/**

 * ===============================================================

 * SourceMod (C)2004-2007 AlliedModders LLC.  All rights reserved.

 * ===============================================================

 *

 * This file is not open source and may not be copied without explicit

 * written permission of AlliedModders LLC.  This file may not be redistributed 

 * in whole or significant part.

 * For information, see LICENSE.txt or http://www.sourcemod.net/license.php

 *

 * Version: $Id$

 */

#include "CPlayerManager.h"

#include "ForwardSys.h"

#include "ShareSys.h"

CPlayerManager g_Players;

SH_DECL_HOOK5(IServerGameClients, ClientConnect, SH_NOATTRIB, 0, bool, edict_t *, const char *, const char *, char *, int);

SH_DECL_HOOK2_void(IServerGameClients, ClientPutInServer, SH_NOATTRIB, 0, edict_t *, const char *);

SH_DECL_HOOK1_void(IServerGameClients, ClientDisconnect, SH_NOATTRIB, 0, edict_t *);

SH_DECL_HOOK1_void(IServerGameClients, ClientCommand, SH_NOATTRIB, 0, edict_t *);

SH_DECL_HOOK1_void(IServerGameClients, ClientSettingsChanged, SH_NOATTRIB, 0, edict_t *);

SH_DECL_HOOK3_void(IServerGameDLL, ServerActivate, SH_NOATTRIB, 0, edict_t *, int, int);

CPlayerManager::CPlayerManager()

{

	m_AuthQueue = NULL;

	m_FirstPass = true;

}

CPlayerManager::~CPlayerManager()

{

	delete [] m_AuthQueue;

}

void CPlayerManager::OnSourceModAllInitialized()

{

	SH_ADD_HOOK_MEMFUNC(IServerGameClients, ClientConnect, serverClients, this, &CPlayerManager::OnClientConnect, false);

	SH_ADD_HOOK_MEMFUNC(IServerGameClients, ClientConnect, serverClients, this, &CPlayerManager::OnClientConnect_Post, true);

	SH_ADD_HOOK_MEMFUNC(IServerGameClients, ClientPutInServer, serverClients, this, &CPlayerManager::OnClientPutInServer, true);

	SH_ADD_HOOK_MEMFUNC(IServerGameClients, ClientDisconnect, serverClients, this, &CPlayerManager::OnClientDisconnect, false);

	SH_ADD_HOOK_MEMFUNC(IServerGameClients, ClientDisconnect, serverClients, this, &CPlayerManager::OnClientDisconnect_Post, true);

	SH_ADD_HOOK_MEMFUNC(IServerGameClients, ClientCommand, serverClients, this, &CPlayerManager::OnClientCommand, false);

	SH_ADD_HOOK_MEMFUNC(IServerGameClients, ClientSettingsChanged, serverClients, this, &CPlayerManager::OnClientSettingsChanged, true);

	SH_ADD_HOOK_MEMFUNC(IServerGameDLL, ServerActivate, gamedll, this, &CPlayerManager::OnServerActivate, true);

	g_ShareSys.AddInterface(NULL, this);

	ParamType p1[] = {Param_Cell, Param_String, Param_Cell};

	ParamType p2[] = {Param_Cell};

	ParamType p3[] = {Param_Cell, Param_String};

	m_clconnect = g_Forwards.CreateForward("OnClientConnect", ET_Event, 3, p1);

	m_clputinserver = g_Forwards.CreateForward("OnClientPutInServer", ET_Ignore, 1, p2);

	m_cldisconnect = g_Forwards.CreateForward("OnClientDisconnect", ET_Ignore, 1, p2);

	m_cldisconnect_post = g_Forwards.CreateForward("OnClientDisconnect_Post", ET_Ignore, 1, p2);

	m_clcommand = g_Forwards.CreateForward("OnClientCommand", ET_Hook, 1, p2);

	m_clinfochanged = g_Forwards.CreateForward("OnClientSettingsChanged", ET_Ignore, 1, p2);

	m_clauth = g_Forwards.CreateForward("OnClientAuthorized", ET_Ignore, 2, p2);

}

void CPlayerManager::OnSourceModShutdown()

