//=============================================================================//
//
// Purpose: Script VM
//
//=============================================================================//
#include "core/stdafx.h"
#include "tier0/frametask.h"
#include "tier1/cvar.h"
#include "squirrel/sqapi.h"
#include "squirrel/sqinit.h"
#include "squirrel/sqscript.h"

//---------------------------------------------------------------------------------
// Purpose: registers global constant for target context
// Input  : *v - 
//			*name - 
//			value - 
//---------------------------------------------------------------------------------
SQRESULT Script_RegisterConstant(CSquirrelVM* s, const SQChar* name, SQInteger value)
{
	return v_Script_RegisterConstant(s, name, value);
}

//---------------------------------------------------------------------------------
// Purpose: registers and exposes code functions to target context
// Input  : *s - 
//			*scriptname - 
//			*nativename - 
//			*helpstring - 
//			*returntype - 
//			*arguments - 
//			*functor - 
//---------------------------------------------------------------------------------
SQRESULT Script_RegisterFunction(CSquirrelVM* s, const SQChar* scriptname, const SQChar* nativename, 
	const SQChar* helpstring, const SQChar* returntype, const SQChar* parameters, void* functor)
{
	ScriptFunctionBinding_t* binding = MemAllocSingleton()->Alloc<ScriptFunctionBinding_t>(sizeof(ScriptFunctionBinding_t));
	memset(binding, '\0', sizeof(ScriptFunctionBinding_t));

	binding->_scriptname = scriptname;
	binding->_nativename = nativename;
	binding->_helpstring = helpstring;
	binding->_returntype = returntype;
	binding->_parameters = parameters;
	binding->_functor = functor;
	binding->_nparamscheck = 5;

	SQRESULT results = v_Script_RegisterFunction(s, binding, 1);
	MemAllocSingleton()->Free<ScriptFunctionBinding_t>(binding);

	return results;
}

#ifndef CLIENT_DLL
//---------------------------------------------------------------------------------
// Purpose: registers script functions in SERVER context
// Input  : *s - 
//---------------------------------------------------------------------------------
void Script_RegisterServerFunctions(CSquirrelVM* s)
{
	Script_RegisterFunction(s, "SDKNativeTest", "Script_SDKNativeTest", "Native SERVER test function", "void", "", &VSquirrel::SHARED::SDKNativeTest);
	Script_RegisterFunction(s, "GetSDKVersion", "Script_GetSDKVersion", "Gets the SDK version as a string", "string", "", &VSquirrel::SHARED::GetSDKVersion);

	Script_RegisterFunction(s, "GetNumHumanPlayers", "Script_GetNumHumanPlayers", "Gets the number of human players on the server", "int", "", &VSquirrel::SERVER::GetNumHumanPlayers);
	Script_RegisterFunction(s, "GetNumFakeClients", "Script_GetNumFakeClients", "Gets the number of bot players on the server", "int", "", &VSquirrel::SERVER::GetNumFakeClients);

	Script_RegisterFunction(s, "GetAvailableMaps", "Script_GetAvailableMaps", "Gets an array of all available maps", "array< string >", "", &VSquirrel::SHARED::GetAvailableMaps);
	Script_RegisterFunction(s, "GetAvailablePlaylists", "Script_GetAvailablePlaylists", "Gets an array of all available playlists", "array< string >", "", &VSquirrel::SHARED::GetAvailablePlaylists);

	Script_RegisterFunction(s, "KickPlayerByName", "Script_KickPlayerByName", "Kicks a player from the server by name", "void", "string", &VSquirrel::SHARED::KickPlayerByName);
	Script_RegisterFunction(s, "KickPlayerById", "Script_KickPlayerById", "Kicks a player from the server by handle or nucleus id", "void", "string", &VSquirrel::SHARED::KickPlayerById);

	Script_RegisterFunction(s, "BanPlayerByName", "Script_BanPlayerByName", "Bans a player from the server by name", "void", "string", &VSquirrel::SHARED::BanPlayerByName);
	Script_RegisterFunction(s, "BanPlayerById", "Script_BanPlayerById", "Bans a player from the server by handle or nucleus id", "void", "string", &VSquirrel::SHARED::BanPlayerById);

