// IFALAH DHIAULHAQ
// HIRZAL AZKIYA
// UTS

#define BLYNK_PRINT Serial
#define BLYNK_TEMPLATE_ID "TMPL69ynBGCyq"
#define BLYNK_TEMPLATE_NAME "IoT Sensor LDR"
#define BLYNK_AUTH_TOKEN "SYimNCDfj-cjclDOjp4xCsRUABdhhwKT"

#include <MD_Parola.h>
#include <MD_MAX72xx.h>
#include <SPI.h>

#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>

#define HARDWARE_TYPE MD_MAX72XX::PAROLA_HW

#define MAX_DEVICES 4
#define CS_PIN 5
#define LDR_PIN 36
#define LED_PIN 22

MD_Parola Display = MD_Parola(HARDWARE_TYPE, CS_PIN, MAX_DEVICES);

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


const float GAMMA = 0.7;
const float RL10 = 50;

void redled (float lux) {
  if (lux <= 10) {
    Serial.println(" => Malam");
    Display.displayText("malam", PA_CENTER, 10, 0, PA_SCROLL_LEFT, PA_SCROLL_LEFT);
  } else if (lux <= 1000) {
    Serial.println(" => Pagi/Mendung");
    Display.displayText("pagi", PA_CENTER, 10, 0, PA_SCROLL_LEFT, PA_SCROLL_LEFT);
  } else if (lux <= 10000) {
    Serial.println(" => Siang");
    Display.displayText("siang", PA_CENTER, 10, 0, PA_SCROLL_LEFT, PA_SCROLL_LEFT);
  } else  {
    Serial.println(" => Siang Sangat Terang");
    Display.displayText("sangat cerah", PA_CENTER, 10, 0, PA_SCROLL_LEFT, PA_SCROLL_LEFT);
  }
  delay(500);
}

void sendData() {
  int light = analogRead(LDR_PIN);
  float voltage = light / 4095. * 5 ;
  float resistance = 2000 * voltage / (1 - voltage / 5);
  float lux = pow(RL10 * 1e3 * pow(10, GAMMA) / resistance, (1 / GAMMA));

  Blynk.virtualWrite(V1, light);
  Blynk.virtualWrite(V2, lux);

  if  (Display.displayAnimate()) {
    Serial.print("Sending data...");
    Serial.print("  analog: ");
    Serial.print(light);
    Serial.print(" lux: ");
    Serial.print(lux);

    if (lux <= 10) {
      digitalWrite(LED_PIN, HIGH);
      Blynk.virtualWrite(V3, 255);
      redled(lux);
    }
    else {
      digitalWrite(LED_PIN, LOW);
      Blynk.virtualWrite(V3, 0);
      redled(lux);
    }

    Display.displayReset();
  }
}


BlynkTimer Timer;


BLYNK_WRITE(V3) {
  if (param.asInt() == 255) {
    digitalWrite(LED_PIN, HIGH);
  }
  else {
    digitalWrite(LED_PIN, LOW);
  }
}

void setup() {
  pinMode(LDR_PIN, INPUT);
  pinMode(LED_PIN, OUTPUT);

  Serial.begin(115200);

  delay(1000);
  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);

  Display.begin();
  Display.setIntensity(0);
  Display.displayClear();

  timer.setInterval(1L, sendData);
}


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