#include "DHT.h"
#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define RelayPin 33 
#define DHTPIN 32     // Digital pin connected to the DHT sensor
#define DHTTYPE DHT22   // DHT 11
// #define potPin 35 // Pin yang terhubung ke potensiometer
#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels
#define OLED_RESET     -1 // Reset pin # (or -1 if sharing Arduino reset pin)
#define SCREEN_ADDRESS 0x3c ///< See datasheet for Address; 0x3D for 128x64, 0x3C for 128x32
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

DHT dht(DHTPIN, DHTTYPE);
int ldrPin = 14;
int buzzerPin = 18;

const int currentSensorPin = 34; // Change to your selected GPIO pin
float voltage, current;


void setup() {
  // put your setup code here, to run once:
  pinMode(buzzerPin, OUTPUT);
  pinMode(ldrPin, INPUT);
  Serial.begin(9600);
  pinMode(RelayPin, OUTPUT);
  // pinMode(potPin, INPUT);

  // SSD1306_SWITCHCAPVCC = generate display voltage from 3.3V internally
  if (!display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS)) {
    Serial.println(F("SSD1306 allocation failed"));
    for (;;); // Don't proceed, loop forever
  }
  display.clearDisplay();
  display.setTextSize(2);
  display.setTextColor(SSD1306_WHITE);
  display.setCursor(2,25);
  display.println(F("MUTIA DAN KHENSA"));
  display.display();
  Serial.begin(115200);

  dht.begin();
}

void DisplayData()  {
  float h = dht.readHumidity();
  float tm = dht.readTemperature();
  delay(2000);
  display.clearDisplay();
  display.setTextSize(2);
  display.setCursor(0, 7);
  display.println("----------");
  display.setCursor(2, 20);
  display.print(int(tm));
  display.print((char)247);
  display.println("C");
  display.setCursor(60, 20);
  display.print(": ");
  display.print(int(h));
  display.println("%");
  display.setCursor(0, 34);
  display.println("----------");

  display.setTextSize(1);
  display.setCursor(20, 45);
  display.print("Automatic Mode");
  if (tm >= 32) {
    digitalWrite(RelayPin, HIGH);
    Serial.println("FAN ON");
    // Blynk.virtualWrite(VPIN_Heater, heaterState);
  } 
  else if(h >= 50){
    digitalWrite(RelayPin, HIGH);
    Serial.println("FAN ON");
  } 
  else {
    digitalWrite(RelayPin, LOW);
    Serial.println("FAN OFF");
    // Blynk.virtualWrite(VPIN_Heater, heaterState);
  }
  display.display();
}


void loop() {
  // int nilaiPotensiometer = analogRead(potPin); // Baca nilai potensiometer (0 - 1023)
  // int kecepatanKipas = map(nilaiPotensiometer, 0, 1023, 0, 100); // Pemetaan nilai potensiometer ke rentang kecepatan kipas (0 - 255)
  // analogWrite(RelayPin, kecepatanKipas); // Atur kecepatan kipas menggunakan PWM
  // Serial.println(kecepatanKipas)
  // delay(100); // Beri sedikit keterlambatan untuk menghindari pembacaan yang terlalu cepat

 int sensorValue = analogRead(currentSensorPin);

  // Convert the analog value to voltage
  voltage = sensorValue * (3.3 / 4095.0); // ESP32 ADC resolution is 12 bits

  // Calculate current (based on the sensor's characteristics)
  // ACS712 provides 0.5V at 0A and 100mV/A sensitivity
  current = (voltage - 0.5) / 0.1; // Adjust this calculation based on your sensor

  // Print out the results
  Serial.print("Voltage: ");
  Serial.print(voltage);
  Serial.print(" V, Current: ");
  Serial.print(current);
  Serial.println(" A");

  delay(1000); // Wait for a second be



 int sensorValues = analogRead(ldrPin);


  if (sensorValues < 500) {
    tone(buzzerPin, 1000);
    Serial.println(" ad asp ");

  } else {
    noTone(buzzerPin);
    Serial.println(" No asp.");
  }

  delay(1000); 



  DisplayData();
  float h = dht.readHumidity();
  float t = dht.readTemperature();

  if (isnan(h) || isnan(t)){
    Serial.println(F("Failed to read from DHT sensor!"));
    return;
  }
  Serial.print(F("Humidity: "));
  Serial.print(h);
  Serial.print(F("%  Temperature: "));
  Serial.print(t);
  Serial.print(F("°C "));
  Serial.println();

  delay(2000); // Wait for a new reading from the sensor (DHT11 has ~0.5Hz sample rate)  
  if(t >= 32){
  digitalWrite(RelayPin, HIGH); // To send high voltage signal 3.3/5V as ON
  delay(1000); // this speeds up the simulation
  }
  else if(h >= 50){
  digitalWrite(RelayPin, HIGH); // To send high voltage signal 3.3/5V as ON
  delay(1000); // this speeds up the simulation
  }
  else{
  digitalWrite(RelayPin, LOW);
  delay(1000); // this speeds up the simulation
  }
}