	Script_RegisterFunction(s, "UnbanPlayer", "Script_UnbanPlayer", "Unbans a player from the server by nucleus id or ip address", "void", "string", &VSquirrel::SHARED::UnbanPlayer);

	Script_RegisterFunction(s, "ShutdownHostGame", "Script_ShutdownHostGame", "Shuts the local host game down", "void", "", &VSquirrel::SHARED::ShutdownHostGame);

	Script_RegisterFunction(s, "IsDedicated", "Script_IsDedicated", "Returns whether this is a dedicated server", "bool", "", &VSquirrel::SERVER::IsDedicated);
}
#endif // !CLIENT_DLL

#ifndef DEDICATED
//---------------------------------------------------------------------------------
// Purpose: registers script functions in CLIENT context
// Input  : *s - 
//---------------------------------------------------------------------------------
void Script_RegisterClientFunctions(CSquirrelVM* s)
{
	Script_RegisterFunction(s, "SDKNativeTest", "Script_SDKNativeTest", "Native CLIENT test function", "void", "", &VSquirrel::SHARED::SDKNativeTest);
	Script_RegisterFunction(s, "GetSDKVersion", "Script_GetSDKVersion", "Gets the SDK version as a string", "string", "", &VSquirrel::SHARED::GetSDKVersion);

	Script_RegisterFunction(s, "GetAvailableMaps", "Script_GetAvailableMaps", "Gets an array of all available maps", "array< string >", "", &VSquirrel::SHARED::GetAvailableMaps);
	Script_RegisterFunction(s, "GetAvailablePlaylists", "Script_GetAvailablePlaylists", "Gets an array of all available playlists", "array< string >", "", &VSquirrel::SHARED::GetAvailablePlaylists);

	Script_RegisterFunction(s, "ShutdownHostGame", "Script_ShutdownHostGame", "Shuts the local host game down", "void", "", &VSquirrel::SHARED::ShutdownHostGame);
}

//---------------------------------------------------------------------------------
// Purpose: registers script functions in UI context
// Input  : *s - 
//---------------------------------------------------------------------------------
void Script_RegisterUIFunctions(CSquirrelVM* s)
{
	Script_RegisterFunction(s, "SDKNativeTest", "Script_SDKNativeTest", "Native UI test function", "void", "", &VSquirrel::SHARED::SDKNativeTest);
	Script_RegisterFunction(s, "GetSDKVersion", "Script_GetSDKVersion", "Gets the SDK version as a string", "string", "", &VSquirrel::SHARED::GetSDKVersion);

	Script_RegisterFunction(s, "RefreshServerList", "Script_RefreshServerList", "Refreshes the public server list and returns the count", "int", "", &VSquirrel::UI::RefreshServerCount);

	// Functions for retrieving server browser data
	Script_RegisterFunction(s, "GetServerName", "Script_GetServerName", "Gets the name of the server at the specified index of the server list", "string", "int", &VSquirrel::UI::GetServerName);
	Script_RegisterFunction(s, "GetServerDescription", "Script_GetServerDescription", "Gets the description of the server at the specified index of the server list", "string", "int", &VSquirrel::UI::GetServerDescription);
	Script_RegisterFunction(s, "GetServerMap", "Script_GetServerMap", "Gets the map of the server at the specified index of the server list", "string", "int", &VSquirrel::UI::GetServerMap);
	Script_RegisterFunction(s, "GetServerPlaylist", "Script_GetServerPlaylist", "Gets the playlist of the server at the specified index of the server list", "string", "int", &VSquirrel::UI::GetServerPlaylist);
	Script_RegisterFunction(s, "GetServerCurrentPlayers", "Script_GetServerCurrentPlayers", "Gets the current player count of the server at the specified index of the server list", "int", "int", &VSquirrel::UI::GetServerCurrentPlayers);
	Script_RegisterFunction(s, "GetServerMaxPlayers", "Script_GetServerMaxPlayers", "Gets the max player count of the server at the specified index of the server list", "int", "int", &VSquirrel::UI::GetServerMaxPlayers);
	Script_RegisterFunction(s, "GetServerCount", "Script_GetServerCount", "Gets the number of public servers", "int", "", &VSquirrel::UI::GetServerCount);

