/*
 * Hydrogen
 * Copyright(c) 2002-2008 by Alex >Comix< Cominu [comix@users.sourceforge.net]
 * Copyright(c) 2008-2023 The hydrogen development team [hydrogen-devel@lists.sourceforge.net]
 *
 * http://www.hydrogen-music.org
 *
 * 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 https://www.gnu.org/licenses
 *
 */

#include <core/Basics/Instrument.h>

#include <cassert>

#include <core/Hydrogen.h>

#include <core/Helpers/Legacy.h>
#include <core/Helpers/Xml.h>

#include <core/Basics/Adsr.h>
#include <core/Basics/Sample.h>
#include <core/Basics/Drumkit.h>
#include <core/Basics/DrumkitComponent.h>
#include <core/Basics/InstrumentList.h>
#include <core/Basics/InstrumentComponent.h>
#include <core/Basics/InstrumentLayer.h>
#include <core/Sampler/Sampler.h>
#include <core/SoundLibrary/SoundLibraryDatabase.h>

namespace H2Core
{

Instrument::Instrument( const int id, const QString& name, std::shared_ptr<ADSR> adsr )
	: __id( id )
	, __name( name )
	, __gain( 1.0 )
	, __volume( 1.0 )
	, m_fPan( 0.f )
	, __peak_l( 0.0 )
	, __peak_r( 0.0 )
	, __adsr( adsr )
	, __filter_active( false )
	, __filter_cutoff( 1.0 )
	, __filter_resonance( 0.0 )
	, __pitch_offset( 0.0 )
	, __random_pitch_factor( 0.0 )
	, __midi_out_note( 36 + id )
	, __midi_out_channel( -1 )
	, __stop_notes( false )
	, __sample_selection_alg( VELOCITY )
	, __active( true )
	, __soloed( false )
	, __muted( false )
	, __mute_group( -1 )
	, __queued( 0 )
	, __hihat_grp( -1 )
	, __lower_cc( 0 )
	, __higher_cc( 127 )
	, __components( nullptr )
	, __is_preview_instrument(false)
	, __is_metronome_instrument(false)
	, __apply_velocity( true )
	, __current_instr_for_export(false)
	, m_bHasMissingSamples( false )
{
	if ( __adsr == nullptr ) {
		__adsr = std::make_shared<ADSR>();
	}

    if( __midi_out_note < MIDI_OUT_NOTE_MIN ){
		__midi_out_note = MIDI_OUT_NOTE_MIN;	
	}
	
	if( __midi_out_note > MIDI_OUT_NOTE_MAX ){
		__midi_out_note = MIDI_OUT_NOTE_MAX;	
	}
	
	for ( int i=0; i<MAX_FX; i++ ) {
		__fx_level[i] = 0.0;
	}
	__components = new std::vector<std::shared_ptr<InstrumentComponent>>();
}

Instrument::Instrument( std::shared_ptr<Instrument> other )
	: __id( other->get_id() )
	, __name( other->get_name() )
	, __gain( other->__gain )
	, __volume( other->get_volume() )
	, m_fPan( other->getPan() )
	, __peak_l( other->get_peak_l() )
	, __peak_r( other->get_peak_r() )
	, __adsr( std::make_shared<ADSR>( *( other->get_adsr() ) ) )
	, __filter_active( other->is_filter_active() )
	, __filter_cutoff( other->get_filter_cutoff() )
	, __filter_resonance( other->get_filter_resonance() )
	, __pitch_offset( other->get_pitch_offset() )
	, __random_pitch_factor( other->get_random_pitch_factor() )
	, __midi_out_note( other->get_midi_out_note() )
	, __midi_out_channel( other->get_midi_out_channel() )
	, __stop_notes( other->is_stop_notes() )
	, __sample_selection_alg( other->sample_selection_alg() )
	, __active( other->is_active() )
	, __soloed( other->is_soloed() )
	, __muted( other->is_muted() )
	, __mute_group( other->get_mute_group() )
	, __queued( other->is_queued() )
	, __hihat_grp( other->get_hihat_grp() )
	, __lower_cc( other->get_lower_cc() )
	, __higher_cc( other->get_higher_cc() )
	, __components( nullptr )
	, __is_preview_instrument(false)
	, __is_metronome_instrument(false)
	, __apply_velocity( other->get_apply_velocity() )
	, __current_instr_for_export(false)
	, m_bHasMissingSamples(other->has_missing_samples())
	, __drumkit_path( other->get_drumkit_path() )
	, __drumkit_name( other->__drumkit_name )
{
	for ( int i=0; i<MAX_FX; i++ ) {
		__fx_level[i] = other->get_fx_level( i );
	}

