/*
 * Copyright 2012-2014 Red Hat, Inc.
 *
 * This file is part of Thermostat.
 *
 * Thermostat is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published
 * by the Free Software Foundation; either version 2, or (at your
 * option) any later version.
 *
 * Thermostat 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
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Thermostat; see the file COPYING.  If not see
 * <http://www.gnu.org/licenses/>.
 *
 * Linking this code with other modules is making a combined work
 * based on this code.  Thus, the terms and conditions of the GNU
 * General Public License cover the whole combination.
 *
 * As a special exception, the copyright holders of this code give
 * you permission to link this code with independent modules to
 * produce an executable, regardless of the license terms of these
 * independent modules, and to copy and distribute the resulting
 * executable under terms of your choice, provided that you also
 * meet, for each linked independent module, the terms and conditions
 * of the license of that module.  An independent module is a module
 * which is not derived from or based on this code.  If you modify
 * this code, you may extend this exception to your version of the
 * library, but you are not obligated to do so.  If you do not wish
 * to do so, delete this exception statement from your version.
 */

package com.redhat.thermostat.web.server.auth.spi;

import java.security.Principal;
import java.security.acl.Group;
import java.util.Enumeration;
import java.util.Map;
import java.util.Set;
import java.util.Vector;

import javax.security.auth.Subject;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.login.LoginException;
import javax.security.auth.spi.LoginModule;

public class StubSuccessDelegateLoginModule implements LoginModule {

    private boolean initialized = false;
    private boolean loggedIn = false;
    private Subject subject;
    
    @Override
    public void initialize(Subject subject, CallbackHandler callbackHandler,
            Map<String, ?> sharedState, Map<String, ?> options) {
        this.subject = subject;
        this.initialized = true;
    }

    @Override
    public boolean login() throws LoginException {
        if (!initialized) {
            throw new AssertionError("logging in when not initialized");
        }
        this.loggedIn = true;
        return true;
    }

    @Override
    public boolean commit() throws LoginException {
        if (!loggedIn) {
            throw new AssertionError("committing when not logged in");
        }
        // fake adding two principals. One user and one role
        // principal.
        Set<Principal> principals = this.subject.getPrincipals();
        principals.add(new Principal() {

            @Override
            public String getName() {
                return "testUser";
            }
            
        });
        principals.add(new Group() {

            @Override
            public String getName() {
                return "testRole";
            }

            @Override
            public boolean addMember(Principal user) {
                // don't care
                return false;
            }

            @Override
            public boolean removeMember(Principal user) {
                // don't care
                return false;
            }

            @Override
            public boolean isMember(Principal member) {
                // don't care
                return false;
            }

            @Override
            public Enumeration<? extends Principal> members() {
                Vector<Principal> stub = new Vector<>();
                return stub.elements();
            }
            
        });
        return true;
    }

    @Override
    public boolean abort() throws LoginException {
        throw new AssertionError("Should never be called");
    }

    @Override
    public boolean logout() throws LoginException {
        return true;
    }

}

