/*
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.apache.qpid.server.model.adapter;

import java.security.AccessControlException;
import java.util.Collection;
import java.util.Collections;
import java.util.Map;
import java.util.UUID;

import org.apache.qpid.server.model.Broker;
import org.apache.qpid.server.model.ConfiguredObject;
import org.apache.qpid.server.model.KeyStore;
import org.apache.qpid.server.model.LifetimePolicy;
import org.apache.qpid.server.model.State;
import org.apache.qpid.server.model.Statistics;
import org.apache.qpid.server.model.TrustStore;
import org.apache.qpid.server.util.MapValueConverter;

public abstract class AbstractKeyStoreAdapter extends AbstractAdapter
{
    private String _name;
    private String _password;

    protected AbstractKeyStoreAdapter(UUID id, Broker broker, Map<String, Object> attributes)
    {
        super(id, broker.getTaskExecutor());
        addParent(Broker.class, broker);
        _name = MapValueConverter.getStringAttribute(TrustStore.NAME, attributes);
        _password = MapValueConverter.getStringAttribute(TrustStore.PASSWORD, attributes);
        setMandatoryAttribute(TrustStore.PATH, attributes);
        setOptionalAttribute(TrustStore.PEERS_ONLY, attributes);
        setOptionalAttribute(TrustStore.TYPE, attributes);
        setOptionalAttribute(TrustStore.KEY_MANAGER_FACTORY_ALGORITHM, attributes);
        setOptionalAttribute(TrustStore.DESCRIPTION, attributes);
    }

    @Override
    public String getName()
    {
        return _name;
    }

    @Override
    public String setName(String currentName, String desiredName) throws IllegalStateException, AccessControlException
    {
        throw new IllegalStateException();
    }

    @Override
    public State getActualState()
    {
        return State.ACTIVE;
    }

    @Override
    public boolean isDurable()
    {
        return true;
    }

    @Override
    public void setDurable(boolean durable) throws IllegalStateException, AccessControlException, IllegalArgumentException
    {
        throw new IllegalStateException();
    }

    @Override
    public LifetimePolicy getLifetimePolicy()
    {
        return LifetimePolicy.PERMANENT;
    }

    @Override
    public LifetimePolicy setLifetimePolicy(LifetimePolicy expected, LifetimePolicy desired) throws IllegalStateException, AccessControlException,
            IllegalArgumentException
    {
        throw new IllegalStateException();
    }

    @Override
    public long getTimeToLive()
    {
        return 0;
    }

    @Override
    public long setTimeToLive(long expected, long desired) throws IllegalStateException, AccessControlException, IllegalArgumentException
    {
        throw new IllegalStateException();
    }

    @Override
    public Statistics getStatistics()
    {
        return NoStatistics.getInstance();
    }

    @Override
    public <C extends ConfiguredObject> Collection<C> getChildren(Class<C> clazz)
    {
        return Collections.emptySet();
    }

    @Override
    public <C extends ConfiguredObject> C createChild(Class<C> childClass, Map<String, Object> attributes, ConfiguredObject... otherParents)
    {
        throw new UnsupportedOperationException();
    }

    @Override
    public Object getAttribute(String name)
    {
        if(KeyStore.ID.equals(name))
        {
            return getId();
        }
        else if(KeyStore.NAME.equals(name))
        {
            return getName();
        }
        else if(KeyStore.STATE.equals(name))
        {
            return getActualState();
        }
        else if(KeyStore.DURABLE.equals(name))
        {
            return isDurable();
        }
        else if(KeyStore.LIFETIME_POLICY.equals(name))
        {
            return getLifetimePolicy();
        }
        else if(KeyStore.TIME_TO_LIVE.equals(name))
        {
            return getTimeToLive();
        }
        else if(KeyStore.CREATED.equals(name))
        {

        }
        else if(KeyStore.UPDATED.equals(name))
        {

        }
        else if(KeyStore.PASSWORD.equals(name))
        {
            return null; // for security reasons we don't expose the password
        }
        return super.getAttribute(name);
    }

    @Override
    protected boolean setState(State currentState, State desiredState)
    {
        return false;
    }

    public String getPassword()
    {
        return _password;
    }

    public void setPassword(String password)
    {
        _password = password;
    }

    private void setMandatoryAttribute(String name, Map<String, Object> attributeValues)
    {
        changeAttribute(name, null, MapValueConverter.getStringAttribute(name, attributeValues));
    }

    private void setOptionalAttribute(String name, Map<String, Object> attributeValues)
    {
        Object attrValue = attributeValues.get(name);
        if (attrValue != null)
        {
            if (attrValue instanceof Boolean)
            {
                changeAttribute(name, null, MapValueConverter.getBooleanAttribute(name, attributeValues));
            }
            else
            {
                changeAttribute(name, null, MapValueConverter.getStringAttribute(name, attributeValues));
            }
        }
    }
}
