#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <Keypad.h>
#include <stdio.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>

// LCD
#define SCREEN_WIDTH 128   // Change this to your display's width (usually 128 pixels)
#define SCREEN_HEIGHT 64   // Change this to your display's height (usually 64 pixels)

#define OLED_RESET -1      // Reset pin # (or -1 if not used)
#define SCREEN_ADDRESS 0x3C 

Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

// Bitmap icon
// main icon
const unsigned char icon [] PROGMEM = {
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3f, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7f, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x03, 0x00, 0x00, 0x00, 0x00, 0x01, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x07, 0x80, 0x00, 0x00, 0x00, 0x07, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x1f, 0xc0, 0x00, 0x00, 0x00, 0x0f, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x3f, 0xe0, 0x00, 0x00, 0x00, 0x1f, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x1f, 0xf0, 0x00, 0x00, 0x00, 0x3f, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x7f, 0xf8, 0x00, 0x00, 0x00, 0x3f, 0xff, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0xff, 0xfc, 0x00, 0x00, 0x00, 0x7f, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x3f, 0xfc, 0x00, 0x00, 0x00, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x7f, 0xfe, 0x00, 0x00, 0x00, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x7f, 0xff, 0x80, 0x00, 0x01, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x1f, 0xff, 0xe0, 0x00, 0x03, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x3f, 0xff, 0xff, 0x00, 0x07, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x3f, 0xff, 0xff, 0xf8, 0x0f, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x3f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x3f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x1f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x0f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x0f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x1f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x0f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x07, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x03, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x03, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x03, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x01, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x01, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x3f, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x3f, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x1f, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x0f, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x03, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x03, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x01, 0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x03, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x01, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x7f, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x7f, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x3f, 0xff, 0xff, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x1f, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x0f, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x03, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x1f, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x0f, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x07, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x07, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x03, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x03, 0xf8, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x03, 0xf8, 0x00, 0x08, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x02, 0x03, 0xfc, 0x08, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x8c, 0x0f, 0xff, 0xc2, 0x1a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x8e, 0x18, 0x7f, 0xff, 0x1e, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x0f, 0xc4, 0xc3, 0xee, 0x3e, 0xb8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0xf3, 0xfe, 0x08, 0x60, 0x1e, 0x78, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x73, 0x7f, 0x08, 0x00, 0x7f, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x06, 0x28, 0x0d, 0xfe, 0x98, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x00, 0x00, 0x1c, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
// 'humidity icon', 20x20px
const unsigned char humidity_icon [] PROGMEM = {
	0x00, 0x00, 0x00, 0x00, 0x60, 0x00, 0x00, 0x90, 0x00, 0x00, 0x90, 0x00, 0x01, 0x08, 0x00, 0x01, 
	0x08, 0x00, 0x02, 0x04, 0x00, 0x02, 0x04, 0x00, 0x04, 0x02, 0x00, 0x04, 0x82, 0x00, 0x09, 0x49, 
	0x00, 0x09, 0x51, 0x00, 0x10, 0x20, 0x80, 0x10, 0x40, 0x80, 0x10, 0x58, 0x80, 0x10, 0xa8, 0x80, 
	0x09, 0x29, 0x00, 0x04, 0x02, 0x00, 0x02, 0x04, 0x00, 0x01, 0xf8, 0x00
};
// 'temperature icon', 20x20px
const unsigned char temperature_icon [] PROGMEM = {
	0x01, 0xc0, 0x00, 0x02, 0x26, 0x00, 0x02, 0x10, 0x00, 0x02, 0x90, 0x00, 0x02, 0x9c, 0x00, 0x02, 
	0x90, 0x00, 0x02, 0x96, 0x00, 0x02, 0x90, 0x00, 0x02, 0x90, 0x00, 0x02, 0x90, 0x00, 0x02, 0x90, 
	0x00, 0x02, 0x96, 0x00, 0x02, 0x90, 0x00, 0x04, 0x80, 0x00, 0x05, 0xc8, 0x00, 0x01, 0xe8, 0x00, 
	0x05, 0xe8, 0x00, 0x04, 0xc8, 0x00, 0x02, 0x10, 0x00, 0x01, 0xe0, 0x00
};
// 'light_icon', 20x20px
const unsigned char light_icon [] PROGMEM = {
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x60, 0x00, 0x21, 
	0x08, 0x40, 0x00, 0x10, 0x00, 0x00, 0x02, 0x00, 0x04, 0x06, 0x00, 0x04, 0x02, 0x00, 0x04, 0x02, 
	0x00, 0x00, 0x00, 0x00, 0x02, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
	0x00, 0x00, 0x00, 0x01, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf0, 0x00
};
// 'waterlvl_icon', 20x20px
const unsigned char waterlvl_icon [] PROGMEM = {
	0xfc, 0x04, 0x00, 0x84, 0x0e, 0x00, 0x9c, 0x1f, 0x00, 0x9c, 0x64, 0xc0, 0x84, 0xf4, 0xe0, 0x8c, 
	0xc4, 0x40, 0x84, 0x44, 0x40, 0xbc, 0x44, 0x40, 0x84, 0x44, 0x40, 0x8c, 0x40, 0x40, 0x8c, 0x40, 
	0x40, 0x84, 0x40, 0x40, 0xbc, 0x00, 0x00, 0x84, 0x96, 0x90, 0x8f, 0xff, 0xf0, 0x85, 0x69, 0x60, 
	0x9c, 0x80, 0x10, 0x9e, 0x96, 0x90, 0x87, 0xff, 0xe0, 0xfc, 0x00, 0x00
};
// 'food_icon', 20x20px
const unsigned char food_icon [] PROGMEM = {
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x38, 0xf1, 0xc0, 0x3f, 0xff, 0xc0, 0x1f, 0xff, 0x80, 0x1f, 
	0xff, 0x80, 0x1f, 0x0f, 0x80, 0x1f, 0x07, 0x80, 0x1f, 0x8f, 0x80, 0x1f, 0x0f, 0x80, 0x1f, 0x07, 
	0x80, 0x1f, 0x07, 0x80, 0x1e, 0x87, 0x80, 0x1e, 0x87, 0x80, 0x1f, 0xff, 0x80, 0x1f, 0xff, 0x80, 
	0x3f, 0xff, 0xc0, 0x38, 0xf1, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};