{

	SH_REMOVE_HOOK_MEMFUNC(IServerGameClients, ClientConnect, serverClients, this, &CPlayerManager::OnClientConnect, false);

	SH_REMOVE_HOOK_MEMFUNC(IServerGameClients, ClientPutInServer, serverClients, this, &CPlayerManager::OnClientPutInServer, true);

	SH_REMOVE_HOOK_MEMFUNC(IServerGameClients, ClientDisconnect, serverClients, this, &CPlayerManager::OnClientDisconnect, false);

	SH_REMOVE_HOOK_MEMFUNC(IServerGameClients, ClientDisconnect, serverClients, this, &CPlayerManager::OnClientDisconnect_Post, true);

	SH_REMOVE_HOOK_MEMFUNC(IServerGameClients, ClientCommand, serverClients, this, &CPlayerManager::OnClientCommand, false);

	SH_REMOVE_HOOK_MEMFUNC(IServerGameClients, ClientSettingsChanged, serverClients, this, &CPlayerManager::OnClientSettingsChanged, true);

	SH_REMOVE_HOOK_MEMFUNC(IServerGameDLL, ServerActivate, gamedll, this, &CPlayerManager::OnServerActivate, true);

	/* Release forwards */

	g_Forwards.ReleaseForward(m_clconnect);

	g_Forwards.ReleaseForward(m_clputinserver);

	g_Forwards.ReleaseForward(m_cldisconnect);

	g_Forwards.ReleaseForward(m_cldisconnect_post);

	g_Forwards.ReleaseForward(m_clcommand);

	g_Forwards.ReleaseForward(m_clinfochanged);

	g_Forwards.ReleaseForward(m_clauth);

	delete [] m_Players;

}

void CPlayerManager::OnServerActivate(edict_t *pEdictList, int edictCount, int clientMax)

{

	if (m_FirstPass)

	{

		/* Initialize all players */

		m_maxClients = clientMax;

		m_PlayerCount = 0;

		m_Players = new CPlayer[m_maxClients + 1];

		m_AuthQueue = new unsigned int[m_maxClients + 1];

		m_FirstPass = false;

		memset(m_AuthQueue, 0, sizeof(unsigned int) * (m_maxClients + 1));

	}

}

void CPlayerManager::RunAuthChecks()

{

	CPlayer *pPlayer;

	const char *authstr;

	unsigned int removed = 0;

	for (unsigned int i=1; i<=m_AuthQueue[0]; i++)

	{

		pPlayer = GetPlayerByIndex(m_AuthQueue[i]);

		authstr = engine->GetPlayerNetworkIDString(pPlayer->m_pEdict);

		if (authstr && authstr[0] != '\0'

			&& (strcmp(authstr, "STEAM_ID_PENDING") != 0))

		{

			/* Set authorization */

			pPlayer->m_AuthID.assign(authstr);

			pPlayer->m_IsAuthorized = true;

			/* Send to extensions */

			List<IClientListener *>::iterator iter;

			IClientListener *pListener;

			for (iter=m_hooks.begin(); iter!=m_hooks.end(); iter++)

			{

				pListener = (*iter);

				pListener->OnClientAuthorized(m_AuthQueue[i], authstr);

			}

			/* Send to plugins */

			if (m_clauth->GetFunctionCount())

			{

				m_clauth->PushCell(m_AuthQueue[i]);

				m_clauth->PushString(authstr);

				m_clauth->Execute(NULL);

			}

			/* Mark as removed from queue */

			m_AuthQueue[i] = 0;

			removed++;

		}

	}

	/* Clean up the queue */

	if (removed)

	{

		/* We don't have to compcat the list if it's empty */

		if (removed != m_AuthQueue[0])

		{

			unsigned int diff = 0;

			for (unsigned int i=1; i<=m_AuthQueue[0]; i++)

			{

				/* If this member is removed... */

				if (m_AuthQueue[i] == 0)

				{

					/* Increase the differential */

					diff++;

				} else {

					/* diff cannot increase faster than i+1 */

					assert(i > diff);

					assert(i - diff >= 1);

					/* move this index down */

					m_AuthQueue[i - diff] = m_AuthQueue[i];