	__components = new std::vector<std::shared_ptr<InstrumentComponent>>();
	for ( auto& pComponent : *other->get_components() ) {
		__components->push_back( std::make_shared<InstrumentComponent>( pComponent ) );
	}
}

Instrument::~Instrument()
{
	delete __components;
}

std::shared_ptr<Instrument> Instrument::load_instrument( const QString& drumkit_path, const QString& instrument_name )
{
	auto pInstrument = std::make_shared<Instrument>();
	pInstrument->load_from( drumkit_path, instrument_name );
	return pInstrument;
}

void Instrument::load_from( std::shared_ptr<Drumkit> pDrumkit, std::shared_ptr<Instrument> pInstrument )
{
	assert( pDrumkit );
	if ( pDrumkit == nullptr ) {
		ERRORLOG( "Invalid drumkit supplied" );
		return;
	}
	
	this->get_components()->clear();
	
	set_missing_samples( false );

	for ( const auto& pSrcComponent : *pInstrument->get_components() ) {
		auto pMyComponent = std::make_shared<InstrumentComponent>( pSrcComponent->get_drumkit_componentID() );
		pMyComponent->set_gain( pSrcComponent->get_gain() );

		this->get_components()->push_back( pMyComponent );

		for ( int i = 0; i < InstrumentComponent::getMaxLayers(); i++ ) {
			auto src_layer = pSrcComponent->get_layer( i );
			auto my_layer = pMyComponent->get_layer( i );

			if( src_layer == nullptr ) {
				pMyComponent->set_layer( nullptr, i );
			}
			else {
				std::shared_ptr<Sample> pSample = nullptr;
				QString sSamplePath;
				
				if ( src_layer->get_sample() != nullptr ) {
					QString sSamplePath = pDrumkit->get_path() + "/" + src_layer->get_sample()->get_filename();
					pSample = Sample::load( sSamplePath );
				}
				
				if ( pSample == nullptr ) {
					_ERRORLOG( QString( "Error loading sample %1. Creating a new empty layer." )
							   .arg( sSamplePath ) );
					set_missing_samples( true );
					pMyComponent->set_layer( nullptr, i );

				}
				else {
					pSample->setLicense( pDrumkit->get_license() );
					pMyComponent->set_layer( std::make_shared<InstrumentLayer>( src_layer, pSample ), i );
				}
			}
			my_layer = nullptr;
		}
	}

	this->set_id( pInstrument->get_id() );
	this->set_name( pInstrument->get_name() );
	this->set_drumkit_path( pDrumkit->get_path() );
	this->set_drumkit_name( pDrumkit->get_name() );
	this->set_gain( pInstrument->get_gain() );
	this->set_volume( pInstrument->get_volume() );
	this->setPan( pInstrument->getPan() );
	this->set_adsr( std::make_shared<ADSR>( *( pInstrument->get_adsr() ) ) );
	this->set_filter_active( pInstrument->is_filter_active() );
	this->set_filter_cutoff( pInstrument->get_filter_cutoff() );
	this->set_filter_resonance( pInstrument->get_filter_resonance() );
	this->set_pitch_offset( pInstrument->get_pitch_offset() );
	this->set_random_pitch_factor( pInstrument->get_random_pitch_factor() );
	this->set_mute_group( pInstrument->get_mute_group() );
	this->set_midi_out_channel( pInstrument->get_midi_out_channel() );
	this->set_midi_out_note( pInstrument->get_midi_out_note() );
	this->set_stop_notes( pInstrument->is_stop_notes() );
	this->set_sample_selection_alg( pInstrument->sample_selection_alg() );
	this->set_active( pInstrument->is_active() );
	this->set_soloed( pInstrument->is_soloed() );
	this->set_muted( pInstrument->is_muted() );
	this->set_hihat_grp( pInstrument->get_hihat_grp() );
	this->set_lower_cc( pInstrument->get_lower_cc() );
	this->set_higher_cc( pInstrument->get_higher_cc() );
	this->set_apply_velocity ( pInstrument->get_apply_velocity() );

	for ( int ii = 0; ii < MAX_FX; ++ii ) {
		this->set_fx_level( pInstrument->get_fx_level( ii ), ii );
	}
}

void Instrument::load_from( const QString& sDrumkitPath, const QString& sInstrumentName )
{
	std::shared_ptr<Drumkit> pDrumkit;
	
