/***
  This file is part of pavucontrol.

  Copyright 2006-2008 Lennart Poettering
  Copyright 2009 Colin Guthrie

  pavucontrol is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 2 of the License, or
  (at your option) any later version.

  pavucontrol is distributed in the hope that it will be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with pavucontrol. If not, see <https://www.gnu.org/licenses/>.
***/

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <QDebug>
#include <set>

#include "mainwindow.h"
#include "cardwidget.h"
#include "sinkwidget.h"
#include "sourcewidget.h"
#include "sinkinputwidget.h"
#include "sourceoutputwidget.h"
#include "rolewidget.h"
#include <QIcon>
#include <QStyle>
#include <QSettings>

struct sink_port_prio_compare {
    bool operator() (const pa_sink_port_info& lhs, const pa_sink_port_info& rhs) const {

        if (lhs.priority == rhs.priority)
            return strcmp(lhs.name, rhs.name) > 0;

        return lhs.priority > rhs.priority;
    }
};

struct source_port_prio_compare {
    bool operator() (const pa_source_port_info& lhs, const pa_source_port_info& rhs) const {

        if (lhs.priority == rhs.priority)
            return strcmp(lhs.name, rhs.name) > 0;

        return lhs.priority > rhs.priority;
    }
};

MainWindow::MainWindow():
    QDialog(),
    showSinkInputType(SINK_INPUT_CLIENT),
    showSinkType(SINK_ALL),
    showSourceOutputType(SOURCE_OUTPUT_CLIENT),
    showSourceType(SOURCE_NO_MONITOR),
    eventRoleWidget(nullptr),
    canRenameDevices(false),
    m_connected(false),
    m_config_filename(nullptr) {

    setupUi(this);

    sinkInputTypeComboBox->setCurrentIndex((int) showSinkInputType);
    sourceOutputTypeComboBox->setCurrentIndex((int) showSourceOutputType);
    sinkTypeComboBox->setCurrentIndex((int) showSinkType);
    sourceTypeComboBox->setCurrentIndex((int) showSourceType);

    connect(sinkInputTypeComboBox, static_cast<void(QComboBox::*)(int)>(&QComboBox::currentIndexChanged), this, &MainWindow::onSinkInputTypeComboBoxChanged);
    connect(sourceOutputTypeComboBox, static_cast<void(QComboBox::*)(int)>(&QComboBox::currentIndexChanged), this, &MainWindow::onSourceOutputTypeComboBoxChanged);
    connect(sinkTypeComboBox, static_cast<void(QComboBox::*)(int)>(&QComboBox::currentIndexChanged), this, &MainWindow::onSinkTypeComboBoxChanged);
    connect(sourceTypeComboBox, static_cast<void(QComboBox::*)(int)>(&QComboBox::currentIndexChanged), this, &MainWindow::onSourceTypeComboBoxChanged);
    connect(showVolumeMetersCheckButton, &QCheckBox::toggled, this, &MainWindow::onShowVolumeMetersCheckButtonToggled);

    QAction * quit = new QAction{this};
    connect(quit, &QAction::triggered, this, &QWidget::close);
    quit->setShortcut(QKeySequence::Quit);
    addAction(quit);

    const QSettings config;

    showVolumeMetersCheckButton->setChecked(config.value(QStringLiteral("window/showVolumeMeters"), true).toBool());

    const QSize last_size  = config.value(QStringLiteral("window/size")).toSize();
    if (last_size.isValid())
        resize(last_size);

    const QVariant sinkInputTypeSelection = config.value(QStringLiteral("window/sinkInputType"));
    if (sinkInputTypeSelection.isValid())
        sinkInputTypeComboBox->setCurrentIndex(sinkInputTypeSelection.toInt());

    const QVariant sourceOutputTypeSelection = config.value(QStringLiteral("window/sourceOutputType"));
    if (sourceOutputTypeSelection.isValid())
        sourceOutputTypeComboBox->setCurrentIndex(sourceOutputTypeSelection.toInt());

    const QVariant sinkTypeSelection = config.value(QStringLiteral("window/sinkType"));
    if (sinkTypeSelection.isValid())
        sinkTypeComboBox->setCurrentIndex(sinkTypeSelection.toInt());

    const QVariant sourceTypeSelection = config.value(QStringLiteral("window/sourceType"));
    if (sourceTypeSelection.isValid())
        sourceTypeComboBox->setCurrentIndex(sourceTypeSelection.toInt());

    /* Hide first and show when we're connected */
    notebook->hide();
    connectingLabel->show();
}

