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#ifndef QMPMAINWINDOW_H
#define QMPMAINWINDOW_H

#include <QMainWindow>
#include <QTimer>
#include <QCloseEvent>
#include <QMoveEvent>
#include <QDropEvent>
#include <QDragEnterEvent>
#include <QMouseEvent>
#include <QAction>
#include <QMenu>
#include <QIcon>
#include <QSlider>
#include <QPointer>
#include <QApplication>
#include <QCommandLineParser>
#include <thread>
#include <chrono>
#include <future>
#include <map>
#include <unordered_map>
#include "qmpplugin.hpp"
#include "qmpplistwindow.hpp"
#include "qmpchannelswindow.hpp"
#include "qmpefxwindow.hpp"
#include "qmpinfowindow.hpp"
#include "qmpsettingswindow.hpp"
#include "qmphelpwindow.hpp"

#define getThemedIcon(x) (qmpMainWindow::getInstance()->isDarkTheme()?QString(x).insert(QString(x).lastIndexOf('.'),"_i"):QString(x))
#define getThemedIconc(x) ((qmpMainWindow::getInstance()->isDarkTheme()?QString(x).insert(QString(x).lastIndexOf('.'),"_i"):QString(x)).toStdString().c_str())

namespace Ui
{
class qmpMainWindow;
}

class QClickableSlider : public QSlider
{
    Q_OBJECT
public:
    explicit QClickableSlider(QWidget *parent = 0) : QSlider(parent) {}
protected:
    void mouseReleaseEvent(QMouseEvent *e)
    {
        QSlider::mouseReleaseEvent(e);
        if (e->buttons()^Qt::LeftButton)
        {
            double p = e->pos().x() / (double)width();
            setValue(p * (maximum() - minimum()) + minimum());
            emit sliderReleased();
        }
    }
};

class QReflectiveAction : public QAction
{
    Q_OBJECT
private:
    std::string reflt;
signals:
    void onClick(std::string s);
public:
    explicit QReflectiveAction(const QIcon &icon, const QString &text, const std::string &ref):
        QAction(icon, text, nullptr), reflt(ref)
    {
        connect(this, &QAction::triggered, std::bind(&QReflectiveAction::onClick, this, reflt));
    }
};

class QReflectivePushButton : public QPushButton
{
    Q_OBJECT
private:
    std::string reflt;
signals:
    void onClick(std::string s);
public:
    explicit QReflectivePushButton(const QIcon &icon, const QString &text, const std::string &ref):
        QPushButton(icon, QString()), reflt(ref)
    {
        connect(this, &QPushButton::clicked, std::bind(&QReflectivePushButton::onClick, this, reflt));
        setToolTip(text);
    }
};

class qmpFuncPrivate
{
private:
    qmpFuncBaseIntf *_i = nullptr;
    QIcon _icon;
    std::string des;
    bool _checkable, checked;
    QReflectiveAction *asgna = nullptr;
    QReflectivePushButton *asgnb = nullptr;
public:
    qmpFuncPrivate() {}
    qmpFuncPrivate(qmpFuncBaseIntf *i, std::string _desc, const char *icon, int iconlen, bool checkable);
    ~qmpFuncPrivate()
    {
        asgna = nullptr;
        asgnb = nullptr;
    }
    qmpFuncBaseIntf *i()
    {
        return _i;
    }
    void setAssignedControl(QReflectiveAction *a)
    {
        asgna = a;
        if (!a)return;
        asgna->setCheckable(_checkable);
        asgna->setChecked(checked);
    }
    void setAssignedControl(QReflectivePushButton *a)
    {
        asgnb = a;
        if (!a)return;
        asgnb->setCheckable(_checkable);
        asgnb->setChecked(checked);
    }
    const QIcon &icon()
    {
        return _icon;
    }
    const std::string &desc()
    {
        return des;
    }
    bool isCheckable()
    {
        return _checkable;
    }
    bool isChecked()
    {
        return checked;
    }
    void setEnabled(bool e)
    {
        if (asgna)asgna->setEnabled(e);
        if (asgnb)asgnb->setEnabled(e);
    }
    void setChecked(bool _c)
    {
        checked = _c;
        if (asgna)asgna->setChecked(checked);
        if (asgnb)asgnb->setChecked(checked);
    }
};

class qmpRenderFunc;
class qmpPanicFunc;
class qmpReloadSynthFunc;

class qmpCallBack
{
private:
    int t;
    ICallBack *cbc;
    callback_t cbf;
public:
    qmpCallBack()
    {
        t = -1;
        cbc = nullptr;
        cbf = nullptr;
    }
    qmpCallBack(ICallBack *_cb)
    {
        t = 0;
        cbc = _cb;
        cbf = nullptr;
    }
    qmpCallBack(callback_t _cb)
    {
        t = 1;
        cbf = _cb;
        cbc = nullptr;
    }
    void operator()(void *cbd, void *usrd)
    {
        if (t < 0)return;
        if (t)cbf(cbd, usrd);
        else cbc->callBack(cbd, usrd);
    }
};

class IFluidSettings;
class qmpMidiOutFluid;
class qmpFileRendererFluid;
class CMidiPlayer;

