/*
 * 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.
 */

#include "Network.h"

#include <decaf/lang/Runnable.h>
#include <decaf/lang/Exception.h>
#include <decaf/lang/exceptions/IllegalStateException.h>
#include <decaf/util/LinkedList.h>
#include <decaf/util/concurrent/Mutex.h>
#include <decaf/internal/util/ResourceLifecycleManager.h>

#include <apr_signal.h>

using namespace decaf;
using namespace decaf::internal;
using namespace decaf::internal::net;
using namespace decaf::internal::util;
using namespace decaf::lang;
using namespace decaf::lang::exceptions;
using namespace decaf::util;
using namespace decaf::util::concurrent;

////////////////////////////////////////////////////////////////////////////////
Network* Network::networkRuntime = NULL;

////////////////////////////////////////////////////////////////////////////////
namespace decaf {
namespace internal {
namespace net {

    class NetworkData {
    private:

        NetworkData(const NetworkData&);
        NetworkData& operator=(const NetworkData&);

    public:

        ResourceLifecycleManager resources;
        Mutex lock;
        LinkedList<Runnable*> shutdownTasks;

        NetworkData() : resources(), lock(), shutdownTasks() {}

        ~NetworkData() {
            try {
                std::auto_ptr<Iterator<Runnable*> > iter(shutdownTasks.iterator());
                while (iter->hasNext()) {
                    Runnable* task = iter->next();
                    try {
                        task->run();
                        delete task;
                    } catch (...) {
                    }
                }
            } catch (...) {
            }
        }
    };

}}}

////////////////////////////////////////////////////////////////////////////////
Network::Network() : data(new NetworkData()) {
}

////////////////////////////////////////////////////////////////////////////////
Network::~Network() {
    try {
        delete this->data;
    }
    DECAF_CATCH_NOTHROW( Exception)
    DECAF_CATCHALL_NOTHROW()}

////////////////////////////////////////////////////////////////////////////////
void Network::addNetworkResource(Resource* value) {
    this->data->resources.addResource(value);
}

////////////////////////////////////////////////////////////////////////////////
Network* Network::getNetworkRuntime() {

    if (Network::networkRuntime == NULL) {
        throw IllegalStateException(__FILE__, __LINE__, "Network Runtime is not Initialized.");
    }

    return Network::networkRuntime;
}

////////////////////////////////////////////////////////////////////////////////
Mutex* Network::getRuntimeLock() {
    return &(this->data->lock);
}

////////////////////////////////////////////////////////////////////////////////
void Network::initializeNetworking() {

#ifndef WIN32
    // Remove the SIGPIPE so that the application isn't aborted if a connected
    // socket breaks during a read or write.
    apr_signal_block(SIGPIPE);
#endif

    Network::networkRuntime = new Network();
}

////////////////////////////////////////////////////////////////////////////////
void Network::shutdownNetworking() {
    delete Network::networkRuntime;
}

////////////////////////////////////////////////////////////////////////////////
void Network::addShutdownTask(decaf::lang::Runnable* task) {
    if (task != NULL) {
        this->data->shutdownTasks.add(task);
    }
}