MainWindow::~MainWindow() {
    QSettings config;
    config.setValue(QStringLiteral("window/size"), size());
    config.setValue(QStringLiteral("window/sinkInputType"), sinkInputTypeComboBox->currentIndex());
    config.setValue(QStringLiteral("window/sourceOutputType"), sourceOutputTypeComboBox->currentIndex());
    config.setValue(QStringLiteral("window/sinkType"), sinkTypeComboBox->currentIndex());
    config.setValue(QStringLiteral("window/sourceType"), sourceTypeComboBox->currentIndex());
    config.setValue(QStringLiteral("window/showVolumeMeters"), showVolumeMetersCheckButton->isChecked());

    while (!clientNames.empty()) {
        auto i = clientNames.begin();
        g_free(i->second);
        clientNames.erase(i);
    }
}

class DeviceWidget;
static void updatePorts(DeviceWidget *w, std::map<QByteArray, PortInfo> &ports) {
    std::map<QByteArray, PortInfo>::iterator it;
    PortInfo p;

    for (auto & port : w->ports) {
        QByteArray desc;
        it = ports.find(port.first);

        if (it == ports.end())
            continue;

        p = it->second;
        desc = p.description;

        if (p.available == PA_PORT_AVAILABLE_YES)
            desc +=  MainWindow::tr(" (plugged in)").toUtf8().constData();
        else if (p.available == PA_PORT_AVAILABLE_NO) {
            if (p.name == "analog-output-speaker" ||
                p.name == "analog-input-microphone-internal")
                desc += MainWindow::tr(" (unavailable)").toUtf8().constData();
            else
                desc += MainWindow::tr(" (unplugged)").toUtf8().constData();
        }

        port.second = desc;
    }

    it = ports.find(w->activePort);

    if (it != ports.end()) {
        p = it->second;
        w->setLatencyOffset(p.latency_offset);
    }
}

static void setIconByName(QLabel* label, const char* name, const char* fallback_name = nullptr) {
    QIcon icon = QIcon::fromTheme(QString::fromLatin1(name));
    if (icon.isNull() || icon.availableSizes().isEmpty())
        icon = QIcon::fromTheme(QString::fromLatin1(fallback_name));
    int size = label->style()->pixelMetric(QStyle::PM_ToolBarIconSize);
    QPixmap pix = icon.pixmap(size, size);
    label->setPixmap(pix);
}

void MainWindow::updateCard(const pa_card_info &info) {
    CardWidget *w;
    bool is_new = false;
    const char *description, *icon;
    std::set<pa_card_profile_info2 *, profile_prio_compare> profile_priorities;

    if (cardWidgets.count(info.index))
        w = cardWidgets[info.index];
    else {
        cardWidgets[info.index] = w = new CardWidget(this);
        cardsVBox->layout()->addWidget(w);
        w->index = info.index;
        is_new = true;
    }

    w->updating = true;

    description = pa_proplist_gets(info.proplist, PA_PROP_DEVICE_DESCRIPTION);
    w->name = description ? description : info.name;
    w->nameLabel->setText(QString::fromUtf8(w->name));

    icon = pa_proplist_gets(info.proplist, PA_PROP_DEVICE_ICON_NAME);
    setIconByName(w->iconImage, icon, "audio-card");

    w->hasSinks = w->hasSources = false;

    profile_priorities.clear();
    for (pa_card_profile_info2 ** p_profile = info.profiles2; p_profile && *p_profile != nullptr; ++p_profile) {
        w->hasSinks = w->hasSinks || ((*p_profile)->n_sinks > 0);
        w->hasSources = w->hasSources || ((*p_profile)->n_sources > 0);
        profile_priorities.insert(*p_profile);
    }

    populatePorts(info, w->ports);

    groupProfiles(profile_priorities, w->ports, w->profiles);

    w->activeProfile = info.active_profile ? info.active_profile->name : "";

    /* Because the port info for sinks and sources is discontinued we need
     * to update the port info for them here. */
    if (w->hasSinks) {
        std::map<uint32_t, SinkWidget*>::iterator it;

        for (it = sinkWidgets.begin() ; it != sinkWidgets.end(); it++) {
            SinkWidget *sw = it->second;

            if (sw->card_index == w->index) {
                sw->updating = true;
                updatePorts(sw, w->ports);
                sw->updating = false;
            }
        }
    }

    if (w->hasSources) {
        std::map<uint32_t, SourceWidget*>::iterator it;

        for (it = sourceWidgets.begin() ; it != sourceWidgets.end(); it++) {
            SourceWidget *sw = it->second;

            if (sw->card_index == w->index) {
                sw->updating = true;
                updatePorts(sw, w->ports);
                sw->updating = false;
            }
        }
    }
    w->prepareMenu();

