#include "core/jail/jgame.hpp"

#include "core/system/fiber.hpp"

namespace {

bool quitting = false;
Uint32 update_ticks = 0;
Uint32 update_time = 0;
Uint32 cycle_counter = 0;
Uint32 last_delta_time = 0;

}  // namespace

void JG_Init() {
    SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO);
    update_time = SDL_GetTicks();
    last_delta_time = update_time;
}

void JG_Finalize() {
    SDL_Quit();
}

void JG_QuitSignal() {
    quitting = true;
}

bool JG_Quitting() {
    return quitting;
}

void JG_SetUpdateTicks(Uint32 milliseconds) {
    update_ticks = milliseconds;
}

bool JG_ShouldUpdate() {
    const Uint32 now = SDL_GetTicks();
    if (now - update_time > update_ticks) {
        update_time = now;
        cycle_counter++;
        return true;
    }
    // Encara no toca update: cedim el control al Director per a que puga
    // processar events, animar l'overlay i mantindre l'àudio viu. Sense
    // aquest yield, els spin-waits típics de les cinemàtiques
    // (`while (!JG_ShouldUpdate()) { JI_Update(); ... }`) congelarien
    // tot el main loop — el fiber no cediria mai.
    GameFiber::yield();
    return false;
}

Uint32 JG_GetCycleCounter() {
    return cycle_counter;
}

Uint32 JG_GetDeltaMs() {
    const Uint32 now = SDL_GetTicks();
    const Uint32 delta = now - last_delta_time;
    last_delta_time = now;
    return delta;
}