#pragma once

#ifdef MT_NATIVE_HAS_LIVE_CLIENT
#include <string>

namespace mt_host {

// Command-line overrides, defined in frame_policy.cpp.
extern int g_fps_cap;
extern int g_refresh_rate;
extern int g_fps_mode;
extern int g_idle_fps;
extern double g_idle_after_s;

// The frame-rate setting (system option dialog, platform/EterBase/FrameRateMode.h) turned into a frame
// rate, a display refresh rate and the ADPF budget; --fps-cap / --refresh-rate pin those for a test run.
// Frames the player does not watch closely cost the same power as the ones they do, so after a while
// without input (and no auto hunt running) the rate drops to --idle-fps until the next touch. The display
// is asked for 60 Hz unless the setting wants more: a 120 Hz panel scanning out a 60 fps game costs power
// for nothing.
class FrameRatePolicy {
public:
    struct Decision {
        int mode = -1;
        int fps = 0;         // frames per second the loop aims at
        int display_hz = 0;  // the refresh rate asked of the display
        bool idle = false;
        bool operator==(const Decision&) const = default;
    };

    bool pinned() const { return g_fps_cap > 0 || g_refresh_rate > 0; }

    void load();

    Decision decide(double idle_seconds, bool auto_hunt);

    int max_hz() const { return max_hz_; }

private:
    static std::string settings_path();

    void save(int mode);

    std::string path_;
    int saved_mode_ = -1;
    int max_hz_ = 60;
};

} // namespace mt_host
#endif