/*
 * #%L
 * Alfresco Repository
 * %%
 * Copyright (C) 2005 - 2016 Alfresco Software Limited
 * %%
 * This file is part of the Alfresco software. 
 * If the software was purchased under a paid Alfresco license, the terms of 
 * the paid license agreement will prevail.  Otherwise, the software is 
 * provided under the following open source license terms:
 * 
 * Alfresco 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.
 * 
 * Alfresco 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 Alfresco. If not, see <http://www.gnu.org/licenses/>.
 * #L%
 */
package org.alfresco.opencmis;

import java.util.List;

import org.alfresco.model.ContentModel;
import org.alfresco.repo.Client;
import org.alfresco.repo.Client.ClientType;
import org.alfresco.repo.activities.ActivityType;
import org.alfresco.repo.model.filefolder.HiddenAspect;
import org.alfresco.repo.tenant.TenantService;
import org.alfresco.service.cmr.activities.ActivityInfo;
import org.alfresco.service.cmr.activities.ActivityPoster;
import org.alfresco.service.cmr.model.FileFolderService;
import org.alfresco.service.cmr.model.FileFolderServiceType;
import org.alfresco.service.cmr.model.FileInfo;
import org.alfresco.service.cmr.model.FileNotFoundException;
import org.alfresco.service.cmr.repository.NodeRef;
import org.alfresco.service.cmr.repository.NodeService;
import org.alfresco.service.cmr.site.SiteInfo;
import org.alfresco.service.cmr.site.SiteService;
import org.alfresco.service.namespace.QName;
import org.alfresco.util.PropertyCheck;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.factory.InitializingBean;

/**
 * OpenCMIS methods may use an instance of this class to post activity data.
 * 
 * @see CmisActivityPoster
 * @author sglover
 */
public class ActivityPosterImpl implements CmisActivityPoster, InitializingBean
{
    private static final String APP_TOOL = "CMIS";
    public static final char PathSeperatorChar = '/';

    // Logging
    private static Log logger = LogFactory.getLog(CmisActivityPoster.class);

    private ActivityPoster poster;
    private SiteService siteService;
    private TenantService tenantService;
    private NodeService nodeService;
    private FileFolderService fileFolderService;
    private HiddenAspect hiddenAspect;

    private boolean activitiesEnabled = true;

    /**
     * Constructor
     */
    public ActivityPosterImpl()
    {
    }

    public void setHiddenAspect(HiddenAspect hiddenAspect)
    {
        this.hiddenAspect = hiddenAspect;
    }

    public void setFileFolderService(FileFolderService fileFolderService)
    {
        this.fileFolderService = fileFolderService;
    }

    public void setTenantService(TenantService tenantService)
    {
        this.tenantService = tenantService;
    }

    public void setSiteService(SiteService siteService)
    {
        this.siteService = siteService;
    }

    public void setNodeService(NodeService nodeService)
    {
        this.nodeService = nodeService;
    }
    
    public void setActivitiesEnabled(boolean activitiesEnabled)
    {
        this.activitiesEnabled = activitiesEnabled;
    }

    public void setPoster(ActivityPoster poster)
    {
        this.poster = poster;
    }
    
    private final String getPathFromNode(NodeRef rootNodeRef, NodeRef nodeRef) throws FileNotFoundException
    {
        // Check if the nodes are valid, or equal
        if (rootNodeRef == null || nodeRef == null)
            throw new IllegalArgumentException("Invalid node(s) in getPathFromNode call");
        
        // short cut if the path node is the root node
        if (rootNodeRef.equals(nodeRef))
            return "";
        
        // get the path elements
        List<FileInfo> pathInfos = fileFolderService.getNamePath(rootNodeRef, nodeRef);
        
        // build the path string
        StringBuilder sb = new StringBuilder(pathInfos.size() * 20);
        for (FileInfo fileInfo : pathInfos)
        {
            sb.append(PathSeperatorChar);
            sb.append(fileInfo.getName());
        }
        // done
        if (logger.isDebugEnabled())
        {
            logger.debug("Build name path for node: \n" +
                    "   root: " + rootNodeRef + "\n" +
                    "   target: " + nodeRef + "\n" +
                    "   path: " + sb);
        }
        return sb.toString();
    }

