// 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 "Buildables/FGBuildableFactory.h"
#include "DataAssets/RRDADataAssetBase.h"
#include "DataAssets/RRDADirtDataAsset.h"
#include "DataAssets/RRDABoilerDataAsset.h"
#include "DataAssets/RRDAGeneratorDataAsset.h"
#include "DataAssets/RRDAHeaterDataAsset.h"
#include "DataAssets/RRDATurbineDataAsset.h"
#include "DataAssets/RRDACoolerDataAsset.h"
#include "DataAssets/RRDADataAssetDSItemFilter.h"
#include "DataAssets/RRDADataAssetDSModAdapter.h"
#include "Enums/RRDARPEnums.h"
#include "Resources/FGItemDescriptor.h"

#include "RRDADataAssetSubsystem.generated.h"

// We need this otherwise some of the cache will GC'd
USTRUCT(BlueprintType)
struct FRRDADataHolderTurbineData
{
	GENERATED_BODY()

	UPROPERTY(BlueprintReadOnly)
	TMap<TSubclassOf<UFGItemDescriptor>, URRDATurbineDataAsset*> Data;
};

USTRUCT(BlueprintType)
struct FRRDADataHolderBoilerData
{
	GENERATED_BODY()

	UPROPERTY(BlueprintReadOnly)
	TMap<TSubclassOf<UFGItemDescriptor>, URRDABoilerDataAsset*> Data;
};

USTRUCT(BlueprintType)
struct FRRDADataHolderCoolerData
{
	GENERATED_BODY()

	UPROPERTY(BlueprintReadOnly)
	TMap<TSubclassOf<UFGItemDescriptor>, URRDACoolerDataAsset*> Data;
};

USTRUCT(BlueprintType)
struct FRRDADataHolderHeaterData
{
	GENERATED_BODY()

	UPROPERTY(BlueprintReadOnly)
	TMap<TSubclassOf<UFGItemDescriptor>, URRDAHeaterDataAsset*> Data;
};

USTRUCT(BlueprintType)
struct FRRDADataHolderDSBuildingData
{
	GENERATED_BODY()

	UPROPERTY()
	URRDADataAssetDSAdapterCovers* AdapterCovers;

	UPROPERTY()
	URRDADataAssetDSModAdapter* ModAdapter;

	UPROPERTY()
	TArray<URRDADataAssetDSItemFilter*> ItemFilters;
};

UCLASS()
class REFINEDRDAPI_API URRDADataAssetSubsystem : public UGameInstanceSubsystem
{
	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();
	void ReCacheGeneratorDataAssets();
	void ReCacheDSModAdapterDataAssets();
	void ReCacheDSAdapterCoversDataAssets();
	void ReCacheDSItemFilters();

public:
	// Dirt Functions
	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;

	UFUNCTION(BlueprintPure, Category = "RRDA|DataAsset|FF")
	TArray<URRDADirtDataAsset*> GetAllDirtAssets() const;

	// DS Mod Adapter Functions
	UFUNCTION(BlueprintPure, Category = "RRDA|DataAsset|DS")
	int32 GetAllDSBuildingClasses(TArray<TSubclassOf<AFGBuildableFactory>>& OutBuildingClasses) const;

	UFUNCTION(BlueprintCallable, Category = "RRDA|DataAsset|DS")
	URRDADataAssetDSModAdapter* GetModAdapterDataAssetForBuildingClass(TSubclassOf<AFGBuildableFactory> BuildingClass) const;

	UFUNCTION(BlueprintPure, Category = "RRDA|DataAsset|DS")
	TArray<URRDADataAssetDSModAdapter*> GetAllModAdapterDataAssets() const;

	UFUNCTION(BlueprintCallable, Category = "RRDA|DataAsset|DS")
	bool HasDSModAdapterForBuildingClass(TSubclassOf<AFGBuildableFactory> BuildingClass);

	// DS Adapter Covers Functions
	UFUNCTION(BlueprintCallable, Category = "RRDA|DataAsset|DS")
	URRDADataAssetDSAdapterCovers* GetDSAdapterCoverDataAssetForBuildingClass(TSubclassOf<AFGBuildableFactory> BuildingClass) const;

