#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include "DHT.h"
#include "RTClib.h"
//file system
#include "FS.h"
#include "SD.h"
#include "SPI.h"



#define Version "menu : 0.2"
#define WIRE Wire
#define DHTTYPE DHT22
#define DHTPIN 4 
#define SD_CS 5


#define BTN_UP 33
#define BTN_ENTER 34
#define BTN_DOWN 35

Adafruit_SSD1306 display = Adafruit_SSD1306(128, 32, &WIRE);
DHT dht(DHTPIN, DHTTYPE);
RTC_DS3231 rtc;  // Obiekt dla DS3231
int menu =10;

float hum;
float temp;
float heat_idx;


int mins;
int secs;
int hourss;
int dayss;
int months;
int years;
char dateString[21];

void setup() {

  Serial.begin(115200);

  
    Wire.begin(21, 22);
  if (!rtc.begin()) {
    Serial.println("Nie znaleziono DS3231 RTC!");
    while (1);  // Zatrzymaj program, jeśli RTC nie jest dostępny
  }

//Ustawianie daty i godziny:
//  rtc.adjust(DateTime(2025, 2, 10, 20, 35, 30));


  
  display.begin(SSD1306_SWITCHCAPVCC, 0x3C); // Address 0x3C for 128x32
  display.setTextSize(1);
  display.setTextColor(SSD1306_WHITE);
  display.clearDisplay();
  display.println("Version:");
  display.setCursor(0, 8);
  display.println(Version);
  display.setCursor(0, 16);
  display.println("DHT22");
  display.setCursor(0, 24);
  display.println("RTC: DS3231");

  display.display();
  delay(500);
  dht.begin();
  pinMode(BTN_UP, INPUT_PULLDOWN );
  pinMode(BTN_ENTER, INPUT_PULLDOWN );
  pinMode(BTN_DOWN, INPUT_PULLDOWN );

  display.clearDisplay();
    display.setCursor(0,8);

  if (!SD.begin(SD_CS)) {
        display.println("Błąd inicjalizacji karty SD!");
        return;
    }
    Serial.println("Karta SD wykryta!");

    // Tworzenie pliku
    File file = SD.open("/dane.txt", FILE_WRITE);
    if (file) {
        file.println("Dane zapisane z ESP32!");
        file.close();
         display.println("Plik utworzony!");

    } else {
        display.println("Błąd zapisu pliku!");

    }
    display.display();
    delay(1500);

//setup END
}

void loop() {
  display.clearDisplay();


  hum = dht.readHumidity();
  temp = dht.readTemperature();
  // Compute heat index in Celsius (isFahreheit = false)
  heat_idx = dht.computeHeatIndex(temp, hum, false);



//DATE
 DateTime now = rtc.now();

  years = now.year();
  months = now.month();
  dayss = now.day();
  hourss = now.hour();
  mins = now.minute();
  secs = now.second();


if (menu == 10 ){
//  ############# MENU TEMP 
    sprintf(dateString, "%02d/%02d/%4d   %02d:%02d:%02d", now.day(), now.month(), now.year(), now.hour(), now.minute(), now.second());
      display.setCursor(0,0);
      display.println(dateString);
  //HUM&TEMP
  //#########################################
    display.setCursor(0,8);
    display.println("Wilgotnosc:");
    display.setCursor(85,8);
    display.println(hum);
    display.setCursor(120,8);
    display.println("%");
  
    display.setCursor(0,16);
    display.println("Temperatura:");
    display.setCursor(85,16);
    display.println(temp);
    display.setCursor(120,16);
    display.println("C");
    
    display.setCursor(0,24);
    display.println("Odczuwalna:");
    display.setCursor(85,24);
    display.println(heat_idx);
    display.setCursor(120,24);
    display.println("C");  
}

  
  
//dla indexu: Caution:  > 27*C
//     Extreme Caution: > 32 *C
//              Danger: > 40 *C
//      Extreme Danger: > 52 *C 
//#########################################

if (menu == 9 ){
    display.setCursor(0,0);
    display.print("MENU2"); 

    
  if (digitalRead(BTN_UP) == HIGH) {
    display.setCursor(0,8);
    display.print("UP");
  }
  if (digitalRead(BTN_ENTER) == HIGH) {
    display.setCursor(30,8);
    display.print("ENTER");
  }
  if (digitalRead(BTN_DOWN) == HIGH) {
    display.setCursor(60,8);
    display.print("DOWN");
  }
}

if (menu == 8 ){
    display.setCursor(0,0);
    display.print("MENU testowe"); 
}


display.display();
delay(500);

  if (digitalRead(BTN_UP) == HIGH and menu <10 ) {
    menu = menu +1;
  }
 
  if (digitalRead(BTN_DOWN) == HIGH and menu > 8) {
    menu = menu  -1;
  }   
    

  yield();
}