// -*- Mode: C++ -*-
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#ifdef QT5
#include <QtWidgets>
#else
#include <QtGui>
#endif
#include <QAbstractSocket>
#include <QAudioDevice>
#include <QDateTime>
#include <QDir>
#include <QHash>
#include <QHostAddress>
#include <QLabel>
#include <QList>
#include <QMainWindow>
#include <QMutex>
#include <QMutexLocker>
#include <QPair>
#include <QPointer>
#include <QProgressBar>
#include <QProgressDialog>
#include <QScopedPointer>
#include <QSet>
#include <QTableWidget>
#include <QTextEdit>
#include <QThread>
#include <QTimer>
#include <QVector>

#include <functional>
#include <unordered_map>

#include "JS8_Audio/AudioDevice.h"
#include "JS8_Audio/NotificationAudio.h"
#include "JS8_Deprecated/DisplayManual.h"
#include "JS8_Include/commons.h"
#include "JS8_Include/qpriorityqueue.h"
#include "JS8_Logbook/logbook.h"
#include "JS8_Main/APRSISClient.h"
#include "JS8_Main/FrequencyList.h"
#include "JS8_Main/JS8MessageBox.h"
#include "JS8_Main/MessageClient.h"
#include "JS8_Main/MessageServer.h"
#include "JS8_Main/Modes.h"
#include "JS8_Main/ProcessThread.h"
#include "JS8_Main/Radio.h"
#include "JS8_Main/StationList.h"
#include "JS8_Main/TxLoop.h"
#include "JS8_Main/varicode.h"
#include "JS8_Mode/JS8.h"
#include "JS8_Network/NetworkAccessManager.h"
#include "JS8_Network/PSKReporter.h"
#include "JS8_Network/SpotClient.h"
#include "JS8_Network/TCPClient.h"
#include "JS8_Transceiver/Transceiver.h"
#include "JS8_UDP/WSJTXMessageClient.h"
#include "JS8_UDP/WSJTXMessageMapper.h"
#include "JS8_UI/Configuration.h"

extern int volatile itone[JS8_NUM_SYMBOLS]; // Audio tones for all Tx symbols

//--------------------------------------------------------------- MainWindow
namespace Ui {
class MainWindow;
}

class QSettings;
class QLineEdit;
class QFont;
class QHostInfo;
class WideGraph;
class LogQSO;
class Transceiver;
class MessageClient;
class QTime;
class HelpTextWindow;
class SoundOutput;
class Modulator;
class SoundInput;
class Detector;
class MultiSettings;
class DecodedText;
class JSCChecker;

using namespace std;
typedef std::function<void()> Callback;

class WSJTXMessageMapper; // Forward declaration

class MainWindow : public QMainWindow {
    Q_OBJECT;
    friend class WSJTXMessageMapper; // Allow WSJTXMessageMapper to access
                                     // private members

    struct CallDetail;
    struct CommandDetail;

  public:
    using Frequency = Radio::Frequency;
    using FrequencyDelta = Radio::FrequencyDelta;
    using Mode = Modes::Mode;

    explicit MainWindow(QString const &program_info, QDir const &temp_directory,
                        bool multiple, MultiSettings *settings,
                        QWidget *parent = nullptr);
    ~MainWindow();

  private:
    struct SortByReverse {
        QString by;
        bool reverse;
    };

    /**
     * Sometimes, buttons are triggered by code and this refers
     * to a momentary situation only.  Sometimes, the trigger
     * pertains to the long term processing, that is, it should
     * influence (shut off, mostly) the automatic transmit loops
     * for HB and CQ.
     *
     * In an ugly klugde, we try to distinguish these cases
     * via these three *IsLongterm variables.
     */
    bool m_stopTxButtonIsLongterm;
    bool m_hbButtonIsLongterm;
    bool m_cqButtonIsLongterm;

  public slots:
    void showSoundInError(const QString &errorMsg);
    void showSoundOutError(const QString &errorMsg);
    void showStatusMessage(const QString &statusMsg);
    void dataSink(qint64 frames);
    /**
     * The name `guiUpdate` suggests updating of the views from the models
     * (in MVC terms, but we don't do MVC in this project), animations and
     * stuff. While it indeed does that, this also contains controller code.
     */
    void guiUpdate();
    void setXIT(int n);
    void qsy(int hzDelta);
    void onDriftChanged(qint64 new_drift_ms);
    void setFreqOffsetForRestore(int freq, bool shouldRestore);
    bool tryRestoreFreqOffset();
    void changeFreq(int);

