#pragma once

#include <glm/glm.hpp>
#include <glm/gtx/transform.hpp>
#include <SDL2/SDL.h>
#include <map>

class Camera {
public:
    Camera() {};
    Camera(const glm::vec3& position, float fov, float aspect, float near, float far);

    inline glm::mat4 getViewProjection() const {
        return m_projMatrix * glm::lookAt(m_position, m_position + m_direction, m_up);
    }

    void onMouseMove(const glm::vec2& mouse);
    void onKeyboard(const SDL_KeyboardEvent& event);
    void update(float delta);

    virtual ~Camera();

private:
    glm::vec3 m_up;
    glm::vec3 m_position;
    glm::vec3 m_direction;
    glm::vec3 m_rotation;

    glm::vec3 m_velocity;
    glm::vec3 m_friction;

    glm::mat4 m_projMatrix;
    glm::mat4 m_viewMatrix;

    glm::vec2 m_mouse;
    glm::vec2 m_oldMouse;

    float m_sensitivity;
    float m_moveSpeed;
    float m_delta;

    std::map<std::string, int> m_keys;
    std::map<std::string, bool> m_keys_states;
};