#include "ConnectionStatus.h"

#include <QQmlEngine>

namespace {

ConnectionStatus* g_instance = nullptr;

}  // namespace

ConnectionStatus::ConnectionStatus(QObject* parent) : QObject(parent) {
  Q_ASSERT(!g_instance);
  g_instance = this;
}

ConnectionStatus::~ConnectionStatus() { g_instance = nullptr; }

void ConnectionStatus::setDevice(const QString& deviceName,
                                 const QString& broker) {
  m_configured = true;
  m_deviceName = deviceName;
  m_broker = broker;
  emit changed();
}

void ConnectionStatus::setConnection(MqttClient::State state,
                                     const QString& error) {
  switch (state) {
    case MqttClient::State::Disconnected:
      m_state = State::Disconnected;
      break;
    case MqttClient::State::Connecting:
      m_state = State::Connecting;
      break;
    case MqttClient::State::Connected:
      m_state = State::Connected;
      break;
  }
  if (!error.isEmpty()) m_lastError = error;
  emit changed();
}

ConnectionStatus* ConnectionStatus::create(QQmlEngine*, QJSEngine*) {
  Q_ASSERT(g_instance);
  // Owned by the app, not by the QML engine.
  QJSEngine::setObjectOwnership(g_instance, QJSEngine::CppOwnership);
  return g_instance;
}