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

const int DHT_PIN = 4;        // Pin yang terhubung dengan output sensor DHT22
const int TRIG_PIN = 12;      // Pin trigger sensor ultrasonik HC-SR04
const int ECHO_PIN = 13;      // Pin echo sensor ultrasonik HC-SR04
const int LED_PIN = 2;        // Pin LED
const int BUZZER_PIN = 14;    // Pin buzzer
const int RESISTOR_PIN = 2;   // Pin resistor

// WiFi credentials
const char* WIFI_NAME = "Wokwi-GUEST";
const char* WIFI_PASSWORD = "";

// ThingSpeak credentials
const int myChannelNumber = 2366878;
const char* myApiKey = "2840ABTRUG73X45P";
const char* server = "api.thingspeak.com";

DHTesp dhtSensor;
NewPing sonar(TRIG_PIN, ECHO_PIN, 200);
WiFiClient client;

void setup() {
  Serial.begin(115200);
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
  pinMode(LED_PIN, OUTPUT);
  WiFi.begin( WIFI_NAME , WIFI_PASSWORD);
  while (WiFi.status() != WL_CONNECTED){
    delay(1000);
    Serial.println("Wifi not connected");
  }
  Serial.println("Wifi connected !");
  Serial.println("Local IP: " + String(WiFi.localIP()));
  WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client);

  pinMode (LED_PIN, OUTPUT);
  pinMode (BUZZER_PIN, OUTPUT);
  pinMode (RESISTOR_PIN, OUTPUT);
  pinMode (TRIG_PIN, OUTPUT);
  pinMode (ECHO_PIN, INPUT);
  pinMode (DHT_PIN, INPUT);
}

void loop() {
  // Baca suhu dan kelembaban dari sensor DHT22
  TempAndHumidity Data = dhtSensor.getTempAndHumidity();

  // Baca jarak dari sensor ultrasonik HC-SR04
  float Distance = sonar.ping_cm();

  // Kirim data ke ThingSpeak
  ThingSpeak.setField(1, Data.temperature);
  ThingSpeak.setField(2, Data.humidity);
  ThingSpeak.setField(3, Distance);
   if (Data.temperature < 30 || Data.humidity < 50) {
    digitalWrite(LED_PIN, HIGH);
  }else{
    digitalWrite(LED_PIN, LOW);
  }

  int status = ThingSpeak.writeFields(myChannelNumber, myApiKey);

  Serial.println("Temp: " + String(Data.temperature, 2) + "°C");
  Serial.println("Humidity: " + String(Data.humidity, 1) + "%");

  // Sensor ultrasonik
  delay(50);
  Serial.print("Distance: ");
  Serial.print(Distance);
  Serial.println(" cm");

  if (status == 200) {
    Serial.println("Data sent to ThingSpeak successfully!");
  } else {
    Serial.println("Error sending data to ThingSpeak. Status code: " + String(status));
  }

  // Output LED dan Buzzer
  if (Distance < 20.0) {
    digitalWrite(LED_PIN, HIGH);    // Aktifkan LED
    tone(BUZZER_PIN, 1000);          // Nyalakan buzzer
  } else {
    digitalWrite(LED_PIN, LOW);     // Matikan LED
    noTone(BUZZER_PIN);              // Matikan buzzer
  }

  delay(15000); // Kirim data setiap 15 detik
}