	// Try to retrieve the name from cache first.
	auto pHydrogen = Hydrogen::get_instance();
	if ( pHydrogen != nullptr ) {
		pDrumkit = pHydrogen->getSoundLibraryDatabase()->getDrumkit( sDrumkitPath );
	}

	assert( pDrumkit );
	if ( pDrumkit == nullptr ) {
		ERRORLOG( QString( "Unable to load instrument: corresponding drumkit [%1] could not be loaded" )
				  .arg( sDrumkitPath ) );
		return;
	}

	auto pInstrument = pDrumkit->get_instruments()->find( sInstrumentName );
	if ( pInstrument != nullptr ) {
		load_from( pDrumkit, pInstrument );
	}
	else {
		ERRORLOG( QString( "Unable to load instrument: instrument [%1] could not be found in drumkit [%2]" )
				  .arg( sInstrumentName ).arg( sDrumkitPath ) );
	}
}

std::shared_ptr<Instrument> Instrument::load_from( XMLNode* pNode, const QString& sDrumkitPath, const QString& sDrumkitName, const License& license, bool bSilent )
{
	// We use -2 instead of EMPTY_INSTR_ID (-1) to allow for loading
	// empty instruments as well (e.g. during unit tests or as part of
	// dummy kits)
	int nId = pNode->read_int( "id", -2, false, false, bSilent );
	if ( nId == -2 ) {
		return nullptr;
	}

	auto pInstrument =
		std::make_shared<Instrument>(
			nId,
			pNode->read_string( "name", "", false, false, bSilent ),
			std::make_shared<ADSR>( pNode->read_int( "Attack", 0, true, false, bSilent ),
									pNode->read_int( "Decay", 0, true, false, bSilent  ),
									pNode->read_float( "Sustain", 1.0f, true, false, bSilent ),
									pNode->read_int( "Release", 1000, true, false, bSilent ) ) );

	QString sInstrumentDrumkitPath, sInstrumentDrumkitName;
	if ( sDrumkitPath.isEmpty() || sDrumkitName.isEmpty() ) {
		// Instrument is not read as part of a Drumkit but as part of
		// a Song. The drumkit meta info will be read from disk.
		sInstrumentDrumkitName = pNode->read_string( "drumkit", "", false,
													 false, bSilent );
		
		if ( ! pNode->firstChildElement( "drumkitPath" ).isNull() ) {
			// Current format
			sInstrumentDrumkitPath = pNode->read_string( "drumkitPath", "",
														 false, false, bSilent  );

#ifdef H2CORE_HAVE_APPIMAGE
			sInstrumentDrumkitPath =
				Filesystem::rerouteDrumkitPath( sInstrumentDrumkitPath );
#endif

			// Check whether corresponding drumkit exist.
			// When tweaking or assembling drumkits locally their
			// absolute paths serve as unique identifiers to keep them
			// apart. But in terms of portability (and to assure
			// backward compatibility) paths are bad and we will use
			// the drumkit name and check whether we can find the kit
			// on the local system.
			if ( ! Filesystem::drumkit_valid( sInstrumentDrumkitPath ) ) {
				WARNINGLOG( QString( "Couldn't find drumkit at [%1]. Searching for [%2] instead." )
							.arg( sInstrumentDrumkitPath )
							.arg( sInstrumentDrumkitName ) );
				sInstrumentDrumkitPath = "";
			}
		}

		if ( sInstrumentDrumkitPath.isEmpty() ) {
			if ( ! pNode->firstChildElement( "drumkitLookup" ).isNull() ) {
				// Format introduced in #1f2a06b and used in (at least)
				// releases 1.1.0-beta1, 1.1.0, and 1.1.1.
				//
				// Using the additional lookup variable two drumkits holding
				// the same name but one of the residing in user-space and
				// the other one in system-space can be distinguished.
				Filesystem::Lookup lookup =
					static_cast<Filesystem::Lookup>(
													pNode->read_int( "drumkitLookup",
																	 static_cast<int>(Filesystem::Lookup::stacked),
																	 false, false, bSilent ) );
			
				sInstrumentDrumkitPath =
					Filesystem::drumkit_path_search( sInstrumentDrumkitName,
													 lookup, true );

