/*==LICENSE==*

CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011  Cyan Worlds, Inc.

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.

You can contact Cyan Worlds, Inc. by email legal@cyan.com
 or by snail mail at:
      Cyan Worlds, Inc.
      14617 N Newport Hwy
      Mead, WA   99021

*==LICENSE==*/
#include "plAgeLoader.h"

#include "hsTimer.h"
#include "hsResMgr.h"
#include "plgDispatch.h"

#include <algorithm>

#include "../pnNetCommon/plNetApp.h"
#include "../pnKeyedObject/plKey.h"

#include "../plMessage/plAgeLoadedMsg.h"
#include "../plNetMessage/plNetMessage.h"
#include "../plProgressMgr/plProgressMgr.h"
#include "../plSDL/plSDL.h"
#include "../pnDispatch/plDispatch.h"
#include "../plResMgr/plResManager.h"

#include "../plNetClient/plNetClientMgr.h"

//
// if room is reserved or for animations, don't report it to the server.
// the server only cares about rooms which have real, networked objects in them.
// The server already assigns a global room to everyone for things like avatar and builtin state .
//
bool ReportRoomToServer(const plKey &key)
{
	plLocation keyLoc=key->GetUoid().GetLocation();
	bool skip=(keyLoc.IsReserved() || keyLoc.IsVirtual() ||
				// HACK ALERT - replace with new uoid type flags
				(key->GetName() && 
					(!strnicmp(key->GetName(), "global", 6) ||
					strstr(key->GetName(), "_Male") ||
					strstr(key->GetName(), "_Female") 
					)
				)
			);	
	
	if (skip)
		hsLogEntry(plNetApp::StaticDebugMsg("Not reporting room %s to server, reserved=%d, virtual=%d", 
			key->GetName(), keyLoc.IsReserved(), keyLoc.IsVirtual()));
	
	return !skip;
}

//
// call when finished paging in a room.
//
void plAgeLoader::FinishedPagingInRoom(plKey* rmKey, int numRms)
{
	if (numRms==0)
		return;
		
	unsigned pendingPageIns = PendingPageIns().size();

	plNetClientApp* nc = plNetClientApp::GetInstance();

	// Send a msg to the server indicating that we have this room paged in
	plNetMsgPagingRoom * pagingMsg = TRACKED_NEW plNetMsgPagingRoom;
	pagingMsg->SetNetProtocol(kNetProtocolCli2Game);
	int i;
	for(i=0;i<numRms;i++)
	{
		plKey key=rmKey[i];
		if (!RemovePendingPageInRoomKey(key))	// room is done paging in
			continue;	// we didn't queue this room
		
		if (!ReportRoomToServer(key))
			continue;

		pagingMsg->AddRoom(key);		
		hsLogEntry(nc->DebugMsg("\tSending PageIn/RequestState msg, room=%s\n", key->GetName()));
	}
	if( pagingMsg->GetNumRooms() > 0 )	// all rooms were reserved
	{
		plNetClientMgr * mgr = plNetClientMgr::GetInstance();
		mgr->AddPendingPagingRoomMsg( pagingMsg );
	}
	else
		delete pagingMsg;

	// If any of these rooms were queued for load by us, then we may be done loading the age.
	if (pendingPageIns != PendingPageIns().size())
	{
		bool ageLoaded = (PendingPageIns().size()==0) && (fFlags & kLoadingAge);
		if (ageLoaded)
		{
			plAgeLoaded2Msg * msg = TRACKED_NEW plAgeLoaded2Msg;
			msg->Send();
			// join task will call NotifyAgeLoaded for us later
		}
	}
}

//
// called by the client when a room is finished paging out
//
void plAgeLoader::FinishedPagingOutRoom(plKey* rmKey, int numRms)
{
	plNetClientApp* nc = plNetClientApp::GetInstance();
	nc->StayAlive(hsTimer::GetSysSeconds());	// alive

	int i;
	for(i=0;i<numRms;i++)
	{
		plKeyVec::iterator found = std::find( fPendingPageOuts.begin(), fPendingPageOuts.end(), rmKey[ i ] );
		if( found != fPendingPageOuts.end() )
		{
			fPendingPageOuts.erase( found );
			nc->DebugMsg("Finished paging out room %s", rmKey[i]->GetName());
		}
	}

	if (PendingPageOuts().size() == 0  && (fFlags & kUnLoadingAge))
	{
		NotifyAgeLoaded( false );
	}

