#include <Arduino.h>
#include <USB.h>
#include <USBHIDMouse.h>
#include <tusb.h>

USBHIDMouse Mouse;

#define LED_BUILTIN 48

const int buttonPin = 0;
int previousButtonState = HIGH;

void smoothMouseMove(int xOffset, int yOffset, unsigned long durationMs, float steps) {
  if (steps <= 0) {
    // Avoid division by zero or infinite loop if steps is non-positive
    Mouse.move(xOffset, yOffset); // Fallback to instant move
    return;
  }

  // Calculate the movement per step for X and Y
  float xStep = (float)xOffset / steps;
  float yStep = (float)yOffset / steps;

  // Calculate the delay between each step
  unsigned long delayPerStep = durationMs / steps;

  // Perform the movement in small steps
  for (int i = 0; i < steps; i++) {
    // Move the mouse by the calculated step amount.
    // We cast to int because Mouse.move expects integers,
    // but float calculations ensure more accurate distribution over steps.
    Mouse.move((int)xStep, (int)yStep);
    delay(delayPerStep); // Pause for a short duration
  }

  // Handle any remaining fractional movement due to integer casting
  // This ensures the mouse ends up exactly at the target offset
  int remainingX = xOffset - (int)(xStep * steps);
  int remainingY = yOffset - (int)(yStep * steps);
  if (remainingX != 0 || remainingY != 0) {
    Mouse.move(remainingX, remainingY);
  }
}

void setup() {
  delay(1000);

  Serial.begin(115200);
  Serial.println("Starting ESP32-S3 USB Mouse");

  pinMode(LED_BUILTIN, OUTPUT);

  USB.begin();
  Mouse.begin();

  delay(2000);
}

void loop() {
  int buttonState = digitalRead(buttonPin);
  const int desktopFullScreenWidth = 1920;        // To move my mouse a whole screen width to the right on a 1080p screen
  const int purepixels = 6230;
  const int kiripurepixels = 12995;

  const int input = purepixels;

  if ((buttonState != previousButtonState) && (buttonState == LOW)) {
    digitalWrite(LED_BUILTIN, LOW);
    smoothMouseMove(input, 0, 1500, (input / 10));
    delay(500);
    Serial.println("Button Pressed - Mouse should have sent event.");
  }
  previousButtonState = buttonState;
  
  digitalWrite(LED_BUILTIN, HIGH);
}