#include <Adafruit_GFX.h>
#include <Adafruit_ILI9341.h>

// ----- TFT Pins (ESP32 compatible) -----
#define TFT_CS 15
#define TFT_DC 2
#define TFT_RST 4

Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC, TFT_RST);

// ----- Emergency Button Pin -----
const int emergencyButton = 12;
int lastButtonState = HIGH;

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

  // Button setup
  pinMode(emergencyButton, INPUT_PULLUP);

  // TFT setup
  tft.begin();
  tft.setRotation(1);
  tft.fillScreen(ILI9341_BLACK);
  tft.setTextSize(2);
  tft.setTextColor(ILI9341_WHITE);
  tft.setCursor(10, 10);
  tft.println("System Active 🔵");

  Serial.println("System Active - Waiting for Emergency Button");
}

void loop() {
  int buttonState = digitalRead(emergencyButton);

  // Detect falling edge (button pressed)
  if(buttonState == LOW && lastButtonState == HIGH) {
    Serial.println("ALERT: Emergency Button Pressed!");
    
    // Display on TFT
    tft.fillRect(0, 40, 320, 40, ILI9341_BLACK);
    tft.setCursor(10, 40);
    tft.setTextColor(ILI9341_RED);
    tft.println("EMERGENCY ALERT! 🔴");
  }

  lastButtonState = buttonState;
}