    if (is_new)
        updateDeviceVisibility();

    w->updating = false;
}

bool MainWindow::updateSink(const pa_sink_info &info) {
    SinkWidget *w;
    bool is_new = false;

    const char *icon;
    std::map<uint32_t, CardWidget*>::iterator cw;
    std::set<pa_sink_port_info,sink_port_prio_compare> port_priorities;

    if (sinkWidgets.count(info.index))
        w = sinkWidgets[info.index];
    else {
        sinkWidgets[info.index] = w = new SinkWidget(this);
        w->setChannelMap(info.channel_map, !!(info.flags & PA_SINK_DECIBEL_VOLUME));
        sinksVBox->layout()->addWidget(w);
        w->index = info.index;
        w->monitor_index = info.monitor_source;
        is_new = true;

        w->setBaseVolume(info.base_volume);
        w->setVolumeMeterVisible(showVolumeMetersCheckButton->isChecked());
    }

    w->updating = true;

    w->card_index = info.card;
    w->name = info.name;
    w->description = info.description;
    w->type = info.flags & PA_SINK_HARDWARE ? SINK_HARDWARE : SINK_VIRTUAL;

    w->boldNameLabel->setText(QLatin1String(""));
    gchar *txt = g_markup_printf_escaped("%s", info.description);
    w->nameLabel->setText(QString::fromUtf8(static_cast<char*>(txt)));
    w->nameLabel->setToolTip(QString::fromUtf8(info.description));
    g_free(txt);

    icon = pa_proplist_gets(info.proplist, PA_PROP_DEVICE_ICON_NAME);
    setIconByName(w->iconImage, icon, "audio-card");

    w->setVolume(info.volume);
    w->muteToggleButton->setChecked(info.mute);

    w->setDefault(w->name == defaultSinkName);

    port_priorities.clear();
    for (uint32_t i=0; i<info.n_ports; ++i) {
        port_priorities.insert(*info.ports[i]);
    }

    w->ports.clear();
    for (const auto & port_prioritie : port_priorities)
        w->ports.push_back(std::pair<QByteArray,QByteArray>(port_prioritie.name, port_prioritie.description));

    w->activePort = info.active_port ? info.active_port->name : "";

    cw = cardWidgets.find(info.card);

    if (cw != cardWidgets.end())
        updatePorts(w, cw->second->ports);

#ifdef PA_SINK_SET_FORMATS
    w->setDigital(info.flags & PA_SINK_SET_FORMATS);
#endif

    w->prepareMenu();

    w->updating = false;
    if (is_new)
        updateDeviceVisibility();

    return is_new;
}

static void suspended_callback(pa_stream *s, void *userdata) {
    MainWindow *w = static_cast<MainWindow*>(userdata);

    if (pa_stream_is_suspended(s))
        w->updateVolumeMeter(pa_stream_get_device_index(s), PA_INVALID_INDEX, -1);
}

static void read_callback(pa_stream *s, size_t length, void *userdata) {
    MainWindow *w = static_cast<MainWindow*>(userdata);
    const void *data;
    double v;

    if (pa_stream_peek(s, &data, &length) < 0) {
        show_error(MainWindow::tr("Failed to read data from stream").toUtf8().constData());
        return;
    }

    if (!data) {
        /* nullptr data means either a hole or empty buffer.
         * Only drop the stream when there is a hole (length > 0) */
        if (length)
            pa_stream_drop(s);
        return;
    }

    assert(length > 0);
    assert(length % sizeof(float) == 0);

    v = ((const float*) data)[length / sizeof(float) -1];

    pa_stream_drop(s);

    if (v < 0)
        v = 0;
    if (v > 1)
        v = 1;

    w->updateVolumeMeter(pa_stream_get_device_index(s), pa_stream_get_monitor_stream(s), v);
}

pa_stream* MainWindow::createMonitorStreamForSource(uint32_t source_idx, uint32_t stream_idx = -1, bool suspend = false) {
    pa_stream *s;
    char t[16];
    pa_buffer_attr attr;
    pa_sample_spec ss;
    pa_stream_flags_t flags;

    ss.channels = 1;
    ss.format = PA_SAMPLE_FLOAT32;
    ss.rate = 25;

    memset(&attr, 0, sizeof(attr));
    attr.fragsize = sizeof(float);
    attr.maxlength = (uint32_t) -1;

    snprintf(t, sizeof(t), "%u", source_idx);

    if (!(s = pa_stream_new(get_context(), tr("Peak detect").toUtf8().constData(), &ss, nullptr))) {
        show_error(tr("Failed to create monitoring stream").toUtf8().constData());
        return nullptr;
    }