				if ( sInstrumentDrumkitPath.isEmpty() &&
					 lookup != Filesystem::Lookup::stacked ) {
					// Drumkit could not be found.
					//
					// It's possible the song was composed with a
					// custom version of a system-level drumkit stored
					// in user space. When loaded again in a fresh
					// installed Hydrogen the custom user-level one
					// will not be present anymore but it's plausible
					// to fall back to the system-level one. (The
					// other way around is also possible but much more
					// unlikely. Nevertheless we will use the stacked
					// search in one final effort)
					sInstrumentDrumkitPath =
						Filesystem::drumkit_path_search( sInstrumentDrumkitName,
														 Filesystem::Lookup::stacked,
														 true );

					if ( sInstrumentDrumkitPath.isEmpty() ) {
						ERRORLOG( QString( "Drumkit [%1] could neither found at system nor at user level." )
								  .arg( sInstrumentDrumkitName ) );
					}
					else if ( ! bSilent ) {
						WARNINGLOG( QString( "Drumkit [%1] could not found using lookup type [%2]. Falling back to [%3] found using stacked search" )
									.arg( sInstrumentDrumkitName )
									.arg( static_cast<int>(lookup) )
									.arg( sInstrumentDrumkitPath ) );
					}
				}
			}
			else if ( ! pNode->firstChildElement( "drumkit" ).isNull() ) {
				// Format used from version 0.9.7 till 1.1.0.
				//
				// It features just the name of the drumkit an relies on
				// it being unique throught the entire search path.
				sInstrumentDrumkitPath =
					Filesystem::drumkit_path_search( sInstrumentDrumkitName,
													 Filesystem::Lookup::stacked,
													 bSilent );
			}
			else {
				// Format used prior to 0.9.7 which worked with absolute
				// paths for the samples instead of relative ones.
				sInstrumentDrumkitPath = "";
			}
		}
	}
	else {
		sInstrumentDrumkitPath = sDrumkitPath;
		sInstrumentDrumkitName = sDrumkitName;
	}
	
	pInstrument->set_drumkit_path( sInstrumentDrumkitPath );
	pInstrument->__drumkit_name = sInstrumentDrumkitName;

	pInstrument->set_volume( pNode->read_float( "volume", 1.0f,
											   true, true, bSilent ) );
	pInstrument->set_muted( pNode->read_bool( "isMuted", false,
											 true, true, bSilent ) );
	pInstrument->set_soloed( pNode->read_bool( "isSoloed", false,
											  true, false, true ) );
	bool bFound, bFound2;
	float fPan = pNode->read_float( "pan", 0.f, &bFound,
								   true, true, true );
	if ( !bFound ) {
		// check if pan is expressed in the old fashion (version <=
		// 1.1 ) with the pair (pan_L, pan_R)
		float fPanL = pNode->read_float( "pan_L", 1.f, &bFound,
										true, true, bSilent );
		float fPanR = pNode->read_float( "pan_R", 1.f, &bFound2,
										true, true, bSilent );
		if ( bFound == true && bFound2 == true ) { // found nodes pan_L and pan_R
			fPan = Sampler::getRatioPan( fPanL, fPanR );  // convert to single pan parameter
		}
	}
	pInstrument->setPan( fPan );
	
	pInstrument->set_apply_velocity( pNode->read_bool( "applyVelocity", true,
													  false, true, bSilent ) );
	pInstrument->set_filter_active( pNode->read_bool( "filterActive", true,
													 false, true, bSilent ) );
	pInstrument->set_filter_cutoff( pNode->read_float( "filterCutoff", 1.0f,
													  true, false, bSilent ) );
	pInstrument->set_filter_resonance( pNode->read_float( "filterResonance", 0.0f,
														 true, false, bSilent ) );
	pInstrument->set_pitch_offset( pNode->read_float( "pitchOffset", 0.0f,
													 true, false, true ) );
	pInstrument->set_random_pitch_factor( pNode->read_float( "randomPitchFactor", 0.0f,
															true, false, bSilent ) );
	pInstrument->set_gain( pNode->read_float( "gain", 1.0f,
											 true, false, bSilent ) );
	pInstrument->set_mute_group( pNode->read_int( "muteGroup", -1,
												 true, false, bSilent ) );
	pInstrument->set_midi_out_channel( pNode->read_int( "midiOutChannel", -1,
													   true, false, bSilent ) );
	pInstrument->set_midi_out_note( pNode->read_int( "midiOutNote", pInstrument->__midi_out_note,
													true, false, bSilent ) );
	pInstrument->set_stop_notes( pNode->read_bool( "isStopNote", true,
												  false, true, bSilent ) );

