EDIT

// $Id$

/**

* Copyright (C) 2007 EDIT

* European Distributed Institute of Taxonomy 

* http://www.e-taxonomy.eu

* 

* The contents of this file are subject to the Mozilla Public License Version 1.1

* See LICENSE.TXT at the top of this package for the full license terms.

*/

package eu.etaxonomy.cdm.api.service;

import java.util.ArrayList;

import java.util.List;

import org.hibernate.criterion.Criterion;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.security.core.GrantedAuthority;

import org.springframework.stereotype.Service;

import org.springframework.transaction.annotation.Propagation;

import org.springframework.transaction.annotation.Transactional;

import org.springframework.util.Assert;

import eu.etaxonomy.cdm.model.common.Group;

import eu.etaxonomy.cdm.model.common.User;

import eu.etaxonomy.cdm.persistence.dao.common.IGroupDao;

import eu.etaxonomy.cdm.persistence.dao.common.IUserDao;

import eu.etaxonomy.cdm.persistence.query.MatchMode;

import eu.etaxonomy.cdm.persistence.query.OrderHint;

/**

 * @author n.hoffmann

 * @created Mar 9, 2011

 * @version 1.0

 */

@Service

@Transactional(propagation = Propagation.SUPPORTS, readOnly = true)

public class GroupServiceImpl extends ServiceBase<Group,IGroupDao> implements IGroupService {

	protected IUserDao userDao;

	/* (non-Javadoc)

	 * @see org.springframework.security.provisioning.GroupManager#findAllGroups()

	 */

	@Override

	public List<String> findAllGroups() {

		return dao.listNames(null,null);

	}

	/* (non-Javadoc)

	 * @see org.springframework.security.provisioning.GroupManager#findUsersInGroup(java.lang.String)

	 */

	@Override

	public List<String> findUsersInGroup(String groupName) {

		Assert.hasText(groupName);

		Group group = dao.findGroupByName(groupName);

		List<String> users = dao.listMembers(group, null, null);

		return users;

	}

	/* (non-Javadoc)

	 * @see org.springframework.security.provisioning.GroupManager#createGroup(java.lang.String, java.util.List)

	 */

	@Override

	@Transactional(readOnly=false)

	public void createGroup(String groupName, List<GrantedAuthority> authorities) {

		Assert.hasText(groupName);

		Assert.notNull(authorities);

		Group group = Group.NewInstance(groupName);

		for(GrantedAuthority authority : authorities) {

			group.getGrantedAuthorities().add(authority);

		}

		dao.save(group);

	}

	/* (non-Javadoc)

	 * @see org.springframework.security.provisioning.GroupManager#deleteGroup(java.lang.String)

	 */

	@Override

	@Transactional(readOnly=false)

	public void deleteGroup(String groupName) {

		Assert.hasText(groupName);

		Group group = dao.findGroupByName(groupName);

		if(group != null){

			dao.delete(group);

		}

	}

	/* (non-Javadoc)

	 * @see org.springframework.security.provisioning.GroupManager#renameGroup(java.lang.String, java.lang.String)

	 */

	@Override

	@Transactional(readOnly=false)

	public void renameGroup(String oldName, String newName) {

		Assert.hasText(oldName);

		Assert.hasText(newName);

		Group group = dao.findGroupByName(oldName);

		group.setName(newName);

		dao.update(group);

	}

	/* (non-Javadoc)

	 * @see org.springframework.security.provisioning.GroupManager#addUserToGroup(java.lang.String, java.lang.String)

	 */

	@Override

	@Transactional(readOnly=false)

	public void addUserToGroup(String username, String groupName) {

		Assert.hasText(username);

		Assert.hasText(groupName);

		Group group = dao.findGroupByName(groupName);

		User user = userDao.findUserByUsername(username);

		if(group != null || user != null){

			if(group.addMember(user)) {

				dao.update(group);

			}

		}

	}

	/* (non-Javadoc)

	 * @see org.springframework.security.provisioning.GroupManager#removeUserFromGroup(java.lang.String, java.lang.String)

	 */

	@Override

	@Transactional(readOnly=false)

	public void removeUserFromGroup(String username, String groupName) {

		Assert.hasText(username);

		Assert.hasText(groupName);

		Group group = dao.findGroupByName(groupName);

		User user = userDao.findUserByUsername(username);

		if(group != null || user != null){

			if(group.removeMember(user)){

				dao.update(group);

			}

		}

	}

	/* (non-Javadoc)

	 * @see org.springframework.security.provisioning.GroupManager#findGroupAuthorities(java.lang.String)

	 */

	@Override

	public List<GrantedAuthority> findGroupAuthorities(String groupName) {

		Assert.hasText(groupName);

		Group group = dao.findGroupByName(groupName);

		if (group != null){

			return new ArrayList<GrantedAuthority>(group.getGrantedAuthorities());

		}

		return new ArrayList<GrantedAuthority>();

	}

	/* (non-Javadoc)

	 * @see org.springframework.security.provisioning.GroupManager#addGroupAuthority(java.lang.String, org.springframework.security.core.GrantedAuthority)

	 */

	@Override

	@Transactional(readOnly=false)

	public void addGroupAuthority(String groupName, GrantedAuthority authority) {

		Assert.hasText(groupName);

		Assert.notNull(authority);

		Group group = dao.findGroupByName(groupName);

		if (group != null){

			if(group.getGrantedAuthorities().add(authority)){

				dao.update(group);

			}

		}

	}

	/* (non-Javadoc)

	 * @see org.springframework.security.provisioning.GroupManager#removeGroupAuthority(java.lang.String, org.springframework.security.core.GrantedAuthority)

	 */

	@Override

	@Transactional(readOnly=false)

	public void removeGroupAuthority(String groupName,

			GrantedAuthority authority) {

		Assert.hasText(groupName);

		Assert.notNull(authority);

		Group group = dao.findGroupByName(groupName);

		if(group != null){

			if(group.getGrantedAuthorities().remove(authority)) {

				dao.update(group);

			}

		}

	}

	/* (non-Javadoc)

	 * @see eu.etaxonomy.cdm.api.service.ServiceBase#setDao(eu.etaxonomy.cdm.persistence.dao.common.ICdmEntityDao)

	 */

	@Override

	@Autowired

	protected void setDao(IGroupDao dao) {

		this.dao = dao;

	}

	@Autowired

	public void setUserDao(IUserDao userDao){

		this.userDao = userDao;

	}

	@Transactional(readOnly = true)

	public List<Group> listByName(String queryString,MatchMode matchmode, List<Criterion> criteria, Integer pageSize, Integer pageNumber, List<OrderHint> orderHints, List<String> propertyPaths) {

		 Integer numberOfResults = dao.countByName(queryString, matchmode, criteria);

		 List<Group> results = new ArrayList<Group>();

		 if(numberOfResults > 0) { 

				results = dao.findByName(queryString, matchmode, criteria, pageSize, pageNumber, orderHints, propertyPaths); 

		 }

		 return results;

	}

}