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

#pragma once

#include <zencore/zencore.h>
#include <filesystem>
#include <string>
#include <vector>

#ifndef ZEN_ENABLE_MESH
#	define ZEN_ENABLE_MESH 0
#endif

struct ZenUpstreamJupiterConfig
{
	std::string Name;
	std::string Url;
	std::string OAuthUrl;
	std::string OAuthClientId;
	std::string OAuthClientSecret;
	std::string OpenIdProvider;
	std::string AccessToken;
	std::string Namespace;
	std::string DdcNamespace;
};

struct ZenUpstreamHordeConfig
{
	std::string Name;
	std::string Url;
	std::string OAuthUrl;
	std::string OAuthClientId;
	std::string OAuthClientSecret;
	std::string OpenIdProvider;
	std::string AccessToken;

	std::string StorageUrl;
	std::string StorageOAuthUrl;
	std::string StorageOAuthClientId;
	std::string StorageOAuthClientSecret;
	std::string StorageOpenIdProvider;
	std::string StorageAccessToken;

	std::string Cluster;
	std::string Namespace;
};

struct ZenUpstreamZenConfig
{
	std::string				 Name;
	std::vector<std::string> Urls;
	std::vector<std::string> Dns;
};

enum class UpstreamCachePolicy : uint8_t
{
	Disabled  = 0,
	Read	  = 1 << 0,
	Write	  = 1 << 1,
	ReadWrite = Read | Write
};

struct ZenUpstreamCacheConfig
{
	ZenUpstreamJupiterConfig JupiterConfig;
	ZenUpstreamHordeConfig	 HordeConfig;
	ZenUpstreamZenConfig	 ZenConfig;
	int32_t					 UpstreamThreadCount		= 4;
	int32_t					 ConnectTimeoutMilliseconds = 5000;
	int32_t					 TimeoutMilliseconds		= 0;
	UpstreamCachePolicy		 CachePolicy				= UpstreamCachePolicy::ReadWrite;
};

struct ZenCacheEvictionPolicy
{
	uint64_t DiskSizeLimit		= ~uint64_t(0);
	uint64_t MemorySizeLimit	= 1024 * 1024 * 1024;
	int32_t	 MaxDurationSeconds = 24 * 60 * 60;
	bool	 Enabled			= true;
};

struct ZenCasEvictionPolicy
{
	uint64_t LargeStrategySizeLimit = ~uint64_t(0);
	uint64_t SmallStrategySizeLimit = ~uint64_t(0);
	uint64_t TinyStrategySizeLimit	= ~uint64_t(0);
	bool	 Enabled				= true;
};

struct ZenGcConfig
{
	ZenCasEvictionPolicy   Cas;
	ZenCacheEvictionPolicy Cache;
	int32_t				   MonitorIntervalSeconds = 30;
	int32_t				   IntervalSeconds		  = 0;
	bool				   CollectSmallObjects	  = true;
	bool				   Enabled				  = true;
	uint64_t			   DiskReserveSize		  = 1ul << 28;
};

struct ZenOpenIdProviderConfig
{
	std::string Name;
	std::string Url;
	std::string ClientId;
};

struct ZenAuthConfig
{
	std::vector<ZenOpenIdProviderConfig> OpenIdProviders;
};

struct ZenServerOptions
{
	ZenUpstreamCacheConfig UpstreamCacheConfig;
	ZenGcConfig			   GcConfig;
	ZenAuthConfig		   AuthConfig;
	std::filesystem::path  DataDir;						   // Root directory for state (used for testing)
	std::filesystem::path  ContentDir;					   // Root directory for serving frontend content (experimental)
	std::filesystem::path  AbsLogFile;					   // Absolute path to main log file
	std::filesystem::path  ConfigFile;					   // Path to Lua config file
	std::string			   ChildId;						   // Id assigned by parent process (used for lifetime management)
	std::string			   LogId;						   // Id for tagging log output
	std::string			   HttpServerClass;				   // Choice of HTTP server implementation
	std::string			   EncryptionKey;				   // 256 bit AES encryption key
	std::string			   EncryptionIV;				   // 128 bit AES initialization vector
	int					   BasePort				  = 1337;  // Service listen port (used for both UDP and TCP)
	int					   OwnerPid				  = 0;	   // Parent process id (zero for standalone)
	int					   WebSocketPort		  = 0;	   // Web socket port (Zero = disabled)
	int					   WebSocketThreads		  = 0;
	bool				   InstallService		  = false;	// Flag used to initiate service install (temporary)
	bool				   UninstallService		  = false;	// Flag used to initiate service uninstall (temporary)
	bool				   IsDebug				  = false;
	bool				   IsTest				  = false;
	bool				   IsDedicated			  = false;	// Indicates a dedicated/shared instance, with larger resource requirements
	bool				   StructuredCacheEnabled = true;
	bool				   ExecServiceEnabled	  = true;
	bool				   ComputeServiceEnabled  = true;
	bool				   ShouldCrash			  = false;	// Option for testing crash handling
	bool				   IsFirstRun			  = false;
	bool				   NoSentry				  = false;
#if ZEN_WITH_TRACE
	std::string TraceHost;	// Host name or IP address to send trace data to
	std::string TraceFile;	// Path of a file to write a trace
#endif
#if ZEN_ENABLE_MESH
	bool MeshEnabled = false;  // Experimental p2p mesh discovery
#endif
};

void ParseCliOptions(int argc, char* argv[], ZenServerOptions& ServerOptions);