    /*
     * (non-Javadoc)
     * @see org.springframework.beans.factory.InitializingBean#afterPropertiesSet()
     */
    public void afterPropertiesSet() throws Exception
    {
        PropertyCheck.mandatory(this, "poster", poster);
        PropertyCheck.mandatory(this, "siteService", siteService);
        PropertyCheck.mandatory(this, "tenantService", tenantService);
        PropertyCheck.mandatory(this, "nodeService", nodeService);
        PropertyCheck.mandatory(this, "fileFolderService", fileFolderService);
    }

    private String getCurrentTenantDomain()
    {
        String tenantDomain = tenantService.getCurrentUserDomain();
        if (tenantDomain == null)
        {
            return TenantService.DEFAULT_DOMAIN;
        }
        return tenantDomain;
    }
    
    private boolean isFolder(NodeRef nodeRef)
    {
        QName typeQName = nodeService.getType(nodeRef);
        FileFolderServiceType type = fileFolderService.getType(typeQName);
        boolean isFolder = type.equals(FileFolderServiceType.FOLDER);
        return isFolder;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void postFileFolderAdded(NodeRef nodeRef)
    {
        if(activitiesEnabled && !hiddenAspect.hasHiddenAspect(nodeRef))
        {
            SiteInfo siteInfo = siteService.getSite(nodeRef);
            String siteId = (siteInfo != null ? siteInfo.getShortName() : null);
            
            if(siteId != null && !siteId.equals(""))
            {
                // post only for nodes within sites
                NodeRef parentNodeRef = nodeService.getPrimaryParent(nodeRef).getParentRef();

                String path = null;
                boolean isFolder = isFolder(nodeRef);
                String name = (String)nodeService.getProperty(nodeRef, ContentModel.PROP_NAME);

                if(isFolder)
                {
                    NodeRef documentLibrary = siteService.getContainer(siteId, SiteService.DOCUMENT_LIBRARY);
                    path = "/";
                    try
                    {
                        path = getPathFromNode(documentLibrary, nodeRef);
                    }
                    catch (FileNotFoundException error)
                    {
                        if (logger.isDebugEnabled())
                        {
                            logger.debug("No " + SiteService.DOCUMENT_LIBRARY + " container found.");
                        }
                    }
                }
                FileInfo fileInfo = fileFolderService.getFileInfo(nodeRef);
                poster.postFileFolderActivity((isFolder ? ActivityType.FOLDER_ADDED : ActivityType.FILE_ADDED), path, getCurrentTenantDomain(),
                                               siteId, parentNodeRef, nodeRef, name, APP_TOOL, Client.asType(ClientType.cmis), fileInfo);
                
            }
        }
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void postFileFolderUpdated(boolean isFolder, NodeRef nodeRef)
    {
        if(activitiesEnabled && !hiddenAspect.hasHiddenAspect(nodeRef))
        {
            SiteInfo siteInfo = siteService.getSite(nodeRef);
            String siteId = (siteInfo != null ? siteInfo.getShortName() : null);
            if(siteId != null && !siteId.equals(""))
            {
                // post only for nodes within sites
                String fileName = (String)nodeService.getProperty(nodeRef, ContentModel.PROP_NAME);
                
                if (!isFolder)
                {
                    FileInfo fileInfo = fileFolderService.getFileInfo(nodeRef);
                    poster.postFileFolderActivity(ActivityType.FILE_UPDATED, null, getCurrentTenantDomain(),
                                                  siteId, null, nodeRef, fileName, APP_TOOL, Client.asType(ClientType.cmis), fileInfo);
                }
            }
        }
    }
    
    /**
     * {@inheritDoc}
     */
    @Override
    public void postFileFolderDeleted(ActivityInfo activityInfo)
    {
        if(activitiesEnabled && activityInfo.getSiteId() != null)
        {
            poster.postFileFolderActivity((activityInfo.isFolder() ? ActivityType.FOLDER_DELETED : ActivityType.FILE_DELETED), activityInfo.getParentPath(), getCurrentTenantDomain(),
                                           activityInfo.getSiteId(), activityInfo.getParentNodeRef(), activityInfo.getNodeRef(), activityInfo.getFileName(), APP_TOOL, Client.asType(ClientType.cmis), null);
        }
    }

    public ActivityInfo getActivityInfo(NodeRef nodeRef)
    {
        SiteInfo siteInfo = siteService.getSite(nodeRef);
        String siteId = (siteInfo != null ? siteInfo.getShortName() : null);
        if(siteId != null && !siteId.equals(""))
        {
            NodeRef parentNodeRef = nodeService.getPrimaryParent(nodeRef).getParentRef();
            FileInfo fileInfo = fileFolderService.getFileInfo(nodeRef);
            String name = fileInfo.getName();
            boolean isFolder = fileInfo.isFolder();
                
            NodeRef documentLibrary = siteService.getContainer(siteId, SiteService.DOCUMENT_LIBRARY);
            String parentPath = "/";
            try
            {
                parentPath = getPathFromNode(documentLibrary, parentNodeRef);
            }
            catch (FileNotFoundException error)
            {
                if (logger.isDebugEnabled())
                {
                    logger.debug("No " + SiteService.DOCUMENT_LIBRARY + " container found.");
                }
            }
            
            return new ActivityInfo(nodeRef, parentPath, parentNodeRef, siteId, name, isFolder);
        }
        else
        {
            return null;
        }
    }

}