#define BLYNK_TEMPLATE_ID "TMPL6LgMiSOvj"
#define BLYNK_TEMPLATE_NAME "lighting cc"
#define BLYNK_AUTH_TOKEN "Nckr2VMma41casAyz5d7H53k9wVWoKB8"

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

char auth[] = BLYNK_AUTH_TOKEN; // Auth Token
char ssid[] = "Wokwi-GUEST"; // WiFi SSID
char pass[] = ""; // WiFi Password

#define PIR_PIN 2 
#define LED_PIN 14   
#define LDR_PIN 13 

BlynkTimer timer;
bool manualControl = false; // To keep track of manual LED control

// Function to read the LDR value and map it to LED brightness
int getLEDBrightness() {
  int ldrValue = analogRead(LDR_PIN);
  int ledBrightness;

  // Define ranges and map LDR values to brightness
  if (ldrValue >= 0 && ldrValue < 1365) {
    // Low light
    ledBrightness = map(ldrValue, 0, 1364, 255, 170); // Map to a bright range
  } else if (ldrValue >= 1365 && ldrValue < 2730) {
    // Medium light
    ledBrightness = map(ldrValue, 1365, 2729, 169, 85); // Map to a medium range
  } else {
    // High light
    ledBrightness = map(ldrValue, 2730, 4095, 84, 0); // Map to a dim range
  }

  Serial.print("LDR Value: ");
  Serial.println(ldrValue);

  return ledBrightness;
}

// Switch control via Blynk
BLYNK_WRITE(V0) {
  int buttonState = param.asInt();
  if (buttonState == 1) {
    manualControl = true;
    digitalWrite(LED_PIN, HIGH);
  } else {
    manualControl = false;
    digitalWrite(LED_PIN, LOW);
  }
}

// Timer callback function to check brightness
void checkBrightness() {
  if (!manualControl) { // Only adjust brightness if manual control is off
    int pirState = digitalRead(PIR_PIN);
    
    if (pirState == HIGH) {
      // Motion detected
      int brightness = getLEDBrightness();
      analogWrite(LED_PIN, brightness);  // Set LED brightness based on LDR value
      Serial.print("Motion detected! LED brightness: ");
      Serial.println(brightness);
    } else {
      // No motion detected
      analogWrite(LED_PIN, 0);  // Turn off LED
      Serial.println("No motion detected. LED off.");
    }
  }
}

void setup() {
  pinMode(PIR_PIN, INPUT);  // Set PIR pin as input
  pinMode(LED_PIN, OUTPUT); // Set LED pin as output
  Serial.begin(115200);

  Blynk.begin(auth, ssid, pass);

  timer.setInterval(2000L, checkBrightness); // Check brightness every 2 seconds
}

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