    bool hasExistingMessageBufferToMe(int *pOffset);
    bool hasExistingMessageBuffer(int submode, int offset, bool drift,
                                  int *pPrevOffset);
    bool hasClosedExistingMessageBuffer(int offset);
    void logCallActivity(CallDetail d, bool spot = true);
    void logHeardGraph(QString from, QString to);
    QString lookupCallInCompoundCache(QString const &call);
    void cacheActivity(QString key);
    void restoreActivity(QString key);
    void clearActivity();
    void clearBandActivity();
    void clearRXActivity();
    void clearCallActivity();
    void createGroupCallsignTableRows(QTableWidget *table,
                                      const QString &selectedCall,
                                      bool &showIconColumn);
    void displayTextForFreq(QString text, int freq, QDateTime date, bool isTx,
                            bool isNewLine, bool isLast);
    void writeNoticeTextToUI(QDateTime date, QString text);
    int writeMessageTextToUI(QDateTime date, QString text, int freq, bool isTx,
                             int block = -1);
    bool isMessageQueuedForTransmit();
    bool isInDecodeDelayThreshold(int seconds);
    void prependMessageText(QString text);
    void addMessageText(QString text, bool clear = false,
                        bool selectFirstPlaceholder = false);
    void confirmThenEnqueueMessage(int timeout, int priority, QString message,
                                   int offset, Callback c);
    void enqueueMessage(int priority, QString message, int offset, Callback c);
    void resetMessage();
    void resetMessageUI();
    void restoreMessage();
    void initializeDummyData();
    void initializeGroupMessageDummyData();
    bool ensureCallsignSet(bool alert = true);
    bool ensureKeyNotStuck(QString const &text);
    bool ensureNotIdle();
    bool ensureCanTransmit();
    bool ensureCreateMessageReady(const QString &text);
    QString createMessage(QString const &text, bool *pDisableTypeahead);
    QString appendMessage(QString const &text, bool isData,
                          bool *pDisableTypeahead);
    QString createMessageTransmitQueue(QString const &text, bool reset,
                                       bool isData, bool *pDisableTypeahead);
    void resetMessageTransmitQueue();
    QPair<QString, int> popMessageFrame();
    void tryNotify(const QString &key);
    void processDecodeEvent(JS8::Event::Variant const &);

    void updateCQButtonDisplay();
    void updateHBButtonDisplay();

  protected:
    void keyPressEvent(QKeyEvent *) override;
    void closeEvent(QCloseEvent *) override;
    void childEvent(QChildEvent *) override;
    bool eventFilter(QObject *, QEvent *) override;

