/*
 * ContactNode.cpp
 * Homie Node for a Contact switch
 *
 * Version: 1.0
 * Author: Lübbe Onken (http://github.com/luebbe)
 */

#include "ContactNode.hpp"

ContactNode::ContactNode(const char *name,
                         const int contactPin,
                         TContactCallback contactCallback)
    : HomieNode(name, "ContactNode", "sensor")
{
  _contactPin = contactPin;
  _contactCallback = contactCallback;
}

int ContactNode::getContactPin()
{
  return _contactPin;
}

byte ContactNode::readPin()
{
  return digitalRead(_contactPin);
}

// Debounce input pin.
bool ContactNode::debouncePin(void)
{
  byte inputState = readPin();
  if (inputState != _lastInputState)
  {
    _stateChangedTime = millis();
    _stateChangeHandled = false;
    _lastInputState = inputState;
#ifdef DEBUG
    Homie.getLogger() << "State Changed to " << inputState << endl;
#endif
  }
  else
  {
    unsigned long dt = millis() - _stateChangedTime;
    if (dt >= DEBOUNCE_TIME && !_stateChangeHandled)
    {
#ifdef DEBUG
      Homie.getLogger() << "State Stable for " << dt << "ms" << endl;
#endif
      _stateChangeHandled = true;
      return true;
    }
  }
  return false;
}

void ContactNode::handleStateChange(bool open)
{
  if (Homie.isConnected())
  {
    setProperty("open").send(open ? "true" : "false");
  }
  if (_contactCallback)
  {
    _contactCallback(open);
  }

  printCaption();
  Homie.getLogger() << cIndent << "is " << (open ? "open" : "closed") << endl;
}

void ContactNode::onChange(TContactCallback contactCallback)
{
  _contactCallback = contactCallback;
}

void ContactNode::printCaption()
{
  Homie.getLogger() << cCaption << endl;
}

void ContactNode::loop()
{
  if (_contactPin > DEFAULTPIN)
  {
    if (debouncePin() && (_lastSentState != _lastInputState))
    {
      handleStateChange(_lastInputState == HIGH);
      _lastSentState = _lastInputState;
    }
  }
}

void ContactNode::setupPin()
{
  pinMode(_contactPin, INPUT_PULLUP);
}

void ContactNode::setup()
{
  advertise("open");

  printCaption();
  Homie.getLogger() << cIndent << "Pin: " << _contactPin << endl;

  if (_contactPin > DEFAULTPIN)
  {
    setupPin();
  }
}