/**
 * Copyright 2005-2016 The Kuali Foundation
 *
 * Licensed under the Educational Community License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.opensource.org/licenses/ecl2.php
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.kuali.rice.ken.service.impl;

import org.apache.commons.lang.StringUtils;
import org.kuali.rice.ken.bo.NotificationMessageDelivery;
import org.kuali.rice.ken.document.kew.NotificationWorkflowDocument;
import org.kuali.rice.ken.service.NotificationMessageContentService;
import org.kuali.rice.ken.service.NotificationWorkflowDocumentService;
import org.kuali.rice.ken.util.NotificationConstants;
import org.kuali.rice.kew.api.WorkflowDocument;
import org.kuali.rice.kew.api.WorkflowRuntimeException;
import org.kuali.rice.kew.api.action.ActionRequest;
import org.kuali.rice.kew.api.action.ActionRequestType;
import org.kuali.rice.kim.api.identity.principal.Principal;
import org.kuali.rice.kim.api.services.KimApiServiceLocator;

import java.util.List;

/**
 * This class is responsible for interacting with KEW - this is the default implementation that
 * leverages the KEW client API.
 * @author Kuali Rice Team (rice.collab@kuali.org)
 */
public class NotificationWorkflowDocumentServiceImpl implements NotificationWorkflowDocumentService {
    private static org.apache.log4j.Logger LOG = org.apache.log4j.Logger
            .getLogger(NotificationWorkflowDocumentServiceImpl.class);

    private NotificationMessageContentService messageContentService;

    /**
     * Constructs a NotificationWorkflowDocumentServiceImpl instance.
     * @param messageContentService
     */
    public NotificationWorkflowDocumentServiceImpl(NotificationMessageContentService messageContentService) {
        this.messageContentService = messageContentService;
    }

    /**
     * Implements by instantiating a NotificationWorkflowDocument, which in turn interacts with
     * Workflow to set it up with an initiator of the passed in user id.
     * @see org.kuali.rice.ken.service.NotificationWorkflowDocumentService#createAndAdHocRouteNotificationWorkflowDocument(org.kuali.rice.ken.bo.NotificationMessageDelivery,
     *      java.lang.String, java.lang.String, java.lang.String)
     */
    public String createAndAdHocRouteNotificationWorkflowDocument(NotificationMessageDelivery messageDelivery,
            String initiatorUserId,
            String recipientUserId, String annotation) {
        // obtain a workflow user object first
        //WorkflowIdDTO initiator = new WorkflowIdDTO(initiatorUserId);

        // now construct the workflow document, which will interact with workflow
        WorkflowDocument document = NotificationWorkflowDocument.createNotificationDocument(initiatorUserId);

        // this is our loose foreign key to our message delivery record in notification
        document.setApplicationDocumentId(messageDelivery.getId().toString());
        //document.setAppDocId(messageDelivery.getId().toString());

        // now add the content of the notification as XML to the document
        document.setApplicationContent(messageContentService.generateNotificationMessage(
                messageDelivery.getNotification(), messageDelivery.getUserRecipientId()));

        if (!StringUtils.isBlank(messageDelivery.getNotification().getTitle())) {
            document.setTitle(messageDelivery.getNotification().getTitle());
        } else {
            LOG.error("Encountered notification with no title set: Message Delivery #" + messageDelivery.getId()
                    + ", Notification #" + messageDelivery.getNotification().getId());
        }

        // now set up the ad hoc route
        String actionRequested;
        if (NotificationConstants.DELIVERY_TYPES.ACK.equals(messageDelivery.getNotification().getDeliveryType())) {
            actionRequested = NotificationConstants.KEW_CONSTANTS.ACK_AD_HOC_ROUTE;
        } else {
            actionRequested = NotificationConstants.KEW_CONSTANTS.FYI_AD_HOC_ROUTE;
        }

        // Clarification of ad hoc route call
        // param 1 - actionRequested will be either ACK or FYI
        // param 2 - annotation is whatever text we pass in to describe the transaction - this will be system generated
        // param 3 - recipient is the person who will receive this request
        // param 4 - this is the responsibilityParty (a.k.a the system that produced this request), so we'll put the producer name in there
        // param 5 - this is the "force action" requests - if set to true, this will be delivered to the recipients list regardless of
        //           whether the recipient has already taken action on this request; in our case, this doesn't really apply at this point in time,
        //           so we'll set to true just to be safe
        
        // recipientUserId will always be a principal ID due to code changes in NotificationMessageDeliveryResolverServiceImpl.buildCompleteRecipientList()
        Principal principal = KimApiServiceLocator.getIdentityService().getPrincipal(recipientUserId);
        
        document.adHocToPrincipal(ActionRequestType.fromCode(actionRequested), annotation, principal.getPrincipalId(),
                messageDelivery.getNotification().getProducer().getName(), true);

        // now actually route it along its way
        document.route(annotation);

        return document.getDocumentId();
    }

    /**
     * This service method is implemented by constructing a NotificationWorkflowDocument using the
     * pre-existing document Id that is passed in.
     * @see org.kuali.rice.ken.service.NotificationWorkflowDocumentService#findNotificationWorkflowDocumentByDocumentId(java.lang.String,
     *      java.lang.String)
     */
    public WorkflowDocument getNotificationWorkflowDocumentByDocumentId(String initiatorUserId,
            String workflowDocumentId) {
        // construct the workflow id value object
        //WorkflowIdDTO initiator = new WorkflowIdDTO(initiatorUserId);

        // now return the actual document instance
        // this handles going out and getting the workflow document
        return NotificationWorkflowDocument.loadNotificationDocument(initiatorUserId, workflowDocumentId);
    }

    /**
     * @see org.kuali.rice.ken.service.NotificationWorkflowDocumentService#clearAllFyisAndAcknowledgeNotificationWorkflowDocument(java.lang.String,
     *      org.kuali.rice.ken.document.kew.NotificationWorkflowDocument, java.lang.String)
     */
    public void clearAllFyisAndAcknowledgeNotificationWorkflowDocument(String initiatorUserId,
            WorkflowDocument workflowDocument, String annotation) {
        List<ActionRequest> reqs = workflowDocument.getRootActionRequests();
        for (int i = 0; i < reqs.size(); i++) {
            LOG.info("Action Request[" + i + "] = " + reqs.get(i).getActionRequested());
            if (reqs.get(i).getActionRequested().equals(ActionRequestType.ACKNOWLEDGE)) {
                workflowDocument.acknowledge(annotation);
            } else if (reqs.get(i).getActionRequested().equals(ActionRequestType.FYI)) {
                workflowDocument.logAnnotation(annotation);
                workflowDocument.fyi();
            } else {
                throw new WorkflowRuntimeException("Invalid notification action request in workflow document ("
                        + workflowDocument.getDocumentId()
                        + ") was encountered.  Should be either an acknowledge or fyi and was not.");
            }
        }
    }

    /** 
     * @see org.kuali.rice.ken.service.NotificationWorkflowDocumentService#terminateWorkflowDocument(org.kuali.rice.kew.api.WorkflowDocument)
     */
    public void terminateWorkflowDocument(WorkflowDocument document) {
        document.superUserCancel("terminating document: documentId=" + document.getDocumentId() + ", appDocId="
                + document.getApplicationDocumentId());
    }
}