  private slots:
    void initialize_fonts();
    void on_menuModeJS8_aboutToShow();
    void on_menuControl_aboutToShow();
    void on_actionCheck_for_Updates_triggered();
    void on_actionEnable_Monitor_RX_toggled(bool checked);
    void on_actionEnable_Transmitter_TX_toggled(bool checked);
    void on_actionEnable_Reporting_SPOT_toggled(bool checked);
    void on_actionEnable_Tuning_Tone_TUNE_toggled(bool checked);
    void on_menuWindow_aboutToShow();
    void on_actionFocus_Message_Receive_Area_triggered();
    void on_actionFocus_Message_Reply_Area_triggered();
    void on_actionFocus_Band_Activity_Table_triggered();
    void on_actionFocus_Call_Activity_Table_triggered();
    void on_actionClear_All_Activity_triggered();
    void on_actionClear_Band_Activity_triggered();
    void on_actionClear_RX_Activity_triggered();
    void on_actionClear_Call_Activity_triggered();
    void on_actionSetOffset_triggered();
    void on_actionShow_Fullscreen_triggered(bool checked);
    void on_actionShow_Statusbar_triggered(bool checked);
    void on_actionShow_Frequency_Clock_triggered(bool checked);
    void on_actionShow_Band_Activity_triggered(bool checked);
    void on_actionShow_Band_Heartbeats_and_ACKs_triggered(bool checked);
    void on_actionShow_Call_Activity_triggered(bool checked);
    void on_actionShow_Waterfall_triggered(bool checked);
    void on_actionShow_Waterfall_Controls_triggered(bool checked);
    void on_actionShow_Waterfall_Time_Drift_Controls_triggered(bool checked);
    void on_actionReset_Window_Sizes_triggered();
    void on_actionSettings_triggered();
    void openSettings(int tab = 0);
    void prepareApi();
    void prepareSpotting();
    void on_spotButton_clicked(bool checked);
    void on_monitorButton_clicked(bool);
    void on_actionAbout_triggered();
    void resetPushButtonToggleText(QPushButton *btn);
    void on_stopTxButton_clicked();
    void on_dialFreqUpButton_clicked();
    void on_dialFreqDownButton_clicked();
    void on_actionAdd_Log_Entry_triggered();
    void on_actionOpen_log_directory_triggered();
    void on_actionCopyright_Notice_triggered();
    void on_actionUser_Guide_triggered();
    bool decode(qint32 k);
    bool isDecodeReady(int submode, qint32 k, qint32 k0,
                       qint32 *pCurrentDecodeStart, qint32 *pNextDecodeStart,
                       qint32 *pStart, qint32 *pSz, qint32 *pCycle);
    bool decodeEnqueueReady(qint32 k, qint32 k0);
    bool decodeEnqueueReadyExperiment(qint32 k, qint32 k0);
    bool decodeProcessQueue(qint32 *pSubmode);
    void decodeStart();
    void decodeBusy(bool b);
    void decodeDone();
    void on_startTxButton_toggled(bool checked);
    void toggleTx(bool start);
    void on_logQSOButton_clicked();
    void on_actionModeJS8HB_toggled(bool checked);
    void on_actionModeJS8Normal_triggered();
    void on_actionModeJS8Fast_triggered();
    void on_actionModeJS8Turbo_triggered();
    void on_actionModeJS8Slow_triggered();
    void on_actionModeJS8Ultra_triggered();
    void on_actionHeartbeatAcknowledgements_toggled(bool checked);
    void on_actionModeMultiDecoder_toggled(bool checked);
    void on_actionModeAutoreply_toggled(bool checked);
    bool canCurrentModeSendHeartbeat() const;
    void prepareMonitorControls();
    void prepareHeartbeatMode(bool enabled);
    void f11f12(int n);
    void on_actionErase_ALL_TXT_triggered();
    void on_actionErase_js8call_log_adi_triggered();
    void startTx();
    void stopTx();
    void stopTx2();
    void buildFrequencyMenu(QMenu *menu);
    void buildHeartbeatMenu(QMenu *menu);
    void buildCQMenu(QMenu *menu);
    void buildRepeatMenu(QMenu *menu, QPushButton *button, bool isLowInterval,
                         int *interval);
    void sendHB();
    void sendHeartbeatAck(QString to, int snr, QString extra);
    void on_hbMacroButton_toggled(bool checked);
    void on_hbMacroButton_clicked();
    void sendCQ(bool repeat = false);
    void on_cqMacroButton_toggled(bool checked);
    void on_cqMacroButton_clicked();
    void on_replyMacroButton_clicked();
    void on_snrMacroButton_clicked();
    void on_infoMacroButton_clicked();
    void on_statusMacroButton_clicked();
    void setShowColumn(QString tableKey, QString columnKey, bool value);
    bool showColumn(QString tableKey, QString columnKey, bool default_ = true);
    void buildShowColumnsMenu(QMenu *menu, QString tableKey);
    void setSortBy(QString key, QString value);
    QString getSortBy(QString const &key, QString const &defaultValue) const;
    SortByReverse getSortByReverse(QString const &key,
                                   QString const &defaultValue) const;
    void buildSortByMenu(QMenu *menu, QString key, QString defaultValue,
                         QList<QPair<QString, QString>> values);
    void buildBandActivitySortByMenu(QMenu *menu);
    void buildCallActivitySortByMenu(QMenu *menu);
    void buildQueryMenu(QMenu *, QString callsign);
    QMap<QString, QString> buildMacroValues();
    void buildColumnLabelMap();
    void buildSuggestionsMenu(QMenu *menu, QTextEdit *edit,
                              const QPoint &point);
    void buildSavedMessagesMenu(QMenu *menu);
    void buildRelayMenu(QMenu *menu);
    QAction *buildRelayAction(QString call);
    void buildEditMenu(QMenu *, QTextEdit *);
    void on_queryButton_pressed();
    void on_macrosMacroButton_pressed();
    void on_deselectButton_pressed();
    void on_tableWidgetRXAll_cellClicked(int row, int col);
    void on_tableWidgetRXAll_cellDoubleClicked(int row, int col);
    QString generateCallDetail(QString selectedCall);
    void on_tableWidgetCalls_cellClicked(int row, int col);
    void on_tableWidgetCalls_cellDoubleClicked(int row, int col);
    QList<QPair<QString, int>> buildMessageFrames(QString const &text,
                                                  bool isData,
                                                  bool *pDisableTypeahead);
    bool prepareNextMessageFrame();
    bool isFreqOffsetFree(int f, int bw);
    int findFreeFreqOffset(int fmin, int fmax, int bw);
    void setDrift(int n);
    void on_tuneButton_clicked(bool);
    void acceptQSO(QDateTime const &, QString const &call, QString const &grid,
                   Frequency dial_freq, QString const &mode,
                   QString const &submode, QString const &rpt_sent,
                   QString const &rpt_received, QString const &comments,
                   QString const &name, QDateTime const &QSO_date_on,
                   QString const &operator_call, QString const &my_call,
                   QString const &my_grid, QByteArray const &ADIF,
                   QVariantMap const &additionalFields);
    void on_readFreq_clicked();
    void on_outAttenuation_valueChanged(int);
    void rigOpen();
    void handle_transceiver_update(Transceiver::TransceiverState const &);
    void handle_transceiver_failure(QString const &reason);
    void band_changed();
    void monitor(bool);
    void end_tuning();
    void stop_tuning();
    void stopTuneATU();
    void auto_tx_mode(bool);
    void on_monitorButton_toggled(bool checked);
    void on_monitorTxButton_toggled(bool checked);
    void on_tuneButton_toggled(bool checked);
    void on_spotButton_toggled(bool checked);

