/*

 * Copyright (c) 2024, Shannon Booth <shannon@serenityos.org>

 *

 * SPDX-License-Identifier: BSD-2-Clause

 */

#include <LibWeb/Bindings/Intrinsics.h>

#include <LibWeb/WebAudio/AudioNode.h>

#include <LibWeb/WebAudio/AudioParam.h>

#include <LibWeb/WebAudio/BaseAudioContext.h>

#include <LibWeb/WebAudio/GainNode.h>

namespace Web::WebAudio {

JS_DEFINE_ALLOCATOR(GainNode);

GainNode::~GainNode() = default;

WebIDL::ExceptionOr<JS::NonnullGCPtr<GainNode>> GainNode::create(JS::Realm& realm, JS::NonnullGCPtr<BaseAudioContext> context, GainOptions const& options)

{

    return construct_impl(realm, context, options);

}

// https://webaudio.github.io/web-audio-api/#dom-gainnode-gainnode

WebIDL::ExceptionOr<JS::NonnullGCPtr<GainNode>> GainNode::construct_impl(JS::Realm& realm, JS::NonnullGCPtr<BaseAudioContext> context, GainOptions const& options)

{

    // Create the node and allocate memory

    auto node = realm.vm().heap().allocate<GainNode>(realm, realm, context, options);

    // Default options for channel count and interpretation

    // https://webaudio.github.io/web-audio-api/#GainNode

    AudioNodeDefaultOptions default_options;

    default_options.channel_count_mode = Bindings::ChannelCountMode::Max;

    default_options.channel_interpretation = Bindings::ChannelInterpretation::Speakers;

    default_options.channel_count = 2;

    // FIXME: Set tail-time to no

    TRY(node->initialize_audio_node_options(options, default_options));

    return node;

}

GainNode::GainNode(JS::Realm& realm, JS::NonnullGCPtr<BaseAudioContext> context, GainOptions const& options)

    : AudioNode(realm, context)

    , m_gain(AudioParam::create(realm, options.gain, NumericLimits<float>::lowest(), NumericLimits<float>::max(), Bindings::AutomationRate::ARate))

{

}

void GainNode::initialize(JS::Realm& realm)

{

    Base::initialize(realm);

    WEB_SET_PROTOTYPE_FOR_INTERFACE(GainNode);

}

void GainNode::visit_edges(Cell::Visitor& visitor)

{

    Base::visit_edges(visitor);

    visitor.visit(m_gain);

}

}