// Copyright (c) 2023 Dominic Masters
// 
// This software is released under the MIT License.
// https://opensource.org/licenses/MIT

#pragma once
#include "scene/SceneItem.hpp"

namespace Dawn {
  enum CameraType {
    PERSPECTIVE,
    ORTHOGONAL
  };

  class Camera : public SceneComponent {
    public:
      float_t clipNear = 0.01f;
      float_t clipFar = 1000.0f;
      enum CameraType type = CameraType::PERSPECTIVE;

      float_t fov = 0.785398f;

      float_t orthoLeft = -1.0f;
      float_t orthoRight = 1.0f;
      float_t orthoBottom = -1.0f;
      float_t orthoTop = 1.0f;

      // std::shared_ptr<RenderTarget> renderTarget;
      
      void onInit() override;

      /**
       * Returns the aspect ratio that the camera is using. In future I may 
       * allow you to specify a custom ratio for stylistic reasons but for now I
       * just take the ratio of the specific frame buffer.
       * 
       * @return The aspect ratio as a ratio of w/h.
       */
      float_t getAspect();

      /**
       * Returns the projection matrix for this camera.
       * 
       * @return Projection matrix.
       */
      glm::mat4 getProjection();
  };
}