	QString sRead_sample_select_algo = pNode->read_string( "sampleSelectionAlgo", "VELOCITY",
														  true, true, bSilent  );
	if ( sRead_sample_select_algo.compare("VELOCITY") == 0 ) {
		pInstrument->set_sample_selection_alg( VELOCITY );
	}
	else if ( sRead_sample_select_algo.compare("ROUND_ROBIN") == 0 ) {
		pInstrument->set_sample_selection_alg( ROUND_ROBIN );
	}
	else if ( sRead_sample_select_algo.compare("RANDOM") == 0 ) {
		pInstrument->set_sample_selection_alg( RANDOM );
	}

	pInstrument->set_hihat_grp( pNode->read_int( "isHihat", -1,
												true, true, bSilent ) );
	pInstrument->set_lower_cc( pNode->read_int( "lower_cc", 0,
											   true, true, bSilent ) );
	pInstrument->set_higher_cc( pNode->read_int( "higher_cc", 127,
												true, true, bSilent ) );

	for ( int i=0; i<MAX_FX; i++ ) {
		pInstrument->set_fx_level( pNode->read_float( QString( "FX%1Level" ).arg( i+1 ), 0.0,
													 true, true, bSilent ), i );
	}

	// This license will be applied to all samples contained in this
	// instrument.
	License instrumentLicense;
	if ( license == License() ) {
		// No/empty license supplied. We will use the license stored
		// in the drumkit.xml file found in __drumkit_name. But since
		// loading it from file is a rather expensive action, we will
		// query it from the Drumkit database. If, for some reasons,
		// the drumkit is not present yet, the License will be loaded
		// directly.
		auto pSoundLibraryDatabase = Hydrogen::get_instance()->getSoundLibraryDatabase();
		if ( pSoundLibraryDatabase != nullptr ) {

			// It is important to _not_ load the drumkit into the
			// database as this code is part of the drumkit load
			// itself. In case two drumkits contain an instrument from
			// each other an infinite loop would be created.
			auto pDrumkit = pSoundLibraryDatabase->getDrumkit(
				pInstrument->get_drumkit_path(), false );
			if ( pDrumkit == nullptr ) {
				// Drumkit is not present in the database yet. Load
				// its license from disk.
				instrumentLicense = Drumkit::loadLicenseFrom( pInstrument->get_drumkit_path() );
			} else {
				instrumentLicense = pDrumkit->get_license();
			}
		}
	} else {
		instrumentLicense = license;
	}

	if ( ! pNode->firstChildElement( "instrumentComponent" ).isNull() ) {
		// current format
		XMLNode componentNode = pNode->firstChildElement( "instrumentComponent" );
		while ( ! componentNode.isNull() ) {
			pInstrument->get_components()->
				push_back( InstrumentComponent::load_from( &componentNode,
														   pInstrument->get_drumkit_path(),
														   instrumentLicense, bSilent ) );
			componentNode = componentNode.nextSiblingElement( "instrumentComponent" );
		}
	}
	else {
		// back compatibility code
		auto pCompo = Legacy::loadInstrumentComponent( pNode, pInstrument->get_drumkit_path(),
													   instrumentLicense, bSilent );
		if ( pCompo == nullptr ) {
			ERRORLOG( QString( "Unable to load component for instrument [%1]. Aborting." )
					  .arg( pInstrument->get_name() ) );
			return nullptr;
		}

		pInstrument->get_components()->push_back( pCompo );
	}

	// Sanity checks

	// There has to be at least one InstrumentComponent
	if ( pInstrument->get_components()->size() == 0 ) {
		pInstrument->get_components()->push_back(
			std::make_shared<InstrumentComponent>( 0 ) );
	}

	// Check whether there are missing samples
	bool bSampleFound = false;
	for ( const auto& pComponent : *pInstrument->get_components() ) {
		if ( pComponent == nullptr ) {
			ERRORLOG( "Invalid component. Something went wrong loading the instrument" );
			pInstrument->set_muted( true );
			pInstrument->set_missing_samples( true );
			break;
		}

		for ( const auto& pLayer : *pComponent ) {
			if ( pLayer == nullptr ) {
				// The component is filled with nullptr up to
				// InstrumentComponent::m_nMaxLayers.
				continue;
			}

			if ( pLayer->get_sample() != nullptr ) {
				if ( ! bSampleFound ) {
					bSampleFound = true;
				}
			} else {
				pInstrument->set_missing_samples( true );
			}
		}
	}