				}

			}

			m_AuthQueue[0] -= removed;

		} else {

			m_AuthQueue[0] = 0;

			g_SourceMod.SetAuthChecking(false);

		}

	}

}

bool CPlayerManager::OnClientConnect(edict_t *pEntity, const char *pszName, const char *pszAddress, char *reject, int maxrejectlen)

{

	int client = engine->IndexOfEdict(pEntity);

	List<IClientListener *>::iterator iter;

	IClientListener *pListener = NULL;

	for (iter=m_hooks.begin(); iter!=m_hooks.end(); iter++)

	{

		pListener = (*iter);

		if (!pListener->InterceptClientConnect(client, reject, maxrejectlen))

		{

			return false;

		}

	}

	cell_t res = 1;

	m_Players[client].Initialize(pszName, pszAddress, pEntity);

	m_clconnect->PushCell(client);

	m_clconnect->PushStringEx(reject, maxrejectlen, SM_PARAM_STRING_UTF8, SM_PARAM_COPYBACK);

	m_clconnect->PushCell(maxrejectlen);

	m_clconnect->Execute(&res, NULL);

	if (res)

	{

		m_AuthQueue[++m_AuthQueue[0]] = client;

		g_SourceMod.SetAuthChecking(true);

	}

	return (res) ? true : false;

}

bool CPlayerManager::OnClientConnect_Post(edict_t *pEntity, const char *pszName, const char *pszAddress, char *reject, int maxrejectlen)

{

	int client = engine->IndexOfEdict(pEntity);

	bool orig_value = META_RESULT_ORIG_RET(bool);

	if (orig_value)

	{

		List<IClientListener *>::iterator iter;

		IClientListener *pListener = NULL;

		for (iter=m_hooks.begin(); iter!=m_hooks.end(); iter++)

		{

			pListener = (*iter);

			pListener->OnClientConnected(client);

		}

	}

	return true;

}

void CPlayerManager::OnClientPutInServer(edict_t *pEntity, const char *playername)

{

	cell_t res;

	int client = engine->IndexOfEdict(pEntity);

	CPlayer *pPlayer = GetPlayerByIndex(client);

	if (!pPlayer->IsConnected())

	{

		/* Run manual connection routines */

		char error[255];

		if (!OnClientConnect(pEntity, playername, "127.0.0.1", error, sizeof(error)))

		{

			/* :TODO: kick the bot if it's rejected */

			return;

		}

		List<IClientListener *>::iterator iter;

		IClientListener *pListener = NULL;

		for (iter=m_hooks.begin(); iter!=m_hooks.end(); iter++)

		{

			pListener = (*iter);

			pListener->OnClientConnected(client);

		}

	}

	List<IClientListener *>::iterator iter;

	IClientListener *pListener = NULL;

	for (iter=m_hooks.begin(); iter!=m_hooks.end(); iter++)

	{

		pListener = (*iter);

		pListener->OnClientPutInServer(client);

	}

	m_Players[client].Connect();

	m_PlayerCount++;

	m_clputinserver->PushCell(client);

	m_clputinserver->Execute(&res, NULL);

}

void CPlayerManager::OnClientAuthorized()

{

	//:TODO:

}

void CPlayerManager::OnClientDisconnect(edict_t *pEntity)

{

	cell_t res;

	int client = engine->IndexOfEdict(pEntity);

	if (m_Players[client].IsConnected())

	{

		m_cldisconnect->PushCell(client);

		m_cldisconnect->Execute(&res, NULL);

	}

	if (m_Players[client].IsInGame())

	{

		m_PlayerCount--;

	}

	List<IClientListener *>::iterator iter;

	IClientListener *pListener = NULL;

	for (iter=m_hooks.begin(); iter!=m_hooks.end(); iter++)

	{

		pListener = (*iter);

		pListener->OnClientDisconnecting(client);

	}

	/**

	 * Remove client from auth queue if necessary

	 */

	if (!m_Players[client].IsAuthorized())

	{

		for (unsigned int i=1; i<=m_AuthQueue[0]; i++)

		{

			if (m_AuthQueue[i] == client)

