#include "application/application.h"
#include "application/log.h"
#include "core/editor.h"
#include "core/gameevent.h"

#include "application/about.h"
#include "application/editorstate.h"
#include "application/gamestate.h"
#include "application/mainmenu.h"

#include "classicmode/classicfactory.h"

Log LOG;

bool Application::init()
{
    LOG.level = Log::DEBUG;
    DEBUG("Initializing Application");

    if (!_core_factory)
        return false;

    MainMenu::Callbacks callbacks = {
        [&]() { pushState(GUIState::Tag::GAME); },
        [&]() { pushState(GUIState::Tag::EDITOR); },
        [&]() { pushState(GUIState::Tag::ABOUT); },
    };

    const auto main_menu =
        std::make_shared<MainMenu>(_core_factory, std::move(callbacks));
    const auto game_state = std::make_shared<GameState>(
        _core_factory, classic::getGame(_core_factory),
        GameState::Callbacks{[&]() { popState(); }});
    const auto editor = std::make_shared<EditorState>(
        _core_factory, classic::getEditor(_core_factory),
        EditorState::Callbacks{[&]() { popState(); }});
    const auto about = std::make_shared<About>(
        _core_factory, About::Callbacks{[&]() { popState(); }});

    _states[GUIState::Tag::MAIN_MENU] = main_menu;
    _states[GUIState::Tag::GAME] = game_state;
    _states[GUIState::Tag::EDITOR] = editor;
    _states[GUIState::Tag::ABOUT] = about;

    pushState(GUIState::Tag::MAIN_MENU);

    return true;
}

void Application::input(const kku::SystemEvent &event)
{
    _state_stack.back()->input(event);
}

void Application::update(const kku::microsec &dt)
{
    _state_stack.back()->update(dt);
}

void Application::pushState(GUIState::Tag new_state)
{
    DEBUG("Pushing state %d", new_state);

    if (!_state_stack.empty())
        _state_stack.back()->leave();

    _state_stack.emplace_back(_states.at(new_state));
    _state_stack.back()->enter();
}

void Application::popState()
{
    DEBUG("Popping state");
    _state_stack.back()->leave();
    _state_stack.pop_back();
    _state_stack.back()->enter();
}