/*
 * Copyright 2010-2016 Steve Chaloner
 *
 * 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 be.objectify.deadbolt.java.actions;

import be.objectify.deadbolt.java.ExecutionContextProvider;
import be.objectify.deadbolt.java.cache.HandlerCache;
import play.Configuration;
import play.mvc.Http;
import play.mvc.Result;
import scala.concurrent.ExecutionContextExecutor;

import javax.inject.Inject;
import java.util.Optional;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.CompletionStage;

/**
 * Implements the {@link Unrestricted} functionality, i.e. there are no restrictions on the resource.
 *
 * @author Steve Chaloner (steve@objectify.be)
 */
public class UnrestrictedAction extends AbstractDeadboltAction<Unrestricted>
{
    @Inject
    public UnrestrictedAction(final HandlerCache handlerCache,
                              final Configuration config,
                              final ExecutionContextProvider ecProvider)
    {
        super(handlerCache,
              config,
              ecProvider);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public CompletionStage<Result> execute(final Http.Context ctx) throws Exception
    {
        final ExecutionContextExecutor executor = executor();
        final CompletableFuture<Result> eventualResult = CompletableFuture.supplyAsync(() -> isActionUnauthorised(ctx),
                                                                                       executor)
                                                                          .thenComposeAsync(unauthorised -> unauthorised ? unauthorizeAndFail(ctx,
                                                                                                                                              getDeadboltHandler(configuration
                                                                                                                                                                         .handlerKey()),
                                                                                                                                              Optional.ofNullable(configuration
                                                                                                                                                                          .content()))
                                                                                                                         : authorizeAndExecute(ctx)
                                                                                  , executor);
        return maybeBlock(eventualResult);
    }
}