			{

				/* Move everything ahead of us back by one */

				for (unsigned int j=i+1; j<=m_AuthQueue[0]; j++)

				{

					m_AuthQueue[j-1] = m_AuthQueue[j];

				}

				/* Remove us and break */

				m_AuthQueue[0]--;

				break;

			}

		}

	}

	m_Players[client].Disconnect();

}

void CPlayerManager::OnClientDisconnect_Post(edict_t *pEntity)

{

	cell_t res;

	int client = engine->IndexOfEdict(pEntity);

	m_cldisconnect_post->PushCell(client);

	m_cldisconnect_post->Execute(&res, NULL);

	List<IClientListener *>::iterator iter;

	IClientListener *pListener = NULL;

	for (iter=m_hooks.begin(); iter!=m_hooks.end(); iter++)

	{

		pListener = (*iter);

		pListener->OnClientDisconnected(client);

	}

}

void CPlayerManager::OnClientCommand(edict_t *pEntity)

{

	cell_t res;

	m_clcommand->PushCell(engine->IndexOfEdict(pEntity));

	m_clcommand->Execute(&res, NULL);

}

void CPlayerManager::OnClientSettingsChanged(edict_t *pEntity)

{

	cell_t res;

	int client = engine->IndexOfEdict(pEntity);

	m_clinfochanged->PushCell(engine->IndexOfEdict(pEntity));

	m_clinfochanged->Execute(&res, NULL);

	m_Players[client].SetName(engine->GetClientConVarValue(client, "name"));

}

int CPlayerManager::GetMaxClients()

{

	return m_maxClients;

}

CPlayer *CPlayerManager::GetPlayerByIndex(int client) const

{

	if (client > m_maxClients || client < 1)

	{

		return NULL;

	}

	return &m_Players[client];

}

int CPlayerManager::GetNumPlayers()

{

	return m_PlayerCount;

}

void CPlayerManager::AddClientListener(IClientListener *listener)

{

	m_hooks.push_back(listener);

}

void CPlayerManager::RemoveClientListener(IClientListener *listener)

{

	m_hooks.remove(listener);

}

IGamePlayer *CPlayerManager::GetGamePlayer(edict_t *pEdict)

{

	int index = engine->IndexOfEdict(pEdict);

	return GetGamePlayer(index);

}

IGamePlayer *CPlayerManager::GetGamePlayer(int client)

{

	return GetPlayerByIndex(client);

}

/*******************

 *** PLAYER CODE ***

 *******************/

CPlayer::CPlayer()

{

	m_IsConnected = false;

	m_IsInGame = false;

	m_IsAuthorized = false;

	m_pEdict = NULL;

}

void CPlayer::Initialize(const char *name, const char *ip, edict_t *pEntity)

{

	m_IsConnected = true;

	m_Name.assign(name);

	m_Ip.assign(ip);

	m_pEdict = pEntity;

}

void CPlayer::Connect()

{

	m_IsInGame = true;

}

void CPlayer::Authorize(const char *steamid)

{

	m_IsAuthorized = true;

	m_AuthID.assign(steamid);

}

void CPlayer::Disconnect()

{

	m_IsConnected = false;

	m_IsInGame = false;

	m_IsAuthorized = false;

	m_Name.clear();

	m_Ip.clear();

	m_AuthID.clear();

	m_pEdict = NULL;

}

void CPlayer::SetName(const char *name)

{

	m_Name.assign(name);

}

const char *CPlayer::GetName() const

{

	return m_Name.c_str();

}

const char *CPlayer::GetIPAddress() const

{

	return m_Ip.c_str();

}

const char *CPlayer::GetAuthString() const

{

	return m_AuthID.c_str();

}

edict_t *CPlayer::GetEdict() const

{

	return m_pEdict;

}

bool CPlayer::IsInGame() const

{

	return m_IsInGame;

}

bool CPlayer::IsConnected() const

{

	return m_IsConnected;

}

bool CPlayer::IsAuthorized() const

{

	return m_IsAuthorized;

}

bool CPlayer::IsFakeClient() const

{

	return (strcmp(m_AuthID.c_str(), "BOT") == 0);

}