#define BLYNK_TEMPLATE_ID "TMPL6IidZBw6q"
#define BLYNK_TEMPLATE_NAME "DHT22 DS18B20"
#define BLYNK_AUTH_TOKEN "e9q7mhBZxwjFNeYFwEkSie1zwJZl7sHO"

// Konfigurasi ThingSpeak
#include "ThingSpeak.h"
#define THINGSPEAK_CHANNEL_ID 2810691    // Ganti dengan Channel ID Anda
#define THINGSPEAK_API_KEY "SFCD16AXBPHB3YJB"  // Ganti dengan Write API Key Anda

#include <WiFi.h>
#include <BlynkSimpleEsp32.h>
#include <Wire.h>
#include <Adafruit_SSD1306.h>
#include <DHT.h>
#include <OneWire.h>
#include <DallasTemperature.h>

// Konfigurasi WiFi
const char* ssid = "Wokwi-GUEST";
const char* pass = "";

// Pin Konfigurasi
#define DHTPIN 23          
#define DHTTYPE DHT22      
#define ONE_WIRE_BUS 4     
#define RELAY_PIN 19       
#define BUZZER_PIN 18      
#define LED_PIN 17         
#define SCREEN_WIDTH 128   
#define SCREEN_HEIGHT 64   

// Virtual Pin Blynk
#define VPIN_DHT_TEMP V0     
#define VPIN_DHT_HUM V1      
#define VPIN_DS_TEMP V2      

// Inisialisasi objek
DHT dht(DHTPIN, DHTTYPE);
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);
WiFiClient client;

BlynkTimer timer;
unsigned long lastThingSpeakUpdate = 0;
const unsigned long thingSpeakDelay = 15000; // Delay 15 detik untuk ThingSpeak

// Fungsi untuk mengirim data ke ThingSpeak
void sendToThingSpeak(float dhtTemp, float dhtHum, float dsTemp) {
  if (millis() - lastThingSpeakUpdate > thingSpeakDelay) {
    Serial.println("\nMengirim data ke ThingSpeak...");
    
    ThingSpeak.setField(1, dhtTemp);
    ThingSpeak.setField(2, dhtHum);
    ThingSpeak.setField(3, dsTemp);
    
    int httpCode = ThingSpeak.writeFields(THINGSPEAK_CHANNEL_ID, THINGSPEAK_API_KEY);
    
    if (httpCode == 200) {
      Serial.println("✓ Data berhasil dikirim ke ThingSpeak");
    } else {
      Serial.println("❌ Gagal mengirim data ke ThingSpeak. Error: " + String(httpCode));
    }
    
    lastThingSpeakUpdate = millis();
  }
}

// Fungsi untuk mengirim data ke Blynk dan ThingSpeak
void sendSensorData() {
  Serial.println("\n-------- Membaca Sensor --------");
  
  float h = dht.readHumidity();
  float t = dht.readTemperature();
  
  Serial.println("Membaca DHT22...");
  if (isnan(h) || isnan(t)) {
    Serial.println("❌ Gagal membaca DHT sensor!");
    return;
  } else {
    Serial.print("✓ Suhu DHT22: ");
    Serial.print(t);
    Serial.print("°C, Kelembaban: ");
    Serial.print(h);
    Serial.println("%");
  }

  Serial.println("Membaca DS18B20...");
  sensors.requestTemperatures();
  float dsTemp = sensors.getTempCByIndex(0);
  Serial.print("✓ Suhu DS18B20: ");
  Serial.print(dsTemp);
  Serial.println("°C");

  // Kirim data ke Blynk
  Serial.println("Mengirim data ke Blynk...");
  Blynk.virtualWrite(VPIN_DHT_TEMP, t);
  Blynk.virtualWrite(VPIN_DHT_HUM, h);
  Blynk.virtualWrite(VPIN_DS_TEMP, dsTemp);
  Serial.println("✓ Data terkirim ke Blynk");

  // Kirim data ke ThingSpeak
  sendToThingSpeak(t, h, dsTemp);

  // Update OLED Display
  Serial.println("Memperbarui OLED Display...");
  display.clearDisplay();
  display.setCursor(0,0);
  display.setTextSize(1);
  display.println("Monitoring System");
  display.println("----------------");
  display.print("DHT22: ");
  display.print(t, 1);
  display.println(" C");
  display.print("Hum: ");
  display.print(h, 1);
  display.println(" %");
  display.print("DS18B20: ");
  display.print(dsTemp, 1);
  display.println(" C");
  display.display();
  Serial.println("✓ OLED Display diperbarui");

  // Kontrol otomatis berdasarkan suhu
  Serial.print("Kontrol perangkat berdasarkan suhu: ");
  Serial.println(t > 30 ? "AKTIF" : "NONAKTIF");
  
  if (t > 30) {
    digitalWrite(RELAY_PIN, HIGH);
    digitalWrite(BUZZER_PIN, HIGH);
    digitalWrite(LED_PIN, HIGH);
    Serial.println("⚠️ Suhu tinggi! Relay, Buzzer, dan LED AKTIF");
  } else {
    digitalWrite(RELAY_PIN, LOW);
    digitalWrite(BUZZER_PIN, LOW);
    digitalWrite(LED_PIN, LOW);
    Serial.println("✓ Suhu normal. Relay, Buzzer, dan LED NONAKTIF");
  }
  
  Serial.println("--------------------------------");
}

void setup() {
  Serial.begin(115200);
  Serial.println("\nMemulai sistem...");
  
  // Inisialisasi pin
  Serial.println("Inisialisasi PIN...");
  pinMode(RELAY_PIN, OUTPUT);
  pinMode(BUZZER_PIN, OUTPUT);
  pinMode(LED_PIN, OUTPUT);
  Serial.println("✓ PIN diinisialisasi");
  
  // Inisialisasi I2C
  Serial.println("Inisialisasi I2C...");
  Wire.begin(21, 22);
  Serial.println("✓ I2C diinisialisasi");
  
  // Inisialisasi sensor
  Serial.println("Inisialisasi sensor...");
  dht.begin();
  sensors.begin();
  Serial.println("✓ Sensor diinisialisasi");
  
  // Inisialisasi OLED
  Serial.println("Inisialisasi OLED...");
  if (!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println("❌ Gagal inisialisasi SSD1306");
    for(;;);
  }
  display.clearDisplay();
  display.setTextColor(SSD1306_WHITE);
  display.display();
  Serial.println("✓ OLED diinisialisasi");
  
  // Koneksi ke WiFi
  Serial.println("Menghubungkan ke WiFi...");
  WiFi.begin(ssid, pass);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("\n✓ Terhubung ke WiFi");
  
  // Inisialisasi ThingSpeak
  Serial.println("Inisialisasi ThingSpeak...");
  ThingSpeak.begin(client);
  Serial.println("✓ ThingSpeak diinisialisasi");
  
  // Koneksi ke Blynk
  Serial.println("Menghubungkan ke Blynk...");
  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);
  Serial.println("✓ Terhubung ke Blynk");
  
  // Setup timer
  timer.setInterval(2000L, sendSensorData);
  Serial.println("✓ Timer diatur untuk 2 detik");
  
  Serial.println("Setup selesai!");
}

void loop() {
  Blynk.run();
  timer.run();
}