    if (stream_idx != (uint32_t) -1)
        pa_stream_set_monitor_stream(s, stream_idx);

    pa_stream_set_read_callback(s, read_callback, this);
    pa_stream_set_suspended_callback(s, suspended_callback, this);

    flags = (pa_stream_flags_t) (PA_STREAM_DONT_MOVE | PA_STREAM_PEAK_DETECT | PA_STREAM_ADJUST_LATENCY |
                                 (suspend ? PA_STREAM_DONT_INHIBIT_AUTO_SUSPEND : PA_STREAM_NOFLAGS) |
                                 (!showVolumeMetersCheckButton->isChecked() ? PA_STREAM_START_CORKED : PA_STREAM_NOFLAGS));

    if (pa_stream_connect_record(s, t, &attr, flags) < 0) {
        show_error(tr("Failed to connect monitoring stream").toUtf8().constData());
        pa_stream_unref(s);
        return nullptr;
    }
    return s;
}

void MainWindow::createMonitorStreamForSinkInput(SinkInputWidget* w, uint32_t sink_idx) {
    if (!sinkWidgets.count(sink_idx))
        return;

    if (w->peak) {
        pa_stream_disconnect(w->peak);
        w->peak = nullptr;
    }

    w->peak = createMonitorStreamForSource(sinkWidgets[sink_idx]->monitor_index, w->index);
}

void MainWindow::updateSource(const pa_source_info &info) {
    SourceWidget *w;
    bool is_new = false;
    const char *icon;
    std::map<uint32_t, CardWidget*>::iterator cw;
    std::set<pa_source_port_info,source_port_prio_compare> port_priorities;

    if (sourceWidgets.count(info.index))
        w = sourceWidgets[info.index];
    else {
        sourceWidgets[info.index] = w = new SourceWidget(this);
        w->setChannelMap(info.channel_map, !!(info.flags & PA_SOURCE_DECIBEL_VOLUME));
        sourcesVBox->layout()->addWidget(w);

        w->index = info.index;
        is_new = true;

        w->setBaseVolume(info.base_volume);
        w->setVolumeMeterVisible(showVolumeMetersCheckButton->isChecked());

        if (pa_context_get_server_protocol_version(get_context()) >= 13)
            w->peak = createMonitorStreamForSource(info.index, -1, !!(info.flags & PA_SOURCE_NETWORK));
    }

    w->updating = true;

    w->card_index = info.card;
    w->name = info.name;
    w->description = info.description;
    w->type = info.monitor_of_sink != PA_INVALID_INDEX ? SOURCE_MONITOR : (info.flags & PA_SOURCE_HARDWARE ? SOURCE_HARDWARE : SOURCE_VIRTUAL);

    w->boldNameLabel->setText(QLatin1String(""));
    gchar *txt = g_markup_printf_escaped("%s", info.description);
    w->nameLabel->setText(QString::fromUtf8(static_cast<char*>(txt)));
    w->nameLabel->setToolTip(QString::fromUtf8(info.description));
    g_free(txt);

    icon = pa_proplist_gets(info.proplist, PA_PROP_DEVICE_ICON_NAME);
    setIconByName(w->iconImage, icon, "audio-input-microphone");

    w->setVolume(info.volume);
    w->muteToggleButton->setChecked(info.mute);

    w->setDefault(w->name == defaultSourceName);

    port_priorities.clear();
    for (uint32_t i=0; i<info.n_ports; ++i) {
        port_priorities.insert(*info.ports[i]);
    }


    w->ports.clear();
    for (const auto & port_prioritie : port_priorities)
        w->ports.push_back(std::pair<QByteArray,QByteArray>(port_prioritie.name, port_prioritie.description));

    w->activePort = info.active_port ? info.active_port->name : "";

    cw = cardWidgets.find(info.card);

    if (cw != cardWidgets.end())
        updatePorts(w, cw->second->ports);

    w->prepareMenu();

    w->updating = false;

    if (is_new)
        updateDeviceVisibility();
}


void MainWindow::setIconFromProplist(QLabel *icon, pa_proplist *l, const char *def) {
    const char *t;

    if ((t = pa_proplist_gets(l, PA_PROP_MEDIA_ICON_NAME)))
        goto finish;

    if ((t = pa_proplist_gets(l, PA_PROP_WINDOW_ICON_NAME)))
        goto finish;

    if ((t = pa_proplist_gets(l, PA_PROP_APPLICATION_ICON_NAME)))
        goto finish;

    if ((t = pa_proplist_gets(l, PA_PROP_MEDIA_ROLE))) {

        if (strcmp(t, "video") == 0 ||
            strcmp(t, "phone") == 0)
            goto finish;

