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


#include "Widgets/SkillListWidget.h"



void SSkillListWidget::Construct(const FArguments& InArgs)
{
	BagConfig = InArgs._BagConfig;
	OnSkillSelected = InArgs._OnSkillSelected;
	SelectedSkillIndex = -1;

	ChildSlot
	[
		SNew(SBox)
		.MinDesiredWidth(200.0f)
		.MinDesiredHeight(300.0f)
		[
			SAssignNew(SkillListView, SListView<TSharedPtr<int32>>)
			.ItemHeight(24.0f)
			.ListItemsSource(&SkillIndices)
			.OnGenerateRow(this, &SSkillListWidget::OnGenerateSkillRow)
			.OnSelectionChanged(this, &SSkillListWidget::OnSkillSelectionChanged)
		]
	];

	RefreshSkillList();
}

void SSkillListWidget::RefreshSkillList()
{
	SkillIndices.Empty();

	if (BagConfig.IsValid())
	{
		for (int32 i = 0; i < BagConfig->PlacedSkills.Num(); i++)
		{
			SkillIndices.Add(MakeShareable(new int32(i)));
		}
	}

	if (SkillListView.IsValid())
	{
		SkillListView->RequestListRefresh();
	}
}

TSharedRef<ITableRow> SSkillListWidget::OnGenerateSkillRow(TSharedPtr<int32> SkillIndex,
                                                           const TSharedRef<STableViewBase>& OwnerTable)
{
	return SNew(STableRow<TSharedPtr<int32>>, OwnerTable)
	   [
		   SNew(STextBlock)
		   .Text(this, &SSkillListWidget::GetSkillDisplayText, *SkillIndex)
	   ];
}

void SSkillListWidget::OnSkillSelectionChanged(TSharedPtr<int32> SelectedItem, ESelectInfo::Type SelectInfo)
{
	if (SelectedItem.IsValid())
	{
		SelectedSkillIndex = *SelectedItem;
		OnSkillSelected.ExecuteIfBound(SelectedSkillIndex);
	}
	else
	{
		SelectedSkillIndex = -1;
		OnSkillSelected.ExecuteIfBound(-1);
	}
}

FText SSkillListWidget::GetSkillDisplayText(int32 SkillIndex) const
{
	if (!BagConfig.IsValid() || SkillIndex < 0 || SkillIndex >= BagConfig->PlacedSkills.Num())
	{
		return FText::FromString(TEXT("Invalid Skill"));
	}

	const FPlacedSkillInfo& PlacedSkill = BagConfig->PlacedSkills[SkillIndex];
	if (!PlacedSkill.SkillAsset)
	{
		return FText::FromString(TEXT("Invalid Skill"));
	}
    
	return FText::FromString(FString::Printf(TEXT("%s at (%d,%d)"),
		*PlacedSkill.SkillAsset->SkillName.ToString(),
		PlacedSkill.PositionX,
		PlacedSkill.PositionY));
}