#ifndef ENGINE_H
#define ENGINE_H

#include <array>
#include <tuple>
#include <numeric>
#include <memory>

#include "httprunner.h"
#include "jobpoolrunner.h"

#include "job.h"

template<class... Runners>
class CEngine {

    std::array<std::unique_ptr<IRunner>, sizeof...(Runners)> m_aRunners;

public:

    template<typename T, std::size_t... Indices>
    constexpr static int RunnerID(std::integer_sequence<size_t, Indices...>)
    {
        auto l = {std::is_same_v<T, Runners> * Indices...};
        return std::accumulate(l.begin(), l.end(), 0);
    }

    template<typename T>
    constexpr static int RunnerID()
    {
        return RunnerID<T>(std::index_sequence_for<Runners...>());
    }

    void RegisterRunners() {
        m_aRunners = {std::make_unique<Runners>()...};
    }

    template<typename T, std::enable_if_t<std::is_base_of_v<IJob, T>, bool> = true>
    int Dispatch(T Job) {
        return RunnerID<typename T::Runner>();
    }
};

using CEngineDDNet = CEngine<CJobPool, CHttpRunner>;

#else
#endif