#define BLYNK_PRINT Serial
#define BLYNK_TEMPLATE_ID "TMPL6qTxeIqjE"
#define BLYNK_TEMPLATE_NAME "AirQuality"
#define BLYNK_AUTH_TOKEN "htDMiBSgUNH4rLungnpj_B9Ub5ZaJ9u4"

#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <Adafruit_Sensor.h>
#include <DHT.h>

#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

#define DHTPIN 2     
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);

char auth[] = BLYNK_AUTH_TOKEN;
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

const int pmSensorPin = 34;

BlynkTimer timer;

void sendSensor()
{
 delay(1000);

  //read temperature and humidity
  float t = dht.readTemperature();
  float h = dht.readHumidity();
  if (isnan(h) || isnan(t)) {
    Serial.println("Failed to read from DHT sensor!");
  }

  Blynk.virtualWrite(V0, t);
  Blynk.virtualWrite(V1, h);

  // clear display
  display.clearDisplay();
  
  // display temperature
  display.setTextSize(1);
  display.setCursor(0,0);
  display.print("Suhu: ");
  display.setTextSize(2);
  display.setCursor(0,10);
  display.print(t);
  display.print(" ");
  display.setTextSize(1);
  display.cp437(true);
  display.write(167);
  display.setTextSize(2);
  display.print("C");
  
  // display humidity
  display.setTextSize(1);
  display.setCursor(0, 35);
  display.print("Kelembaban: ");
  display.setTextSize(2);
  display.setCursor(0, 45);
  display.print(h);
  display.print(" %"); 
  
  display.display();
}

void setup()
{
  Serial.begin(9600);
  Blynk.begin(auth, ssid, pass);
  dht.begin();
  timer.setInterval(1000, sendSensor);

  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println(F("SSD1306 allocation failed"));
    for(;;);
  }
  delay(500);
  display.clearDisplay();
  display.setTextColor(WHITE);
}

void loop()
{
  
  Blynk.run();
  timer.run();  
  int pmValue = analogRead(pmSensorPin);
  Serial.print("PM2.5 Level: ");
  Serial.println(map(pmValue, 0, 1023, 0, 100)); 
}