//
// Copyright (c) 2015 David Schury, Gabi Melman
// Distributed under the MIT License (http://opensource.org/licenses/MIT)
//

#pragma once

#include <algorithm>
#include <memory>
#include <mutex>
#include <list>

#include "../details/log_msg.h"
#include "../details/null_mutex.h"
#include "./base_sink.h"
#include "./sink.h"

namespace spdlog
{
namespace sinks
{
template<class Mutex>
class dist_sink: public base_sink<Mutex>
{
public:
    explicit dist_sink() :_sinks() {}
    dist_sink(const dist_sink&) = delete;
    dist_sink& operator=(const dist_sink&) = delete;
    virtual ~dist_sink() = default;

protected:
    void _sink_it(const details::log_msg& msg) override
    {
        for (auto iter = _sinks.begin(); iter != _sinks.end(); iter++)
            (*iter)->log(msg);
    }

    std::vector<std::shared_ptr<sink>> _sinks;

public:
    void flush() override
    {
        std::lock_guard<Mutex> lock(base_sink<Mutex>::_mutex);
        for (auto iter = _sinks.begin(); iter != _sinks.end(); iter++)
            (*iter)->flush();
    }

    void add_sink(std::shared_ptr<sink> sink)
    {
        std::lock_guard<Mutex> lock(base_sink<Mutex>::_mutex);
        if (sink &&
                _sinks.end() == std::find(_sinks.begin(), _sinks.end(), sink))
        {
            _sinks.push_back(sink);
        }
    }

    void remove_sink(std::shared_ptr<sink> sink)
    {
        std::lock_guard<Mutex> lock(base_sink<Mutex>::_mutex);
        auto pos = std::find(_sinks.begin(), _sinks.end(), sink);
        if (pos != _sinks.end())
        {
            _sinks.erase(pos);
        }
    }
};

typedef dist_sink<std::mutex> dist_sink_mt;
typedef dist_sink<details::null_mutex> dist_sink_st;
}
}