#pragma once

#include "HierarchyPanel.h"

#include "Rendering/Assets/BuiltInIcons.h"

#include "Composition/EditorPanelIds.h"
#include <XCEditor/Collections/UIEditorTreeView.h>
#include <XCEditor/Foundation/UIEditorTheme.h>

#include <algorithm>
#include <string_view>

namespace XCEngine::UI::Editor::App::HierarchyPanelInternal {

using ::XCEngine::UI::UIColor;
using ::XCEngine::UI::UIInputEvent;
using ::XCEngine::UI::UIPoint;
using ::XCEngine::UI::UIRect;
using Widgets::UIEditorTreeViewHitTarget;
using Widgets::UIEditorTreeViewHitTargetKind;
using Widgets::UIEditorTreeViewInvalidIndex;

inline constexpr float kDragThreshold = 4.0f;
inline constexpr UIColor kDragPreviewColor(0.92f, 0.92f, 0.92f, 0.42f);

bool ContainsPoint(const UIRect& rect, const UIPoint& point);
float ComputeSquaredDistance(const UIPoint& lhs, const UIPoint& rhs);
::XCEngine::UI::UITextureHandle ResolveGameObjectIcon(const BuiltInIcons* icons);
std::vector<UIInputEvent> FilterHierarchyInputEvents(
    const UIRect& bounds,
    const std::vector<UIInputEvent>& inputEvents,
    bool allowInteraction,
    bool panelActive,
    bool captureActive);
const Widgets::UIEditorTreeViewItem* ResolveHitItem(
    const Widgets::UIEditorTreeViewLayout& layout,
    const std::vector<Widgets::UIEditorTreeViewItem>& items,
    const UIPoint& point,
    UIEditorTreeViewHitTarget* hitTargetOutput = nullptr);
std::size_t FindVisibleIndexForItemId(
    const Widgets::UIEditorTreeViewLayout& layout,
    const std::vector<Widgets::UIEditorTreeViewItem>& items,
    std::string_view itemId);

} // namespace XCEngine::UI::Editor::App::HierarchyPanelInternal