    void emitPTT(bool on);
    void emitTones();
    void udpNetworkMessage(Message const &message);
    void tcpNetworkMessage(Message const &message);
    void networkMessage(Message const &message);
    bool canSendNetworkMessage();
    void sendNetworkMessage(QString const &type, QString const &message);
    void sendNetworkMessage(QString const &type, QString const &message,
                            const QVariantMap &params);
    void pskReporterError(QString const &);
    void TxAgain();
    void checkVersion(bool alertOnUpToDate);
    void checkStartupWarnings();
    void clearCallsignSelected();
    void refreshTextDisplay();

    void manualBandHop(const StationList::Station station);

  private:
    Q_SIGNAL void apiSetMaxConnections(int n);
    Q_SIGNAL void apiSetServer(QString host, quint16 port);
    Q_SIGNAL void apiStartServer();
    Q_SIGNAL void apiStopServer();

    Q_SIGNAL void aprsClientEnqueueSpot(QString by_call, QString from_call,
                                        QString grid, QString comment);
    Q_SIGNAL void aprsClientEnqueueThirdParty(QString by_call,
                                              QString from_call, QString text);
    Q_SIGNAL void aprsClientSetSkipPercent(float skipPercent);
    Q_SIGNAL void aprsClientSetServer(QString host, quint16 port);
    Q_SIGNAL void aprsClientSetPaused(bool paused);
    Q_SIGNAL void aprsClientSetLocalStation(QString mycall, QString passcode);
    Q_SIGNAL void aprsClientSendReports();

    Q_SIGNAL void pskReporterSendReport(bool);
    Q_SIGNAL void pskReporterSetLocalStation(QString, QString, QString);
    Q_SIGNAL void pskReporterAddRemoteStation(QString, QString,
                                              Radio::Frequency, QString, int,
                                              QDateTime);

    Q_SIGNAL void spotClientSetLocalStation(QString, QString, QString);
    Q_SIGNAL void spotClientEnqueueCmd(QString, QString, QString, QString,
                                       QString, QString, QString, int, int, int,
                                       int);
    Q_SIGNAL void spotClientEnqueueSpot(QString, QString, int, int, int, int);

