/*
 * Copyright (c) 2010 Lockheed Martin Corporation
 *
 * 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.eurekastreams.server.action.execution.opensocial;

import java.util.Date;
import java.util.UUID;

import org.apache.shindig.social.opensocial.oauth.OAuthEntry;
import org.eurekastreams.commons.actions.ExecutionStrategy;
import org.eurekastreams.commons.actions.context.PrincipalActionContext;
import org.eurekastreams.commons.exceptions.ExecutionException;
import org.eurekastreams.server.domain.OAuthDomainEntry;
import org.eurekastreams.server.persistence.mappers.DomainMapper;
import org.eurekastreams.server.persistence.mappers.InsertMapper;
import org.eurekastreams.server.persistence.mappers.requests.PersistenceRequest;

/**
 * This class converts a Request Token to an Access token.
 * 
 */
public class UpdateRequestToAccessTokenExecution implements ExecutionStrategy<PrincipalActionContext>
{
    /**
     * Instance of domain mapper that can delete an entry.
     */
    private final DomainMapper<String, Boolean> deleteMapper;

    /**
     * Instance of an insert mapper to add a new entry.
     */
    private final InsertMapper<OAuthDomainEntry> insertMapper;

    /**
     * Instance of {@link OAuthEntryConversionStrategy} for this class.
     */
    private final OAuthEntryConversionStrategy conversionStrat;

    /**
     * Constructor.
     * 
     * @param inDomainMapper
     *            - instance of an {@link DomainMapper}.
     * @param inInsertMapper
     *            - instance of an {@link InsertMapper}.
     * @param inConversionStrat
     *            - instance of an {@link OAuthEntryConversionStrategy}.
     */
    public UpdateRequestToAccessTokenExecution(final DomainMapper<String, Boolean> inDomainMapper,
            final InsertMapper<OAuthDomainEntry> inInsertMapper, final OAuthEntryConversionStrategy inConversionStrat)
    {
        deleteMapper = inDomainMapper;
        insertMapper = inInsertMapper;
        conversionStrat = inConversionStrat;
    }

    /**
     * {@inheritDoc}. Convert the supplied Request Token into an Access Token.
     */
    @Override
    public OAuthEntry execute(final PrincipalActionContext inActionContext) throws ExecutionException
    {
        OAuthEntry requestEntry = (OAuthEntry) inActionContext.getParams();
        OAuthEntry accessEntry = new OAuthEntry(requestEntry);

        accessEntry.setToken(UUID.randomUUID().toString());
        accessEntry.setTokenSecret(UUID.randomUUID().toString());

        accessEntry.setType(OAuthEntry.Type.ACCESS);
        accessEntry.setIssueTime(new Date());

        deleteMapper.execute(requestEntry.getToken());
        insertMapper.execute(new PersistenceRequest<OAuthDomainEntry>(conversionStrat.convertToEntryDTO(accessEntry)));

        return accessEntry;
    }

}