#include "Subsystems/RRDADataAssetSubsystem.h"

#include "RefinedRDApi.h"
#include "DataAssets/RRDADirtDataAsset.h"
#include "Engine/AssetManager.h"
#include "AssetRegistry/AssetRegistryModule.h"

URRDADataAssetSubsystem::URRDADataAssetSubsystem() {}

URRDADataAssetSubsystem* URRDADataAssetSubsystem::Get(UObject* Context) 
{
	if (IsValid(Context))
	{
		return Context->GetWorld()->GetSubsystem<URRDADataAssetSubsystem>();
	}
	return nullptr;
}

URRDADataAssetSubsystem* URRDADataAssetSubsystem::GetChecked(UObject* Context) 
{
	URRDADataAssetSubsystem* Subsystem = Get(Context);
	fgcheck(Subsystem);
	return Subsystem;
}

void URRDADataAssetSubsystem::Initialize(FSubsystemCollectionBase& Collection)
{
	Super::Initialize(Collection);

	FAssetRegistryModule& AssetRegistryModule = FModuleManager::LoadModuleChecked<FAssetRegistryModule>(FName("AssetRegistry"));
	IAssetRegistry& AssetRegistry = AssetRegistryModule.Get();
	// Must wait until all assets are discovered before populating list of assets.
	if (AssetRegistry.IsLoadingAssets()) {
		AssetRegistry.OnFilesLoaded().AddUObject(this, &URRDADataAssetSubsystem::StartScanForDataAssets);
	}
	else {
		StartScanForDataAssets();
	}

	
}

void URRDADataAssetSubsystem::Deinitialize()
{
	Super::Deinitialize();
}

void URRDADataAssetSubsystem::StartScanForDataAssets()
{
	/*UAssetManager& Manager = UAssetManager::Get();
	Manager.LoadPrimaryAssetsWithType(FPrimaryAssetType("RRDADataAsset"));*/

	// Find list of all UStat, and USkill assets in Content Browser.
	FAssetRegistryModule& AssetRegistryModule = FModuleManager::LoadModuleChecked<FAssetRegistryModule>(FName("AssetRegistry"));
	IAssetRegistry& AssetRegistry = AssetRegistryModule.Get();

	TArray<FAssetData> AssetList;
	AssetRegistry.GetAssetsByClass(FName("RRDADataAssetBase"), AssetList);

	// Split assets into separate arrays.
	for (const FAssetData& Asset : AssetList) {
		UObject* Obj = Asset.GetAsset();

		// Cast the Obj to other data asset classes
		if (Obj->GetClass()->IsChildOf(URRDADirtDataAsset::StaticClass())) {
			auto DirtDataAsset = Cast<URRDADirtDataAsset>(Obj);
			mDirtAssets.Add(DirtDataAsset->mItem, DirtDataAsset);
		}
	}
	
	mDisabledDataAssets.Empty();
	mAllDataAssets.Empty();

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

void URRDADataAssetSubsystem::ReCacheDirtDataAssets()
{
	mDirtAssets.Empty();
	TSet<URRDADirtDataAsset*> DirtDataAssets;
	if(FindAllDataAssetsOfClass(DirtDataAssets))
	{
		for (URRDADirtDataAsset* DirtDataAsset : DirtDataAssets)
		{
			mDirtAssets.Add(DirtDataAsset->mItem, DirtDataAsset);
		}
	}
	UE_LOG(LogRRDApi, Log, TEXT("ReCacheDirtDataAssets: %d"), mDirtAssets.Num());
}

void URRDADataAssetSubsystem::ReCacheTurbineDataAssets()
{
	UE_LOG(LogRRDApi, Log, TEXT("ReCacheTurbineDataAssets"));
}

void URRDADataAssetSubsystem::ReCacheBoilerDataAssets() {
	UE_LOG(LogRRDApi, Log, TEXT("ReCacheBoilerDataAssets"));
}

void URRDADataAssetSubsystem::ReCacheCoolerDataAssets() {
	UE_LOG(LogRRDApi, Log, TEXT("ReCacheCoolerDataAssets"));
}

void URRDADataAssetSubsystem::ReCacheHeaterDataAssets() {
	UE_LOG(LogRRDApi, Log, TEXT("ReCacheHeaterDataAssets"));
}

int32 URRDADataAssetSubsystem::GetAllDirtItems(TArray<TSubclassOf<UFGItemDescriptor>>& Items) const
{
	return mDirtAssets.GetKeys(Items);
}

URRDADirtDataAsset* URRDADataAssetSubsystem::GetDataForDirtItem(TSubclassOf<UFGItemDescriptor> Item) const
{
	if(!Item) return nullptr;
	return *mDirtAssets.Find(Item);
}