// Define the keypad layout and pins
const byte ROWS = 4;
const byte COLS = 4;
char keys[ROWS][COLS] = {
  {'1', '2', '3', 'A'},
  {'4', '5', '6', 'B'},
  {'7', '8', '9', 'C'},
  {'*', '0', '#', 'D'}
};
byte rowPins[ROWS] = {13, 12, 14, 27};
byte colPins[COLS] = {26, 25, 33, 32};
Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, ROWS, COLS);

// flags
volatile unsigned int choice;
volatile unsigned short menu_page;
volatile unsigned short progress;

// variables
volatile unsigned int chicken;
volatile bool humidity_act;
volatile bool temp_act;
volatile bool light_act;
volatile bool water_act;
volatile bool food_act;

// display main menu
void display_menu (){
  display.setCursor(0, 0);
  display.print("Main Menu");
	display.setCursor(0, 30);
	display.println("1) Poultry Condition");
	display.println("2) Chicken Condition");
  display.display(); // Show the updated display
}

// display menu 1
void menu_1(){
  display.setCursor(0, 0);
  display.print("Menu 1");
  display.display(); // Show the updated display
}

// display menu 2
void menu_2(){
  display.setCursor(0, 0);
  display.print("Menu 2");
  display.display(); // Show the updated display
}

// display user choice at lower bottom
void show_choice (char user_choice) {
  display.setCursor(70, 52);
  display.print("Choice:");
  display.print(user_choice);
  display.display(); // Show the updated display
  // delay(100);
}

// sys initialisation
void setup() {
	Serial.begin(115200);
	
  if (!display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS)) {
    Serial.println(F("SSD1306 allocation failed"));
    for (;;);
  }

	// variable initialisation (may wrong)
	humidity_act = false;
	temp_act 		 = false;
	light_act		 = false;
	water_act		 = false;
	food_act		 = false;

	// Initialise adafruit oled library
  display.display();   // Clear the display buffer
  delay(100);         // Delay to let OLED hardware initialize
  display.clearDisplay(); // Clear the display
  display.display();   // Show the cleared display

  // Text settings
  display.setTextSize(0.5);      // Text size (adjust as needed)
  display.setTextColor(SSD1306_WHITE); // Text color (SSD1306_WHITE for white)
  display.setCursor(0, 0);     // Set the text cursor position

  // startup page
  display.drawBitmap(0, 0, icon, 128, 64, SSD1306_WHITE);
  display.setCursor(66, 0);
  display.print("Poultry");
  display.setCursor(66, 9);
  display.print("Farm");
  display.setCursor(66, 18);
  display.print("Monitoring");
  display.setCursor(66, 27);
  display.print("System");
  display.display();
  delay(4000);
}

void loop() {
  // check key
	char key = keypad.getKey();
  // const char* key1 = &key;

  // Progress = 0 because at main menu
  progress = 0;

  // display menu
  display.clearDisplay(); // Clear the display
  display_menu();

  if (key) {
    // Serial.println(key);
    display.clearDisplay(); // Clear the display
    display_menu();
    // delay(100);

    show_choice(key);
    choice = key - '0'; //convert from aschii to deci
    

    // 'A' to enter, 'D' to delete
    while (key != 'A'){
      char key = keypad.getKey();
      if (key =='D'){
        progress = 0;
        break;
      }

      else if (key =='A'){
        progress = 1;
        break;
      }
    }

    // if user confirm choice, proceed to progress 1
    while (progress == 1){
      char key = keypad.getKey();