	if ( ! bSampleFound ) {
		pInstrument->set_muted( true );
	}
	
	return pInstrument;
}

void Instrument::load_samples( float fBpm )
{
	for ( auto& pComponent : *get_components() ) {
		for ( int i = 0; i < InstrumentComponent::getMaxLayers(); i++ ) {
			auto pLayer = pComponent->get_layer( i );
			if ( pLayer != nullptr ) {
				pLayer->load_sample( fBpm );
			}
		}
	}
}

void Instrument::unload_samples()
{
	for ( auto& pComponent : *get_components() ) {
		for ( int i = 0; i < InstrumentComponent::getMaxLayers(); i++ ) {
			auto pLayer = pComponent->get_layer( i );
			if( pLayer ){
				pLayer->unload_sample();
			}
		}
	}
}

void Instrument::save_to( XMLNode* node, int component_id, bool bRecentVersion, bool bFull )
{
	XMLNode InstrumentNode = node->createNode( "instrument" );
	InstrumentNode.write_int( "id", __id );
	InstrumentNode.write_string( "name", __name );

	if ( bFull ) {
		InstrumentNode.write_string( "drumkitPath", __drumkit_path );
		InstrumentNode.write_string( "drumkit", __drumkit_name );
	}
	
	InstrumentNode.write_float( "volume", __volume );
	InstrumentNode.write_bool( "isMuted", __muted );
	InstrumentNode.write_bool( "isSoloed", __soloed );

	// We still store the pan using the old format to allow drumkits
	// being created with Hydrogen versions v1.2 to be valid for prior
	// versions too. After a couple of years and when all major Linux
	// distributions ship a version >= 1.2 we can drop this part and
	// just store the plain pan.
	if ( getPan() >= 0.0 ) {
		InstrumentNode.write_float( "pan_L", 1.0 - getPan() );
		InstrumentNode.write_float( "pan_R", 1.0 );
	}
	else {
		InstrumentNode.write_float( "pan_L", 1.0 );
		InstrumentNode.write_float( "pan_R", getPan() + 1.0 );
	}
		
	InstrumentNode.write_float( "pitchOffset", __pitch_offset );
	InstrumentNode.write_float( "randomPitchFactor", __random_pitch_factor );
	InstrumentNode.write_float( "gain", __gain );
	InstrumentNode.write_bool( "applyVelocity", __apply_velocity );
	InstrumentNode.write_bool( "filterActive", __filter_active );
	InstrumentNode.write_float( "filterCutoff", __filter_cutoff );
	InstrumentNode.write_float( "filterResonance", __filter_resonance );
	InstrumentNode.write_int( "Attack", __adsr->getAttack() );
	InstrumentNode.write_int( "Decay", __adsr->getDecay() );
	InstrumentNode.write_float( "Sustain", __adsr->getSustain() );
	InstrumentNode.write_int( "Release", __adsr->getRelease() );
	InstrumentNode.write_int( "muteGroup", __mute_group );
	InstrumentNode.write_int( "midiOutChannel", __midi_out_channel );
	InstrumentNode.write_int( "midiOutNote", __midi_out_note );
	InstrumentNode.write_bool( "isStopNote", __stop_notes );

	switch ( __sample_selection_alg ) {
	case VELOCITY:
		InstrumentNode.write_string( "sampleSelectionAlgo", "VELOCITY" );
		break;
	case RANDOM:
		InstrumentNode.write_string( "sampleSelectionAlgo", "RANDOM" );
		break;
	case ROUND_ROBIN:
		InstrumentNode.write_string( "sampleSelectionAlgo", "ROUND_ROBIN" );
		break;
	}

	InstrumentNode.write_int( "isHihat", __hihat_grp );
	InstrumentNode.write_int( "lower_cc", __lower_cc );
	InstrumentNode.write_int( "higher_cc", __higher_cc );

	for ( int i=0; i<MAX_FX; i++ ) {
		InstrumentNode.write_float( QString( "FX%1Level" ).arg( i+1 ), __fx_level[i] );
	}
	
	for ( auto& pComponent : *__components ) {
		if( component_id == -1 ||
			pComponent->get_drumkit_componentID() == component_id ) {
			pComponent->save_to( &InstrumentNode, component_id, bRecentVersion, bFull );
		}
	}
}

void Instrument::set_adsr( std::shared_ptr<ADSR> adsr )
{
	__adsr = adsr;
}

std::shared_ptr<InstrumentComponent> Instrument::get_component( int DrumkitComponentID )
{
	for ( const auto& pComponent : *get_components() ) {
		if( pComponent->get_drumkit_componentID() == DrumkitComponentID ) {
			return pComponent;
		}
	}

