/**
 // This code configures an ESP32C3 as a bluetooth keyboard
 */
#include <BleKeyboard.h>

BleKeyboard bleKeyboard;

// Define GPIO pins for switches
const int switchLeftPin = 2; //Left Arrow Key
const int switchCapsSpacePin = 3; // Capslock + Spacebar
const int switchRightPin = 4; //Right Arrow Key

// Variable to store the state of switches
bool lastLeftState = HIGH;
bool lastCapsSpaceState = HIGH;
bool lastRightState = HIGH;

void setup () {
  Serial.begin(115200);

  //Initialize BLE Keyboard
  bleKeyboard.begin();

  // Configure GPIO pins as inputs w/ pull-up resistors
  pinMode(switchLeftPin, INPUT_PULLUP);
  pinMode(switchCapsSpacePin, INPUT_PULLUP);
  pinMode(switchRightPin, INPUT_PULLUP);

  Serial.println("Bluetooth Keyboard started, waiting for connection...");
}

void loop() {
  //Ensure BLE is connected
  if (bleKeyboard.isConnected()) {
    //Read switch states
    bool currentLeftState = digitalRead(switchLeftPin);
    bool currentCapsSpaceState = digitalRead(switchCapsSpacePin);
    bool currentRightState = digitalRead(switchRightPin);

    //Check for left arrow key press
    if (currentLeftState == LOW && lastLeftState == HIGH) {
      Serial.println("Left arrow pressed");
      bleKeyboard.press(KEY_LEFT_ARROW);
      delay(100); //Debounce delay
      bleKeyboard.release(KEY_LEFT_ARROW);
    }
    //Check for Caps + Space key press
    if (currentCapsSpaceState == LOW && lastCapsSpaceState == HIGH) {
      Serial.println("Caps + Space Pressed");
      bleKeyboard.press(KEY_CAPS_LOCK);
      bleKeyboard.press(' '); //Spacebar
      delay(100); //Debounce delay
      bleKeyboard.release(KEY_CAPS_LOCK);
      bleKeyboard.release(' ');
    }
    //Check for right arrow key press
    if (currentRightState == LOW && lastRightState == HIGH) {
      Serial.println("Right arrow pressed");
      bleKeyboard.press(KEY_RIGHT_ARROW);
      delay(100); //Debounce delay
      bleKeyboard.release(KEY_RIGHT_ARROW);
    }

    // Update last state variables
    lastLeftState = currentLeftState;
    lastCapsSpaceState = currentCapsSpaceState;
    lastRightState = currentRightState;
  } else {
  Serial.println("Waiting for connection...");
  delay(1000);
  }

delay(10); // Short delay to prevent spamming
}