/* * ESP32 SMART LIGHTING SYSTEM (WOKWI)
 * Group Number: [Insert] | Section: [Insert]
 */

// Specific Pins
const int BUTTON_PIN = 4;    
const int LDR_PIN    = 34;   
const int POT_PIN    = 32;   
const int LED_PIN    = 2;    

// System States
bool systemOn = false;       // Requirement 1: Toggle State [cite: 25]
bool lastButtonState = HIGH; 

void setup() {
  Serial.begin(115200);
  pinMode(BUTTON_PIN, INPUT_PULLUP); // Requirement 1: Stable behavior [cite: 30]
  pinMode(LED_PIN, OUTPUT);
}

void loop() {
  // 1. BUTTON CONTROL LOGIC
  bool currentButtonState = digitalRead(BUTTON_PIN);
  if (lastButtonState == HIGH && currentButtonState == LOW) {
    systemOn = !systemOn; // Toggle: ON -> OFF -> ON [cite: 27, 28, 29]
    delay(200);           // Debounce for stable behavior [cite: 30]
  }
  lastButtonState = currentButtonState;

  // 2. READ SENSORS
  int ldrValue = analogRead(LDR_PIN);    
  int potValue = analogRead(POT_PIN);    
  int brightness = 0;

  // 3. HIERARCHICAL LOGIC [cite: 31, 38]
  if (systemOn) {
    // NIGHT MODE CHECK: Only works if LED is ON [cite: 35]
    if (ldrValue < 1500) {
      // BRIGHTNESS ADJUSTMENT: Only if Button is ON AND LDR < 1500 
      brightness = map(potValue, 0, 4095, 0, 255);
    } else {
      // Above 1500: LED turns OFF 
      brightness = 0;
    }
  } else {
    // If System/Button is OFF, LDR and Pot do nothing [cite: 34, 42]
    brightness = 0;
  }

  // Apply the final calculated brightness
  analogWrite(LED_PIN, brightness);

  // 4. SERIAL MONITOR OUTPUT [cite: 62]
  Serial.print("Button: "); Serial.print(systemOn ? "ON" : "OFF");
  Serial.print(" | Potentiometer: "); Serial.print(potValue);
  Serial.print(" | Brightness: "); Serial.print(brightness);
  Serial.print(" | LDR: "); Serial.print(ldrValue);
  Serial.print(" | Night Mode: "); Serial.println(ldrValue < 1500 ? "Active" : "Inactive");

  delay(100); 
}