      // if user select menu 1
      if (choice == 1){
        menu_page = 1;
        display.clearDisplay(); // Clear the display
        menu_1();
        progress = 2; //proceed to next progress
        // delay(2000);
      }
      
      // if user select menu 1
      else if (choice == 2){
        menu_page = 2;
        display.clearDisplay(); // Clear the display
        menu_2();
        progress = 2; //proceed to next progress
        // delay(2000);
      }

      else{
        char temp;
        display.clearDisplay(); // Clear the display
        display.setCursor(0, 20);
        display.print("Invalid choice: ");
        temp = choice + '0';
        display.print(temp);
        display.display(); // Show the updated display
        delay(2000);
        progress = 0; //return to progress 0
        break;
      }

    // //press "B" to go back
    //   if (key=='B'){
    //     progress = 0; //return to progress 0
    //     break;
    //   }
    }

		
		// proceed to progress 2, either menu1 or menu2
    while (progress==2){

			// if menu 1 is selected
			if (menu_page==1){

				display.clearDisplay(); // Clear the display

				// display Humidity
				display.setCursor(0, 0);
				display.print("1)Hum:");
				display.print("77");	 		// to be changed later
				display.print("%");

				// display Temperature 
				display.setCursor(64, 0);
				display.print("2)Tem:");
				display.print("36");			// to be changed later
				display.print("C");

				// display Light intensity
				display.setCursor(0, 20);
				display.print("3)Lig:");
				display.print("77");			// to be changed later
				display.print("%");

				// display Water Level
				display.setCursor(64, 20);
				display.print("4)H20:");
				display.print("77");			// to be changed later
				display.print("%");

				// display Food Level
				display.setCursor(0, 40);
				display.print("5)Fd :");
				display.print("77");			// to be changed later
				display.print("%");

				display.display(); // Show the updated display

				char key = keypad.getKey();

				// humidity menu
				if (key=='1'){
					progress = 3;
					menu_page = 11;
					break;
				}

				// temperature menu
				else if (key=='2'){
					progress = 3;
					menu_page = 12;
					break;
				}

				// light intensity menu
				else if (key=='3'){
					progress = 3;
					menu_page = 13;
					break;
				}

				// water level menu
				else if (key=='4'){
					progress = 3;
					menu_page = 14;
					break;
				}

				// food level menu
				else if (key=='5'){
					progress = 3;
					menu_page = 15;
					break;
				}
				
				// press 'B' to return
				else if (key == 'B'){
					show_choice(key);
					progress  = 0;
					menu_page = 0;					
					delay(1000);
					break;
				}
			}

			else if (menu_page == 2){
				// Promt user to select number of chicken
				display.clearDisplay(); // Clear the display

				display.clearDisplay(); // Clear the display
				display.setCursor(0, 0);
				display.print("Select Chicken:");	
				display.display(); // Show the updated display

				//necessary variable for menu 2
				char temp[1];
				unsigned short counter = 0;
				while (1){
					char key = keypad.getKey();

					// Serial.println(counter);
					// Serial.println(temp[0]);
					// Serial.println(temp[1]);
					// Serial.println(temp[2]);

					if ((key=='0'||key=='1'||key=='2'||key=='3'||key=='4'||key=='5'||key=='6'||key=='7'||key=='8'||key=='9')&&counter<1){
						temp[counter]=key;
						display.setCursor(32+counter*7, 30);
						display.print(key);
						display.display();
						delay(200);
						counter ++;
					}

					// press "A" to proceed to next
					else if (key == 'A'){
						//proceed to next progress
						chicken = atoi(temp);
						progress = 3;
						menu_page = 21;
						break;
					}

					// press "D" to delete
					else if (key == 'D'){
						if(counter > 0){
							char temp[1]; //clear temp char
							counter = 0 ; //reset counter
							display.clearDisplay(); // Clear the display
							display.setCursor(0, 0);
							display.print("Select Chicken:");	
							display.display(); // Show the updated display
						}
					}

					// press 'B' to return
					else if (key == 'B'){
						progress  = 0;
						menu_page = 0;
						delay(500);
						break;
					}
				}

			// press 'B' to return
			if (key == 'B'){
				progress  = 0;
				menu_page = 0;
				delay(500);
				break;
			}

