#include <QHBoxLayout>
#include <QLabel>
#include <QSpinBox>
#include <QCheckBox>
#include <QSlider>
#include "qt-wrappers.hpp"
#include "adv-audio-control.hpp"

#ifndef NSEC_PER_MSEC
#define NSEC_PER_MSEC 1000000
#endif

OBSAdvAudioCtrl::OBSAdvAudioCtrl(obs_source_t *source_)
	: source(source_)
{
	QWidget *forceMonoContainer;
	QWidget *mediaChannelContainer;
	QWidget *panningContainer;
	QHBoxLayout *hlayout;
	QLabel  *labelL, *labelR;
	signal_handler_t *handler = obs_source_get_signal_handler(source);
	const char *sourceName = obs_source_get_name(source);
	float vol = obs_source_get_volume(source);
	uint32_t flags = obs_source_get_flags(source);

	forceMonoContainer             = new QWidget();
	mediaChannelContainer          = new QWidget();
	panningContainer               = new QWidget();
	labelL                         = new QLabel();
	labelR                         = new QLabel();
	nameLabel                      = new QLabel();
	volume                         = new QSpinBox();
	forceMono                      = new QCheckBox();
	panning                        = new QSlider(Qt::Horizontal);
	syncOffset                     = new QSpinBox();
	mediaChannel1                  = new QCheckBox();
	mediaChannel2                  = new QCheckBox();
	mediaChannel3                  = new QCheckBox();
	mediaChannel4                  = new QCheckBox();

	volChangedSignal.Connect(handler, "volume", OBSSourceVolumeChanged,
			this);
	syncOffsetSignal.Connect(handler, "audio_sync", OBSSourceSyncChanged,
			this);
	flagsSignal.Connect(handler, "update_flags", OBSSourceFlagsChanged,
			this);

	hlayout = new QHBoxLayout();
	hlayout->setContentsMargins(0, 0, 0, 0);
	forceMonoContainer->setLayout(hlayout);
	hlayout = new QHBoxLayout();
	hlayout->setContentsMargins(0, 0, 0, 0);
	mediaChannelContainer->setLayout(hlayout);
	hlayout = new QHBoxLayout();
	hlayout->setContentsMargins(0, 0, 0, 0);
	panningContainer->setLayout(hlayout);

	labelL->setText("L");

	labelR->setText("R");

	nameLabel->setMinimumWidth(170);
	nameLabel->setText(QT_UTF8(sourceName));
	nameLabel->setAlignment(Qt::AlignHCenter | Qt::AlignVCenter);

	volume->setMinimum(0);
	volume->setMaximum(2000);
	volume->setMinimumWidth(130);
	volume->setMaximumWidth(130);
	volume->setValue(int(vol * 100.0f));

	forceMono->setChecked((flags & OBS_SOURCE_FLAG_FORCE_MONO) != 0);

	forceMonoContainer->setMinimumWidth(130);
	forceMonoContainer->setMaximumWidth(130);
	forceMonoContainer->layout()->addWidget(forceMono);
	forceMonoContainer->layout()->setAlignment(forceMono,
			Qt::AlignHCenter | Qt::AlignVCenter);

	panning->setMinimum(0);
	panning->setMaximum(100);
	panning->setTickPosition(QSlider::TicksAbove);
	panning->setEnabled(false);
	panning->setValue(50); /* XXX */

	int64_t cur_sync = obs_source_get_sync_offset(source);
	syncOffset->setMinimum(-20000);
	syncOffset->setMaximum(20000);
	syncOffset->setMinimumWidth(130);
	syncOffset->setMaximumWidth(130);
	syncOffset->setValue(int(cur_sync / NSEC_PER_MSEC));

	mediaChannel1->setChecked(true);
	mediaChannel1->setText("1");
	mediaChannel1->setEnabled(false);
	mediaChannel2->setText("2");
	mediaChannel2->setEnabled(false);
	mediaChannel3->setText("3");
	mediaChannel3->setEnabled(false);
	mediaChannel4->setText("4");
	mediaChannel4->setEnabled(false);

	panningContainer->setMinimumWidth(140);
	panningContainer->setMaximumWidth(140);
	panningContainer->layout()->addWidget(labelL);
	panningContainer->layout()->addWidget(panning);
	panningContainer->layout()->addWidget(labelR);

	mediaChannelContainer->setMinimumWidth(160);
	mediaChannelContainer->setMaximumWidth(160);
	mediaChannelContainer->layout()->addWidget(mediaChannel1);
	mediaChannelContainer->layout()->addWidget(mediaChannel2);
	mediaChannelContainer->layout()->addWidget(mediaChannel3);
	mediaChannelContainer->layout()->addWidget(mediaChannel4);

