#include "combat_ui.hpp"
#include "constants.hpp"
#include "color.hpp"

namespace gui {
  CombatUI::CombatUI(GameLevel level) :
      $layout(RAY_VIEW_X, RAY_VIEW_HEIGHT,
          RAY_VIEW_WIDTH, SCREEN_HEIGHT - RAY_VIEW_HEIGHT),
      $level(level),
      $font{FONT_FILE_NAME}
  {
    bool good = $layout.parse($grid);
    dbc::check(good, "failed to parse combat layout");
    render();
  }

  void CombatUI::render() {
    $background.setPosition({float($layout.grid_x), float($layout.grid_y)});
    $background.setSize({float($layout.grid_w), float($layout.grid_h)});
    $background.setFillColor({0, 0, 0});

    for(auto& [name, cell] : $layout.cells) {
      sf::RectangleShape shape;
      shape.setPosition({float(cell.x + 3), float(cell.y + 3)});
      shape.setSize({float(cell.w - 6), float(cell.h - 6)});
      shape.setFillColor({100, 100, 100});
      shape.setOutlineColor({200, 200, 200});
      shape.setOutlineThickness(1);

      if(name.starts_with("button_")) {
        sf::Text label($font, name);
        auto bounds = label.getLocalBounds();
        auto label_cell = lel::center(bounds.size.x, bounds.size.y, cell);
        // this stupid / 2 is because SFML renders from baseline rather than from the claimed bounding box
        label.setPosition({float(label_cell.x), float(label_cell.y) - label_cell.h / 2});
        $labels.push_back(label);
      } else if(name == "bar_hp") {
        shape.setFillColor({50, 200, 50});
      }

      $shapes.insert_or_assign(name, shape);
    }
  }

  void CombatUI::draw(sf::RenderWindow& window) {
    auto &player = $level.world->get_the<components::Player>();
    auto &combat = $level.world->get<components::Combat>(player.entity);

    auto &hp_shape = $shapes.at("bar_hp");
    auto &hp_cell = $layout.cells.at("bar_hp");
    float hp_now = float(combat.hp) / float(combat.max_hp) * float(hp_cell.w);
    hp_shape.setSize({std::max(hp_now, 0.0f), float(hp_cell.h - 6)});

    window.draw($background);

    for(auto& [name, shape] : $shapes) {
      window.draw(shape);
    }

    for(auto& [name, shape] : $label_boxes) {
      window.draw(shape);
    }

    for(auto& label : $labels) {
      window.draw(label);
    }
  }

  void CombatUI::click(int x, int y) {
    if(auto name = $layout.hit(x, y)) {
      if((*name).starts_with("button_")) {
        auto& shape = $shapes.at(*name);
        shape.setFillColor({100, 0, 0});
      }
    }
  }
}