	// Misc main menu functions
	Script_RegisterFunction(s, "GetPromoData", "Script_GetPromoData", "Gets promo data for specified slot type", "string", "int", &VSquirrel::UI::GetPromoData);

	// Functions for connecting to servers
	Script_RegisterFunction(s, "CreateServer", "Script_CreateServer", "Starts server with the specified settings", "void", "string, string, string, string, int", &VSquirrel::UI::CreateServer);
	Script_RegisterFunction(s, "ConnectToServer", "Script_ConnectToServer", "Joins server by ip address and encryption key", "void", "string, string", &VSquirrel::UI::ConnectToServer);
	Script_RegisterFunction(s, "ConnectToListedServer", "Script_ConnectToListedServer", "Joins listed server by index", "void", "int", &VSquirrel::UI::ConnectToListedServer);
	Script_RegisterFunction(s, "ConnectToHiddenServer", "Script_ConnectToHiddenServer", "Joins hidden server by token", "void", "string", &VSquirrel::UI::ConnectToHiddenServer);

	Script_RegisterFunction(s, "GetHiddenServerName", "Script_GetHiddenServerName", "Gets hidden server name by token", "string", "string", &VSquirrel::UI::GetHiddenServerName);
	Script_RegisterFunction(s, "GetAvailableMaps", "Script_GetAvailableMaps", "Gets an array of all available maps", "array< string >", "", &VSquirrel::SHARED::GetAvailableMaps);
	Script_RegisterFunction(s, "GetAvailablePlaylists", "Script_GetAvailablePlaylists", "Gets an array of all available playlists", "array< string >", "", &VSquirrel::SHARED::GetAvailablePlaylists);
#ifndef CLIENT_DLL
	Script_RegisterFunction(s, "KickPlayerByName", "Script_KickPlayerByName", "Kicks a player from the server by name", "void", "string", &VSquirrel::SHARED::KickPlayerByName);
	Script_RegisterFunction(s, "KickPlayerById", "Script_KickPlayerById", "Kicks a player from the server by handle or nucleus id", "void", "string", &VSquirrel::SHARED::KickPlayerById);

	Script_RegisterFunction(s, "BanPlayerByName", "Script_BanPlayerByName", "Bans a player from the server by name", "void", "string", &VSquirrel::SHARED::BanPlayerByName);
	Script_RegisterFunction(s, "BanPlayerById", "Script_BanPlayerById", "Bans a player from the server by handle or nucleus id", "void", "string", &VSquirrel::SHARED::BanPlayerById);

	Script_RegisterFunction(s, "UnbanPlayer", "Script_UnbanPlayer", "Unbans a player from the server by nucleus id or ip address", "void", "string", &VSquirrel::SHARED::UnbanPlayer);
#endif // !CLIENT_DLL
	Script_RegisterFunction(s, "ShutdownHostGame", "Script_ShutdownHostGame", "Shuts the local host game down", "void", "", &VSquirrel::SHARED::ShutdownHostGame);
	Script_RegisterFunction(s, "IsClientDLL", "Script_IsClientDLL", "Returns whether this build is client only", "bool", "", &VSquirrel::SHARED::IsClientDLL);
}

//---------------------------------------------------------------------------------
// Purpose: Initialize all CLIENT/UI global structs and register SDK (CLIENT/UI) script functions
// Input  : *v - 
//			context - (1 = CLIENT 2 = UI)
//---------------------------------------------------------------------------------
SQRESULT Script_InitializeCLGlobalStructs(HSQUIRRELVM v, SQCONTEXT context)
{
	SQRESULT results = v_Script_InitializeCLGlobalStructs(v, context);

	if (context == SQCONTEXT::CLIENT)
		Script_RegisterClientFunctions(g_pClientScript.GetValue<CSquirrelVM*>());
	if (context == SQCONTEXT::UI)
		Script_RegisterUIFunctions(g_pUIScript.GetValue<CSquirrelVM*>());
	return results;
}
#endif // !DEDICATED

#ifndef CLIENT_DLL
//---------------------------------------------------------------------------------
// Purpose: Initialize all SERVER global structs and register SDK (SERVER) script functions
// Input  : *v - 
//---------------------------------------------------------------------------------
void Script_InitializeSVGlobalStructs(HSQUIRRELVM v)
{
	v_Script_InitializeSVGlobalStructs(v);
	Script_RegisterServerFunctions(Script_GetScriptHandle(SQCONTEXT::SERVER));
}