    Q_SIGNAL void decodedLineReady(QByteArray t);
    Q_SIGNAL void playNotification(const QString &name);
    Q_SIGNAL void initializeNotificationAudioOutputStream(const QAudioDevice &,
                                                          unsigned) const;
    Q_SIGNAL void initializeAudioOutputStream(QAudioDevice, unsigned channels,
                                              unsigned msBuffered) const;
    Q_SIGNAL void stopAudioOutputStream() const;
    Q_SIGNAL void startAudioInputStream(QAudioDevice const &,
                                        int framesPerBuffer, AudioDevice *sink,
                                        AudioDevice::Channel) const;
    Q_SIGNAL void suspendAudioInputStream() const;
    Q_SIGNAL void resumeAudioInputStream() const;
    Q_SIGNAL void startDetector(AudioDevice::Channel) const;
    Q_SIGNAL void FFTSize(unsigned) const;
    Q_SIGNAL void detectorClose() const;
    Q_SIGNAL void finished() const;
    Q_SIGNAL void transmitFrequency(double) const;
    Q_SIGNAL void endTransmitMessage(bool quick = false) const;
    Q_SIGNAL void tune(bool = true) const;
    Q_SIGNAL void sendMessage(double frequency, int submode, double txDelay,
                              SoundOutput *, AudioDevice::Channel) const;
    Q_SIGNAL void outAttenuationChanged(qreal) const;
    Q_SIGNAL void toggleShorthand() const;
    Q_SIGNAL void submodeChanged(Varicode::SubmodeType) const;

  private:
    QByteArray wisdomFileName() const;

    void writeAllTxt(QStringView message);
    void writeMsgTxt(QStringView message, int snr, int offset);

    void currentTextChanged();
    void tableSelectionChanged(QItemSelection const &, QItemSelection const &);
    void setupJS8();

    int freq() const { return m_freq; }

    /** Sabotage transmission if frequency would result in WSPR band. */
    void refuseToSendIn30mWSPRBand();

    void prepareSending(qint64 nowMS);

    /** Update the clock shown. */
    void updateClockUI(const QDateTime &);

    void setFreq(int);
    void transmit();

    bool presentlyWantHBReplies();

    QString m_nextFreeTextMsg;

    NetworkAccessManager m_network_manager;
    bool m_valid;
    [[maybe_unused]] bool m_multiple; // Used only in Windows builds
    MultiSettings *m_multi_settings;
    QPushButton *m_configurations_button;
    QSettings *m_settings;
    bool m_settings_read;
    QScopedPointer<Ui::MainWindow> ui;

    // other windows
    Configuration m_config;
    JS8MessageBox m_rigErrorMessageBox;

    QScopedPointer<WideGraph> m_wideGraph;
    QScopedPointer<LogQSO> m_logDlg;
    QScopedPointer<HelpTextWindow> m_shortcuts;
    QScopedPointer<HelpTextWindow> m_prefixes;
    QScopedPointer<HelpTextWindow> m_mouseCmnds;

    Transceiver::TransceiverState m_rigState;
    Frequency m_lastDialFreq;
    QString m_lastBand;

    Detector *m_detector;
    unsigned m_FFTSize;
    SoundInput *m_soundInput;
    Modulator *m_modulator;
    SoundOutput *m_soundOutput;
    NotificationAudio *m_notification;

    // Configuration might one day offer to send a txDelayChanged signal.
    // As long as it doesn't, we poll and compare with the previous value.
    double m_TxDelay; // in seconds.

    TxLoop *m_cq_loop;
    TxLoop *m_hb_loop;

    QThread m_networkThread;
    QThread m_audioThread;
    QThread m_notificationAudioThread;
    JS8::Decoder m_decoder;

    qint64 m_secBandChanged;

    Frequency m_freqNominal;
    Frequency m_freqTxNominal;

    int m_freq;

    qint32 m_XIT;
    qint32 m_sec0;
    qint32 m_RxLog;
    qint32 m_nutc0;
    // The period of the current submode, in seconds. (15 for normal, 10 for
    // fast, ...)
    qint32 m_TRperiod;
    qint32 m_inGain;
    qint32 m_idleMinutes;
    qint32 m_nSubMode;
    FrequencyList_v2::const_iterator m_frequency_list_fcal_iter;
    qint32 m_i3bit;

    bool m_btxok; // True if OK to transmit
    bool m_decoderBusy;
    QString m_decoderBusyBand;
    QMap<qint32, qint32>
        m_lastDecodeStartMap; // submode, decode k start position
    Radio::Frequency m_decoderBusyFreq;
    QDateTime m_decoderBusyStartTime;
    bool m_auto;
    bool m_restart;
    bool m_bDecoded;
    int m_currentMessageType;
    QString m_currentMessage;
    int m_currentMessageBits;
    int m_lastMessageType;
    QString m_lastMessageSent;
    bool m_tuneup;
    bool m_isTimeToSend;

    int m_ihsym;
    float m_px;
    float m_pxmax;
    float m_df3;
    quint32 m_iptt = 0;
    quint32 m_iptt0;
    bool m_btxok0;
    double m_onAirFreq0;
    bool m_first_error;

    char m_msg[100][80];