			}
    
    }

		// proceed to progress next page of menu 1 or menu 2
		while (progress == 3){

			// humidity menu
			while(menu_page == 11){
				display.clearDisplay(); // Clear the display
				display.drawBitmap(0, 0, humidity_icon, 20, 20, SSD1306_WHITE);
				display.setCursor(25, 0);
				display.print("Humidity ");	
				display.print("77");			// to be changed later
				display.print("%");
				display.setCursor(25, 15);

				display.print("Actuator is ");
				if (humidity_act==true) display.print("on");// to be changed later
				else display.print("off");// to be changed later

				display.setCursor(0, 30);
				display.print("Press 'C' to toggle");
				display.display(); // Show the updated display
				
				char key = keypad.getKey();
				// press 'C' to toggle actuator
				if (key == 'C'){
					if(!humidity_act) humidity_act=true;
					else humidity_act=false;		
				}

				// press 'B' to return
				if (key == 'B'){
					progress  = 0;
					menu_page = 0;
					delay(500);
					break;
				}
			}

			// temperature menu
			while(menu_page == 12){
				display.clearDisplay(); // Clear the display
				display.drawBitmap(0, 0, temperature_icon, 20, 20, SSD1306_WHITE);
				display.setCursor(25, 0);
				display.print("Temperature ");	
				display.print("36");			// to be changed later
				display.print("C");
				display.setCursor(25, 15);

				display.print("Actuator is ");
				if (temp_act==true) display.print("on");// to be changed later
				else display.print("off");     // to be changed later

				display.setCursor(0, 30);
				display.print("Press 'C' to toggle");
				display.display(); // Show the updated display
				
				char key = keypad.getKey();
				// press 'C' to toggle actuator
				if (key == 'C'){
					if(!temp_act) temp_act=true;
					else temp_act=false;		
				}

				// press 'B' to return
				if (key == 'B'){
					progress  = 0;
					menu_page = 0;
					delay(500);
					break;
				}
			}

			// light menu
			while(menu_page == 13){
				display.clearDisplay(); // Clear the display
				display.drawBitmap(0, 0, light_icon, 20, 20, SSD1306_WHITE);
				display.setCursor(25, 0);
				display.print("Light Int ");	
				display.print("77");			// to be changed later
				display.print("%");
				display.setCursor(25, 15);

				display.print("Actuator is ");
				if (light_act==true) display.print("on");// to be changed later
				else display.print("off");     // to be changed later

				display.setCursor(0, 30);
				display.print("Press 'C' to toggle");
				display.display(); // Show the updated display
				
				char key = keypad.getKey();
				// press 'C' to toggle actuator
				if (key == 'C'){
					if(!light_act) light_act=true;
					else light_act=false;		
				}

				// press 'B' to return
				if (key == 'B'){
					progress  = 0;
					menu_page = 0;
					delay(500);
					break;
				}
			}

			// water menu
			while(menu_page == 14){
				display.clearDisplay(); // Clear the display
				display.drawBitmap(0, 0, waterlvl_icon, 20, 20, SSD1306_WHITE);
				display.setCursor(25, 0);
				display.print("H20 Lvl ");	
				display.print("77");			// to be changed later
				display.print("%");
				display.setCursor(25, 15);

				display.print("Actuator is ");
				if (water_act==true) display.print("on");// to be changed later
				else display.print("off");     // to be changed later

				display.setCursor(0, 30);
				display.print("Press 'C' to toggle");
				display.display(); // Show the updated display
				
				char key = keypad.getKey();
				// press 'C' to toggle actuator
				if (key == 'C'){
					if(!water_act) water_act=true;
					else water_act=false;		
				}

				// press 'B' to return
				if (key == 'B'){
					progress  = 0;
					menu_page = 0;
					delay(500);
					break;
				}
			}

			// food menu
			while(menu_page == 15){
				display.clearDisplay(); // Clear the display
				display.drawBitmap(0, 0, food_icon, 20, 20, SSD1306_WHITE);
				display.setCursor(25, 0);
				display.print("Food Lvl ");	
				display.print("77");			// to be changed later
				display.print("%");
				display.setCursor(25, 15);

				display.print("Actuator is ");
				if (food_act==true) display.print("on");// to be changed later
				else display.print("off");     // to be changed later

				display.setCursor(0, 30);
				display.print("Press 'C' to toggle");
				display.display(); // Show the updated display
				
				char key = keypad.getKey();
				// press 'C' to toggle actuator
				if (key == 'C'){
					if(!food_act) food_act=true;
					else food_act=false;		
				}

				// press 'B' to return
				if (key == 'B'){
					progress  = 0;
					menu_page = 0;
					delay(500);
					break;
				}
			}

			while(menu_page == 21){
				Serial.println(chicken);
				display.clearDisplay(); // Clear the display
				display.setCursor(30, 0);
				display.print("Chicken ");	
				display.print(chicken);
				display.display(); // Show the updated display

				// press 'B' to return
				char key = keypad.getKey();
				if (key == 'B'){
					progress  = 0;
					menu_page = 0;
					delay(500);
					break;
				}
			}

		}
	}
	
}