	return nullptr;
}

QString Instrument::get_drumkit_path() const
{
	return Filesystem::ensure_session_compatibility( __drumkit_path );
}

bool Instrument::hasSamples() const {
	for ( const auto& pComponent : *__components ) {
		if ( pComponent != nullptr ) {
			for ( const auto& pLayer : *pComponent ) {
				if ( pLayer != nullptr ) {
					if ( pLayer->get_sample() != nullptr ) {
						return true;
					}
				}
			}
		}
	}

	return false;
}

QString Instrument::toQString( const QString& sPrefix, bool bShort ) const {
	QString s = Base::sPrintIndention;
	QString sOutput;
	if ( ! bShort ) {
		sOutput = QString( "%1[Instrument]\n" ).arg( sPrefix )
			.append( QString( "%1%2id: %3\n" ).arg( sPrefix ).arg( s ).arg( __id ) )
			.append( QString( "%1%2name: %3\n" ).arg( sPrefix ).arg( s ).arg( __name ) )
			.append( QString( "%1%2drumkit_path: %3\n" ).arg( sPrefix ).arg( s ).arg( __drumkit_path ) )
			.append( QString( "%1%2drumkit_name: %3\n" ).arg( sPrefix ).arg( s ).arg( __drumkit_name ) )
			.append( QString( "%1%2gain: %3\n" ).arg( sPrefix ).arg( s ).arg( __gain ) )
			.append( QString( "%1%2volume: %3\n" ).arg( sPrefix ).arg( s ).arg( __volume ) )
			.append( QString( "%1%2pan: %3\n" ).arg( sPrefix ).arg( s ).arg( m_fPan ) )
			.append( QString( "%1%2peak_l: %3\n" ).arg( sPrefix ).arg( s ).arg( __peak_l ) )
			.append( QString( "%1%2peak_r: %3\n" ).arg( sPrefix ).arg( s ).arg( __peak_r ) )
			.append( QString( "%1" ).arg( __adsr->toQString( sPrefix + s, bShort ) ) )
			.append( QString( "%1%2filter_active: %3\n" ).arg( sPrefix ).arg( s ).arg( __filter_active ) )
			.append( QString( "%1%2filter_cutoff: %3\n" ).arg( sPrefix ).arg( s ).arg( __filter_cutoff ) )
			.append( QString( "%1%2filter_resonance: %3\n" ).arg( sPrefix ).arg( s ).arg( __filter_resonance ) )
			.append( QString( "%1%2random_pitch_factor: %3\n" ).arg( sPrefix ).arg( s ).arg( __random_pitch_factor ) )
			.append( QString( "%1%2pitch_offset: %3\n" ).arg( sPrefix ).arg( s ).arg( __pitch_offset ) )
			.append( QString( "%1%2midi_out_note: %3\n" ).arg( sPrefix ).arg( s ).arg( __midi_out_note ) )
			.append( QString( "%1%2midi_out_channel: %3\n" ).arg( sPrefix ).arg( s ).arg( __midi_out_channel ) )
			.append( QString( "%1%2stop_notes: %3\n" ).arg( sPrefix ).arg( s ).arg( __stop_notes ) )
			.append( QString( "%1%2sample_selection_alg: %3\n" ).arg( sPrefix ).arg( s ).arg( __sample_selection_alg ) )
			.append( QString( "%1%2active: %3\n" ).arg( sPrefix ).arg( s ).arg( __active ) )
			.append( QString( "%1%2soloed: %3\n" ).arg( sPrefix ).arg( s ).arg( __soloed ) )
			.append( QString( "%1%2muted: %3\n" ).arg( sPrefix ).arg( s ).arg( __muted ) )
			.append( QString( "%1%2mute_group: %3\n" ).arg( sPrefix ).arg( s ).arg( __mute_group ) )
			.append( QString( "%1%2queued: %3\n" ).arg( sPrefix ).arg( s ).arg( __queued ) ) ;
		sOutput.append( QString( "%1%2fx_level: [ " ).arg( sPrefix ).arg( s ) );
		for ( auto ff : __fx_level ) {
			sOutput.append( QString( "%1 " ).arg( ff ) );
		}
		sOutput.append( QString( "]\n" ) )
			.append( QString( "%1%2hihat_grp: %3\n" ).arg( sPrefix ).arg( s ).arg( __hihat_grp ) )
			.append( QString( "%1%2lower_cc: %3\n" ).arg( sPrefix ).arg( s ).arg( __lower_cc ) )
			.append( QString( "%1%2higher_cc: %3\n" ).arg( sPrefix ).arg( s ).arg( __higher_cc ) )
			.append( QString( "%1%2is_preview_instrument: %3\n" ).arg( sPrefix ).arg( s ).arg( __is_preview_instrument ) )
			.append( QString( "%1%2is_metronome_instrument: %3\n" ).arg( sPrefix ).arg( s ).arg( __is_metronome_instrument ) )
			.append( QString( "%1%2apply_velocity: %3\n" ).arg( sPrefix ).arg( s ).arg( __apply_velocity ) )
			.append( QString( "%1%2current_instr_for_export: %3\n" ).arg( sPrefix ).arg( s ).arg( __current_instr_for_export ) )
			.append( QString( "%1%2m_bHasMissingSamples: %3\n" ).arg( sPrefix ).arg( s ).arg( m_bHasMissingSamples ) )
			.append( QString( "%1%2components:\n" ).arg( sPrefix ).arg( s ) );
		for ( auto cc : *__components ) {
			if ( cc != nullptr ) {
				sOutput.append( QString( "%1" ).arg( cc->toQString( sPrefix + s + s, bShort ) ) );
			}
		}
	} else {
		
