#ifndef LIBIP_WIRELESS_H
#define LIBIP_WIRELESS_H

#include <QObject>
#include <QMap>
#include "libip_global.h"
#include <linux/nl80211.h>
#include <QRegularExpression>

class LIBIP_EXPORT Wireless : public QObject {
//Q_OBJECT
// no Q_OBJECT macro here because clang linker complains about missing vtable, probably because we aren't using any signals/slots

public:
  Wireless(QString interface = QString());
  ~Wireless();

  struct ChannelInfo {
    int chan;
    int freq;

    // these boolean values may change depending on the current regulatory domain set
    bool disabled; // both TX/RX disabled
    bool passive; // RX-only channel
    bool radar; // DFS (radar detection) required

    int max_txpower; // in millibels (mBm); 100 mBm = 1 dBm

    ChannelInfo() :
    chan(0),
    freq(0),
    disabled(false),
    passive(false),
    radar(false),
    max_txpower(0)
    {
    }
  };

  struct BandInfo {
    int band;
    int width;
    int protocols;
    QList<ChannelInfo> channels;

    BandInfo() :
    band(0),
    width(0),
    protocols(0),
    channels()
    {
    }
  };

  enum Bands {
    BAND_2GHZ =  (1 << 0),
    BAND_5GHZ =  (1 << 1),
    BAND_60GHZ = (1 << 2)
  };

  enum Protocols {
    PROTOCOL_80211_A = (1 << 0),
    PROTOCOL_80211_B = (1 << 1),
    PROTOCOL_80211_G = (1 << 2),
    PROTOCOL_80211_N = (1 << 3)
  };

  enum Direction {
    Direction_RX   = (1 << 0),
    Direction_Both = (1 << 1)
  };

  enum ChannelWidth {
    WIDTH_20MHZ  = (1 << 0),
    WIDTH_40MHZ  = (1 << 1),
    WIDTH_80MHZ  = (1 << 2),
    WIDTH_160MHZ = (1 << 3)
  };

  const QString& name() const;
  const QList<BandInfo>& bandMap() const;
  QList<int> allChannels() const;
  QList<int> allowedChannels(Direction direction) const;
  QList<int> allFrequencies() const;
  QList<int> allowedFrequencies(Direction direction) const;
  static int ChanToFreq(int channel);
  static QString ChanToFreq(QString channel, QString outputFormat = QString());
  static int FreqToChan(int frequency);
  static QString FreqToChan(QString frequency, QString outputFormat = QString());
  static QStringList interfaceList();
  bool isValid() const;
  bool isNL80211() const;
  bool channelSupported(int channel) const;
  bool frequencySupported(int frequency) const;
  nl80211_iftype getInterfaceTypeRaw();
  const QString& getInterfaceType() const;

private:
  QString m_interface;
  QString m_interfaceType;
  QList<BandInfo> m_bands;
  bool m_isValid;
  bool m_isNL80211;
  nl80211_iftype m_iftype;

  bool parseBands();
  bool parseInterface();
  static int nl80211_interface_cb(struct nl_msg *msg, void *arg);
  static int nl80211_freqlist_cb(struct nl_msg *msg, void *arg);
  static int nl80211_error_cb(struct sockaddr_nl *nla, struct nlmsgerr *err, void *arg);
  static int nl80211_finish_cb(struct nl_msg *msg, void *arg);
  char* nl80211_find_parent(const char *interface) const;
  void nl80211_disconnect(void *handle, struct nl_cache *cache, struct genl_family *family) const;
  int nl80211_connect(const char *interface, void **handle, struct nl_cache **cache, struct genl_family **family) const;
};

#endif // LIBIP_WIRELESS_H