#include <Adafruit_GFX.h>
#include <Adafruit_ST7735.h>
#include <SPI.h>

// TFT pinlari (siz Wokwi diagrammada shular bilan ulandingiz)
#define TFT_CS    10
#define TFT_DC     9
#define TFT_RST    8   // agar yo'q bo'lsa -1 ishlatish mumkin

Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_RST);

#define BUZZER 2
#define BTN_GREEN 3    // yashil tugma (tugma boshqa tomondan GND ga ulangan)
#define BTN_YELLOW 4   // sariq tugma

unsigned long counter = 0;
bool lastGreenState = HIGH;

void setup() {
  Serial.begin(9600);
  Serial.println("Start setup...");

  pinMode(BUZZER, OUTPUT);
  pinMode(BTN_GREEN, INPUT);   // pullup bilan ishlatish tavsiya etiladi
  pinMode(BTN_YELLOW, INPUT_PULLUP);

  // SPI boshlash (ba'zi holatlarda kerak)
  SPI.begin();

  // ST7735 ekranini ishga tushirish
  Serial.println("Init TFT...");
  tft.initR(INITR_BLACKTAB);  // INITR_BLACKTAB yoki INITR_GREENTAB loyihangizga qarab
  tft.setRotation(1);         // 0..3
  tft.fillScreen(ST77XX_BLACK);

  // matn va rangi
  tft.setTextWrap(false);
  tft.setTextSize(2);
  tft.setTextColor(ST77XX_GREEN, ST77XX_BLACK);

  displayCounter();

  Serial.println("Setup done.");
}

void loop() {
  bool greenState = digitalRead(BTN_GREEN);

  // tugma bosilishi aniqlash (pullup dan LOW bo'lganda bosilgan)
  if (lastGreenState == HIGH && greenState == LOW) {
    counter++;

    if (counter >= 25001) {
      tone(BUZZER, 1000, 400);
      delay(400);
      counter = 0;
    }

    displayCounter();
    delay(150); // debounce
  }
  lastGreenState = greenState;

  if (digitalRead(BTN_YELLOW) == LOW) { // reset tugma (pullup bilan LOW bo'ladi)
    counter = 0;
    displayCounter();
    delay(150);
  }
}

void displayCounter() {
  // Ekrandan oldingi qiymatni tozalash: to'liq soha
  tft.fillRect(0, 40, 128, 80, ST77XX_BLACK);

  tft.setCursor(6, 50);
  tft.setTextSize(2);
  tft.print("Cnt:");
  tft.setCursor(6, 75);
  tft.setTextSize(2);
  tft.println(counter);

  // Serial orqali ham chiqaramiz — Wokwi diagnostika uchun
  Serial.print("Counter = ");
  Serial.println(counter);
}