	QWidget::connect(volume, SIGNAL(valueChanged(int)),
			this, SLOT(volumeChanged(int)));
	QWidget::connect(forceMono, SIGNAL(clicked(bool)),
			this, SLOT(downmixMonoChanged(bool)));
	QWidget::connect(panning, SIGNAL(valueChanged(int)),
			this, SLOT(panningChanged(int)));
	QWidget::connect(syncOffset, SIGNAL(valueChanged(int)),
			this, SLOT(syncOffsetChanged(int)));
	QWidget::connect(mediaChannel1, SIGNAL(clicked(bool)),
			this, SLOT(mediaChannel1Changed(bool)));
	QWidget::connect(mediaChannel2, SIGNAL(clicked(bool)),
			this, SLOT(mediaChannel2Changed(bool)));
	QWidget::connect(mediaChannel3, SIGNAL(clicked(bool)),
			this, SLOT(mediaChannel3Changed(bool)));
	QWidget::connect(mediaChannel4, SIGNAL(clicked(bool)),
			this, SLOT(mediaChannel4Changed(bool)));

	hlayout = new QHBoxLayout;
	hlayout->setContentsMargins(0, 0, 0, 0);
	hlayout->addWidget(nameLabel);
	hlayout->addWidget(volume);
	hlayout->addWidget(forceMonoContainer);
	hlayout->addWidget(panningContainer);
	hlayout->addWidget(syncOffset);
	hlayout->addWidget(mediaChannelContainer);
	setLayout(hlayout);
	setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Maximum);
}

/* ------------------------------------------------------------------------- */
/* OBS source callbacks */

void OBSAdvAudioCtrl::OBSSourceFlagsChanged(void *param, calldata_t *calldata)
{
	uint32_t flags = (uint32_t)calldata_int(calldata, "flags");
	QMetaObject::invokeMethod(reinterpret_cast<OBSAdvAudioCtrl*>(param),
			"SourceFlagsChanged", Q_ARG(uint32_t, flags));

}

void OBSAdvAudioCtrl::OBSSourceVolumeChanged(void *param, calldata_t *calldata)
{
	float volume = (float)calldata_float(calldata, "volume");
	QMetaObject::invokeMethod(reinterpret_cast<OBSAdvAudioCtrl*>(param),
			"SourceVolumeChanged", Q_ARG(float, volume));
}

void OBSAdvAudioCtrl::OBSSourceSyncChanged(void *param, calldata_t *calldata)
{
	int64_t offset = calldata_int(calldata, "offset");
	QMetaObject::invokeMethod(reinterpret_cast<OBSAdvAudioCtrl*>(param),
			"SourceSyncChanged", Q_ARG(int64_t, offset));
}

/* ------------------------------------------------------------------------- */
/* Qt event queue source callbacks */

void OBSAdvAudioCtrl::SourceFlagsChanged(uint32_t flags)
{
	bool forceMonoVal = (flags & OBS_SOURCE_FLAG_FORCE_MONO) != 0;

	if (forceMono->isChecked() != forceMonoVal)
		forceMono->setChecked(forceMonoVal);
}

void OBSAdvAudioCtrl::SourceVolumeChanged(float value)
{
	volume->blockSignals(true);
	volume->setValue(int(value * 100));
	volume->blockSignals(false);
}

void OBSAdvAudioCtrl::SourceSyncChanged(int64_t offset)
{
	syncOffset->setValue(offset / NSEC_PER_MSEC);
}

/* ------------------------------------------------------------------------- */
/* Qt control callbacks */

void OBSAdvAudioCtrl::volumeChanged(int percentage)
{
	float val = float(percentage) / 100.0f;
	if (!close_float(val, obs_source_get_volume(source), 0.01f))
		obs_source_set_volume(source, val);
}

void OBSAdvAudioCtrl::downmixMonoChanged(bool checked)
{
	uint32_t flags = obs_source_get_flags(source);
	bool forceMonoActive = (flags & OBS_SOURCE_FLAG_FORCE_MONO) != 0;

	if (forceMonoActive != checked) {
		if (checked)
			flags |= OBS_SOURCE_FLAG_FORCE_MONO;
		else
			flags &= ~OBS_SOURCE_FLAG_FORCE_MONO;

		obs_source_set_flags(source, flags);
	}
}

void OBSAdvAudioCtrl::panningChanged(int val)
{
	/* TODO */
	UNUSED_PARAMETER(val);
}

void OBSAdvAudioCtrl::syncOffsetChanged(int milliseconds)
{
	int64_t cur_val = obs_source_get_sync_offset(source);

	if (cur_val / NSEC_PER_MSEC != milliseconds)
		obs_source_set_sync_offset(source,
				int64_t(milliseconds) * NSEC_PER_MSEC);
}

void OBSAdvAudioCtrl::mediaChannel1Changed(bool checked)
{
	/* TODO */
	UNUSED_PARAMETER(checked);
}

void OBSAdvAudioCtrl::mediaChannel2Changed(bool checked)
{
	/* TODO */
	UNUSED_PARAMETER(checked);
}

void OBSAdvAudioCtrl::mediaChannel3Changed(bool checked)
{
	/* TODO */
	UNUSED_PARAMETER(checked);
}

void OBSAdvAudioCtrl::mediaChannel4Changed(bool checked)
{
	/* TODO */
	UNUSED_PARAMETER(checked);
}