/******************************************************************************
    Copyright (C) 2023 by Lain Bailey <lain@obsproject.com>
                          Zachary Lund <admin@computerquip.com>
                          Philippe Groarke <philippe.groarke@gmail.com>

    This program 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.

    This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
******************************************************************************/

#include "OBSBasic.hpp"

#include <widgets/VolControl.hpp>

using namespace std;

void OBSBasic::UpdateVolumeControlsDecayRate()
{
	double meterDecayRate = config_get_double(activeConfiguration, "Audio", "MeterDecayRate");

	for (size_t i = 0; i < volumes.size(); i++) {
		volumes[i]->SetMeterDecayRate(meterDecayRate);
	}
}

void OBSBasic::UpdateVolumeControlsPeakMeterType()
{
	uint32_t peakMeterTypeIdx = config_get_uint(activeConfiguration, "Audio", "PeakMeterType");

	enum obs_peak_meter_type peakMeterType;
	switch (peakMeterTypeIdx) {
	case 0:
		peakMeterType = SAMPLE_PEAK_METER;
		break;
	case 1:
		peakMeterType = TRUE_PEAK_METER;
		break;
	default:
		peakMeterType = SAMPLE_PEAK_METER;
		break;
	}

	for (size_t i = 0; i < volumes.size(); i++) {
		volumes[i]->setPeakMeterType(peakMeterType);
	}
}

void OBSBasic::ClearVolumeControls()
{
	for (VolControl *vol : volumes)
		delete vol;

	volumes.clear();
}

void OBSBasic::RefreshVolumeColors()
{
	for (VolControl *vol : volumes) {
		vol->refreshColors();
	}
}

void OBSBasic::HideAudioControl()
{
	QAction *action = reinterpret_cast<QAction *>(sender());
	VolControl *vol = action->property("volControl").value<VolControl *>();
	obs_source_t *source = vol->GetSource();

	if (!SourceMixerHidden(source)) {
		SetSourceMixerHidden(source, true);
		DeactivateAudioSource(source);
	}
}

void OBSBasic::UnhideAllAudioControls()
{
	auto UnhideAudioMixer = [this](obs_source_t *source) /* -- */
	{
		if (!obs_source_active(source))
			return true;
		if (!SourceMixerHidden(source))
			return true;

		SetSourceMixerHidden(source, false);
		ActivateAudioSource(source);
		return true;
	};

	using UnhideAudioMixer_t = decltype(UnhideAudioMixer);

	auto PreEnum = [](void *data, obs_source_t *source) -> bool /* -- */
	{
		return (*static_cast<UnhideAudioMixer_t *>(data))(source);
	};

	obs_enum_sources(PreEnum, &UnhideAudioMixer);
}

void OBSBasic::ToggleHideMixer()
{
	OBSSceneItem item = GetCurrentSceneItem();
	OBSSource source = obs_sceneitem_get_source(item);

	if (!SourceMixerHidden(source)) {
		SetSourceMixerHidden(source, true);
		DeactivateAudioSource(source);
	} else {
		SetSourceMixerHidden(source, false);
		ActivateAudioSource(source);
	}
}

void OBSBasic::LockVolumeControl(bool lock)
{
	QAction *action = reinterpret_cast<QAction *>(sender());
	VolControl *vol = action->property("volControl").value<VolControl *>();
	obs_source_t *source = vol->GetSource();

	OBSDataAutoRelease priv_settings = obs_source_get_private_settings(source);
	obs_data_set_bool(priv_settings, "volume_locked", lock);

	vol->EnableSlider(!lock);
}

void OBSBasic::VolControlContextMenu()
{
	VolControl *vol = reinterpret_cast<VolControl *>(sender());

	/* ------------------- */

	QAction lockAction(QTStr("LockVolume"), this);
	lockAction.setCheckable(true);
	lockAction.setChecked(SourceVolumeLocked(vol->GetSource()));

