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

#include "NpcScheduleAssetCustomization.h"

#include "DetailCategoryBuilder.h"
#include "DetailLayoutBuilder.h"
#include "DetailWidgetRow.h"

#include "NpcScheduleTimeline.h"
#include "ProjectEleri/Ai/NpcScheduleAsset.h"

#define LOCTEXT_NAMESPACE "NpcScheduleAssetCustomization"

TSharedRef<IDetailCustomization> FNpcScheduleAssetCustomization::MakeInstance() {
	return MakeShareable(new FNpcScheduleAssetCustomization());
}

void FNpcScheduleAssetCustomization::CustomizeDetails(IDetailLayoutBuilder& DetailBuilder) {
	// The asset being customized. The weak pointers the panel hands over are the whole reason the strip
	// holds one of its own rather than a raw pointer: an asset can be deleted while a tab showing it is
	// still open, and the strip has to draw an empty day rather than a dangling one.
	TArray<TWeakObjectPtr<UObject>> Objects;
	DetailBuilder.GetObjectsBeingCustomized(Objects);

	UNpcScheduleAsset* Schedule = Objects.Num() > 0 ? Cast<UNpcScheduleAsset>(Objects[0].Get()) : nullptr;

	// A category of this module's own, sorted after the one an asset's properties land in, so that the
	// strip is drawn under every row the asset already had rather than beside them. It is created even
	// when nothing is being customized, so that a panel left open on a deleted asset still has a strip
	// in it saying so.
	IDetailCategoryBuilder& TimelineCategory = DetailBuilder.EditCategory(
		TEXT("ScheduleTimeline"),
		LOCTEXT("TimelineCategoryLabel", "Day Timeline"),
		ECategoryPriority::Uncommon);

	// The whole row, name column and value column both, because the strip is a picture of the day and
	// not the value of anything: it is laid out against the width of the panel it is handed, and this
	// is the slot that hands it all of it.
	TimelineCategory.AddCustomRow(LOCTEXT("TimelineRowLabel", "Day Timeline"))
		.WholeRowContent()
		[
			SNew(SNpcScheduleTimeline)
			.Schedule(Schedule)
		];
}

#undef LOCTEXT_NAMESPACE