//---------------------------------------------------------------------------------
// Purpose: Creates the SERVER Squirrel VM
// Output : True on success, false on failure
//---------------------------------------------------------------------------------
SQBool Script_CreateServerVM()
{
	SQBool results = v_Script_CreateServerVM();
	if (results)
		DevMsg(eDLL_T::SERVER, "Created SERVER VM: '0x%p'\n", Script_GetScriptHandle(SQCONTEXT::SERVER));
	else
		Error(eDLL_T::SERVER, EXIT_FAILURE, "Failed to create SERVER VM\n");
	return results;
}
#endif // !CLIENT_DLL

#ifndef DEDICATED
//---------------------------------------------------------------------------------
// Purpose: Creates the CLIENT Squirrel VM
// Input  : *hlClient - 
// Output : True on success, false on failure
//---------------------------------------------------------------------------------
SQBool Script_CreateClientVM(CHLClient* hlclient)
{
	SQBool results = v_Script_CreateClientVM(hlclient);
	if (results)
		DevMsg(eDLL_T::CLIENT, "Created CLIENT VM: '0x%p'\n", Script_GetScriptHandle(SQCONTEXT::CLIENT));
	else
		Error(eDLL_T::CLIENT, EXIT_FAILURE, "Failed to create CLIENT VM\n");
	return results;
}

//---------------------------------------------------------------------------------
// Purpose: Creates the UI Squirrel VM
// Output : True on success, false on failure
//---------------------------------------------------------------------------------
SQBool Script_CreateUIVM()
{
	SQBool results = v_Script_CreateUIVM();
	if (results)
		DevMsg(eDLL_T::UI, "Created UI VM: '0x%p'\n", Script_GetScriptHandle(SQCONTEXT::UI));
	else
		Error(eDLL_T::UI, EXIT_FAILURE, "Failed to create UI VM\n");
	return results;
}
#endif // !DEDICATED

//---------------------------------------------------------------------------------
// Purpose: Returns the script VM pointer by context
// Input  : context - 
// Output : SQVM* 
//---------------------------------------------------------------------------------
CSquirrelVM* Script_GetScriptHandle(const SQCONTEXT context)
{
	switch (context)
	{
#ifndef CLIENT_DLL
	case SQCONTEXT::SERVER:
		return g_pServerScript.GetValue<CSquirrelVM*>();
#endif // !CLIENT_DLL
#ifndef DEDICATED
	case SQCONTEXT::CLIENT:
		return g_pClientScript.GetValue<CSquirrelVM*>();
	case SQCONTEXT::UI:
		return g_pUIScript.GetValue<CSquirrelVM*>();
#endif // !DEDICATED
	default:
		return nullptr;
	}
}

//---------------------------------------------------------------------------------
// Purpose: destroys the signal entry list head
// Input  : *s - 
//			v - 
//			f - 
// Output : true on success, false otherwise
//---------------------------------------------------------------------------------
SQBool Script_DestroySignalEntryListHead(CSquirrelVM* s, HSQUIRRELVM v, SQFloat f)
{
	SQBool result = v_Script_DestroySignalEntryListHead(s, v, f);
	Script_RegisterConstant(s, "DEVELOPER", developer->GetInt());
	return result;
}

//---------------------------------------------------------------------------------
// Purpose: prints the global include file the compiler loads for loading scripts
// Input  : *szRsonName - 
//---------------------------------------------------------------------------------
SQInteger Script_LoadRson(const SQChar* rsonfile)
{
	DevMsg(eDLL_T::ENGINE, "Loading RSON: '%s'\n", rsonfile);
	return v_Script_LoadRson(rsonfile);
}

//---------------------------------------------------------------------------------
// Purpose: prints the scripts the compiler loads from global include to be compiled
// Input  : *v - 
//			*path - 
//			*name - 
//			flags - 
//---------------------------------------------------------------------------------
SQBool Script_LoadScript(HSQUIRRELVM v, const SQChar* path, const SQChar* name, SQInteger flags)
{
	///////////////////////////////////////////////////////////////////////////////
	return v_Script_LoadScript(v, path, name, flags);
}

