/* * Task 1: Basic API Programming 
 * This code demonstrates a simple Serial API to control an LED.
 */

const int ledPin = 2; // LED connected to GPIO 2

void setup() {
  // Initialize Serial communication at 115200 bits per second:
  Serial.begin(115200);
  
  // Set the LED pin as an output:
  pinMode(ledPin, OUTPUT);
  
  Serial.println("API System Ready. Please enter 'ON' or 'OFF'...");
}

void loop() {
  // Check if there is an incoming API request (Serial data)
  if (Serial.available() > 0) {
    String request = Serial.readStringUntil('\n'); // Read the request
    request.trim(); // Remove any extra spaces or hidden characters

    // API Logic
    if (request == "ON") {
      digitalWrite(ledPin, HIGH);
      Serial.println("Response: { 'status': 'success', 'message': 'LED is now ON' }");
    } 
    else if (request == "OFF") {
      digitalWrite(ledPin, LOW);
      Serial.println("Response: { 'status': 'success', 'message': 'LED is now OFF' }");
    } 
    else {
      Serial.println("Response: { 'status': 'error', 'message': 'Invalid Command' }");
    }
  }
}