        if (strcmp(t, "music") == 0) {
            t = "audio";
            goto finish;
        }

        if (strcmp(t, "game") == 0) {
            t = "applications-games";
            goto finish;
        }

        if (strcmp(t, "event") == 0) {
            t = "dialog-information";
            goto finish;
        }
    }

    t = def;

finish:

    setIconByName(icon, t, def);
}


void MainWindow::updateSinkInput(const pa_sink_input_info &info) {
    const char *t;
    SinkInputWidget *w;
    bool is_new = false;

    if ((t = pa_proplist_gets(info.proplist, "module-stream-restore.id"))) {
        if (strcmp(t, "sink-input-by-media-role:event") == 0) {
            g_debug("%s", tr("Ignoring sink-input due to it being designated as an event and thus handled by the Event widget").toUtf8().constData());
            return;
        }
    }

    if (sinkInputWidgets.count(info.index)) {
        w = sinkInputWidgets[info.index];
        if (pa_context_get_server_protocol_version(get_context()) >= 13)
            if (w->sinkIndex() != info.sink)
                createMonitorStreamForSinkInput(w, info.sink);
    } else {
        sinkInputWidgets[info.index] = w = new SinkInputWidget(this);
        w->setChannelMap(info.channel_map, true);
        streamsVBox->layout()->addWidget(w);

        w->index = info.index;
        w->clientIndex = info.client;
        is_new = true;
        w->setVolumeMeterVisible(showVolumeMetersCheckButton->isChecked());

        if (pa_context_get_server_protocol_version(get_context()) >= 13)
            createMonitorStreamForSinkInput(w, info.sink);
    }

    w->updating = true;

    w->type = info.client != PA_INVALID_INDEX ? SINK_INPUT_CLIENT : SINK_INPUT_VIRTUAL;

    w->setSinkIndex(info.sink);

    char *txt;
    if (clientNames.count(info.client)) {
        w->boldNameLabel->setText(QString::fromUtf8(txt = g_markup_printf_escaped("<b>%s</b>", clientNames[info.client])));
        g_free(txt);
        w->nameLabel->setText(QString::fromUtf8(txt = g_markup_printf_escaped(": %s", info.name)));
        g_free(txt);
    } else {
        w->boldNameLabel->setText(QLatin1String(""));
        w->nameLabel->setText(QString::fromUtf8(info.name));
    }

    w->nameLabel->setToolTip(QString::fromUtf8(info.name));

    setIconFromProplist(w->iconImage, info.proplist, "audio-card");

    w->setVolume(info.volume);
    w->muteToggleButton->setChecked(info.mute);

    w->updating = false;

    if (is_new)
        updateDeviceVisibility();
}

void MainWindow::updateSourceOutput(const pa_source_output_info &info) {
    SourceOutputWidget *w;
    const char *app;
    bool is_new = false;

    if ((app = pa_proplist_gets(info.proplist, PA_PROP_APPLICATION_ID)))
        if (strcmp(app, "org.PulseAudio.pavucontrol") == 0
            || strcmp(app, "org.gnome.VolumeControl") == 0
            || strcmp(app, "org.kde.kmixd") == 0)
            return;

    if (sourceOutputWidgets.count(info.index))
        w = sourceOutputWidgets[info.index];
    else {
        sourceOutputWidgets[info.index] = w = new SourceOutputWidget(this);
#if HAVE_SOURCE_OUTPUT_VOLUMES
        w->setChannelMap(info.channel_map, true);
#endif
        recsVBox->layout()->addWidget(w);

        w->index = info.index;
        w->clientIndex = info.client;
        is_new = true;
        w->setVolumeMeterVisible(showVolumeMetersCheckButton->isChecked());
    }

    w->updating = true;

    w->type = info.client != PA_INVALID_INDEX ? SOURCE_OUTPUT_CLIENT : SOURCE_OUTPUT_VIRTUAL;

    w->setSourceIndex(info.source);

    char *txt;
    if (clientNames.count(info.client)) {
        w->boldNameLabel->setText(QString::fromUtf8(txt = g_markup_printf_escaped("<b>%s</b>", clientNames[info.client])));
        g_free(txt);
        w->nameLabel->setText(QString::fromUtf8(txt = g_markup_printf_escaped(": %s", info.name)));
        g_free(txt);
    } else {
        w->boldNameLabel->setText(QLatin1String(""));
        w->nameLabel->setText(QString::fromUtf8(info.name));
    }

    w->nameLabel->setToolTip(QString::fromUtf8(info.name));

    setIconFromProplist(w->iconImage, info.proplist, "audio-input-microphone");

