#include <LiquidCrystal_I2C.h>

#define I2C_ADDR    0x27  // I2C address for the LCD
#define LCD_COLUMNS 16    // Number of columns on the LCD
#define LCD_LINES   2     // Number of lines on the LCD
#define btnPin 2         // Button pin (changed to pin 2)

LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

void setup() {
  // Initialize the LCD
  lcd.init();
  lcd.backlight();      // Turn on the backlight
  
  // Set the button pin as input with internal pull-up
  pinMode(btnPin, INPUT_PULLUP);
}

void loop() {
  bool btn = digitalRead(btnPin);  // Read the button state

  if (btn == LOW) {  // If the button is pressed (LOW because it's configured as INPUT_PULLUP)
    lcd.setCursor(0, 0);   // Set cursor to the first line, first column
    lcd.print("Calling");   // Print "Calling" on the first line
    lcd.setCursor(0, 1);   // Set cursor to the second line, first column
    lcd.print("911");       // Print "911" on the second line
    delay(500);             // Wait for 500 ms
    lcd.clear();            // Clear the screen
    lcd.setCursor(0, 0);   // Set cursor to the first line, first column
    lcd.print("Calling");   // Print "Calling" on the first line
    lcd.setCursor(0, 1);   // Set cursor to the second line, first column
    lcd.print("911");
    delay(500);  
    lcd.clear();
    delay(15);
    lcd.setCursor(0, 0);   // Set cursor back to the first line
    for (int i = 0; i < 10; i++) {  // Loop to print 10 dots
      lcd.print(".");       // Print one dot
      delay(100);           // Delay of 100 ms between dots
    }
    
    lcd.clear();            // Clear the screen again
    lcd.setCursor(0, 0);   // Set cursor to the first line
    lcd.print("Help is on"); // Display the next step message
    lcd.setCursor(0, 1);   // Move to the second line
    lcd.print("the way!");  // Display additional message
    delay(2000);            // Wait for 2 seconds

    lcd.clear();            // Optionally, clear the screen after the message is shown
  } else {
    // Optional: You can leave this part empty, or display a message when not pressed
    lcd.clear();  // Clear screen if button is not pressed
  }

  delay(100);  // Small delay to debounce the button press
}