#include "window.h"
#include "pushbutton.h"

Window::Window(const std::string& text, const std::shared_ptr<sf::Font>& font) :
    _font(font),
    _is_dragging(false)
{
    _bar_title.setFont(*font);
    _bar_title.setString(text);
    _bar_title.setCharacterSize(12);
    _bar_title.setFillColor(sf::Color(188, 157, 207));
    _bar.setFillColor(sf::Color(88, 57, 107));
    _window_content.setFillColor(sf::Color(188, 157, 207));
}

void Window::input(const sf::Event& event)
{
    Widget::input(event);

    switch (event.type)
    {
    default:
        break;

    case sf::Event::MouseButtonPressed:
        if (_bar.getGlobalBounds().contains(event.mouseButton.x, event.mouseButton.y))
        {
            _is_dragging = true;
            _previous_click_position = {static_cast<float>(event.mouseButton.x),
                                       static_cast<float>(event.mouseButton.y)};
        }
        break;

    case sf::Event::MouseButtonReleased:
        _is_dragging = false;
        break;

    case sf::Event::MouseMoved:
        if (_is_dragging)
        {
            float x_mouse_diff = event.mouseMove.x - _previous_click_position.x;
            float y_mouse_diff = event.mouseMove.y - _previous_click_position.y;

            _previous_click_position = {static_cast<float>(event.mouseMove.x),
                                        static_cast<float>(event.mouseMove.y)};

            move({x_mouse_diff, y_mouse_diff});
        }
        break;
    }
}

void Window::update(const sf::Time& dt)
{
    Widget::update(dt);
}

void Window::draw(sf::RenderTarget& target, sf::RenderStates states) const
{
    if (_is_visible)
    {
        target.draw(_window_content, states);
        target.draw(_bar, states);
        target.draw(_bar_title, states);
        Widget::draw(target, states);
    }
}

void Window::setRect(const sf::FloatRect& rect)
{
    _window_content.setPosition(rect.left, rect.top);
    _window_content.setSize({rect.width, rect.height});

    _bar.setPosition(rect.left, rect.top);
    _bar.setSize({rect.width, 30});
    _bar_title.setPosition(rect.left + 5, rect.top + 5);
}

void Window::setPosition(const sf::Vector2f& position)
{
    _window_content.setPosition(position);
    _bar.setPosition(position);
    _bar_title.setPosition(position.x + 5, position.y + 5);
}

void Window::move(const sf::Vector2f &delta)
{
    _window_content.move(delta);
    _bar.move(delta);
    _bar_title.move(delta);

    Widget::move(delta);
}

bool Window::isUnderMouse(int mouse_x, int mouse_y) const
{
    return _is_visible && _window_content.getGlobalBounds().contains(mouse_x, mouse_y);
}

void Window::addBarButton(const std::string &text, std::function<void(void)> callback)
{
    auto b = std::make_shared<PushButton>(text, _font, 20);
    b->setCallback(callback);
    b->setRect({_window_content.getGlobalBounds().left + _window_content.getSize().x - 35,
                _window_content.getGlobalBounds().top,
                30,
                30});
    addChild(b);
}