#include "buttons.h"

#ifdef FEATURE_PHYSICAL_BUTTONS
#include <bluefruit.h>

extern BLEHidAdafruit blehid;

static uint8_t physBtnMask = 0;   // bitmask of currently-pressed physical buttons

// Setup 
void setupPhysicalButtons() {
  // Release any held physical buttons before reconfiguring
  if (physBtnMask && Bluefruit.connected()) { blehid.mouseButtonRelease(); }
  physBtnMask = 0;

  if (cfg.btnLeftPin   != BTN_PIN_NONE) pinMode(cfg.btnLeftPin,   INPUT_PULLUP);
  if (cfg.btnRightPin  != BTN_PIN_NONE) pinMode(cfg.btnRightPin,  INPUT_PULLUP);
  if (cfg.btnMiddlePin != BTN_PIN_NONE) pinMode(cfg.btnMiddlePin, INPUT_PULLUP);

  bool any = (cfg.btnLeftPin != BTN_PIN_NONE) || (cfg.btnRightPin != BTN_PIN_NONE)
          || (cfg.btnMiddlePin != BTN_PIN_NONE);
  if (any) {
    Serial.print("[BTN] L=");
    cfg.btnLeftPin   == BTN_PIN_NONE ? Serial.print("--") : Serial.print(cfg.btnLeftPin);
    Serial.print(" R=");
    cfg.btnRightPin  == BTN_PIN_NONE ? Serial.print("--") : Serial.print(cfg.btnRightPin);
    Serial.print(" M=");
    cfg.btnMiddlePin == BTN_PIN_NONE ? Serial.print("--") : Serial.print(cfg.btnMiddlePin);
    Serial.println();
  }
}

// Poll and report 
// Called every loop iteration (before rate limiter) for immediate response.
// Uses active-low logic: INPUT_PULLUP, button connects pin to GND.
void processPhysicalButtons() {
  if (!Bluefruit.connected()) return;

  uint8_t newMask = 0;
  if (cfg.btnLeftPin   != BTN_PIN_NONE && digitalRead(cfg.btnLeftPin)   == LOW) newMask |= MOUSE_BUTTON_LEFT;
  if (cfg.btnRightPin  != BTN_PIN_NONE && digitalRead(cfg.btnRightPin)  == LOW) newMask |= MOUSE_BUTTON_RIGHT;
  if (cfg.btnMiddlePin != BTN_PIN_NONE && digitalRead(cfg.btnMiddlePin) == LOW) newMask |= MOUSE_BUTTON_MIDDLE;

  if (newMask != physBtnMask) {
    physBtnMask = newMask;
    if (physBtnMask) blehid.mouseButtonPress(physBtnMask);
    else             blehid.mouseButtonRelease();
    Serial.print("[BTN] mask=0x"); Serial.println(physBtnMask, HEX);
  }
}

#endif // FEATURE_PHYSICAL_BUTTONS