#include "DHT.h"
#include <WiFi.h>

#define DHTPIN 4        // GPIO4
#define DHTTYPE DHT22
#define BUZZER 5        // GPIO5
#define LED 18          // GPIO18

DHT dht(DHTPIN, DHTTYPE);

int heartRate;
int spo2;

void setup() {
  Serial.begin(115200);
  pinMode(BUZZER, OUTPUT);
  pinMode(LED, OUTPUT);
  dht.begin();

  Serial.println("Smart ICU Monitoring System Started");
}

void loop() {

  float temperature = dht.readTemperature();

  // Simulated Heart Rate & SpO2
  heartRate = random(70, 110);
  spo2 = random(93, 100);

  Serial.println("----- Patient Data -----");
  Serial.print("Temperature: ");
  Serial.println(temperature);

  Serial.print("Heart Rate: ");
  Serial.println(heartRate);

  Serial.print("SpO2: ");
  Serial.println(spo2);

  // Emergency Conditions
  if (heartRate < 60 || heartRate > 100 || spo2 < 94 || temperature > 38) {
    digitalWrite(BUZZER, HIGH);
    digitalWrite(LED, HIGH);
    Serial.println("!!! EMERGENCY ALERT !!!");
  } else {
    digitalWrite(BUZZER, LOW);
    digitalWrite(LED, LOW);
  }

  Serial.println("--------------------------");
  delay(2000);
}