Subversion Repositories general

package ak.hostadmiral.core.model;

import java.util.Collection;

import java.util.ArrayList;

import java.util.Iterator;

import java.util.Map;

import java.util.Comparator;

import ak.hostadmiral.util.ConfigInit;

import ak.hostadmiral.util.CollectionInfo;

import ak.hostadmiral.util.ModelException;

import ak.hostadmiral.util.ModelSecurityException;

import ak.hostadmiral.core.model.store.MailAliasStore;

public class MailAliasManager

	implements

		ConfigInit,

		UserBeforeDeleteListener,

		UserDeletingListener,

		InetDomainBeforeDeleteListener,

		InetDomainDeletingListener

{

	private MailAliasStore store;

	private Collection createdListeners      = new ArrayList();

	private Collection modifiedListeners     = new ArrayList();

	private Collection beforeDeleteListeners = new ArrayList();

	private Collection deletingListeners     = new ArrayList();

	private Collection deletedListeners      = new ArrayList();

	public MailAliasManager()

		throws ModelException

	{

		UserManager.getInstance().addBeforeDeleteListener(this);

	}

	public MailAlias create(User editor)

		throws ModelException

	{

		if(!allowedToCreate(editor)) throw new ModelSecurityException();

		MailAlias alias = new MailAlias();

		alias.setDestinations(new ArrayList());

		return alias;

	}

	public boolean allowedToCreate(User editor)

		throws ModelException

	{

		return MailAlias.allowedToCreate(this, editor);

	}

	public MailAlias get(User editor, Long id)

		throws ModelException

	{

		MailAlias alias = store.get(id);

		if(!alias.viewableBy(editor))

			throw new ModelSecurityException();

		return alias;

	}

	public boolean addressExists(User editor, MailAlias alias, String address)

		throws ModelException

	{

		if(alias.getDomain() == null)

			throw new ModelException("Cannot check unique address for mail alias without domain");

		return store.addressExists(alias, address);

	}

	public MailAlias findForName(User editor, String name)

		throws ModelException

	{

		MailAlias alias = store.findForName(name);

		if(!alias.viewableBy(editor))

			throw new ModelSecurityException();

		return alias;

	}

	public void save(User editor, MailAlias mailAlias)

		throws ModelException

	{

		if(!mailAlias.editableBy(editor))

			throw new ModelSecurityException();

        boolean isNew = mailAlias.isNew();

		//mailAlias.setModUser(editor);  // FIXME

		store.save(mailAlias);

        // inform listeners

        if(isNew) {

        	for(Iterator i = createdListeners.iterator(); i.hasNext(); ) {

        		MailAliasCreatedListener listener = (MailAliasCreatedListener)i.next();

    			listener.mailAliasCreated(editor, mailAlias);

        	}

        }

        else {

            MailAlias oldMailAlias = mailAlias.getOrigin();

            if(oldMailAlias == null) oldMailAlias = mailAlias;

        	for(Iterator i = modifiedListeners.iterator(); i.hasNext(); ) {

        		MailAliasModifiedListener listener = (MailAliasModifiedListener)i.next();

    			listener.mailAliasModified(editor, mailAlias, oldMailAlias);

        	}

        }

        // reset backup

        mailAlias.resetOrigin();

	}

    public void addCreatedListener(MailAliasCreatedListener listener)

    {

    	createdListeners.add(listener);

    }

    public void removeCreatedListener(MailAliasCreatedListener listener)

    {

    	createdListeners.remove(listener);

    }

    public void addModifiedListener(MailAliasModifiedListener listener)

    {

    	modifiedListeners.add(listener);

    }

    public void removeModifiedListener(MailAliasModifiedListener listener)

    {

    	modifiedListeners.remove(listener);

    }

    public void addBeforeDeleteListener(MailAliasBeforeDeleteListener listener)

    {

    	beforeDeleteListeners.add(listener);

    }

    public void removeBeforeDeleteListener(MailAliasBeforeDeleteListener listener)

    {

    	beforeDeleteListeners.remove(listener);

    }

    public void addDeletingListener(MailAliasDeletingListener listener)

    {

    	deletingListeners.add(listener);

    }

    public void removeDeletingListener(MailAliasDeletingListener listener)

    {

    	deletingListeners.remove(listener);

    }

    public void addDeletedListener(MailAliasDeletedListener listener)

    {

    	deletedListeners.add(listener);

    }

    public void removeDeletedListener(MailAliasDeletedListener listener)

    {

    	deletedListeners.remove(listener);

    }

    public Collection beforeDelete(User editor, MailAlias mailAlias, Collection known)

		throws ModelException

    {

    	Collection cascade = new ArrayList();

    	for(Iterator i = beforeDeleteListeners.iterator(); i.hasNext(); ) {

    		MailAliasBeforeDeleteListener listener = (MailAliasBeforeDeleteListener)i.next();

			Collection subcascade = listener.mailAliasBeforeDelete(editor, mailAlias, known);

    		if(subcascade != null)

    			cascade.addAll(subcascade);

