/**
 * Copyright (c) Istituto Nazionale di Fisica Nucleare (INFN). 2006-2016
 *
 * Licensed under the Apache 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.apache.org/licenses/LICENSE-2.0
 *
 * 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.glite.security.voms.admin.taglib;

import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.TagSupport;

import org.glite.security.voms.admin.error.VOMSAuthorizationException;
import org.glite.security.voms.admin.operations.users.FindUnassignedRoles;
import org.glite.security.voms.admin.persistence.dao.VOMSUserDAO;
import org.glite.security.voms.admin.persistence.model.VOMSGroup;
import org.glite.security.voms.admin.persistence.model.VOMSUser;

public class UnassignedRoleMapTag extends TagSupport {

  /**
	 * 
	 */
  private static final long serialVersionUID = 1L;

  String userId;
  String var;

  @Override
  public int doStartTag() throws JspException {

    VOMSUser u = VOMSUserDAO.instance().findById(Long.parseLong(userId));

    Map unassignedRoles = new HashMap();

    Iterator<VOMSGroup> groups = u.getGroups().iterator();

    while (groups.hasNext()) {

      VOMSGroup g = (VOMSGroup) groups.next();
      List roles;

      try {

        roles = (List) FindUnassignedRoles.instance(u.getId(), g.getId())
          .execute();

      } catch (VOMSAuthorizationException e) {
        roles = Collections.EMPTY_LIST;
      }

      unassignedRoles.put(g.getId(), roles);
    }

    pageContext.setAttribute(var, unassignedRoles);

    return SKIP_BODY;
  }

  public String getUserId() {

    return userId;
  }

  public void setUserId(String userId) {

    this.userId = userId;
  }

  public String getVar() {

    return var;
  }

  public void setVar(String var) {

    this.var = var;
  }

}