#define THRESHOLD 2045 
const int BUTTON_1_PIN = 14; 
const int BUTTON_2_PIN = 27; 
const int RELAY_PIN = 5 ;  
#define WHITE_LED_PIN 2       
#define RED_LED_PIN 12         
const int LDR_SENSOR_PIN  = 34 ;   

bool isAutoMode = false;      
bool manualRelayState = LOW;  

void setup() {
  pinMode(WHITE_LED_PIN, OUTPUT);
  pinMode(RED_LED_PIN, OUTPUT);
  pinMode(RELAY_PIN, OUTPUT);
  pinMode(BUTTON_1_PIN, INPUT_PULLUP);
  pinMode(BUTTON_2_PIN, INPUT_PULLUP);
  pinMode(LDR_SENSOR_PIN, INPUT);
  
  Serial.begin(115200);
}

void loop() {
  if (digitalRead(BUTTON_1_PIN) == LOW) {
    isAutoMode = !isAutoMode;  
    delay(300);  
    Serial.print("Mode Changed to: ");
    Serial.println(isAutoMode ? "AUTO" : "MANUAL");
  }

  if (isAutoMode) {
    int ldrValue = analogRead(LDR_SENSOR_PIN); 
    Serial.print("LDR Value: ");
    Serial.println(ldrValue);
    
    if (ldrValue < THRESHOLD) {  
      Serial.print("Light!\n");
      digitalWrite(RELAY_PIN, LOW);       
      digitalWrite(WHITE_LED_PIN, LOW);   
    } else { 
      Serial.print("Dark!\n");
      digitalWrite(RELAY_PIN, HIGH);        
      digitalWrite(WHITE_LED_PIN, HIGH);    
    }
    digitalWrite(RED_LED_PIN, HIGH); 
  } else {
    if (digitalRead(BUTTON_2_PIN) == LOW) {
      manualRelayState = !manualRelayState;  
      delay(300);  
    }
    digitalWrite(RED_LED_PIN, LOW); 
    digitalWrite(RELAY_PIN, manualRelayState); 
    digitalWrite(WHITE_LED_PIN, manualRelayState); 
    digitalWrite(WHITE_LED_PIN, LOW);  
  }
}