// Copyright Epic Games, Inc. All Rights Reserved.

#include "OnlineSubsystemEOSPlusModule.h"
#include "OnlineSubsystemModule.h"
#include "OnlineSubsystemNames.h"
#include "OnlineSubsystemEOSPlus.h"

#include "Features/IModularFeature.h"
#include "Features/IModularFeatures.h"
#include "Misc/ConfigCacheIni.h"

#define LOCTEXT_NAMESPACE "EOSPlus"

IMPLEMENT_MODULE(FOnlineSubsystemEOSPlusModule, OnlineSubsystemEOSPlus);

/**
 * Class responsible for creating instance(s) of the subsystem
 */
class FOnlineFactoryEOSPlus :
	public IOnlineFactory
{
public:

	FOnlineFactoryEOSPlus() {}
	virtual ~FOnlineFactoryEOSPlus() {}

	virtual IOnlineSubsystemPtr CreateSubsystem(FName InstanceName)
	{
		FOnlineSubsystemEOSPlusPtr OnlineSub = MakeShared<FOnlineSubsystemEOSPlus, ESPMode::ThreadSafe>(InstanceName);
		if (!OnlineSub->Init())
		{
			UE_LOG_ONLINE(Warning, TEXT("EOSPlus failed to initialize!"));
			OnlineSub->Shutdown();
			OnlineSub = nullptr;
		}

		return OnlineSub;
	}
};

void FOnlineSubsystemEOSPlusModule::StartupModule()
{
	bool bDisableDeprecationWarning = false;
	GConfig->GetBool(TEXT("OnlineSubsystemEOSPlus"), TEXT("bDisableDeprecationWarning"), bDisableDeprecationWarning, GEngineIni);
	if (!bDisableDeprecationWarning)
	{
		UE_LOG_ONLINE(Warning, TEXT("[%hs] OnlineSubsystemEOSPlus is deprecated, please use OnlineSubsystemEOS for EOSSDK functionality."), __FUNCTION__);
	}

	if (IsRunningCommandlet())
	{
		return;
	}

	// Force loading of the EOS OSS module in case the plugin manager failed to get the dependencies right
	FModuleManager::LoadModuleChecked<FOnlineSubsystemModule>(TEXT("OnlineSubsystemEOS"));
	// Make sure the base OSS has a chance to register its OSS factory
	LoadBaseOSS();

	PlusFactory = MakeUnique<FOnlineFactoryEOSPlus>();

	// Create and register our singleton factory with the main online subsystem for easy access
	FOnlineSubsystemModule& OSS = FModuleManager::GetModuleChecked<FOnlineSubsystemModule>("OnlineSubsystem");
	OSS.RegisterPlatformService(EOSPLUS_SUBSYSTEM, PlusFactory.Get());
}

void FOnlineSubsystemEOSPlusModule::ShutdownModule()
{
	if (IsRunningCommandlet())
	{
		return;
	}

	FOnlineSubsystemModule& OSS = FModuleManager::GetModuleChecked<FOnlineSubsystemModule>("OnlineSubsystem");
	OSS.UnregisterPlatformService(EOSPLUS_SUBSYSTEM);

	PlusFactory.Reset();
}

void FOnlineSubsystemEOSPlusModule::LoadBaseOSS()
{
	FString BaseOSSName;
	GConfig->GetString(TEXT("[OnlineSubsystemEOSPlus]"), TEXT("BaseOSSName"), BaseOSSName, GEngineIni);
	if (BaseOSSName.IsEmpty())
	{
		// Load the native platform OSS name
		GConfig->GetString(TEXT("OnlineSubsystem"), TEXT("NativePlatformService"), BaseOSSName, GEngineIni);
	}
	if (BaseOSSName.IsEmpty())
	{
		UE_LOG_ONLINE(Verbose, TEXT("EOSPlus failed to find the native OSS!"));
		return;
	}
	// Load the module for the base OSS
	FString ModuleName(TEXT("OnlineSubsystem") + BaseOSSName);
	FModuleManager::LoadModuleChecked<FOnlineSubsystemModule>(*ModuleName);
}

#undef LOCTEXT_NAMESPACE