//3 buttons for Climate check, Find my Phone, confirm Schedule
#define BLYNK_TEMPLATE_ID "TMPL5zo0m681d"
#define BLYNK_TEMPLATE_NAME "ESP32 DHT22 blynk"
#define BLYNK_AUTH_TOKEN "4gPex1bMu-0xOKPR0PJIbxOQfYI50cwc"
#define sensor_pin 27
#include <LiquidCrystal_I2C.h>
#include <DHTesp.h> //DHT sensor header file
#include <DHT.h>
#include <PubSubClient.h>
#include <Arduino.h>
#include <WiFi.h> //Wifi header file
#include <WiFiClient.h> //Wifi header file 
#include <BlynkSimpleEsp32.h> //blynk header file
#include <NTPClient.h>
WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP);

char auth[] = BLYNK_AUTH_TOKEN; // blynk token define above
char ssid[] = "Wokwi-GUEST"; // Since it is a simulation a default Wokwi SSID wifi name is used 
char pass[] = ""; // no password
const int DHT_PIN = 15; // The sensor it connected to pin 21
DHTesp dhtSensor;
BlynkTimer timer;
int led_pin = 23;
const int buzzerPin = 23;
LiquidCrystal_I2C lcd(0x27, 16, 2);
#define PULSE_PIN 25 // pulse sensor pin connection

//int buttonpintemp = 4;
int buttonvoicerec = 13;
int findme = 34;
int ledpin = 18;
const int buzzrepin = 23;
bool tempbuttonstate = false;
int findmestate = HIGH;
int minHeartRate = 60;
int maxHeartRate = 100;
//bool findmestate =false;


void setup() {
  // all my setup codes are here
  // Wire.begin(23, 22);
  Serial.begin(115200);
  WiFi.begin(ssid, pass);
  timeClient.begin();
  Blynk.begin(auth,ssid,pass); // Setup the connection to blynk
dhtSensor.setup(DHT_PIN, DHTesp::DHT22); // Sensor setup
//timer.setInterval(2500L,sendSensor); // call the sendSensor function after 2500 millisecond interval
 lcd.init(); // initialize the lcd
 lcd.backlight(); // To turn on the backlight,
 lcd.clear();
 lcd.setCursor(0, 0);
 digitalWrite(ledpin, LOW);
 tempbuttonstate == LOW;
 
  pinMode(findme, INPUT);
  //pinMode(findme, INPUT);
pinMode(buttonvoicerec, INPUT);
  pinMode(ledpin, OUTPUT);
  pinMode(buzzerPin, OUTPUT);
  Serial.println("TESTING LIGHT BUTTON");
} 

 BLYNK_WRITE(V6) // Executes when the value of virtual pin 0 changes
{
  if(param.asInt() == 1)
  {
    // execute this code if the switch widget is now ON
     tone(buzzerPin, 1000); // You can adjust the frequency as needed
 delay(10); // Sound duration
  // Deactivate the buzzer (no sound)
  noTone(buzzerPin);
    Serial.println("1");  
  }
}

void loop() { 
  timeClient.update();
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print(timeClient.getFormattedTime());
  TempAndHumidity data = dhtSensor.getTempAndHumidity();
int t = data.temperature;
float h = data.humidity;
int alarmon = 1;
int alarmoff = 0;
  Blynk.run(); //call the run function in the loop
timer.run();
BLYNK_CONNECTED();
  Blynk.syncVirtual(V4);  // will cause BLYNK_WRITE(V4) to be executed
  Blynk.virtualWrite(V0,t); // temp will be pushed into V0 virtual pin
Blynk.virtualWrite(V1,h);// humidity will be pushed into V2 virtual pin
lcd.setCursor(0,1);
 lcd.print("Temp:" + String(t) + "C" + " Humd:" + String(h) + "%");



// Read pulseValue from PULSE_PIN 
  int16_t pulseValue = analogRead(PULSE_PIN);
  
  // Convert pulseValue to voltage
  float voltage = pulseValue * (5 / 4095.0);
  
  // calculate heartRate from voltage
  int heartRate = (voltage / 3.3) * 675;

  
  if (heartRate < minHeartRate){
    //lcd.clear();
    Serial.println("Heart rate below ");
    //lcd.setCursor(0, 1);
    Serial.println("minimum: ");
    Serial.println(heartRate);
    //lcd.setCursor(13,1);
    Serial.println("b/m");
    delay(20); // Wait for the other half of the blink interval

  }
  else if (heartRate > maxHeartRate){
    //lcd.clear();
    Serial.println("Heart rate above ");
    //lcd.setCursor(0, 1);
    Serial.println("maximum: ");
    lcd.println(heartRate);
    //lcd.setCursor(13,1);
    Serial.println("b/m");
    delay(20); // Wait for the other half of the blink interval

    
  }else{
    //lcd.clear();
    Serial.println("Heart Monitor");
    //lcd.setCursor(0, 1);
    Serial.println("Heart rate:");
    Serial.println(heartRate);
     //lcd.setCursor(13,1);
    Serial.println("b/m");
    delay(100); // Wait for the other half of the blink interval

  }




  // Read the state of the button

  int value = digitalRead((findme));
  if (findmestate != value) {
    findmestate = value;
    if (value == HIGH) {
      Blynk.virtualWrite(V5,alarmon);
    Serial.println("alarm on");
    digitalWrite(ledpin, HIGH);
      Serial.println(" released");
    }
    if (value == LOW) {
      Blynk.virtualWrite(V5,alarmoff);
      digitalWrite(ledpin, LOW);
      Serial.println(" pressed");
    }
  }
  

  delay(300);
}