#include <IRremote.h>

#define ledPin  33         // choose the pin for the LED
#define PIR 32            // PIR sensor pin
#define LDR 25            // LDR pin
#define IRreceiver 26     // IRreceiver pin 
#define relayPin 27       // relay pin

IRrecv receiver(IRreceiver);
decode_results results;

String mode="Motion";
String LightState="OFF";

void setup() {
  pinMode(ledPin, OUTPUT);      // declare LED as output
  pinMode(relayPin, OUTPUT);      // declare relayPin as output
  pinMode(PIR, INPUT);        // declare PIR sensor as input
  pinMode(LDR, INPUT);         //declare LDR sensor as input
  pinMode(IRreceiver, INPUT);  //declare IRreceiver sensor as input
  Serial.begin(9600);
  Serial.println("Hello, ESP32!");
  receiver.enableIRIn();
}


void loop(){
  long statePIR = digitalRead(PIR);
  long stateLDR = digitalRead(LDR);
  if (receiver.decode(&results)) {
    Serial.println(results.value,HEX);
    if (results.value==0xF0DB1AE0){
      mode="Remote";
      LightState="ON";
      digitalWrite (ledPin, HIGH);
      digitalWrite (relayPin, HIGH);
      Serial.println("Remote ON");      
    }
    else if (results.value==0x298E8724){
      mode="Motion";
      LightState="OFF";
      digitalWrite (ledPin, LOW);
      digitalWrite (relayPin, LOW);
      Serial.println("Remote OFF");  
    }
    receiver.resume();
  }
  else if (mode=="Motion"){
    if (statePIR == HIGH && stateLDR==HIGH){
      LightState="ON";
      digitalWrite (ledPin, HIGH);
      digitalWrite (relayPin, HIGH);
      Serial.println("Motion detected in dark!");
      delay(1000);
    }
    else {
      LightState="OFF";
      digitalWrite (ledPin, LOW);
      digitalWrite (relayPin, LOW);
      Serial.println("Light OFF");
      delay(1000);
    }
  }

}