#pragma once

// Qt
#include <QObject>
#include <QProcess>
#include <QFutureWatcher>

// Project
#include "main.h"
#include "Network.h"

// define
#define _WifiInterface WifiInterface::I()

/*!
 * \brief The WifiInterface class
 * Communicates with Access Points
 * \details
 * - Scans for Access Points
 * - Authenticates with Access Points
 * - Disconnects from Access Points
 */
class WifiInterface : public QObject
{
    Q_OBJECT

    QThread *_thread  = nullptr;
    bool     _init    = false;
    bool _scanRunning = false;
    int     _defaultTimeout = 5000;
    int     _dhcpTimeout = 10000;
    int     _scanTimeout = 30000;
    int     _processCounter = 0;
    QProcess _processScan;

    const QString _iface                 = "wlan0";
    const QString _wpaSupplicantConfPath = "/etc/wpa_supplicant.conf";


// Singleton
SINGLETON(WifiInterface)

private:
//    QFutureWatcher<void> _scanWatcher;

    bool generateWPASupplicant(const Network &vNetwork, const QString &vPassword);
    bool startWPASupplicant();
    bool requestAutoAssignedIP(int vTries = 4);
    Network::IPSettings getIPSettings();
    QString readIPSettings();
    QString readGateway();
    QString readDNS();
    QString parseIP(const QString &vOutput);
    QString parseBroadcast(const QString &vOutput);
    QString parseSubnetMask(const QString &vOutput);
    QString parseGateway(const QString &vOutput);
    QString parseDNS(const QString &vOutput);
    void onInitConnections();
    void onQuitThread();
    void timerEvent(QTimerEvent* event);
    void initThread(QThread &vThread);
    void quitThread();

public slots:
    bool init(QThread &vThread);
    bool init();
    void doScan();
    void doJoinNetwork(const Network &vNetwork, const QString &vPassword);
    void doDisconnectNetwork(const Network &vNetwork);
    void doRequestIPSettings();

private slots:
    void quit();

signals:
    void didAddNetwork(const Network);
    void didDisconnectNetwork(const Network);
    void didGetIPSettings(const Network::IPSettings);
    void didRequestScan();
    void didScan();

    // emitted from separate threads
    void didScanStatusChanged(const bool);
    void didConnectToNetwork(const Network);
    void didError(const QString);

private slots:
    void onQuit();
    void onParseWifiScan(const QString &vOutput);
    void onLogFailure(const QString &vMessage);
    void onScanFinished(int vExitCode, QProcess::ExitStatus vExitStatus);
    void onScan();
};