	QAction hideAction(QTStr("Hide"), this);
	QAction unhideAllAction(QTStr("UnhideAll"), this);
	QAction mixerRenameAction(QTStr("Rename"), this);

	QAction copyFiltersAction(QTStr("Copy.Filters"), this);
	QAction pasteFiltersAction(QTStr("Paste.Filters"), this);

	QAction filtersAction(QTStr("Filters"), this);
	QAction propertiesAction(QTStr("Properties"), this);
	QAction advPropAction(QTStr("Basic.MainMenu.Edit.AdvAudio"), this);

	QAction toggleControlLayoutAction(QTStr("VerticalLayout"), this);
	toggleControlLayoutAction.setCheckable(true);
	toggleControlLayoutAction.setChecked(
		config_get_bool(App()->GetUserConfig(), "BasicWindow", "VerticalVolControl"));

	/* ------------------- */

	connect(&hideAction, &QAction::triggered, this, &OBSBasic::HideAudioControl, Qt::DirectConnection);
	connect(&unhideAllAction, &QAction::triggered, this, &OBSBasic::UnhideAllAudioControls, Qt::DirectConnection);
	connect(&lockAction, &QAction::toggled, this, &OBSBasic::LockVolumeControl, Qt::DirectConnection);
	connect(&mixerRenameAction, &QAction::triggered, this, &OBSBasic::MixerRenameSource, Qt::DirectConnection);

	connect(&copyFiltersAction, &QAction::triggered, this, &OBSBasic::AudioMixerCopyFilters, Qt::DirectConnection);
	connect(&pasteFiltersAction, &QAction::triggered, this, &OBSBasic::AudioMixerPasteFilters,
		Qt::DirectConnection);

	connect(&filtersAction, &QAction::triggered, this, &OBSBasic::GetAudioSourceFilters, Qt::DirectConnection);
	connect(&propertiesAction, &QAction::triggered, this, &OBSBasic::GetAudioSourceProperties,
		Qt::DirectConnection);
	connect(&advPropAction, &QAction::triggered, this, &OBSBasic::on_actionAdvAudioProperties_triggered,
		Qt::DirectConnection);

	/* ------------------- */

	connect(&toggleControlLayoutAction, &QAction::changed, this, &OBSBasic::ToggleVolControlLayout,
		Qt::DirectConnection);

	/* ------------------- */

	hideAction.setProperty("volControl", QVariant::fromValue<VolControl *>(vol));
	lockAction.setProperty("volControl", QVariant::fromValue<VolControl *>(vol));
	mixerRenameAction.setProperty("volControl", QVariant::fromValue<VolControl *>(vol));

	copyFiltersAction.setProperty("volControl", QVariant::fromValue<VolControl *>(vol));
	pasteFiltersAction.setProperty("volControl", QVariant::fromValue<VolControl *>(vol));

	filtersAction.setProperty("volControl", QVariant::fromValue<VolControl *>(vol));
	propertiesAction.setProperty("volControl", QVariant::fromValue<VolControl *>(vol));

	/* ------------------- */

	copyFiltersAction.setEnabled(obs_source_filter_count(vol->GetSource()) > 0);
	pasteFiltersAction.setEnabled(!obs_weak_source_expired(copyFiltersSource));

	QMenu popup;
	vol->SetContextMenu(&popup);
	popup.addAction(&lockAction);
	popup.addSeparator();
	popup.addAction(&unhideAllAction);
	popup.addAction(&hideAction);
	popup.addAction(&mixerRenameAction);
	popup.addSeparator();
	popup.addAction(&copyFiltersAction);
	popup.addAction(&pasteFiltersAction);
	popup.addSeparator();
	popup.addAction(&toggleControlLayoutAction);
	popup.addSeparator();
	popup.addAction(&filtersAction);
	popup.addAction(&propertiesAction);
	popup.addAction(&advPropAction);