}


//
// call when starting to page out a room.
// allows server to transfer ownership of room objects to someone else.
//
void plAgeLoader::StartPagingOutRoom(plKey* rmKey, int numRms)
{
	plNetClientApp* nc = plNetClientApp::GetInstance();

	plNetMsgPagingRoom pagingMsg;
	pagingMsg.SetNetProtocol(kNetProtocolCli2Game);
	pagingMsg.SetPagingOut(true);
	int i;
	for(i=0;i<numRms;i++)
	{
		plKey key=rmKey[i];
		if (!ReportRoomToServer(key))
			continue;
	
		pagingMsg.AddRoom(rmKey[i]);
		nc->DebugMsg("\tSending PageOut msg, room=%s", rmKey[i]->GetName());
	}

	if (!pagingMsg.GetNumRooms())	// all rooms were reserved
		return;

	nc->SendMsg(&pagingMsg);
}

// Client telling us that this page isn't going to get the start/finish combo
// on page out, most likely because it was a load-and-hold, not a load. So take
// it from our pending list but don't actually process it
// Note: right now it's just a dup of FinishPagingOutRoom(), but since the latter
// might change later, we go ahead and dup to avoid unnecessary bugs later
void plAgeLoader::IgnorePagingOutRoom(plKey* rmKey, int numRms)
{
	plNetClientApp* nc = plNetClientApp::GetInstance();
	nc->StayAlive(hsTimer::GetSysSeconds());	// alive

	int i;
	for(i=0;i<numRms;i++)
	{
		plKeyVec::iterator found = std::find( fPendingPageOuts.begin(), fPendingPageOuts.end(), rmKey[ i ] );
		if( found != fPendingPageOuts.end() )
		{
			fPendingPageOuts.erase( found );
			nc->DebugMsg("Ignoring paged out room %s", rmKey[i]->GetName());
		}
	}

	if (PendingPageOuts().size() == 0  && (fFlags & kUnLoadingAge))
	{
		NotifyAgeLoaded( false );
	}
}

///////////////////////////////////

bool plAgeLoader::IsPendingPageInRoomKey(plKey pKey, int *idx) 
{
	if (pKey)
	{
		plKeyVec::iterator result=std::find(fPendingPageIns.begin(), fPendingPageIns.end(), pKey);
		bool found = result!=fPendingPageIns.end();
		if (idx)
			*idx = found ? result-fPendingPageIns.begin() : -1;
		return found;
	}
	return false;
}

void plAgeLoader::AddPendingPageInRoomKey(plKey pKey)
{
	if (!IsPendingPageInRoomKey(pKey))
	{
		fPendingPageIns.push_back(pKey);
	}
}

bool plAgeLoader::RemovePendingPageInRoomKey(plKey pKey)
{
	int idx;
	if (IsPendingPageInRoomKey(pKey, &idx))
	{
		fPendingPageIns.erase(fPendingPageIns.begin()+idx);	// remove key from list
		return true;
	}
	return false;
}

//////////////////////////////////////////////////////////////////////////////
//// Page Exclusion //////////////////////////////////////////////////////////
//																			//
// Fun debugging exclude commands (to prevent certain pages from loading)	//
//																			//
//////////////////////////////////////////////////////////////////////////////

class plExcludePage
{
	public:
		char	*fPageName;
		char	*fAgeName;

		plExcludePage() { fPageName = nil; fAgeName = nil; }
		plExcludePage( char *p, char *a )
		{
			fPageName = p; 
			fAgeName = a;
		}
};

static hsTArray<plExcludePage>	sExcludeList;

void	plAgeLoader::ClearPageExcludeList( void )
{
	int		i;


	for( i = 0; i < sExcludeList.GetCount(); i++ )
	{
		delete [] sExcludeList[ i ].fPageName;
		delete [] sExcludeList[ i ].fAgeName;
	}
}

void	plAgeLoader::AddExcludedPage( const char *pageName, const char *ageName )
{
	char *p = hsStrcpy( pageName );
	char *a = nil;
	if( ageName != nil )
		a = hsStrcpy( ageName );

	sExcludeList.Append( plExcludePage( p, a ) );
}

bool	plAgeLoader::IsPageExcluded( const plAgePage *page, const char *ageName )
{
	// check page flags
	if (page->GetFlags() & plAgePage::kPreventAutoLoad)
		return true;

	// check exclude list
	const char* pageName = page->GetName();
	int		i;
	for( i = 0; i < sExcludeList.GetCount(); i++ )
	{
		if( stricmp( pageName, sExcludeList[ i ].fPageName ) == 0 )
		{
			if( ageName == nil || sExcludeList[ i ].fAgeName == nil ||
				stricmp( ageName, sExcludeList[ i ].fAgeName ) == 0 )
			{
				return true;
			}
		}
	}

	// Check if pages are excluded due to age SDL vars
	if (page->GetFlags() & plAgePage::kLoadIfSDLPresent) 
	{
		if (IGetInitialAgeState())
		{
			plSimpleStateVariable* sdVar = IGetInitialAgeState()->FindVar(pageName);
			if (!sdVar)
				return true;	// no sdl var, exclude
			
			bool value;
			sdVar->Get(&value);
			return value ? false : true;	// exclude if var is false
		}
		else
			return true;	// no age state, exclude
	}

	return false;
}