// Copyright IHY. Vertical Partition Streaming plugin.
//
// The authoring volume. Drop one around the whole playable spiral, tune the
// settings, and press Build. Bounds come from a UBoxComponent so they are trivial
// to read at both editor and runtime (no BSP brush).
#pragma once

#include "CoreMinimal.h"
#include "GameFramework/Actor.h"
#include "VerticalPartitionTypes.h"
#include "VerticalPartitionVolume.generated.h"

class UBoxComponent;
class UVerticalPartitionDescriptor;
class AVerticalPartitionVolume;

/**
 * Decouples the runtime volume from the editor-only builder. The editor module
 * installs Handler in StartupModule; the volume's CallInEditor buttons and the
 * vp.* build console commands route through it. Lives in the runtime module so the
 * volume can reference it, but is only ever populated in editor builds.
 */
struct VERTICALPARTITION_API FVerticalPartitionEditorBridge
{
#if WITH_EDITOR
	static TFunction<void(AVerticalPartitionVolume*, EVerticalPartitionAction)> Handler;
	static void Execute(AVerticalPartitionVolume* Volume, EVerticalPartitionAction Action)
	{
		if (Handler) { Handler(Volume, Action); }
	}
#endif
};

UCLASS(HideCategories=(Collision, Physics, Navigation, HLOD, Input, Replication))
class VERTICALPARTITION_API AVerticalPartitionVolume : public AActor
{
	GENERATED_BODY()

public:
	AVerticalPartitionVolume();

	/** Box that defines the bounded playable region to partition. */
	UPROPERTY(VisibleAnywhere, BlueprintReadOnly, Category="VerticalPartition")
	TObjectPtr<UBoxComponent> Box;

	/** Per-volume settings (seeded from project defaults on placement). */
	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category="VerticalPartition", meta=(ShowOnlyInnerProperties))
	FVerticalPartitionSettings Settings;

	/** Descriptor produced by Build; consumed by the runtime manager. */
	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category="VerticalPartition")
	TSoftObjectPtr<UVerticalPartitionDescriptor> Descriptor;

	/** World-space bounds of the volume (box transform * extent). */
	UFUNCTION(BlueprintPure, Category="VerticalPartition")
	FBox GetVolumeBounds() const;

	virtual void OnConstruction(const FTransform& Transform) override;

#if WITH_EDITOR
	// ---- Detail-panel buttons (mirror the editor tool window) ----
	UFUNCTION(CallInEditor, Category="Vertical Partition|1 - Analyze")
	void AnalyzeCurrentLevel();
	UFUNCTION(CallInEditor, Category="Vertical Partition|2 - Build")
	void BuildVerticalPartition();
	UFUNCTION(CallInEditor, Category="Vertical Partition|2 - Build")
	void RebuildChangedCells();
	UFUNCTION(CallInEditor, Category="Vertical Partition|2 - Build")
	void RebuildHLOD();
	UFUNCTION(CallInEditor, Category="Vertical Partition|3 - Validate")
	void ValidateCells();
	UFUNCTION(CallInEditor, Category="Vertical Partition|3 - Validate")
	void PreviewChunks();
	UFUNCTION(CallInEditor, Category="Vertical Partition|3 - Validate")
	void SpawnHLODPreview();
	UFUNCTION(CallInEditor, Category="Vertical Partition|3 - Validate")
	void ClearPreview();
	UFUNCTION(CallInEditor, Category="Vertical Partition|4 - Commit")
	void CommitConversion();
	UFUNCTION(CallInEditor, Category="Vertical Partition|4 - Commit")
	void RestoreFromBackup();
	UFUNCTION(CallInEditor, Category="Vertical Partition|5 - Maintenance")
	void ClearGeneratedData();
	UFUNCTION(CallInEditor, Category="Vertical Partition|5 - Maintenance")
	void DumpReport();

	virtual void PostEditChangeProperty(FPropertyChangedEvent& PropertyChangedEvent) override;
#endif
};