Callbacks.hpp

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#pragma once
 
#include <functional>
#include <libchess/moves/Move.hpp>
#include <string>
 
namespace ben_bot::search {
 
struct Options;
struct Result;
 
using chess::moves::Move;

struct Callbacks final {
    using Callback = std::function<void(const Result&)>;

    std::function<void(const Options&)> onSearchStart;

    Callback onSearchComplete;

    Callback onIteration;

    std::function<void(Move, size_t)> onRootMove;

    void search_start(const Options& options) const
    {
        if (onSearchStart != nullptr)
            onSearchStart(options);
    }

    void search_complete(const Result& result) const
    {
        if (onSearchComplete != nullptr) {
            [[likely]];
            onSearchComplete(result);
        }
    }

    void iteration_complete(const Result& result) const
    {
        if (onIteration != nullptr) {
            [[likely]];
            onIteration(result);
        }
    }

    void root_move(const Move move, const size_t idx) const
    {
        if (onRootMove != nullptr) {
            onRootMove(move, idx);
        }
    }

    [[nodiscard]] static auto make_uci_printer(
        std::function<bool()> isDebugMode)
        -> Callbacks;

    [[nodiscard]] static auto make_pretty_printer(
        std::function<std::string(Move)>&& printMove)
        -> Callbacks;
};
 
} // namespace ben_bot::search