/*
  Sketch generated by the Arduino IoT Cloud Thing "Untitled"
  https://create.arduino.cc/cloud/things/7946428b-c804-4d4e-8c9b-c1d9f2e73f64

  Arduino IoT Cloud Variables description

  The following variables are automatically generated and updated when changes are made to the Thing


  Variables which are marked as READ/WRITE in the Cloud Thing will also have functions
  which are called when their values are changed from the Dashboard.
  These functions are generated with the Thing and added at the end of this sketch.
*/

#include "thingProperties.h"
#include "DHT.h"
#include <LiquidCrystal_I2C.h> 


#define DHTPIN 15 // GPIO that is connected to the sensor
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);

#define TEMP_THRESHOLD 25.0  
#define lED 5   

// Initialize LCD screen with I2C address 0x27
LiquidCrystal_I2C lcd(0x27, 16, 2);


void setup() {
  // Initialize serial and wait for port to open:
  Serial.begin(9600);
  // This delay gives the chance to wait for a Serial Monitor without blocking if none is found
  delay(1500);

  dht.begin();

  // Initialize LCD screen
  lcd.init();
  lcd.backlight();

  lcd.setCursor(1,0);
  lcd.print("Temperature ");

  lcd.setCursor(0, 1);
  lcd.print("Monitoring System");

  // Initialize LED pin as an output
  pinMode(lED, OUTPUT);

  // Defined in thingProperties.h
  initProperties();

  // Connect to Arduino IoT Cloud
  ArduinoCloud.begin(ArduinoIoTPreferredConnection);

  /*
     The following function allows you to obtain more information
     related to the state of network and IoT Cloud connection and errors
     the higher number the more granular information you’ll get.
     The default is 0 (only errors).
     Maximum is 4
  */
  setDebugMessageLevel(2);
  ArduinoCloud.printDebugInfo();
}

void loop() {
  ArduinoCloud.update();
  // Your code here

  readSensor();

  Serial.println();
  Serial.print("Humidity: ");
  Serial.print(hUMIDITY);
  Serial.print("%");
  Serial.print(" | ");
  Serial.print("Temperature: ");
  Serial.print(tEMPERATURE);
  Serial.print("°C");

  // Display temperature and humidity on LCD screen
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Temp: ");
  lcd.print(tEMPERATURE);
  lcd.print(" C");

  lcd.setCursor(0, 1);
  lcd.print("Humidity: ");
  lcd.print(hUMIDITY);
  lcd.print("%");

// Check if temperature exceeds threshold
  if (tEMPERATURE > TEMP_THRESHOLD) {
    // Display danger message on LCD
    lcd.setCursor(0, 1);
    lcd.print("Danger!Temp>");
    lcd.print(TEMP_THRESHOLD);
    lcd.print("C");
    
    // Blink LED for emergency indication
    // blinkLED();
    digitalWrite(lED, HIGH);
  }
  
  
  // Delay between readings
  delay(5000);
}

void readSensor(){
  float t = dht.readTemperature();
  float u = dht.readHumidity();
   if (isnan(u) || isnan(t)) {
    Serial.println(F("Failed to read sensor!"));
    return;
   }
  tEMPERATURE = t;
  hUMIDITY = u;
  delay(5000);
}

void blinkLED() {
  // Blink LED for emergency indication
  for (int i = 0; i < 3; i++) {
    digitalWrite(lED, HIGH);  // Turn LED on
    delay(500);                    // Wait for 500 milliseconds
    digitalWrite(lED, LOW);   // Turn LED off
    delay(500);                    // Wait for 500 milliseconds
  }
}

void onLEDChange() {
  // Get the new LED state from Arduino Cloud
  bool newLEDState;
  
}