/**
 * 
 */
package org.gcube.portlets.user.workspace.server.notifications;

import java.util.ArrayList;
import java.util.List;

import javax.servlet.http.HttpSession;

import org.apache.log4j.Logger;
import org.gcube.portlets.user.homelibrary.home.workspace.Workspace;
import org.gcube.portlets.user.homelibrary.home.workspace.WorkspaceFolder;
import org.gcube.portlets.user.homelibrary.home.workspace.WorkspaceItem;
import org.gcube.portlets.user.homelibrary.home.workspace.WorkspaceItemType;
import org.gcube.portlets.user.homelibrary.home.workspace.WorkspaceSharedFolder;
import org.gcube.portlets.user.workspace.client.model.InfoContactModel;
import org.gcube.portlets.user.workspace.server.GWTWorkspaceBuilder;
import org.gcube.portlets.user.workspace.server.util.Util;

/**
 * @author Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it
 * @May 27, 2013
 *
 */
public class NotificationsUtil {
	
	
	protected static Logger logger = Logger.getLogger(NotificationsUtil.class);
	
	/**
	 * 
	 * @param httpSession
	 * @param sourceItem
	 * @param sourceSharedId
	 * @param folderDestinationItem
	 */
	public static void checkNotifyAddItemToShare(HttpSession httpSession, final WorkspaceItem sourceItem, final String sourceSharedId, final WorkspaceItem folderDestinationItem) {
		
		logger.trace("checkNotifyAddItemToShare");
		
		if(folderDestinationItem!=null){ 
				
			try{
				//if folder destination is shared folder
				if(folderDestinationItem.isShared()){ 	//Notify Added Item To Sharing?
					
					logger.trace("checkNotifyAddItemToShare source item: "+sourceItem.getName()+" sourceSharedId: "+sourceSharedId + " folder destination: "+folderDestinationItem.getName() + " folder destination shared folder id: "+folderDestinationItem.getIdSharedFolder());
					
					//share condition is true if source shared folder is not null
					boolean shareChangeCondition = sourceSharedId==null?false:true;
				
					//System.out.println("shareChangeCondition add item: "+  shareChangeCondition);
				
					logger.trace("shareChangeCondition add item: "+shareChangeCondition);
					
					//if shareChangeCondition is true.. notifies added item to sharing
					if(shareChangeCondition){  

						Workspace workspace = Util.getWorkspace(httpSession);
						
						List<InfoContactModel> listContacts = getListUserSharedByFolderSharedId(workspace, folderDestinationItem.getIdSharedFolder());
						
						WorkspaceItem destinationSharedFolder = workspace.getItem(folderDestinationItem.getIdSharedFolder());

						NotificationsProducer np = new NotificationsProducer(Util.getAslSession(httpSession));
						
						np.notifyAddedItemToSharing(listContacts, sourceItem, (WorkspaceFolder) destinationSharedFolder);	
						
						logger.trace("The notifies was sent correctly");
//							np.notifyAddedItemToSharing(listContacts, (WorkspaceFolder) folderDestinationItem);	
					}	
				}
				else
					logger.trace("folder destination is not shared");
			
			}catch (Exception e) {
				logger.error("An error occurred in  verifyNotifyAddItemToShare ",e);
			}
		}else
			logger.warn("The notifies is failure in verifyNotifyAddItemToShare because folder destination item is null");	
	}
	
	
	/**
	 * 
	 * @param workspace
	 * @param idSharedFolder
	 * @return
	 * @throws Exception
	 */
	public static List<InfoContactModel> getListUserSharedByFolderSharedId(Workspace workspace, String idSharedFolder) throws Exception {
		
		logger.trace("getListUserSharedByFolderSharedId "+ idSharedFolder);

		try {

			WorkspaceItem wsItem = workspace.getItem(idSharedFolder);
			
			if(Util.isASharedFolder(wsItem)){
				
				WorkspaceSharedFolder wsFolder = (WorkspaceSharedFolder) wsItem;

				GWTWorkspaceBuilder builder = new GWTWorkspaceBuilder();

				List<String> listPortalLogin = wsFolder.getUsers();

				logger.trace("getListUserSharedByFolderSharedId return "+ listPortalLogin.size() + " user");

				return builder.buildGxtInfoContactsFromPortalLogins(listPortalLogin);
				
			}
			else{
				logger.trace("the item with id: "+idSharedFolder+ " is not  "+WorkspaceItemType.SHARED_FOLDER);
				
				//DEBUG
				//System.out.println("the item with id: "+folderSharedId+ " is not  "+WorkspaceItemType.SHARED_FOLDER);
			}
			return new ArrayList<InfoContactModel>();
		
		} catch (Exception e) {
			logger.error("Error in getListUserSharedByItemId ", e);
			throw new Exception(e.getMessage());
		}
	}



	/**
	 * 
	 * @param httpSession
	 * @param sourceItemIsShared
	 * @param sourceItem
	 * @param sourceSharedId
	 * @param folderDestinationItem
	 */

	public static void checkNotifyRemoveItemToShare(HttpSession httpSession, final boolean sourceItemIsShared, final WorkspaceItem sourceItem, final String sourceSharedId, final WorkspaceItem folderDestinationItem) {
		
		logger.trace("checkNotifyRemoveItemToShare:");
		
		try{
			
			if(folderDestinationItem!=null){ 
				
				String idSharedFolder = folderDestinationItem.getIdSharedFolder()!=null?folderDestinationItem.getIdSharedFolder():"";
				
				//share condition is true if source shared folder is not equal to destination shared folder
				boolean shareChangeCondition = sourceSharedId==null?false:(sourceSharedId.compareTo(idSharedFolder)!=0);
				
				logger.trace("checkNotifyRemoveItemToShare source item: "+sourceItem.getName()+" sourceSharedId: "+sourceSharedId + " folder destination: "+folderDestinationItem.getName() +" sourceItemIsShared: "+sourceItemIsShared);
				
//				System.out.println("shareChangeCondition remove item: "+  shareChangeCondition);
				
				logger.trace("shareChangeCondition remove item: "+  shareChangeCondition);
				
				//Notify Removed Item To Sharing?
				//if source Item is shared and folder destination is not shared or shareChangeCondition is true.. notifies removed item to sharing
				if(sourceItemIsShared && (!folderDestinationItem.isShared() || shareChangeCondition)){
						
						Workspace workspace = Util.getWorkspace(httpSession);
					
						//get contacts
						List<InfoContactModel> listContacts = getListUserSharedByFolderSharedId(workspace, sourceSharedId);

						
						WorkspaceItem sourceSharedFolder = workspace.getItem(sourceSharedId);
						
						//System.out.println(" name sourceSharedFolder:  "+ sourceSharedFolder.getName());
						
						NotificationsProducer np = new NotificationsProducer(Util.getAslSession(httpSession));
						
						np.notifyRemovedItemToSharing(listContacts, sourceItem, (WorkspaceFolder) sourceSharedFolder);
						
						logger.trace("The notifies was sent correctly");
						
				}

			}else
				logger.warn("The notifies is failure in verifyNotifyRemoveItemToShare because folder destination item is null");
			
		}catch (Exception e) {
			logger.error("An error occurred in checkNotifyRemoveItemToShare ",e);
		}

	}
	
	

}