    // labels in status bar
    QLabel tx_status_label;
    QLabel config_label;
    QLabel mode_label;
    QLabel last_tx_label;
    QLabel auto_tx_label;
    QProgressBar progressBar;
    QLabel wpm_label;

    // QPointer<QProcess> proc_js8;

    QTimer m_guiTimer;
    // Timer to switch off PTT after end of transmission.
    QTimer pttReleaseTimer;
    QTimer logQSOTimer;
    QTimer tuneButtonTimer;
    QTimer tuneATU_Timer;
    QTimer TxAgainTimer;
    QTimer minuteTimer;
    QString m_baseCall;
    QString m_hisCall;
    QString m_hisGrid;
    QString m_appDir;
    QString m_palette;
    QString m_rptSent;
    QString m_rptRcvd;
    QString m_msgSent0;
    QString m_opCall;

    struct CallDetail {
        QString call;
        QString through;
        QString grid;
        int dial;
        int offset;
        QDateTime cqTimestamp;
        QDateTime ackTimestamp;
        QDateTime utcTimestamp;
        int snr;
        int bits;
        float tdrift;
        int submode;
    };

    struct CommandDetail {
        bool isCompound;
        bool isBuffered;
        QString from;
        QString to;
        QString cmd;
        int dial;
        int offset;
        QDateTime utcTimestamp;
        int snr;
        int bits;
        QString grid;
        QString text;
        QString extra;
        float tdrift;
        int submode;
        QString relayPath;
    };

    struct ActivityDetail {
        bool isLowConfidence;
        bool isCompound;
        bool isDirected;
        bool isBuffered;
        int bits;
        int dial;
        int offset;
        QString text;
        QDateTime utcTimestamp;
        int snr;
        bool shouldDisplay;
        float tdrift;
        int submode;
    };

    struct MessageBuffer {
        CommandDetail cmd;
        QQueue<CallDetail> compound;
        QList<ActivityDetail> msgs;
    };

    QString m_prevSelectedCallsign;
    int m_bandActivityWidth;
    int m_callActivityWidth;
    int m_textActivityWidth;
    int m_waterfallHeight;
    bool m_bandActivityWasVisible;
    bool m_rxDirty;
    bool m_rxDisplayDirty;
    int m_txFrameCountEstimate;
    int m_txFrameCount;
    int m_txFrameCountSent;
    QTimer m_txTextDirtyDebounce;
    bool m_txTextDirty;
    QString m_txTextDirtyLastText;
    QString m_txTextDirtyLastSelectedCall;
    QString m_lastTxMessage;
    QString m_totalTxMessage;
    QDateTime m_lastTxStartTime;
    QDateTime m_lastTxStopTime;
    qint32 m_driftMsMMA;
    qint32 m_driftMsMMA_N;

    enum Priority {
        PriorityLow = 10,
        PriorityNormal = 100,
        PriorityHigh = 1000
    };

    struct PrioritizedMessage {
        QDateTime date;
        int priority;
        QString message;
        int offset;
        Callback callback;

        friend bool operator<(PrioritizedMessage const &a,
                              PrioritizedMessage const &b) {
            if (a.priority < b.priority) {
                return true;
            }
            return a.date < b.date;
        }
    };

    struct CachedDirectedType {
        bool isAllcall;
        QDateTime date;
    };

    struct DecodeParams {
        int submode;
        int start;
        int sz;
    };

    struct FrameCacheKey {
        int submode;
        QString frame;

