#include "DHTesp.h"
#include <WiFi.h>
#include <HTTPClient.h>
#include "ThingSpeak.h"

const int DHT_PIN = 15;
const int LED_MERAH_PIN = 32;
const int LED_HIJAU_PIN = 27;
const int LDR_PIN = 34; // Pin analog untuk LDR
const int BATAS_CAHAYA = 500; // Batas untuk nilai cahaya, sesuaikan sesuai dengan kalibrasi Anda

// connection
const char *ssid = "Wokwi-GUEST";
const char *pwd = "";

WiFiClient client; 

unsigned long myChannelNumber = 2 ; 
const char* myWriteAPIKey = "THGX3BFIRLUZCA5Z";
const char* server = "api.thingspeak.com"; 

unsigned long lastTime = 0 ; 
unsigned long timeDelay = 30000 ;

int temperatureC; // Mendeklarasikan variabel suhu
int humidity;    // Mendeklarasikan variabel kelembaban

DHTesp dhtSensor;

void setup() {
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);

  pinMode(LED_MERAH_PIN, OUTPUT);
  pinMode(LED_HIJAU_PIN, OUTPUT);

  WiFi.begin(ssid, pwd);
  while (WiFi.status() != WL_CONNECTED) {
    Serial.print(".");
    delay(400);
  }
  Serial.println("wifi connected");
  Serial.println(WiFi.localIP()); // Mengganti Wifi menjadi WiFi

  WiFi.mode(WIFI_STA);

  ThingSpeak.begin(client);

}

void loop() {
  temperatureC = dhtSensor.getTemperature();
  Serial.print("Temperature (°C): ");
  Serial.println(temperatureC);
  
  humidity = dhtSensor.getHumidity();
  Serial.print("humidity (%): ");
  Serial.println(humidity);

  // Membaca nilai LDR
  int nilaiLDR = analogRead(LDR_PIN);

  // Konversi nilai LDR menjadi nilai cahaya
  int nilaiCahaya = map(nilaiLDR, 0, 1023, 0, 255); // Sesuaikan rentang sesuai dengan kalibrasi Anda

  Serial.println("Light Value: " + String(nilaiCahaya));
  Serial.println("---");

  if (temperatureC < 30.0) {
    analogWrite(LED_MERAH_PIN, 0); // Lampu merah - Mati
    analogWrite(LED_HIJAU_PIN, nilaiCahaya); // Lampu hijau - Sesuai dengan nilai cahaya
  } else {
    analogWrite(LED_MERAH_PIN, nilaiCahaya); // Lampu merah - Sesuai dengan nilai cahaya
    analogWrite(LED_HIJAU_PIN, 0); // Lampu hijau - Mati
  }

  ThingSpeak.setField(1, temperatureC);
  ThingSpeak.setField(2, humidity);
  

  int x = ThingSpeak.writeFields(myChannelNumber, myWriteAPIKey);
  if (x == 200) {
    Serial.println("Channel update succsess. ");
  }
  else {
    Serial.println("Problem updating channel. HTTP error code" + String(x));
  }

  delay(1500); // Tunggu untuk membaca sensor kembali
}