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

#pragma once

#include "CoreMinimal.h"
#include "RefinedRDApi.h"
#include "AssetRegistry/AssetRegistryModule.h"
#include "DataAssets/RRDADataAssetBase.h"
#include "DataAssets/RRDADirtDataAsset.h"
#include "Engine/AssetManager.h"
#include "Enums/RRDARPEnums.h"
#include "Resources/FGItemDescriptor.h"

#include "RRDADataAssetSubsystem.generated.h"

class IAssetRegistry;

UCLASS()
class REFINEDRDAPI_API URRDADataAssetSubsystem : public UWorldSubsystem
{
	GENERATED_BODY()

public:
	URRDADataAssetSubsystem();

	static URRDADataAssetSubsystem* Get(UObject* Context);
	static URRDADataAssetSubsystem* GetChecked(UObject* Context);

	/** Implement this for initialization of instances of the system */
	virtual void Initialize(FSubsystemCollectionBase& Collection) override;

	virtual void Deinitialize() override;

	/**
	 * Note: call this function only in the constructor of the subsystem OR if you change some mDisabled value in runtime to refresh cached data
	 */
	UFUNCTION(BlueprintCallable, Category = "RRDA|DataAsset")
	void StartScanForDataAssets();

	void ReCacheDirtDataAssets();
	void ReCacheTurbineDataAssets();
	void ReCacheBoilerDataAssets();
	void ReCacheCoolerDataAssets();
	void ReCacheHeaterDataAssets();

public:
	UFUNCTION(BlueprintPure, Category = "RRDA|DataAsset|FF")
	int32 GetAllDirtItems(TArray<TSubclassOf<UFGItemDescriptor>>& Items) const;
	
	UFUNCTION(BlueprintCallable, Category = "RRDA|DataAsset|FF")
	URRDADirtDataAsset* GetDataForDirtItem(TSubclassOf<UFGItemDescriptor> Item) const;

public:
	/**
	 * Find all data assets of a specific class
	 * @param OutDataAssets - Set of data assets
	 * @return true if found any data assets
	 */
	template<class T>
	bool FindAllDataAssetsOfClass(TSet<T*>& OutDataAssets);

private:
	UPROPERTY()
	TMap<TSubclassOf<UFGItemDescriptor>, class URRDADirtDataAsset*> mDirtAssets;
	
	TMap<int32, TMap<TSubclassOf<UFGItemDescriptor>, class URRDATurbineDataAsset*>> mTurbineAssets;
	TMap<int32, TMap<TSubclassOf<UFGItemDescriptor>, class URRDABoilerDataAsset*>> mBoilerAssets;
	TMap<ERRDACoolerType, TMap<TSubclassOf<UFGItemDescriptor>, class URRDACoolerDataAsset*>> mCoolerAssets;
	TMap<ERRDAHeaterType, TMap<TSubclassOf<UFGItemDescriptor>, class URRDAHeaterDataAsset*>> mHeaterAssets;

public:
	UPROPERTY(BlueprintReadOnly, Transient, Category = "RRDA|DataAsset")
	TSet<URRDADataAssetBase*> mDisabledDataAssets;

	UPROPERTY(BlueprintReadOnly, Transient, Category = "RRDA|DataAsset")
	TSet<URRDADataAssetBase*> mAllDataAssets;
};

template <class T>
bool URRDADataAssetSubsystem::FindAllDataAssetsOfClass(TSet<T*>& OutDataAssets)
{
	OutDataAssets.Empty();

	// This doesn't work the AssetDatas are always invalid
	/*UAssetManager& Manager = UAssetManager::Get();

	TArray<FAssetData> AssetDatas;
	Manager.GetPrimaryAssetDataList(FPrimaryAssetType("RRDADataAsset"), AssetDatas);

	for (FAssetData AssetData : AssetDatas)
	{
		if(AssetData.IsValid())
		{
			if(URRDADataAssetBase* Asset = Cast<URRDADataAssetBase>(AssetData.GetAsset()))
			{
				if(!URRDADataAssetBase::IsEnabled(Asset, GetWorld()))
				{
				UE_LOG(LogRRDApi, Error, TEXT("Asset Disabled: %s"), *AssetData.AssetName.ToString());
					continue;
				}
				
				OutDataAssets.Add(Cast<T>(Asset));
				UE_LOG(LogRRDApi, Log, TEXT("Found %s"), *AssetData.GetAsset()->GetPathName());
			}
		} else
		{
			UE_LOG(LogRRDApi, Error, TEXT("Invalid AssetData: %s"), *AssetData.AssetName.ToString());
			return false;
		}
	}*/

	TArray<UClass*> FoundClasses;
	GetDerivedClasses(T::StaticClass(), FoundClasses, true);

	for (UClass* FoundClass : FoundClasses)
	{
		if(FoundClass->IsNative()) continue;
		
		if(URRDADataAssetBase* Asset = FoundClass->GetDefaultObject<URRDADataAssetBase>())
		{
			if(!URRDADataAssetBase::IsEnabled(Asset, GetWorld()))
			{
				UE_LOG(LogRRDApi, Error, TEXT("Asset Disabled: %s"), *FoundClass->GetPathName());
				continue;
			}
			OutDataAssets.Add(FoundClass->GetDefaultObject<T>());
			UE_LOG(LogRRDApi, Log, TEXT("Found %s"), *FoundClass->GetPathName());
		}
	}

	return OutDataAssets.Num() > 0;
}