        FrameCacheKey(int submode, QString frame)
            : submode(submode), frame(std::move(frame)) {}

        bool operator==(FrameCacheKey const &) const noexcept = default;

        struct Hash {
            std::size_t operator()(FrameCacheKey const &key) const noexcept {
                std::size_t const h1 = std::hash<int>{}(key.submode);
                std::size_t const h2 = qHash(key.frame);
                return h1 ^ (h2 + 0x9e3779b9 + (h1 << 6) + (h1 >> 2));
            }
        };
    };

    using FrameCache =
        std::unordered_map<FrameCacheKey, QDateTime, FrameCacheKey::Hash>;
    using BandActivity = QMap<int, QList<ActivityDetail>>;

    QQueue<DecodeParams> m_decoderQueue;
    FrameCache m_messageDupeCache;  // submode, frame -> date seen
    QVariantMap m_showColumnsCache; // table column:key -> show boolean
    QVariantMap m_sortCache;        // table key -> sort by
    QPriorityQueue<PrioritizedMessage> m_txMessageQueue; // messages to be sent
    QQueue<QPair<QString, int>> m_txFrameQueue;          // frames to be sent
    QQueue<ActivityDetail> m_rxActivityQueue; // all rx activity queue
    QQueue<CommandDetail>
        m_rxCommandQueue; // command queue for processing commands
    QQueue<CallDetail>
        m_rxCallQueue; // call detail queue for spots to pskreporter
    QMap<QString, QString>
        m_compoundCallCache; // base callsign -> compound callsign
    QCache<QString, QDateTime> m_txAllcallCommandCache; // callsign -> last tx
    QCache<int, QDateTime> m_rxRecentCache;             // freq -> last rx
    QCache<int, CachedDirectedType>
        m_rxDirectedCache;                // freq -> last directed rx
    QCache<QString, int> m_rxCallCache;   // call -> last freq seen
    QMap<int, int> m_rxFrameBlockNumbers; // freq -> block
    BandActivity m_bandActivity; // freq -> [(text, last timestamp), ...]
    QMap<int, MessageBuffer> m_messageBuffer; // freq -> (cmd, [frames, ...])
    int m_lastClosedMessageBufferOffset;
    QMap<QString, CallDetail>
        m_callActivity; // call -> (last freq, last timestamp)

    QMap<int, QString> m_origRxHeaderLabelMap;           // colIndex, label
    QMap<int, QString> m_origCallActivityHeaderLabelMap; // colIndex, label
    QMap<QString, QString> m_columnLabelMap;             // full, minimal

    QMap<QString, QSet<QString>>
        m_heardGraphOutgoing; // callsign -> [stations who've this callsign has
                              // heard]
    QMap<QString, QSet<QString>>
        m_heardGraphIncoming; // callsign -> [stations who've heard this
                              // callsign]

    QMap<QString, int> m_rxInboxCountCache; // call -> count

    QMap<QString, QMap<QString, CallDetail>>
        m_callActivityBandCache; // band -> call activity
    QMap<QString, QMap<int, QList<ActivityDetail>>>
        m_bandActivityBandCache;              // band -> band activity
    QMap<QString, QString> m_rxTextBandCache; // band -> rx text
    QMap<QString, QMap<QString, QSet<QString>>>
        m_heardGraphOutgoingBandCache; // band -> heard in
    QMap<QString, QMap<QString, QSet<QString>>>
        m_heardGraphIncomingBandCache; // band -> heard out

    QMap<QString, QDateTime>
        m_callSelectedTime; // call -> timestamp when callsign was last selected
    QSet<QString> m_callSeenHeartbeat; // call
    int m_previousFreq;
    bool m_shouldRestoreFreq;
    bool m_bandHopped;
    Frequency m_bandHoppedFreq;

    /** Repeat period of HBs, in seconds. */
    int m_hbInterval;
    /** Repeat period of CQ calls, in seconds. */
    int m_cqInterval;

    /** Whether to resume HBs at the next opportunity. */
    bool m_hbPaused;

    QDateTime m_dateTimeQSOOn;
    QDateTime m_dateTimeLastTX;

