#include "scenes/banner_scene.hpp"

#include <cstdlib>

#include "core/jail/jail_audio.hpp"
#include "core/jail/jdraw8.hpp"
#include "core/jail/jinput.hpp"
#include "game/info.hpp"
#include "scenes/scene_utils.hpp"

namespace scenes {

    void BannerScene::onEnter() {
        playMusic("music/banner.ogg");

        gfx_ = SurfaceHandle("gfx/ffase.gif");

        JD8_ClearScreen(0);
        // Títols superior i inferior del banner (compartits per tots els nivells)
        JD8_Blit(81, 24, gfx_, 81, 155, 168, 21);
        JD8_Blit(39, 150, gfx_, 39, 175, 248, 20);

        // Número de piràmide: les 4 variants del vell `doBanner` es reduïxen
        // a coordenades (sx,sy) calculades a partir de l'índex 0..3.
        const int idx = info::ctx.num_piramide - 2;  // 2..5 → 0..3
        if (idx >= 0 && idx <= 3) {
            const int sx = (idx % 2) * 160;
            const int sy = (idx / 2) * 75;
            JD8_Blit(82, 60, gfx_, sx, sy, 160, 75);
        }

        // PaletteFade copia internament amb memcpy; alliberem la paleta temporal.
        JD8_Palette pal = JD8_LoadPalette("gfx/ffase.gif");
        fade_.startFadeTo(pal);
        std::free(pal);

        phase_ = Phase::FadingIn;
        remaining_ms_ = 5000;
    }

    void BannerScene::tick(int delta_ms) {
        switch (phase_) {
            case Phase::FadingIn:
                fade_.tick(delta_ms);
                if (fade_.done()) phase_ = Phase::Showing;
                break;

            case Phase::Showing:
                if (JI_AnyKey()) {
                    remaining_ms_ = 0;
                } else {
                    remaining_ms_ -= delta_ms;
                }
                if (remaining_ms_ <= 0) {
                    JA_FadeOutMusic(250);
                    fade_.startFadeOut();
                    phase_ = Phase::FadingOut;
                }
                break;

            case Phase::FadingOut:
                fade_.tick(delta_ms);
                if (fade_.done()) phase_ = Phase::Done;
                break;

            case Phase::Done:
                break;
        }
    }

}  // namespace scenes