#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include "DHTesp.h"
#include <WiFi.h>
#include <HTTPClient.h>
#include <PubSubClient.h>
#include <DHT.h>

#define Wifi_ssid "Wokwi-GUEST"
#define Wifipass ""
#define THINGSBOARD_SERVER "thingsboard.cloud"
#define THINGSBOARD_TOKEN "hy4fD4nZXNRWkyFSL9xK"
#define DHT22PIN 13
#define PULSE_PIN 35

DHT dht(DHT22PIN, DHT22);
const int LM35_pin = 34;
const int numReadings = 10;
const int pir_pin =32; 
int readings[numReadings];
int readingIndex = 0;
int total = 0;


LiquidCrystal_I2C oled(0x27,16,2);

void setup() {
  Serial.begin(115200);
  pinMode(LM35_pin, INPUT);
  analogReadResolution(12);
  dht.begin();
  pinMode(pir_pin, INPUT);
  oled.init();
  oled.backlight();

  for (int i = 0; i < numReadings; i++) {
    readings[i] = 0;
  }

  Serial.print("Connecting to WiFi");
  WiFi.begin(Wifi_ssid, Wifipass);
  while (WiFi.status() != WL_CONNECTED) {
    delay(100);
    Serial.print(".");
  }
  Serial.println(" Connected!");
  Serial.println(" Starting!");
  delay(2000);
}

void loop() {
  int sensorValue = analogRead(LM35_pin);
  float temperature = (sensorValue / 4095.0) * 330.0;
  float humidity = dht.readHumidity();
  float temp = dht.readTemperature(); 
  int16_t pulse = analogRead(PULSE_PIN);
 // Convert pulseValue to voltage
  float voltage = pulse * (5 / 4095.0); 
  // calculate heartRate from volatge
  int heart_rate = (voltage / 3.3) * 675;

  Serial.print("Body Temperature: ");
  Serial.print(temperature);
  Serial.print(" °C");
  Serial.println();
  Serial.print("Temperature: ");
  Serial.print(temp);
  Serial.print("°C");
  Serial.println();
  Serial.print("Humidity: ");
  Serial.print(humidity);
  Serial.print(" %");
  Serial.println("");
  Serial.print("Heartbeat Pulse: ");
  Serial.print(heart_rate);
  Serial.println("");
  
  const int IP = digitalRead(pir_pin);
  if(IP==1){
  Serial.print("Status Gerakan: ");
  Serial.print(IP);
  Serial.println(" Ada Gerakan");
  Serial.println("");
  }
  else{
  Serial.print("Status Gerakan: ");
  Serial.print(IP);
  Serial.println(" Tidak ada Gerakan");
  Serial.println("");  
  }

  // Kirim data ke ThingsBoard
  sendDataToThingsBoard(temperature, temp, humidity, heart_rate, IP);
  oled.setCursor(0,0);  
  oled.println ("BTemp: " + String(temperature) + " C ");
  oled.setCursor(0,2); 
  oled.println ("Temperature: " + String(temp) + " C ");
  oled.setCursor(0,3);   
  oled.println ("Humidity: " + String(humidity) + " % ");
  delay(1000);
  oled.setCursor(0,0); 
  oled.println ("Heart Rate: " + String(heart_rate));  

  if(IP==1){
  oled.setCursor(0,2); 
  oled.println ("Status Gerakan: " + String(IP) + "      ");
  oled.setCursor(0,3); 
  oled.println ("Sapi Bergerak  ");
  }
  else{
  oled.setCursor(0,2); 
  oled.println ("Status Gerakan: " + String(IP) + "      ");
  oled.setCursor(0,3); 
  oled.println ("Sapi Diam       ");
  }

}

void sendDataToThingsBoard(float temperature, float temp, float humidity, float heart_rate, float IP) {
  WiFiClient client;
  HTTPClient http;

  // URL untuk mengirim data ke ThingsBoard
  String url = "http://" + String(THINGSBOARD_SERVER) + "/api/v1/" + String(THINGSBOARD_TOKEN) + "/telemetry";
 
  String payload = "{";
  payload += "\"BodyTemperature\":";
  payload += String(temperature);
  payload += ",\"TemperatureUdara \":";
  payload += String(temp);
  payload += ",\"Humidity\":";
  payload += String(humidity);
  payload += ",\"HeartRate\":";
  payload += String(heart_rate);
  payload += ",\"Motion\":";
  payload += String(IP);
  payload += "}";

  // Kirim data ke ThingsBoard
  http.begin(client, url);
  http.addHeader("Content-Type", "application/json");
  int httpResponseCode = http.POST(payload);

  if (httpResponseCode > 0) {
    Serial.print("HTTP Response code: ");
    Serial.println(httpResponseCode);
  } else {
    Serial.print("Error sending data to ThingsBoard. HTTP Response code: ");
    Serial.println(httpResponseCode);
  }
  http.end();
}