    	}

    	return cascade;

    }

	public void delete(User editor, MailAlias mailAlias)

		throws ModelException

	{

	    // check rights

		if(!mailAlias.deleteableBy(editor))

			throw new ModelSecurityException();

        // inform deleting listeners

    	for(Iterator i = deletingListeners.iterator(); i.hasNext(); ) {

    		MailAliasDeletingListener listener = (MailAliasDeletingListener)i.next();

			listener.mailAliasDeleting(editor, mailAlias);

    	}

        // backup copy

        MailAlias oldMailAlias = new MailAlias(mailAlias);

        // delete it

		store.delete(mailAlias);

        // inform deleted listeners

    	for(Iterator i = deletedListeners.iterator(); i.hasNext(); ) {

    		MailAliasDeletedListener listener = (MailAliasDeletedListener)i.next();

			listener.mailAliasDeleted(editor, oldMailAlias);

    	}

	}

	public Collection listMailAliases(User editor)

		throws ModelException

	{

		return listMailAliases(null, 0, 0, null, editor);

	}

	public Collection listMailAliases(CollectionInfo info, int rowsPerPage, int pageNumber,

			Integer[] sortingKeys, User editor)

		throws ModelException

	{

		if(editor.isSuperuser())

			return store.listAllMailAliases(info, rowsPerPage, pageNumber, sortingKeys);

		else

			return store.listMailAliases(info, rowsPerPage, pageNumber, sortingKeys, editor);

	}

	public boolean areMailAliasesAvailable(User editor)

		throws ModelException

	{

		if(editor.isSuperuser())

			return true;

		else

			return store.countMailAliasesAvailable(editor) > 0;

	}

	public Collection userBeforeDelete(User editor, User user, Collection known)

		throws ModelException

	{

        Collection mailAliases = store.listOwnMailAliases(user);

		return iterateBeforeDelete(editor, mailAliases, known);

    }

	public void userDeleting(User editor, User user)

		throws ModelException

	{

        Collection mailAliases = store.listOwnMailAliases(user);

		for(Iterator i = mailAliases.iterator(); i.hasNext(); ) {

			delete(editor, (MailAlias)i.next());

		}

    }

	public Collection inetDomainBeforeDelete(User editor, InetDomain domain, Collection known)

		throws ModelException

	{

        Collection mailAliases = store.listMailAliasesForDomain(domain);

		return iterateBeforeDelete(editor, mailAliases, known);

    }

	public void inetDomainDeleting(User editor, InetDomain domain)

		throws ModelException

	{

        Collection mailAliases = store.listMailAliasesForDomain(domain);

		for(Iterator i = mailAliases.iterator(); i.hasNext(); ) {

			delete(editor, (MailAlias)i.next());

		}

    }

	private Collection iterateBeforeDelete(User editor, Collection mailAliases, Collection known)

		throws ModelException

	{

    	Collection cascade = new ArrayList();

		for(Iterator i = mailAliases.iterator(); i.hasNext(); ) {

			MailAlias mailAlias = (MailAlias)i.next();

            if(mailAlias.viewableBy(editor)) {

				if(mailAlias.deleteableBy(editor))

					cascade.add(new CascadeDeleteElement(mailAlias, CascadeDeleteElement.DELETE,

						this.beforeDelete(editor, mailAlias, known)));

				else

					cascade.add(new CascadeDeleteElement(mailAlias, CascadeDeleteElement.FORBIDDEN,

						null));

			}

			else {

				cascade.add(new CascadeDeleteElement(MailAlias.createLimitedCopy(mailAlias),

					CascadeDeleteElement.FORBIDDEN, null));

			}

		}

    	return cascade;

	}

	public static final Integer SORT_ADDRESS = new Integer(1);

	public static final Integer SORT_DOMAIN  = new Integer(2);

	public static final Comparator ADDRESS_COMPARATOR = new AddressComparator();

	private static class AddressComparator

		implements Comparator

	{

		public int compare(Object o1, Object o2)

		{

			if(!(o1 instanceof MailAlias) || !(o2 instanceof MailAlias))

				throw new ClassCastException("not a MailAlias");

		    MailAlias a1 = (MailAlias)o1;

		    MailAlias a2 = (MailAlias)o2;

		    if(a1 == null && a2 == null)

		    	return 0;

		    else if(a1 == null && a2 != null)

		    	return -1;

		    else if(a1 != null && a2 == null)

		    	return 1;

		    else

		    	return a1.getAddress().compareToIgnoreCase(a2.getAddress());

		}

		public boolean equals(Object obj)

		{

			return (obj instanceof AddressComparator);

		}

	}

	public void init(Map params)

		throws ModelException

	{

		try {

    		mailAliasManager = this;

			Class c = Class.forName((String)params.get("store"));

			store = (MailAliasStore)c.newInstance();

        }

        catch(Exception ex) {

        	throw new ModelException(ex);

        }

	}

	private static MailAliasManager mailAliasManager = null;

	public static MailAliasManager getInstance()

	{

		return mailAliasManager;

	}

}