#if HAVE_SOURCE_OUTPUT_VOLUMES
    w->setVolume(info.volume);
    w->muteToggleButton->setChecked(info.mute);
#endif

    w->updating = false;

    if (is_new)
        updateDeviceVisibility();
}

void MainWindow::updateClient(const pa_client_info &info) {
    g_free(clientNames[info.index]);
    clientNames[info.index] = g_strdup(info.name);

    for (auto & sinkInputWidget : sinkInputWidgets) {
        SinkInputWidget *w = sinkInputWidget.second;

        if (!w)
            continue;

        if (w->clientIndex == info.index) {
            gchar *txt;
            w->boldNameLabel->setText(QString::fromUtf8(txt = g_markup_printf_escaped("<b>%s</b>", info.name)));
            g_free(txt);
        }
    }
}

void MainWindow::updateServer(const pa_server_info &info) {
    defaultSourceName = info.default_source_name ? info.default_source_name : "";
    defaultSinkName = info.default_sink_name ? info.default_sink_name : "";

    for (auto & sinkWidget : sinkWidgets) {
        SinkWidget *w = sinkWidget.second;

        if (!w)
            continue;

        w->updating = true;
        w->setDefault(w->name == defaultSinkName);

        w->updating = false;
    }

    for (auto & sourceWidget : sourceWidgets) {
        SourceWidget *w = sourceWidget.second;

        if (!w)
            continue;

        w->updating = true;
        w->setDefault(w->name == defaultSourceName);
        w->updating = false;
    }
}

bool MainWindow::createEventRoleWidget() {
    if (eventRoleWidget)
        return false;

    pa_channel_map cm = {
        1, { PA_CHANNEL_POSITION_MONO }
    };

    eventRoleWidget = new RoleWidget(this);
    streamsVBox->layout()->addWidget(eventRoleWidget);
    eventRoleWidget->role = "sink-input-by-media-role:event";
    eventRoleWidget->setChannelMap(cm, true);

    eventRoleWidget->boldNameLabel->setText(QLatin1String(""));
    eventRoleWidget->nameLabel->setText(tr("System Sounds"));

    setIconByName(eventRoleWidget->iconImage, "multimedia-volume-control");

    eventRoleWidget->device = "";

    eventRoleWidget->updating = true;

    pa_cvolume volume;
    volume.channels = 1;
    volume.values[0] = PA_VOLUME_NORM;

    eventRoleWidget->setVolume(volume);
    eventRoleWidget->muteToggleButton->setChecked(false);

    eventRoleWidget->updating = false;
    return TRUE;
}

void MainWindow::deleteEventRoleWidget() {
    delete eventRoleWidget;
    eventRoleWidget = nullptr;
}

void MainWindow::updateRole(const pa_ext_stream_restore_info &info) {
    pa_cvolume volume;
    bool is_new = false;

    if (strcmp(info.name, "sink-input-by-media-role:event") != 0)
        return;

    is_new = createEventRoleWidget();

    eventRoleWidget->updating = true;

    eventRoleWidget->device = info.device ? info.device : "";

    volume.channels = 1;
    volume.values[0] = pa_cvolume_max(&info.volume);

    eventRoleWidget->setVolume(volume);
    eventRoleWidget->muteToggleButton->setChecked(info.mute);

    eventRoleWidget->updating = false;

    if (is_new)
        updateDeviceVisibility();
}

#if HAVE_EXT_DEVICE_RESTORE_API
void MainWindow::updateDeviceInfo(const pa_ext_device_restore_info &info) {
    if (sinkWidgets.count(info.index)) {
        SinkWidget *w;
        pa_format_info *format;

        w = sinkWidgets[info.index];

        w->updating = true;

        /* Unselect everything */
        for (int j = 1; j < PAVU_NUM_ENCODINGS; ++j)
            w->encodings[j].widget->setChecked(false);


        for (uint8_t i = 0; i < info.n_formats; ++i) {
            format = info.formats[i];
            for (int j = 1; j < PAVU_NUM_ENCODINGS; ++j) {
                if (format->encoding == w->encodings[j].encoding) {
                    w->encodings[j].widget->setChecked(true);
                    break;
                }
            }
        }

        w->updating = false;
    }
}
#endif


void MainWindow::updateVolumeMeter(uint32_t source_index, uint32_t sink_input_idx, double v) {
    if (sink_input_idx != PA_INVALID_INDEX) {
        SinkInputWidget *w;

        if (sinkInputWidgets.count(sink_input_idx)) {
            w = sinkInputWidgets[sink_input_idx];
            w->updatePeak(v);
        }

