#ifndef ENGINE_H
#define ENGINE_H

#include "GLFW/glfw3.h"
#include "gpu.h"
#include "ui.h"
#include "hex.h"

typedef struct ClientContextStruct ClientContext;

typedef bool (*app_text_callback)(
    ClientContext* context,
    unsigned int codepoint);

typedef bool (*app_key_callback)(
    ClientContext* context,
    int key,
    int action,
    int mods);

typedef bool (*app_button_callback)(
    ClientContext* context,
    float x,
    float y,
    int button,
    int action,
    int mods);

typedef bool (*app_scroll_callback)(
    ClientContext* context,
    double x,
    double y);

typedef bool (*app_cursor_callback)(
    ClientContext* context,
    float x,
    float y);

typedef void (*app_frame_function)(
    ClientContext* context);

typedef void (*app_startup_function)(
    ClientContext* context);

struct ClientContextStruct {
  GLFWwindow* window;

  RenderContext render;
  UIContext ui;
  HexContext hex;

  vec3    position;
  vec3    velocity;

  vec2    rotation;
  int32_t key_spin[2];
  vec2    cur_spin;

  double  distance;
  int32_t zoom;

  bool    camera_mode;
  float   key_spin_speed;
  float   cur_spin_speed;
  float   zoom_speed;
  float   move_speed;

  void*                app_data;
  app_frame_function   app_frame;
  app_text_callback    app_text;
  app_key_callback     app_key;
  app_button_callback  app_button;
  app_scroll_callback  app_scroll;
  app_cursor_callback  app_cursor;
};

int run_app(
    void* app_data,
    app_startup_function app_startup,
    app_frame_function app_frame,
    app_text_callback app_text,
    app_key_callback app_key,
    app_button_callback app_button,
    app_scroll_callback app_scroll,
    app_cursor_callback app_cursor);

#endif