#include "game/scenes/intro_scene.hpp"

#include <SDL3/SDL.h>

#include <algorithm>
#include <cstdint>
#include <iostream>
#include <string>
#include <utility>

#include "core/input/global_inputs.hpp"
#include "core/rendering/notifier.hpp"
#include "core/rendering/render_info.hpp"
#include "core/rendering/screen.hpp"
#include "core/rendering/text.hpp"
#include "core/system/event_buffer.hpp"
#include "core/ui/ui_config.hpp"
#include "game/options.hpp"
#include "game/scenes/placeholder_input.hpp"
#include "game/scenes/scene_flow.hpp"
#include "utils/defaults.hpp"
#include "utils/defines.hpp"

namespace {

    constexpr int NAME_Y_OFFSET = -8;
    constexpr int TIMER_Y_OFFSET = 8;
    // TODO: migrar a un logger unificat quan es decideixi (veure INC-03 a
    // docs/audit-core-rendering.md).
    const char* const SCENE_NAME = "INTRO";

}  // namespace

IntroScene::IntroScene(std::shared_ptr<Text> font, DebugConfig::StartingPlayers starting_players)
    : font_(std::move(font)),
      starting_players_(starting_players) {
    std::cout << "[scene] " << SCENE_NAME << " start (players=" << DebugConfig::toString(starting_players_) << ")\n";
}

IntroScene::~IntroScene() = default;

void IntroScene::update(int delta_ms) {
    GlobalInputs::update(delta_ms);
    if (GlobalInputs::wantsQuit()) {
        wants_quit_ = true;
        return;
    }

    timer_ms_ -= delta_ms;

    const bool SKIPPED = std::ranges::any_of(EventBuffer::events, [](const SDL_Event& ev) {
        return ev.type == SDL_EVENT_KEY_DOWN && !Placeholder::isReservedScancode(ev.key.scancode);
    });

    if (timer_ms_ <= 0 || SKIPPED) {
        exit_request_ = ExitRequest{
            .next = SceneId::GAME,
            .params = GameParams{.starting_players = starting_players_},
        };
    }

    Notifier::get().update(delta_ms);
    RenderInfo::get().update(delta_ms, Options::buildRenderInfoFrame(UiConfig::get().renderInfoText(), UiConfig::get().renderInfoShadow()));
}

void IntroScene::render() {
    constexpr std::uint32_t BLACK_ARGB = 0xFF000000U;
    Screen::get().fillRect(0, 0, GameCanvas::WIDTH, GameCanvas::HEIGHT, BLACK_ARGB);

    if (font_) {
        const int SECS_LEFT = std::max(1, (timer_ms_ + 999) / 1000);
        font_->writeDX(Text::CENTER_FLAG | Text::COLOR_FLAG,
            GameCanvas::CENTER_X,
            GameCanvas::CENTER_Y + NAME_Y_OFFSET,
            SCENE_NAME,
            1,
            UiConfig::get().notificationText());
        font_->writeDX(Text::CENTER_FLAG | Text::COLOR_FLAG,
            GameCanvas::CENTER_X,
            GameCanvas::CENTER_Y + TIMER_Y_OFFSET,
            std::to_string(SECS_LEFT),
            1,
            UiConfig::get().notificationText());
    }

    Notifier::get().render();
    RenderInfo::get().render();
    Screen::get().present();
}