	UFUNCTION(BlueprintPure, Category = "RRDA|DataAsset|DS")
	TArray<URRDADataAssetDSAdapterCovers*> GetAllDSAdapterCoverDataAssets() const;

	UFUNCTION(BlueprintCallable, Category = "RRDA|DataAsset|DS")
	bool HasDSAdaperCoversForBuildingClass(TSubclassOf<AFGBuildableFactory> BuildingClass);

	// DS Item Filters

	UFUNCTION(BlueprintCallable, Category = "RRDA|DataAsset|DS")
	TArray<URRDADataAssetDSItemFilter*> GetDSItemFiltersDataAssetsForBuildingClass(TSubclassOf<AFGBuildableFactory> BuildingClass) const;

	UFUNCTION(BlueprintPure, Category = "RRDA|DataAsset|DS")
	TArray<URRDADataAssetDSItemFilter*> GetAllDSItemFiltersDataAssets() const;

	// Turbine Functions
	UFUNCTION(BlueprintPure, Category = "RRDA|DataAsset|RP|MP")
	bool GetAllTurbineItems(TArray<TSubclassOf<UFGItemDescriptor>>& Items, int32 Tier) const;

	UFUNCTION(BlueprintPure, Category = "RRDA|DataAsset|RP|MP")
	URRDATurbineDataAsset* GetTurbineItemData(TSubclassOf<UFGItemDescriptor> Item, int32 Tier) const;

	UFUNCTION(BlueprintPure, Category = "RRDA|DataAsset|RP|MP")
	bool GetAllTurbineRelevantItems(TArray<TSubclassOf<UFGItemDescriptor>>& Items, int32 Tier) const;

	UFUNCTION(BlueprintPure, Category = "RRDA|DataAsset|RP|MP")
	URRDATurbineDataAsset* GetDefaultTurbineAsset(int32 Tier) const;

	UFUNCTION(BlueprintPure, Category = "RRDA|DataAsset|RP|MP")
	TArray<URRDATurbineDataAsset*> GetAllTurbineAssets(int32 Tier) const;

	// Cooler Functions
	UFUNCTION(BlueprintPure, Category = "RRDA|DataAsset|RP|MP")
	bool GetAllCoolerItems(TArray<TSubclassOf<UFGItemDescriptor>>& Items, ERRDACoolerType Type) const;

	UFUNCTION(BlueprintPure, Category = "RRDA|DataAsset|RP|MP")
	URRDACoolerDataAsset* GetCoolerItemData(TSubclassOf<UFGItemDescriptor> Item, ERRDACoolerType Type) const;

	UFUNCTION(BlueprintPure, Category = "RRDA|DataAsset|RP|MP")
	URRDACoolerDataAsset* GetDefaultCoolerAsset(ERRDACoolerType Type) const;

	UFUNCTION(BlueprintPure, Category = "RRDA|DataAsset|RP|MP")
	TArray<URRDACoolerDataAsset*> GetAllCoolerAssets(ERRDACoolerType Type) const;

	// Generator Functions
	UFUNCTION(BlueprintPure, Category = "RRDA|DataAsset|RP|MP")
	URRDAGeneratorDataAsset* GetGeneratorItemData(int32 Tier) const;

	// Boiler Functions
	UFUNCTION(BlueprintPure, Category = "RRDA|DataAsset|RP|MP")
	bool GetAllBoilerItems(TArray<TSubclassOf<UFGItemDescriptor>>& Items, int32 Tier) const;

	UFUNCTION(BlueprintPure, Category = "RRDA|DataAsset|RP|MP")
	URRDABoilerDataAsset* GetBoilerItemData(TSubclassOf<UFGItemDescriptor> Item, int32 Tier) const;

	UFUNCTION(BlueprintPure, Category = "RRDA|DataAsset|RP|MP")
	bool GetAllBoilerRelevantItems(TArray<TSubclassOf<UFGItemDescriptor>>& Items, int32 Tier) const;