    } else {

        for (auto & sinkWidget : sinkWidgets) {
            SinkWidget* w = sinkWidget.second;

            if (w->monitor_index == source_index)
                w->updatePeak(v);
        }

        for (auto & sourceWidget : sourceWidgets) {
            SourceWidget* w = sourceWidget.second;

            if (w->index == source_index)
                w->updatePeak(v);
        }

        for (auto & sourceOutputWidget : sourceOutputWidgets) {
            SourceOutputWidget* w = sourceOutputWidget.second;

            if (w->sourceIndex() == source_index)
                w->updatePeak(v);
        }
    }
}

static guint idle_source = 0;

gboolean idle_cb(gpointer data) {
    ((MainWindow*) data)->reallyUpdateDeviceVisibility();
    idle_source = 0;
    return FALSE;
}

void MainWindow::setConnectionState(gboolean connected) {
    if (m_connected != connected) {
        m_connected = connected;
        if (m_connected) {
            connectingLabel->hide();
            notebook->show();
        } else {
            notebook->hide();
            connectingLabel->show();
        }
    }
}

void MainWindow::updateDeviceVisibility() {

    if (idle_source)
        return;

    idle_source = g_idle_add(idle_cb, this);
}

void MainWindow::reallyUpdateDeviceVisibility() {
    bool is_empty = true;

    for (auto & sinkInputWidget : sinkInputWidgets) {
        SinkInputWidget* w = sinkInputWidget.second;

        if (sinkWidgets.size() > 1) {
            w->directionLabel->show();
            w->deviceButton->show();
        } else {
            w->directionLabel->hide();
            w->deviceButton->hide();
        }

        if (showSinkInputType == SINK_INPUT_ALL || w->type == showSinkInputType) {
            w->show();
            is_empty = false;
        } else
            w->hide();
    }

    if (eventRoleWidget)
        is_empty = false;

    if (is_empty)
        noStreamsLabel->show();
    else
        noStreamsLabel->hide();

    is_empty = true;

    for (auto & sourceOutputWidget : sourceOutputWidgets) {
        SourceOutputWidget* w = sourceOutputWidget.second;

        if (sourceWidgets.size() > 1) {
            w->directionLabel->show();
            w->deviceButton->show();
        } else {
            w->directionLabel->hide();
            w->deviceButton->hide();
        }

        if (showSourceOutputType == SOURCE_OUTPUT_ALL || w->type == showSourceOutputType) {
            w->show();
            is_empty = false;
        } else
            w->hide();
    }

    if (is_empty)
        noRecsLabel->show();
    else
        noRecsLabel->hide();

    is_empty = true;

    for (auto & sinkWidget : sinkWidgets) {
        SinkWidget* w = sinkWidget.second;

        if (showSinkType == SINK_ALL || w->type == showSinkType) {
            w->show();
            is_empty = false;
        } else
            w->hide();
    }

    if (is_empty)
        noSinksLabel->show();
    else
        noSinksLabel->hide();

    is_empty = true;

    for (auto & cardWidget : cardWidgets) {
        CardWidget* w = cardWidget.second;

        w->show();
        is_empty = false;
    }

    if (is_empty)
        noCardsLabel->show();
    else
        noCardsLabel->hide();

    is_empty = true;

    for (auto & sourceWidget : sourceWidgets) {
        SourceWidget* w = sourceWidget.second;

        if (showSourceType == SOURCE_ALL ||
            w->type == showSourceType ||
            (showSourceType == SOURCE_NO_MONITOR && w->type != SOURCE_MONITOR)) {
            w->show();
            is_empty = false;
        } else
            w->hide();
    }

    if (is_empty)
        noSourcesLabel->show();
    else
        noSourcesLabel->hide();

    /* Hmm, if I don't call hide()/show() here some widgets will never
     * get their proper space allocated */
    sinksVBox->hide();
    sinksVBox->show();
    sourcesVBox->hide();
    sourcesVBox->show();
    streamsVBox->hide();
    streamsVBox->show();
    recsVBox->hide();
    recsVBox->show();
    cardsVBox->hide();
    cardsVBox->show();
}

void MainWindow::removeCard(uint32_t index) {
    if (!cardWidgets.count(index))
        return;

    delete cardWidgets[index];
    cardWidgets.erase(index);
    updateDeviceVisibility();
}

void MainWindow::removeSink(uint32_t index) {
    if (!sinkWidgets.count(index))
        return;

    delete sinkWidgets[index];
    sinkWidgets.erase(index);
    updateDeviceVisibility();
}

void MainWindow::removeSource(uint32_t index) {
    if (!sourceWidgets.count(index))
        return;

    delete sourceWidgets[index];
    sourceWidgets.erase(index);
    updateDeviceVisibility();
}

