#define BLYNK_TEMPLATE_ID "TMPL64ZffXxdf"
#define BLYNK_TEMPLATE_NAME "Wokwi"

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

char auth[] = "3WfHOBhLmfucCULspYiUbpy98CY57g5i";
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

#define OLED_RESET -1
Adafruit_SSD1306 display(OLED_RESET);

#define POTENTIOMETER_PIN 34
const int updateInterval = 500;
#define FLOW_FACTOR 1 

unsigned long previousMillis = 0;
float totalVolume = 0.0;
int flowRate = 0.0;
const float maxTotalVolume = 10000.0;

float potMinValue = 0.0;   // Nilai minimal potensiometer
float potMaxValue = 4095.0; // Nilai maksimal potensiometer
float flowRateMin = 0.0;   // Nilai minimal laju aliran
float flowRateMax = 30.0;  // Nilai maksimal laju aliran

BlynkTimer timer;

void readPotentiometer()
{
  int potValue = analogRead(POTENTIOMETER_PIN);

  float flowRate = map(potValue, potMinValue, potMaxValue, flowRateMin, flowRateMax); 
  // Mengonversi nilai potensiometer ke rentang yang ditentukan
  flowRate = potValue ;
  totalVolume += flowRate * (updateInterval / 1000.0);
}

void sendSensorData()
{
  Blynk.virtualWrite(V1, flowRate);
  Blynk.virtualWrite(V2, totalVolume);
}

void setup()
{
  Serial.begin(115200);

  Blynk.begin(auth, ssid, pass);

  display.begin(SSD1306_SWITCHCAPVCC, 0x3C); // Inisialisasi OLED dengan alamat 0x3C
  display.clearDisplay();
  display.setTextColor(WHITE);
  display.setTextSize(1);

  display.setCursor(0, 0);
  display.println("Flowmeter Simulation:");
  display.display();
  
  timer.setInterval(10L, readPotentiometer);
  timer.setInterval(10L, sendSensorData);
}

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

    flowRate = analogRead(34) ;
    
    display.clearDisplay();

    display.setCursor(0, 10);
    display.print("Debit:    ");
    display.print(flowRate);
    display.print("L/m");

    display.setCursor(0, 32);
    display.print("Volume:   ");
    display.print(totalVolume);
    display.print("L");
  display.display();
}