#include "storyboard/ui.hpp"
#include "components.hpp"
#include "animation.hpp"

namespace storyboard {
  UI::UI() :
    $view_texture({SCREEN_WIDTH, SCREEN_HEIGHT}),
    $view_sprite($view_texture.getTexture())
  {
    $view_sprite.setPosition({0, 0});
    $camera.style("pan");
  }

  void UI::init() {
    $ui.position(0,0, SCREEN_WIDTH, SCREEN_HEIGHT);

    $ui.set<guecs::Background>($ui.MAIN, {$ui.$parser, guecs::THEME.TRANSPARENT});

    auto& background = $ui.get<guecs::Background>($ui.MAIN);
    background.set_sprite("test_story", true);

    $ui.layout(
        "[a|b|c]"
        "[*%(200,100)d|_|f]"
        "[g|h|i]");
  }

  void UI::render(sf::RenderWindow &window) {
    if($camera.playing()) {
      zoom($zoom_target);
    }

    $view_texture.clear();
    $ui.render($view_texture);
    $ui.debug_layout($view_texture);
    $view_texture.display();
    window.draw($view_sprite);
  }

  bool UI::mouse(float x, float y, guecs::Modifiers mods) {
    auto& cell = $ui.cell_for($zoom_target);
    $camera.focus(cell.mid_x, cell.mid_y);

    $zoom_target = *$ui.$parser.hit(x, y);

    zoom($zoom_target);
    $camera.play();

    return $ui.mouse(x, y, mods);
  }

  void UI::zoom(const std::string &cell_name) {
    auto& cell = $ui.cell_for(cell_name);

    $camera.resize({float(cell.w), float(cell.h)});
    $camera.move($view_texture,
        {float(cell.mid_x), float(cell.mid_y)});
  }

  void UI::reset() {
    sf::FloatRect where{{0,0},{SCREEN_WIDTH, SCREEN_HEIGHT}};
    sf::View view{where};
    $view_texture.setView(view);
  }
}