class qmpMainWindow: public QMainWindow
{
    Q_OBJECT

public:
    explicit qmpMainWindow(QCommandLineParser *clp, QWidget *parent = nullptr);
    void init();
    void closeEvent(QCloseEvent *event);
    void dropEvent(QDropEvent *event);
    void dragEnterEvent(QDragEnterEvent *event);
    ~qmpMainWindow();
    CMidiPlayer *getPlayer()
    {
        return player;
    }
    qmpMidiOutFluid *getFluid()
    {
        return internalfluid;
    }
    qmpSettings *getSettings()
    {
        return settings.get();
    }
    QTimer *getTimer()
    {
        return timer;
    }
    bool isFinalizing()
    {
        return fin;
    }
    QString getFileName();
    QUrl getFilePath();
    void switchTrack(QString s, bool interrupt = true);
    std::string getTitle();
    std::wstring getWTitle();
    uint32_t getPlaybackPercentage();
    void playerSeek(uint32_t percentage);
    PlaybackStatus getPlaybackStatus();
    int parseArgs();
    bool startedWithFiles();
    void registerFunctionality(qmpFuncBaseIntf *i, std::string name, std::string desc, const char *icon, int iconlen, bool checkable);
    void unregisterFunctionality(std::string name);
    int registerUIHook(std::string e, ICallBack *callback, void *userdat);
    int registerUIHook(std::string e, callback_t callback, void *userdat);
    void unregisterUIHook(std::string e, int hook);
    void setFuncState(std::string name, bool state);
    void setFuncEnabled(std::string name, bool enable);
    bool isDarkTheme();
    void startRender();
    void reloadSynth();
    void setupWidget();
    void invokeCallback(std::string cat, void *callerdat);
    std::map<std::string, qmpFuncPrivate> &getFunc();
    void setPaused(bool paused);
    void nextTrack();
    void prevTrack();
    void stop();

private slots:
    void on_pbPlayPause_clicked();
    void updateWidgets();
    void on_hsTimer_sliderPressed();
    void on_hsTimer_sliderReleased();
    void on_vsMasterVol_valueChanged();
    void on_pbStop_clicked();
    void on_pbPrev_clicked();
    void on_pbNext_clicked();
    void on_lbFileName_customContextMenuRequested(const QPoint &pos);
    void on_pbSettings_clicked();
    void funcReflector(std::string reflt);
    void on_pushButton_clicked();
    void on_pbAdd_clicked();

public slots:
    void dialogClosed();
    void selectionChanged();

private:
    Ui::qmpMainWindow *ui;
    QTimer *timer;
    bool playing, stopped, dragging, fin;
    std::thread *playerTh = nullptr;
    std::thread *renderTh = nullptr;
    std::chrono::steady_clock::time_point st;
    double offset;
    CMidiPlayer *player;
    QUrl filepath;
    qmpMidiOutFluid *internalfluid;
    qmpFileRendererFluid *fluidrenderer;
    qmpPluginManager *pmgr;
    QPointer<qmpPlistWindow> plistw;
    QPointer<qmpChannelsWindow> chnlw;
    QPointer<qmpEfxWindow> efxw;
    QPointer<qmpInfoWindow> infow;
    QPointer<qmpHelpWindow> helpw;
    std::unique_ptr<qmpSettings> settings;
    QPointer<qmpSettingsWindow> settingsw;
    std::map<std::string, qmpFuncPrivate> mfunc;
    std::unordered_map<std::string, std::map<int, std::pair<qmpCallBack, void *>>> muicb;
    qmpRenderFunc *renderf;
    qmpPanicFunc *panicf;
    qmpReloadSynthFunc *reloadsynf;
    std::vector<std::string> enabled_buttons, enabled_actions;
    std::vector<QString> argfiles;
    QCommandLineParser *clp;

    void onfnChanged();
    void playerSetup(IFluidSettings *fs);
    void loadSoundFont(IFluidSettings *fs);
    int loadFile(QString fns);
    void registerMidiOptions();
    void registerBehaviorOptions();

private:
    static qmpMainWindow *ref;
public:
    static qmpMainWindow *getInstance()
    {
        return ref;
    }
};

class qmpRenderFunc: public qmpFuncBaseIntf
{
private:
    qmpMainWindow *p;
public:
    qmpRenderFunc(qmpMainWindow *par)
    {
        p = par;
    }
    void show()
    {
        p->startRender();
    }
    void close() {}
};
class qmpPanicFunc: public qmpFuncBaseIntf
{
private:
    qmpMainWindow *p;
public:
    qmpPanicFunc(qmpMainWindow *par)
    {
        p = par;
    }
    void show()
    {
        p->getPlayer()->playerPanic();
    }
    void close() {}
};
class qmpReloadSynthFunc: public qmpFuncBaseIntf
{
private:
    qmpMainWindow *p;
public:
    qmpReloadSynthFunc(qmpMainWindow *par)
    {
        p = par;
    }
    void show()
    {
        p->reloadSynth();
    }
    void close() {}
};

#endif // QMPMAINWINDOW_H