//---------------------------------------------------------------------------------
// Purpose: Compiles and executes input code on target VM by context
// Input  : *code - 
//			context - 
//---------------------------------------------------------------------------------
void Script_Execute(const SQChar* code, const SQCONTEXT context)
{
	if (!ThreadInMainThread())
	{
		const string scode(code);
		g_TaskScheduler->Dispatch([scode, context]()
			{
				Script_Execute(scode.c_str(), context);
			}, 0);

		return; // Only run in main thread.
	}

	CSquirrelVM* s = Script_GetScriptHandle(context);
	if (!s)
	{
		Error(eDLL_T::ENGINE, NO_ERROR, "Attempted to run %s script with no handle to VM\n", SQVM_GetContextName(context));
		return;
	}

	HSQUIRRELVM v = s->GetVM();
	if (!v)
	{
		Error(eDLL_T::ENGINE, NO_ERROR, "Attempted to run %s script while VM isn't initialized\n", SQVM_GetContextName(context));
		return;
	}

	SQBufState bufState = SQBufState(code);
	SQRESULT compileResult = sq_compilebuffer(v, &bufState, "console", -1);

	if (SQ_SUCCEEDED(compileResult))
	{
		sq_pushroottable(v);
		SQRESULT callResult = sq_call(v, 1, false, false);

		if (!SQ_SUCCEEDED(callResult))
		{
			Error(eDLL_T::ENGINE, NO_ERROR, "Failed to execute %s script \"%s\"\n", SQVM_GetContextName(context), code);
		}
	}
}

//---------------------------------------------------------------------------------
void VSquirrelVM::Attach() const
{
	DetourAttach((LPVOID*)&v_Script_RegisterConstant, &Script_RegisterConstant);
#ifndef DEDICATED
	DetourAttach((LPVOID*)&v_Script_InitializeCLGlobalStructs, &Script_InitializeCLGlobalStructs);
#endif // !DEDICATED
#ifndef CLIENT_DLL
	DetourAttach((LPVOID*)&v_Script_InitializeSVGlobalStructs, &Script_InitializeSVGlobalStructs);
	DetourAttach((LPVOID*)&v_Script_CreateServerVM, &Script_CreateServerVM);
#endif // !CLIENT_DLL
#ifndef DEDICATED
	DetourAttach((LPVOID*)&v_Script_CreateClientVM, &Script_CreateClientVM);
	DetourAttach((LPVOID*)&v_Script_CreateUIVM, &Script_CreateUIVM);
#endif // !DEDICATED
	DetourAttach((LPVOID*)&v_Script_DestroySignalEntryListHead, &Script_DestroySignalEntryListHead);
	DetourAttach((LPVOID*)&v_Script_LoadRson, &Script_LoadRson);
	//DetourAttach((LPVOID*)&v_Script_LoadScript, &Script_LoadScript);
}
//---------------------------------------------------------------------------------
void VSquirrelVM::Detach() const
{
	DetourDetach((LPVOID*)&v_Script_RegisterConstant, &Script_RegisterConstant);
#ifndef DEDICATED
	DetourDetach((LPVOID*)&v_Script_InitializeCLGlobalStructs, &Script_InitializeCLGlobalStructs);
#endif // !DEDICATED
#ifndef CLIENT_DLL
	DetourDetach((LPVOID*)&v_Script_InitializeSVGlobalStructs, &Script_InitializeSVGlobalStructs);
	DetourDetach((LPVOID*)&v_Script_CreateServerVM, &Script_CreateServerVM);
#endif // !CLIENT_DLL
#ifndef DEDICATED
	DetourDetach((LPVOID*)&v_Script_CreateClientVM, &Script_CreateClientVM);
	DetourDetach((LPVOID*)&v_Script_CreateUIVM, &Script_CreateUIVM);
#endif // !DEDICATED
	DetourDetach((LPVOID*)&v_Script_DestroySignalEntryListHead, &Script_DestroySignalEntryListHead);
	DetourDetach((LPVOID*)&v_Script_LoadRson, &Script_LoadRson);
	//DetourDetach((LPVOID*)&v_Script_LoadScript, &Script_LoadScript);
}