#ifndef COMPONENTS_H
#define COMPONENTS_H

#include "entity.h"
#include <utility>
#include <list>
#include "map.h"
#include <memory>

class UserMovementComponent : public Component {
  public:
    void input(Game& game, Entity& entity, int key, int action);
      
  private:
    bool holdingLeft = false;
    bool holdingRight = false;
};

class PhysicsBodyComponent : public Component {
  public:
    void receive(Game& game, Entity& entity, Message& msg);
    void tick(Game& game, Entity& entity);
    void detectCollision(Game& game, Entity& entity, Entity& collider, std::pair<double, double> old_position);
    
  private:
    std::pair<double, double> velocity;
    std::pair<double, double> accel;
};

class PlayerSpriteComponent : public Component {
  public:
    void render(Game& game, Entity& entity, Texture& buffer);
    void receive(Game& game, Entity& entity, Message& msg);
    void tick(Game& game, Entity& entity);
    
  private:
    Texture sprite{"../res/Starla.png"};
    int animFrame = 0;
    bool facingLeft = false;
    bool isMoving = false;
};

class PlayerPhysicsComponent : public Component {
  public:
    PlayerPhysicsComponent();
    void tick(Game& game, Entity& entity);
    void receive(Game& game, Entity& entity, Message& msg);
    
  private:
    std::pair<double, double> velocity;
    std::pair<double, double> accel;
    double jump_velocity;
    double jump_gravity;
    double jump_gravity_short;
    int direction = 0;
    bool canDrop = false;
};

class MapRenderComponent : public Component {
  public:
    MapRenderComponent(Map& map);
    void render(Game& game, Entity& entity, Texture& buffer);
    
  private:
    Texture screen{GAME_WIDTH, GAME_HEIGHT};
};

class MapCollisionComponent : public Component {
  public:
    MapCollisionComponent(Map& map);
    void detectCollision(Game& game, Entity& entity, Entity& collider, std::pair<double, double> old_position);
    
  private:
    enum direction_t {
      up, left, down, right
    };

    typedef struct {
      int axis;
      int lower;
      int upper;
      int type;
    } collision_t;
    
    void add_collision(int axis, int lower, int upper, direction_t dir, int type);
    
    std::list<collision_t> left_collisions;
    std::list<collision_t> right_collisions;
    std::list<collision_t> up_collisions;
    std::list<collision_t> down_collisions;
    Map* leftMap;
    Map* rightMap;
};

#endif