// UAS_SYAFA FELISA_2241170054

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

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

// Konfigurasi ThingSpeak
WiFiClient client;
unsigned long myChannelNumber = 2786072;
const char* myWriteAPIKey = "PU4CSU33C7698L8E";

// Konfigurasi DHT22
#define DHTPIN 4
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);

// Konfigurasi HC-SR04
#define TRIG_PIN_1 23
#define ECHO_PIN_1 22
#define TRIG_PIN_2 19
#define ECHO_PIN_2 18

// Fungsi untuk mengukur jarak menggunakan HC-SR04
float measureDistance(int trigPin, int echoPin) {
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);

  long duration = pulseIn(echoPin, HIGH);
  float distance = (duration * 0.0343) / 2; // Konversi ke cm
  return distance;
}

// Fungsi untuk menghubungkan ke WiFi
void connectToWiFi() {
  Serial.print("Menghubungkan ke WiFi");
  WiFi.begin(WIFI_NAME, WIFI_PASSWORD);
  
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.print(".");
  }
  Serial.println("\nWiFi Terhubung!");
}

void setup() {
  // Inisialisasi Serial Monitor
  Serial.begin(115200);

  // Inisialisasi sensor
  dht.begin();
  pinMode(TRIG_PIN_1, OUTPUT);
  pinMode(ECHO_PIN_1, INPUT);
  pinMode(TRIG_PIN_2, OUTPUT);
  pinMode(ECHO_PIN_2, INPUT);

  // Hubungkan ke WiFi
  connectToWiFi();

  // Inisialisasi ThingSpeak
  ThingSpeak.begin(client);
}

void loop() {
  // Baca data dari DHT22
  float temperature = dht.readTemperature();
  float humidity = dht.readHumidity();

  // Validasi data DHT22
  if (isnan(temperature) || isnan(humidity)) {
    Serial.println("Gagal membaca data dari sensor DHT22");
    return;
  }

  // Baca data dari HC-SR04
  float distance1 = measureDistance(TRIG_PIN_1, ECHO_PIN_1);
  float distance2 = measureDistance(TRIG_PIN_2, ECHO_PIN_2);

  // Simulasi perbedaan jarak (contoh: tambahkan offset pada Sensor 2)
  distance2 += 10.0; // Misalnya, jarak Sensor 2 lebih jauh 10 cm

  // Cetak data sensor ke Serial Monitor
  Serial.println("\nData Sensor:");
  Serial.printf("Suhu: %.2f°C\n", temperature);
  Serial.printf("Kelembaban: %.2f%%\n", humidity);
  Serial.printf("Ketinggian Air (Sensor 1): %.2f cm\n", distance1);
  Serial.printf("Ketinggian Air (Sensor 2): %.2f cm\n", distance2);

  // Kirim data ke ThingSpeak
  ThingSpeak.setField(1, temperature);
  ThingSpeak.setField(2, humidity);
  ThingSpeak.setField(3, distance1);
  ThingSpeak.setField(4, distance2);

  int httpResponseCode = ThingSpeak.writeFields(myChannelNumber, myWriteAPIKey);
  if (httpResponseCode == 200) {
    Serial.println("Data berhasil dikirim ke ThingSpeak!");
  } else {
    Serial.printf("Gagal mengirim data, kode error: %d\n", httpResponseCode);
  }

  // Tunggu 20 detik sebelum pengukuran berikutnya
  delay(20000);
}