#include "core/input/global_inputs.hpp"

#include <string>

#include "core/input/input.h"
#include "core/locale/lang.h"
#include "core/rendering/screen.h"
#include "game/options.hpp"
#include "utils/utils.h"

namespace GlobalInputs {

    namespace {
        // Índexs de Lang per a les notificacions de hotkey
        constexpr int LANG_ZOOM = 96;
        constexpr int LANG_FULLSCREEN = 97;
        constexpr int LANG_WINDOW = 98;
        constexpr int LANG_SHADER = 99;
        constexpr int LANG_PRESET = 100;

        constexpr Uint32 NOTIFY_MS = 1500;
        const Color BLACK = {0x00, 0x00, 0x00};
        const Color CYAN = {0x00, 0xFF, 0xFF};
        const Color YELLOW = {0xFF, 0xE0, 0x40};
        const Color MAGENTA = {0xFF, 0x00, 0xFF};
        const Color GREEN = {0x00, 0xFF, 0x80};

        void notifyZoom() {
            const std::string MSG = Lang::get()->getText(LANG_ZOOM) + " " + std::to_string(Options::window.zoom) + "x";
            Screen::get()->notify(MSG, YELLOW, BLACK, NOTIFY_MS);
        }

        void notifyFullscreen() {
            const int IDX = Options::video.fullscreen ? LANG_FULLSCREEN : LANG_WINDOW;
            Screen::get()->notify(Lang::get()->getText(IDX), YELLOW, BLACK, NOTIFY_MS);
        }

        void notifyShaderEnabled() {
            const std::string STATE = Screen::isShaderEnabled() ? "ON" : "OFF";
            const std::string MSG = Lang::get()->getText(LANG_SHADER) + " " + STATE;
            Screen::get()->notify(MSG, CYAN, BLACK, NOTIFY_MS);
        }

        void notifyShaderType() {
            const bool IS_CRTPI = Options::video.shader.current_shader == Rendering::ShaderType::CRTPI;
            const std::string MSG = Lang::get()->getText(LANG_SHADER) + " " + (IS_CRTPI ? "CRTPI" : "POSTFX");
            Screen::get()->notify(MSG, MAGENTA, BLACK, NOTIFY_MS);
        }

        void notifyPreset() {
            const std::string MSG = Lang::get()->getText(LANG_PRESET) + " " + Screen::get()->getCurrentPresetName();
            Screen::get()->notify(MSG, GREEN, BLACK, NOTIFY_MS);
        }
    }  // namespace

    auto handle() -> bool {
        if (Screen::get() == nullptr || Input::get() == nullptr) { return false; }

        if (Input::get()->checkInput(Input::Action::WINDOW_FULLSCREEN, Input::Repeat::OFF)) {
            Screen::get()->toggleVideoMode();
            notifyFullscreen();
            return true;
        }
        if (Input::get()->checkInput(Input::Action::WINDOW_DEC_ZOOM, Input::Repeat::OFF)) {
            if (Screen::get()->decWindowZoom()) {
                notifyZoom();
            }
            return true;
        }
        if (Input::get()->checkInput(Input::Action::WINDOW_INC_ZOOM, Input::Repeat::OFF)) {
            if (Screen::get()->incWindowZoom()) {
                notifyZoom();
            }
            return true;
        }
        if (Input::get()->checkInput(Input::Action::TOGGLE_SHADER, Input::Repeat::OFF)) {
            Screen::get()->toggleShaderEnabled();
            notifyShaderEnabled();
            return true;
        }
        // F5/F6 només actuen quan el post-procesado està actiu.
        if (Screen::isShaderEnabled()) {
            if (Input::get()->checkInput(Input::Action::TOGGLE_SHADER_TYPE, Input::Repeat::OFF)) {
                Screen::get()->toggleActiveShader();
                notifyShaderType();
                return true;
            }
            if (Input::get()->checkInput(Input::Action::NEXT_SHADER_PRESET, Input::Repeat::OFF)) {
                if (Screen::get()->nextPreset()) {
                    notifyPreset();
                }
                return true;
            }
        }
        return false;
    }

}  // namespace GlobalInputs