// Fill out your copyright notice in the Description page of Project Settings.


#include "SPluginHostChannelInterface.h"

#include "SChannelNode.h"
#include "SlateOptMacros.h"
#include "SScrollBox.h"
#include "SSpacer.h"
#include "STextBlock.h"
#include "AudioBuffer/ChannelInterface.h"
#include "PluginHost/PluginHost.h"
#include "Widgets/SBoxPanel.h"

BEGIN_SLATE_FUNCTION_BUILD_OPTIMIZATION

void SPluginHostChannelInterface::Construct(const FArguments& InArgs, FPluginHost* InPluginHost)
{
	PluginHost = InPluginHost;
	const FChannelInterface* ChannelInterface = PluginHost->ChannelInterface;

	InPluginHost->UpdateChannelNodeName();
	
	const auto& InputNodes = ChannelInterface->InputChannelNodes;
	const auto& OutputNodes = ChannelInterface->OutputChannelNodes;

	TSharedPtr<SVerticalBox> InputNodesBox;
	TSharedPtr<SVerticalBox> OutputNodesBox;
	ChildSlot
	[
		SNew(SScrollBox)
		+SScrollBox::Slot()
		.AutoSize()
		[
			SNew(STextBlock)
			.Text(FText::FromString("Input: "))
		]
		+SScrollBox::Slot()
		.AutoSize()
		[
			SAssignNew(InputNodesBox, SVerticalBox)
		]
		+SScrollBox::Slot()
		.AutoSize()
		[
			SNew(SSpacer)
			.Size(FVector2D(1, 3))
		]
		+SScrollBox::Slot()
		.AutoSize()
		[
			SNew(STextBlock)
			.Text(FText::FromString("Output: "))
		]
		+SScrollBox::Slot()
		.AutoSize()
		[
			SAssignNew(OutputNodesBox, SVerticalBox)
		]
	];


	if (InputNodes.Num() > 0)
	{
		const TSharedRef<SChannelNode> DefaultInputNodeWidget = BuildChannelNode(InputNodes[0], SChannelNode::EChannelNodeType::InputNode, 0).ToSharedRef();
		DefaultInputNodeWidget->SetEnabled(false);
		InputNodesBox->AddSlot()
		[
			DefaultInputNodeWidget
		];
	}
	for (int32 i = 1; i < InputNodes.Num(); ++i)
	{
		InputNodesBox->AddSlot()
		[
			BuildChannelNode(InputNodes[i], SChannelNode::EChannelNodeType::InputNode, i * 2).ToSharedRef()
		];
	}

	if (OutputNodes.Num() > 0)
	{
		TSharedRef<SChannelNode> DefaultOutputNodeWidget = BuildChannelNode(OutputNodes[0], SChannelNode::EChannelNodeType::OutputNode, 0).ToSharedRef();
		DefaultOutputNodeWidget->SetEnabled(false);
		OutputNodesBox->AddSlot()
		[
			DefaultOutputNodeWidget
		];
	}
	for (int32 i = 1; i < OutputNodes.Num(); ++i)
	{
		OutputNodesBox->AddSlot()
		[
			BuildChannelNode(OutputNodes[i], SChannelNode::EChannelNodeType::OutputNode, i * 2).ToSharedRef()
		];
	}
}

TSharedPtr<SChannelNode> SPluginHostChannelInterface::BuildChannelNode(FChannelNode* ChannelNode, SChannelNode::EChannelNodeType ChannelNodeType, int32 NodeNameIndex)
{
	return SNew(SChannelNode, ChannelNode, PluginHost->ChannelInterface, NodeNameIndex)
	.ChannelNodeType(ChannelNodeType);
}

END_SLATE_FUNCTION_BUILD_OPTIMIZATION