void MainWindow::removeSinkInput(uint32_t index) {
    if (!sinkInputWidgets.count(index))
        return;

    delete sinkInputWidgets[index];
    sinkInputWidgets.erase(index);
    updateDeviceVisibility();
}

void MainWindow::removeSourceOutput(uint32_t index) {
    if (!sourceOutputWidgets.count(index))
        return;

    delete sourceOutputWidgets[index];
    sourceOutputWidgets.erase(index);
    updateDeviceVisibility();
}

void MainWindow::removeClient(uint32_t index) {
    g_free(clientNames[index]);
    clientNames.erase(index);
}

void MainWindow::removeAllWidgets() {
    for (auto & sinkInputWidget : sinkInputWidgets)
        removeSinkInput(sinkInputWidget.first);
    for (auto & sourceOutputWidget : sourceOutputWidgets)
        removeSourceOutput(sourceOutputWidget.first);
    for (auto & sinkWidget : sinkWidgets)
        removeSink(sinkWidget.first);
    for (auto & sourceWidget : sourceWidgets)
        removeSource(sourceWidget.first);
    for (auto & cardWidget : cardWidgets)
       removeCard(cardWidget.first);
    for (auto & clientName : clientNames)
        removeClient(clientName.first);
    deleteEventRoleWidget();
}

void MainWindow::setConnectingMessage(const char *string) {
    QByteArray markup = "<i>";
    if (!string)
        markup += tr("Establishing connection to PulseAudio. Please wait...").toUtf8().constData();
    else
        markup += string;
    markup += "</i>";
    connectingLabel->setText(QString::fromUtf8(markup));
}

void MainWindow::onSinkTypeComboBoxChanged(int /*index*/) {
    showSinkType = (SinkType) sinkTypeComboBox->currentIndex();

    if (showSinkType == (SinkType) -1)
        sinkTypeComboBox->setCurrentIndex((int) SINK_ALL);

    updateDeviceVisibility();
}

void MainWindow::onSourceTypeComboBoxChanged(int /*index*/) {
    showSourceType = (SourceType) sourceTypeComboBox->currentIndex();

    if (showSourceType == (SourceType) -1)
        sourceTypeComboBox->setCurrentIndex((int) SOURCE_NO_MONITOR);

    updateDeviceVisibility();
}

void MainWindow::onSinkInputTypeComboBoxChanged(int /*index*/) {
    showSinkInputType = (SinkInputType) sinkInputTypeComboBox->currentIndex();

    if (showSinkInputType == (SinkInputType) -1)
        sinkInputTypeComboBox->setCurrentIndex((int) SINK_INPUT_CLIENT);

    updateDeviceVisibility();
}

void MainWindow::onSourceOutputTypeComboBoxChanged(int /*index*/) {
    showSourceOutputType = (SourceOutputType) sourceOutputTypeComboBox->currentIndex();

    if (showSourceOutputType == (SourceOutputType) -1)
        sourceOutputTypeComboBox->setCurrentIndex((int) SOURCE_OUTPUT_CLIENT);

    updateDeviceVisibility();
}


void MainWindow::onShowVolumeMetersCheckButtonToggled(bool /*toggled*/) {
    bool state = showVolumeMetersCheckButton->isChecked();
    pa_operation *o;

    for (auto & sinkWidget : sinkWidgets) {
        SinkWidget *sw = sinkWidget.second;
        if (sw->peak) {
            o = pa_stream_cork(sw->peak, (int)!state, nullptr, nullptr);
            if (o)
                pa_operation_unref(o);
        }
        sw->setVolumeMeterVisible(state);
    }
    for (auto & sourceWidget : sourceWidgets) {
        SourceWidget *sw = sourceWidget.second;
        if (sw->peak) {
            o = pa_stream_cork(sw->peak, (int)!state, nullptr, nullptr);
            if (o)
                pa_operation_unref(o);
        }
        sw->setVolumeMeterVisible(state);
    }
    for (auto & sinkInputWidget : sinkInputWidgets) {
        SinkInputWidget *sw = sinkInputWidget.second;
        if (sw->peak) {
            o = pa_stream_cork(sw->peak, (int)!state, nullptr, nullptr);
            if (o)
                pa_operation_unref(o);
        }
        sw->setVolumeMeterVisible(state);
    }
    for (auto & sourceOutputWidget : sourceOutputWidgets) {
        SourceOutputWidget *sw = sourceOutputWidget.second;
        if (sw->peak) {
            o = pa_stream_cork(sw->peak, (int)!state, nullptr, nullptr);
            if (o)
                pa_operation_unref(o);
        }
        sw->setVolumeMeterVisible(state);
    }
}