#ifndef MENUS_H
#define MENUS_H

typedef enum button_action {NONE, WARP, SET_VAR, EXIT} button_action;
typedef enum void_type {INT, FLOAT, DOUBLE} void_type;

typedef struct onoff_button {
    int id;

    char* text;
    float x; float y; float w; float h;
    int red; int green; int blue;

    // {WARP, SET_VAR, EXIT}
    button_action type;
    
    // the value to change (if SET_VAR) or the destination interface (if WARP)
    void* metadata;
    void_type cast;

    // limits
    double inf; double sup;

    // is called upon clicking button
    // this function is executed before metadata is used
    void (*onClick)(void* args);
    void* arg;
} onoff_button;

typedef struct interface {
    int intfid;

    char* title;
    float x; float y; float w; float h;
    int red; int green; int blue;

    int* buttons;
    int nButtons;
    int nMemButtons;
} interface;

void initMenus();

void gl_drawRect(unsigned int fragShader, float x, float y, float w, float h, int r, int g, int b);
void gl_drawRectAlpha(unsigned int fragShader, float x, float y, float w, float h, int r, int g, int b, int a);
void gl_initDrawRect(unsigned int shaderProgram);

void gl_drawInteger(unsigned int fragShader, int n, float x, float y, float size, int r, int g, int b, float width, int side);
void gl_drawFloat(unsigned int fragShader, float n, float x, float y, float size, int r, int g, int b, float width, int side);
void gl_drawChar(unsigned int fragShader, char ch, float x, float y, float size, int r, int g, int b, float width);
void gl_drawSymbol(unsigned int fragShader, char ch, float x, float y, float size, int r, int g, int b, float width, float* retval);
void gl_drawString(unsigned int fragShader, char* str, float x, float y, float size, int r, int g, int b, float width, int side);
void gl_printf(unsigned int fragShader, float x, float y, float size, float width, int r, int g, int b, const char* str, ...);

void init_interf(GLFWwindow *window);
void reset_interf();
void free_interf();

bool isInMenu(GLFWwindow *win, unsigned int fragShader);
bool isMenuOpen();

int button_create_onoff(char* text, int red, int green, int blue, float x, float y, float w, float h, button_action actn, void* val, double min, double max, void_type cast, void (*onClick)(void*), void* arg);
int interface_create(char* title, int red, int green, int blue, float x, float y, float w, float h);
void interface_link_button(int interface_id, int button_id);
void interface_unlink_button(int interface_id, int button_id);
void interface_set(int interface_id);

void build_all_menus();
int build_text_box(char* msg, int red, int green, int blue);
int build_lock_box(char* msg, int red, int green, int blue);

#endif