	// toggleControlLayoutAction deletes and re-creates the volume controls
	// meaning that "vol" would be pointing to freed memory.
	if (popup.exec(QCursor::pos()) != &toggleControlLayoutAction)
		vol->SetContextMenu(nullptr);
}

void OBSBasic::on_hMixerScrollArea_customContextMenuRequested()
{
	StackedMixerAreaContextMenuRequested();
}

void OBSBasic::on_vMixerScrollArea_customContextMenuRequested()
{
	StackedMixerAreaContextMenuRequested();
}

void OBSBasic::StackedMixerAreaContextMenuRequested()
{
	QAction unhideAllAction(QTStr("UnhideAll"), this);

	QAction advPropAction(QTStr("Basic.MainMenu.Edit.AdvAudio"), this);

	QAction toggleControlLayoutAction(QTStr("VerticalLayout"), this);
	toggleControlLayoutAction.setCheckable(true);
	toggleControlLayoutAction.setChecked(
		config_get_bool(App()->GetUserConfig(), "BasicWindow", "VerticalVolControl"));

	/* ------------------- */

	connect(&unhideAllAction, &QAction::triggered, this, &OBSBasic::UnhideAllAudioControls, Qt::DirectConnection);

	connect(&advPropAction, &QAction::triggered, this, &OBSBasic::on_actionAdvAudioProperties_triggered,
		Qt::DirectConnection);

	/* ------------------- */

	connect(&toggleControlLayoutAction, &QAction::changed, this, &OBSBasic::ToggleVolControlLayout,
		Qt::DirectConnection);

	/* ------------------- */

	QMenu popup;
	popup.addAction(&unhideAllAction);
	popup.addSeparator();
	popup.addAction(&toggleControlLayoutAction);
	popup.addSeparator();
	popup.addAction(&advPropAction);
	popup.exec(QCursor::pos());
}

void OBSBasic::ToggleMixerLayout(bool vertical)
{
	if (vertical) {
		ui->stackedMixerArea->setMinimumSize(180, 220);
		ui->stackedMixerArea->setCurrentIndex(1);
	} else {
		ui->stackedMixerArea->setMinimumSize(220, 0);
		ui->stackedMixerArea->setCurrentIndex(0);
	}
}

void OBSBasic::ToggleVolControlLayout()
{
	bool vertical = !config_get_bool(App()->GetUserConfig(), "BasicWindow", "VerticalVolControl");
	config_set_bool(App()->GetUserConfig(), "BasicWindow", "VerticalVolControl", vertical);
	ToggleMixerLayout(vertical);

	// We need to store it so we can delete current and then add
	// at the right order
	vector<OBSSource> sources;
	for (size_t i = 0; i != volumes.size(); i++)
		sources.emplace_back(volumes[i]->GetSource());

	ClearVolumeControls();

	for (const auto &source : sources)
		ActivateAudioSource(source);
}

void OBSBasic::on_actionMixerToolbarAdvAudio_triggered()
{
	on_actionAdvAudioProperties_triggered();
}

void OBSBasic::on_actionMixerToolbarMenu_triggered()
{
	QAction unhideAllAction(QTStr("UnhideAll"), this);
	connect(&unhideAllAction, &QAction::triggered, this, &OBSBasic::UnhideAllAudioControls, Qt::DirectConnection);

	QAction toggleControlLayoutAction(QTStr("VerticalLayout"), this);
	toggleControlLayoutAction.setCheckable(true);
	toggleControlLayoutAction.setChecked(
		config_get_bool(App()->GetUserConfig(), "BasicWindow", "VerticalVolControl"));
	connect(&toggleControlLayoutAction, &QAction::changed, this, &OBSBasic::ToggleVolControlLayout,
		Qt::DirectConnection);

	QMenu popup;
	popup.addAction(&unhideAllAction);
	popup.addSeparator();
	popup.addAction(&toggleControlLayoutAction);
	popup.exec(QCursor::pos());
}