#include <stdio.h>
#include <stdlib.h>

#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <string>

#include "my_menu.h"
#include "class_event_manager.h"
#include "my_class_btn.h"

#ifndef events_list_h
#define events_list_h
#include "events_list.h"
#endif

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64

Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);
class_event_manager event_manager;

class_my_menu main_menu    ("MAIN MENU", SETTINGS_MENU_SHOW);
class_my_menu settings_menu("SETTINGS",  MAIN_MENU_SHOW);


// this function must be here... dont know how to make
// pointer to the class method. if known then 
void add_to_queue(int event_id){
  if (event_id != 0) event_manager.add_to_queue(event_id);
}


//class_my_button my_button_2(2, &add_to_queue, EV_RED_SHORT,  EV_RED_LONG);
class_my_button my_button_up   (18, BUTTON_UP_SHORT,   BUTTON_UP_LONG);
class_my_button my_button_down (5,  BUTTON_DOWN_SHORT, BUTTON_DOWN_LONG);
class_my_button my_button_left (23, BUTTON_LEFT_SHORT, BUTTON_LEFT_LONG);
class_my_button my_button_right(19, BUTTON_RIGHT_SHORT,BUTTON_RIGHT_LONG);

void setup() {
  Serial.begin(115200);

  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println(F("SSD1306 allocation failed"));
    for(;;);
  }


  // TBD
  main_menu.display     = &display;
  settings_menu.display = &display;

  // menu definition
  main_menu.add_item_struct({"Mode",      SEL_MODE});
  main_menu.add_item_struct({"Settings",  SETTINGS_MENU_SHOW});
  main_menu.add_item_struct({"GREEN On",  EV_GREEN_ON});
  main_menu.add_item_struct({"GREEN Off", EV_GREEN_OFF});

  //settings_menu.add_item_struct({"Increase Delay",  DUMMY_EVENT});
  //settings_menu.add_item_struct({"Decrease Delay",  DUMMY_EVENT});
  //settings_menu.add_item_struct({"Increase sth",    DUMMY_EVENT});
  //settings_menu.add_item_struct({"Decrease sth",    DUMMY_EVENT});


  // show menu
  

  pinMode(2,OUTPUT);
  //add_to_queue(MAIN_MENU_SHOW);
  main_menu.show();
  
}


int menu_return;
int current_event;
event_txx event_struct;

void loop() {

  // reading button states
  add_to_queue(my_button_up.f_check_my_button());
  add_to_queue(my_button_down.f_check_my_button());
  add_to_queue(my_button_left.f_check_my_button());
  add_to_queue(my_button_right.f_check_my_button());

  // main events loop
  //int current_event = event_manager.get_first_event();
  event_manager.get_first_event_tx(&event_struct);
  current_event = event_struct.event_id;
  //if (current_event != NULL) {
    if (event_struct.event_id != NULL) {

    Serial.print("Event : ");
    Serial.println(event_struct.event_id);

    switch (event_struct.event_id) {
      case BUTTON_UP_SHORT:
        digitalWrite(2, HIGH);
        break;
      case BUTTON_DOWN_SHORT:
        digitalWrite(2, LOW);
        break;
      case MAIN_MENU_SHOW:
        main_menu.show();
        break;
      //case SETTINGS_MENU_SHOW:
      //  settings_menu.show();
      //  break;

    }  
    
    // reading menu events  TBD
    menu_return = settings_menu.event_handler(current_event);  
    if (menu_return != NULL) add_to_queue(menu_return);  // not good, menu may return more events,
    //menu_return = settings_menu.event_handler(event_struct.event_id);    
    //if (menu_return != NULL) add_to_queue(menu_return);  // not good, menu may return more events,
                                                         // should be done directly in menu ?

  }


}