		sOutput = QString( "[Instrument]" )
			.append( QString( " id: %1" ).arg( __id ) )
			.append( QString( ", name: %1" ).arg( __name ) )
			.append( QString( ", drumkit_path: %1" ).arg( __drumkit_path ) )
			.append( QString( ", drumkit_name: %1" ).arg( __drumkit_name ) )
			.append( QString( ", gain: %1" ).arg( __gain ) )
			.append( QString( ", volume: %1" ).arg( __volume ) )
			.append( QString( ", pan: %1" ).arg( m_fPan ) )
			.append( QString( ", peak_l: %1" ).arg( __peak_l ) )
			.append( QString( ", peak_r: %1" ).arg( __peak_r ) )
			.append( QString( ", [%1" ).arg( __adsr->toQString( sPrefix + s, bShort ).replace( "\n", "]" ) ) )
			.append( QString( ", filter_active: %1" ).arg( __filter_active ) )
			.append( QString( ", filter_cutoff: %1" ).arg( __filter_cutoff ) )
			.append( QString( ", filter_resonance: %1" ).arg( __filter_resonance ) )
			.append( QString( ", random_pitch_factor: %1" ).arg( __random_pitch_factor ) )
			.append( QString( ", pitch_offset: %1" ).arg( __pitch_offset ) )
			.append( QString( ", midi_out_note: %1" ).arg( __midi_out_note ) )
			.append( QString( ", midi_out_channel: %1" ).arg( __midi_out_channel ) )
			.append( QString( ", stop_notes: %1" ).arg( __stop_notes ) )
			.append( QString( ", sample_selection_alg: %1" ).arg( __sample_selection_alg ) )
			.append( QString( ", active: %1" ).arg( __active ) )
			.append( QString( ", soloed: %1" ).arg( __soloed ) )
			.append( QString( ", muted: %1" ).arg( __muted ) )
			.append( QString( ", mute_group: %1" ).arg( __mute_group ) )
			.append( QString( ", queued: %1" ).arg( __queued ) ) ;
		sOutput.append( QString( ", fx_level: [ " ) );
		for ( auto ff : __fx_level ) {
			sOutput.append( QString( "%1 " ).arg( ff ) );
		}
		sOutput.append( QString( "]" ) )
			.append( QString( ", hihat_grp: %1" ).arg( __hihat_grp ) )
			.append( QString( ", lower_cc: %1" ).arg( __lower_cc ) )
			.append( QString( ", higher_cc: %1" ).arg( __higher_cc ) )
			.append( QString( ", is_preview_instrument: %1" ).arg( __is_preview_instrument ) )
			.append( QString( ", is_metronome_instrument: %1" ).arg( __is_metronome_instrument ) )
			.append( QString( ", apply_velocity: %1" ).arg( __apply_velocity ) )
			.append( QString( ", current_instr_for_export: %1" ).arg( __current_instr_for_export ) )
			.append( QString( ", m_bHasMissingSamples: %1" ).arg( m_bHasMissingSamples ) )
			.append( QString( ", components: [" ) );
		for ( auto cc : *__components ) {
			if ( cc != nullptr ) {
				sOutput.append( QString( " %1" ).arg( cc->get_drumkit_componentID() ) );
			}
		}
		sOutput.append(" ]\n");
	}
		
	return sOutput;
}

};

/* vim: set softtabstop=4 noexpandtab: */
