#define BLYNK_TEMPLATE_ID "TMPL6k1epCNhN"
#define BLYNK_TEMPLATE_NAME "fyp home automation"
#define BLYNK_AUTH_TOKEN "f48GaDDQqV4zCdZhDPzsoSbJs8NFGMXF"

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

// Blynk authentication
char auth[] = BLYNK_AUTH_TOKEN;
char ssid[] = "Wokwi-GUEST"; // wifi
char pass[] = ""; // password wifi

// define semua pin sini
#define PIR_PIN 2 
#define FAN_PIN 5
#define LED_PIN 14   
#define LDR_PIN 13 
#define DHT_PIN 15
#define RELAY 21

DHTesp dht;
BlynkTimer timer;

//manual control?? more like pausing rn
bool manualLEDControl = false;
bool tempControl = false;

// untuk led brightness (tapi tak berapa jadi)!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
int getLEDBrightness() {
  int ldrValue = analogRead(LDR_PIN);
  // Map LDR value (0-4095) to LED brightness (0-255)
  int brightValue = map(ldrValue, 0, 4095, 100, 0);
  int ledBrightness = map(brightValue, 0, 100, 255, 100);  // Inverse mapping
  return ledBrightness;
}

// send temp to blynk
void sendDHTdata() {
  float temp = dht.getTemperature();

  // data view
  Serial.print("Temperature: ");
  Serial.print(temp);
  Serial.println("C ");

  if(temp >= 27) {
    digitalWrite(FAN_PIN, HIGH);
    Serial.println("Fan ON");
  } else {
    digitalWrite(FAN_PIN, LOW);
    Serial.println("Fan OFF");
  }

  Blynk.virtualWrite(V0, temp); // pin V0 in Blynk
}

//manual FAN control(red led ah)
BLYNK_WRITE(V3) {
  int buttonState = param.asInt();
  tempControl = (buttonState == 1);
  pinMode(FAN_PIN, OUTPUT);
  if (tempControl = 1) {
    digitalWrite(FAN_PIN, HIGH);
    Serial.println("Fan ON (Manual)");
  } else {
    digitalWrite(FAN_PIN, LOW);
    Serial.println("Fan OFF (Manual)");
  }
}

//relay appl
BLYNK_WRITE(V1) {
 int SW_relay = param.asInt();
 if (SW_relay == 1) {
   digitalWrite(RELAY, HIGH);
   Serial.println("Relay ON");
   Blynk.virtualWrite(V1, HIGH);
 }
 else {
   digitalWrite(RELAY, LOW);
   Serial.println("Relay OFF");
   Blynk.virtualWrite(V1, LOW);
 }
}

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

  dht.setup(DHT_PIN, DHTesp::DHT22); // Initialize DHT sensor
  Blynk.begin(auth, ssid, pass);
  
  timer.setInterval(2000L, sendDHTdata); // Send DHT data every 2 seconds
}

void loop() {
  Blynk.run();
  timer.run();
  
  if (!manualLEDControl) {
    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.");
    }
  }

  delay(2000); // delay serial 2 saat
}