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

#pragma once

#include "CoreMinimal.h"
#include "UObject/NoExportTypes.h"
#include "CommonTypes.h"
#include "TangibleComponent.h"
#include "TangibleManager.generated.h"

UCLASS()
class INTEGRATION_API UTangibleManager : public UObject
{
	GENERATED_BODY()

public:
	// Import these types into our Namespace.
	using IdArray = CommonTypes::IdArray;
	using IdView = CommonTypes::IdView;

	// A pointer to our world.
	UPROPERTY()
	TWeakObjectPtr<UWorld> World;

	// A pointer to uclass TangibleActor.  This is the class
	// of actors that we create (for now).
	UPROPERTY()
	TSubclassOf<AActor> ClassTangibleActor;

	// Given a tangible ID, look up actor pointer (or NULL if actor was deleted)
	UPROPERTY()
	TMap<int64, AActor*> IdToActor;

	// Player's tangible Id.
	int64 Player;

	// Tangibles near the actor.
	IdView Near;

public:
	UTangibleManager();

	// Initialize the tangible manager.
	//
	void Init(UWorld *world, UClass* tanact);

	// Get a pointer to our world.
	// 
	UWorld* GetWorld() const override { return World.Get(); }

	// Get the tangible if it exists, otherwise return NULL
	UTangibleComponent* GetTangible(int64 id);

	// Get the tangible if it exists, otherwise create it.
	UTangibleComponent* MakeTangible(int64 id);

	// Delete the tangible.
	void DeleteTangible(int64 id);

	// Get/Set the Id of the actor.
	// 
	int64 GetPlayer() const { return Player; };
	void SetPlayer(int64 id) { Player = id; }

	// Get/Set the list of tangibles near the player, according to Luprex.
	//
	IdView GetNear() const { return Near; }
	void SetNear(IdView near) { Near = near; }

	// Get the Live list.
	//
	// Efficiency note: this makes a copy of the array.
	//
	IdArray GetLive();
};