/*
 * 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 <log4cxx/logstring.h>
#include <log4cxx/helpers/appenderattachableimpl.h>
#include <log4cxx/appender.h>
#include <log4cxx/spi/loggingevent.h>
#include <algorithm>
#include <log4cxx/helpers/pool.h>

using namespace log4cxx;
using namespace log4cxx::helpers;
using namespace log4cxx::spi;

IMPLEMENT_LOG4CXX_OBJECT(AppenderAttachableImpl)


AppenderAttachableImpl::AppenderAttachableImpl(Pool& pool)
   : appenderList(),
     mutex(pool) {
}

void AppenderAttachableImpl::addRef() const {
    ObjectImpl::addRef();
}

void AppenderAttachableImpl::releaseRef() const {
    ObjectImpl::releaseRef();
}


void AppenderAttachableImpl::addAppender(const AppenderPtr& newAppender)
{
    // Null values for newAppender parameter are strictly forbidden.
    if(newAppender == 0)
    {
        return;
    }

    AppenderList::iterator it = std::find(
        appenderList.begin(), appenderList.end(), newAppender);

    if (it == appenderList.end())
    {
        appenderList.push_back(newAppender);
    }
}

int AppenderAttachableImpl::appendLoopOnAppenders(
    const spi::LoggingEventPtr& event,
    Pool& p)
{
    for (AppenderList::iterator it = appenderList.begin();
         it != appenderList.end();
         it++) {
        (*it)->doAppend(event, p);
    }
        return appenderList.size();
}

AppenderList AppenderAttachableImpl::getAllAppenders() const
{
    return appenderList;
}

AppenderPtr AppenderAttachableImpl::getAppender(const LogString& name) const
{
        if (name.empty())
        {
                return 0;
        }

        AppenderList::const_iterator it, itEnd = appenderList.end();
        AppenderPtr appender;
        for(it = appenderList.begin(); it != itEnd; it++)
        {
                appender = *it;
                if(name == appender->getName())
                {
                        return appender;
                }
        }

        return 0;
}

bool AppenderAttachableImpl::isAttached(const AppenderPtr& appender) const
{
        if (appender == 0)
    {
        return false;
    }

    AppenderList::const_iterator it = std::find(
        appenderList.begin(), appenderList.end(), appender);

    return it != appenderList.end();
}

void AppenderAttachableImpl::removeAllAppenders()
{
    AppenderList::iterator it, itEnd = appenderList.end();
    AppenderPtr a;
    for(it = appenderList.begin(); it != itEnd; it++)
    {
        a = *it;
        a->close();
    }

    appenderList.clear();
}

void AppenderAttachableImpl::removeAppender(const AppenderPtr& appender)
{
    if (appender == 0)
        return;

    AppenderList::iterator it = std::find(
        appenderList.begin(), appenderList.end(), appender);

    if (it != appenderList.end())
    {
        appenderList.erase(it);
    }
}

void AppenderAttachableImpl::removeAppender(const LogString& name)
{
        if (name.empty())
        {
                return;
        }

        AppenderList::iterator it, itEnd = appenderList.end();
        AppenderPtr appender;
        for(it = appenderList.begin(); it != itEnd; it++)
        {
                appender = *it;
                if(name == appender->getName())
                {
                        appenderList.erase(it);
                        return;
                }
        }
}