#include <WiFi.h>
#include <HTTPClient.h>
#include <Arduino_JSON.h>
#include <ESP32Servo.h>
#include <DHT.h>

#define DHTPIN 27       // Pin DHT22
#define DHTTYPE DHT22  // Tipe DHT22

const char* ssid = "Wokwi-GUEST";
const char* password = "";

String serverName = "https://api.thingspeak.com/update?api_key=CJXXTL28KC4N0GZG&field1=";
String serverName2 = "https://api.thingspeak.com/channels/2759394/status.json?api_key=JRM9UMD690GPQT70";

Servo servoku;
DHT dht(DHTPIN, DHTTYPE);

void setup() {
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  
  servoku.attach(19); // Pin untuk Servo
  dht.begin();

  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    Serial.print(".");
    delay(500);
  }
  Serial.println("\nWiFi Connected. IP: ");
  Serial.println(WiFi.localIP());
}

void loop() {
  float suhu = dht.readTemperature();
  float kelembapan = dht.readHumidity();

  if (isnan(suhu) || isnan(kelembapan)) {
    Serial.println("Gagal membaca data dari sensor DHT!");
    return;
  }

  Serial.print("Suhu: ");
  Serial.print(suhu);
  Serial.print(" °C, Kelembapan: ");
  Serial.println(kelembapan);

  // Kirim data ke ThingSpeak (WRITE)
  if (WiFi.status() == WL_CONNECTED) {
    HTTPClient http;
    String serverPath = serverName + String(suhu) + "&field2=" + String(kelembapan);
    http.begin(serverPath);
    int httpResponseCode = http.GET();
    if (httpResponseCode > 0) {
      Serial.print("HTTP Response code (WRITE): ");
      Serial.println(httpResponseCode);
    } else {
      Serial.print("Error sending data: ");
      Serial.println(httpResponseCode);
    }
    http.end();
  } else {
    Serial.println("WiFi Disconnected");
  }

  // Baca data dari ThingSpeak (READ)
  if (WiFi.status() == WL_CONNECTED) {
    HTTPClient http;
    http.begin(serverName2); // URL untuk membaca data
    int httpResponseCode = http.GET();
    if (httpResponseCode > 0) {
      String payload = http.getString();
      Serial.println("Payload: " + payload);

      // Parse JSON untuk mendapatkan field3
      JSONVar jsonData = JSON.parse(payload);
      if (JSON.typeof(jsonData) == "undefined") {
        Serial.println("Parsing JSON gagal!");
        return;
      }
      int servoAngle = atoi((const char*)jsonData["field3"]); // Ambil nilai field3
      Serial.print("Angle Servo (field3): ");
      Serial.println(servoAngle);

      // Kontrol servo berdasarkan nilai field3
      servoku.write(servoAngle);
      Serial.println("Servo bergerak ke " + String(servoAngle) + " derajat.");
    } else {
      Serial.print("Error reading data: ");
      Serial.println(httpResponseCode);
    }
    http.end();
  }

  delay(10000); // Tunggu 5 detik sebelum iterasi berikutnya
}