#include <LiquidCrystal_I2C.h>
#include <Wire.h>

#define I2C_SDA 22
#define I2C_SCL 21
#define VERT_PIN 34
#define HORZ_PIN 36
#define SEL_PIN 32

int currentSelection = 0; // 0 = Settings, 1 = Timer
unsigned long lastBlinkTime = 0;
bool cursorVisible = true;

// Screen
LiquidCrystal_I2C lcd(0x27, 20, 4);


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

  Wire.begin(I2C_SDA, I2C_SCL);

  lcd.init();
  lcd.backlight();

  pinMode(VERT_PIN, INPUT);
  pinMode(HORZ_PIN, INPUT);
  pinMode(SEL_PIN, INPUT_PULLUP);  
  
  Serial.println("System initialized!");
}

void loop() {
  int vert = analogRead(VERT_PIN);
  int horz = analogRead(HORZ_PIN);
  bool selPressed = digitalRead(SEL_PIN) == LOW;

  //xyz
  bool top = 0;
  bool bottom = 0;

 if (millis() - lastBlinkTime > 500) {
    cursorVisible = !cursorVisible;
    if (cursorVisible) {
      lcd.cursor();
    } else {
      lcd.noCursor();
    }
    lastBlinkTime = millis();
  }
  
  lcd.clear();

  if (vert == 1023 && horz == 512) {
    top = 1;
  }
  else if (vert == 0 && horz == 512) {
    bottom = 1;
  }

  if (top && currentSelection - 1 >= 0) {
    currentSelection -= 1;
  }
  else if (bottom && currentSelection + 1 <= 4) {
    currentSelection += 1;
  }

  
  
  // // Пункт 1: Settings
  // lcd.setCursor(0, 0);
  // if (currentSelection == 0) {
  //   lcd.print(">1. Settings");
  // } else {
  //   lcd.print(" 1. Settings");
  // }
  
  // // Пункт 2: Timer
  // lcd.setCursor(0, 1);
  // if (currentSelection == 1) {
  //   lcd.print(">2. Timer");
  // } else {
  //   lcd.print(" 2. Timer");
  // }
  
  // // Устанавливаем курсор на выбранную строку
  // lcd.setCursor(0, currentSelection);

  delay(5000);
}