext.getBean(NegativePaymentRequestApprovalLimitService.class).findByChartAndAccount(chartCode, acctNumber);
            if (negativePaymentRequestApprovalLimits.size() > 0) {
                putFieldError(KFSPropertyConstants.ACCOUNT_NUMBER, PurapKeyConstants.ERROR_NEGATIVE_PAYMENT_REQUEST_APPROVAL_LIMIT_ORG_AND_ACCOUNT_UNIQUE, new String[] {});
                result = false;
            }
        }
        return result;
    }


    /**
     * Checks that organization code and account number aren't both specified on a new NegativePaymentRequestApprovalLimit
     * @param limit the NegativePaymentRequestApprovalLimit to check
     * @return true if the rule passed, false otherwise (with error message added)
     */
    protected boolean checkExclusiveOrganizationCodeAndAccountNumber(NegativePaymentRequestApprovalLimit limit) {
        if (!StringUtils.isBlank(limit.getOrganizationCode()) && !StringUtils.isBlank(limit.getAccountNumber())) {
            putFieldError(KFSPropertyConstants.ORGANIZATION_CODE, PurapKeyConstants.ERROR_NEGATIVE_PAYMENT_REQUEST_APPROVAL_LIMIT_ORG_AND_ACCOUNT_EXCLUSIVE, new String[] {});
            putFieldError(KFSPropertyConstants.ACCOUNT_NUMBER, PurapKeyConstants.ERROR_NEGATIVE_PAYMENT_REQUEST_APPROVAL_LIMIT_ORG_AND_ACCOUNT_EXCLUSIVE, new String[] {});
            return false;
        }
        return true;
    }

}