	UFUNCTION(BlueprintPure, Category = "RRDA|DataAsset|RP|MP")
	URRDABoilerDataAsset* GetDefaultBoilerAsset(int32 Tier) const;

	UFUNCTION(BlueprintPure, Category = "RRDA|DataAsset|RP|MP")
	TArray<URRDABoilerDataAsset*> GetAllBoilerAssets(int32 Tier) const;

	// Heater Functions
	UFUNCTION(BlueprintPure, Category = "RRDA|DataAsset|RP|MP")
	bool GetAllHeaterItems(TArray<TSubclassOf<UFGItemDescriptor>>& Items, ERRDAHeaterType Type) const;

	UFUNCTION(BlueprintPure, Category = "RRDA|DataAsset|RP|MP")
	URRDAHeaterDataAsset* GetHeaterItemData(TSubclassOf<UFGItemDescriptor> Item, ERRDAHeaterType Type) const;

	UFUNCTION(BlueprintPure, Category = "RRDA|DataAsset|RP|MP")
	bool GetAllHeaterRelevantItems(TArray<TSubclassOf<UFGItemDescriptor>>& Items, ERRDAHeaterType Type) const;

	UFUNCTION(BlueprintPure, Category = "RRDA|DataAsset|RP|MP")
	URRDAHeaterDataAsset* GetDefaultHeaterAsset(ERRDAHeaterType Type) const;

	UFUNCTION(BlueprintPure, Category = "RRDA|DataAsset|RP|MP")
	TArray<URRDAHeaterDataAsset*> GetAllHeaterAssets(ERRDAHeaterType Type) 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);

public:
	UPROPERTY(BlueprintReadOnly, Category = "RRDA|DataAsset")
	TMap<TSubclassOf<UFGItemDescriptor>, URRDADirtDataAsset*> mDirtAssets;

	UPROPERTY(BlueprintReadOnly, Category = "RRDA|DataAsset")
	TMap<TSubclassOf<AFGBuildableFactory>, FRRDADataHolderDSBuildingData> mDSBuildingData;

	UPROPERTY(BlueprintReadOnly, Category = "RRDA|DataAsset")
	TMap<int32, URRDAGeneratorDataAsset*> mGeneratorAssets;

	UPROPERTY(BlueprintReadOnly, Category = "RRDA|DataAsset")
	TMap<int32, FRRDADataHolderTurbineData> mTurbineAssets;

	UPROPERTY(BlueprintReadOnly, Category = "RRDA|DataAsset")
	TMap<int32, FRRDADataHolderBoilerData> mBoilerAssets;

	UPROPERTY(BlueprintReadOnly, Category = "RRDA|DataAsset")
	TMap<ERRDACoolerType, FRRDADataHolderCoolerData> mCoolerAssets;

	UPROPERTY(BlueprintReadOnly, Category = "RRDA|DataAsset")
	TMap<ERRDAHeaterType, FRRDADataHolderHeaterData> mHeaterAssets;

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

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

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

	// 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(T::StaticClass()->GetClassPathName(), AssetList, true);

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

		T* CastedAsset = Cast<T>(Obj);
		if (!CastedAsset) {
			UE_LOG(LogRRDApi, Warning, TEXT("Invalid asset type: %s"), *Asset.AssetName.ToString());
			continue;
		}

		if (URRDADataAssetBase* BaseAsset = Cast<URRDADataAssetBase>(Obj)) {
			if (URRDADataAssetBase::IsEnabled(BaseAsset, GetWorld())) {
				UE_LOG(LogRRDApi, Log, TEXT("Found %s"), *BaseAsset->GetPathName());
				OutDataAssets.Add(CastedAsset);
				mEnabledDataAssets.Add(BaseAsset);
				continue;
			}

			UE_LOG(LogRRDApi, Warning, TEXT("Asset Disabled: %s"), *BaseAsset->GetPathName());
			mDisabledDataAssets.Add(BaseAsset);
		}
	}

	UE_LOG(LogRRDApi, Warning, TEXT("Found %d of: %s"), OutDataAssets.Num(), *T::StaticClass()->GetPathName());
	return OutDataAssets.Num() > 0;
}