    LogBook m_logBook;
    unsigned m_msAudioOutputBuffered;
    unsigned m_framesAudioInputBuffered;
    QThread::Priority m_audioThreadPriority;
    QThread::Priority m_notificationAudioThreadPriority;
    QThread::Priority m_decoderThreadPriority;
    QThread::Priority m_networkThreadPriority;
    bool m_splitMode;
    bool m_monitoring;
    bool m_generateAudioWhenPttConfirmedByTX;
    bool m_transmitting;
    bool m_tune;
    bool m_tx_watchdog; // true when watchdog triggered
    bool m_block_pwr_tooltip;
    bool m_PwrBandSetOK;
    Frequency m_lastMonitoredFrequency;
    MessageClient *m_messageClient;
    MessageServer *m_messageServer;
    WSJTXMessageClient *m_wsjtxMessageClient;
    WSJTXMessageMapper *m_wsjtxMessageMapper;
    TCPClient *m_n3fjpClient;
    PSKReporter *m_pskReporter;
    SpotClient *m_spotClient;
    APRSISClient *m_aprsClient;
    DisplayManual m_manual;
    QVariantHash m_pwrBandTxMemory; // Remembers power level by band
    QVariantHash
        m_pwrBandTuneMemory; // Remembers power level by band for tuning
    QByteArray m_geometryNoControls;

    //---------------------------------------------------- private functions
    void readSettings();
    void set_application_font(QFont const &);
    void writeSettings();
    void createStatusBar();
    void statusChanged();
    void rigFailure(QString const &reason);
    void spotSetLocal();
    void pskSetLocal();
    void aprsSetLocal();
    void spotReport(int submode, int dial, int offset, int snr,
                    QString const &callsign, QString const &grid);
    void spotCmd(CommandDetail const &cmd);
    void spotAprsCmd(CommandDetail const &cmd);
    void pskLogReport(QString const &mode, int dial, int offset, int snr,
                      QString const &callsign, QString const &grid,
                      QDateTime const &utcTimestamp);
    void spotAprsGrid(int dial, int offset, int snr, QString callsign,
                      QString grid);
    Radio::Frequency dialFrequency();
    void setSubmode(int submode);
    void updateCurrentBand();
    void displayDialFrequency();
    void transmitDisplay(bool);
    void postDecode(bool is_new, QString const &message);
    void displayTransmit();
    void updateModeButtonText();
    void updateButtonDisplay();
    void updateTextDisplay();
    void updateTextWordCheckerDisplay();
    void updateTextStatsDisplay(QString text, int count);
    void updateTxButtonDisplay();
    bool isMyCallIncluded(QString const &text);
    bool isAllCallIncluded(QString const &text);
    bool isGroupCallIncluded(const QString &text);
    QString callsignSelected(bool useInputText = false);
    void callsignSelectedChanged(QString old, QString current);
    bool isRecentOffset(int submode, int offset);
    void markOffsetRecent(int offset);
    bool isDirectedOffset(int offset, bool *pIsAllCall);
    void markOffsetDirected(int offset, bool isAllCall);
    void clearOffsetDirected(int offset);
    void processActivity(bool force = false);
    void resetTimeDeltaAverage();
    void processRxActivity();
    void processIdleActivity();
    void processCompoundActivity();
    void processBufferedActivity();
    void processCommandActivity();
    QString inboxPath();
    void refreshInboxCounts();
    bool hasMessageHistory(QString call);
    int addCommandToMyInbox(CommandDetail d);
    int addCommandToStorage(QString type, CommandDetail d);
    int getNextMessageIdForCallsign(QString callsign);
    int getLookaheadMessageIdForCallsign(QString callsign, int afterMsgId);
    int getNextGroupMessageIdForCallsign(QString group_name, QString callsign);
    int getLookaheadGroupMessageIdForCallsign(QString group_name,
                                              QString callsign, int afterMsgId);
    bool markGroupMsgDeliveredForCallsign(int msgId, QString callsign);
    bool markMsgDelivered(int mid, Message msg);
    QStringList parseRelayPathCallsigns(QString from, QString text);
    void processSpots();
    void processTxQueue();
    void displayActivity(bool force = false);
    void displayBandActivity();
    void displayCallActivity();
    void enable_DXCC_entity(bool on);
    void setRig(Frequency = 0); // zero frequency means no change
    QDateTime nextTransmitCycle();
    void statusUpdate();
    void on_the_minute();
    void tryBandHop();
    void add_child_to_event_filter(QObject *);
    void remove_child_from_event_filter(QObject *);
    void setup_status_bar();
    QString columnLabel(QString defaultLabel);

    void resetIdleTimer();
    void incrementIdleTimer();
    void tx_watchdog(bool triggered);
    void write_frequency_entry(QString const &file_name);
    void write_transmit_entry(QString const &file_name);
};

#endif // MAINWINDOW_H