/*
....[@@@..[@@@..............[@.................. MUD++ is a written from
....[@..[@..[@..[@..[@..[@@@@@....[@......[@.... scratch multi-user swords and
....[@..[@..[@..[@..[@..[@..[@..[@@@@@..[@@@@@.. sorcery game written in C++.
....[@......[@..[@..[@..[@..[@....[@......[@.... This server is an ongoing
....[@......[@..[@@@@@..[@@@@@.................. development project.  All 
................................................ contributions are welcome. 
....Copyright(C).1995.Melvin.Smith.............. Enjoy. 
------------------------------------------------------------------------------
Melvin Smith (aka Fusion)         msmith@hom.net
MUD++ development mailing list    mudpp@van.ml.org
------------------------------------------------------------------------------
persist.cpp
*/

// Data file is used for saving informations that should persist between
// reboots, but do not fit in area files, nor the player files
// example: pc shops data, last wandering camp position etc.

#include "config.h"
#include "io.h"
#include "garbcoll.h"
#include "area.h"
#include "room.h"
#include "global.h"
#include "shop.h"

int GC_stack_hint = 0;
int GC_free_hint = 0;

void loadPersistentData()
{
	char buf[BUF];
	InputFile data( "../etc/persist.dat" );
	if ( !data )
		return;

	ShopKeeper * sk;
	Room * room;
	// load shops
	
	while ( *data.getword(buf) != '#' )
	{
		switch( *buf )
		{
			case 'G':
				if ( !strcmp( buf, "GC_stack_hint" ) )
				{
					GC_stack_hint = data.getnum();
					continue;
				}
				else if ( !strcmp( buf, "GC_free_hint" ) )
				{
					GC_free_hint = data.getnum();
					continue;
				}
				break;
			case 'S':
				if ( !strcmp( buf, "Shop" ) )
				{
					data.getword(buf);
					room = lookupRoom(buf);
					sk = new ShopKeeper();
					sk->readFrom(data);
					shops.add(sk);
					if ( !room )
					{
						Cout << "Warning: room " << buf << " for shopkeeper not found.\n\r";
						continue;
					}
					// a bit tricky - will change
					sk->toWorld();
					room->addCharInv(sk);
					continue;
				}
				break;

			default:
				break;
		}
		Cout << "Unknown persistent data " << buf << " at line " <<
			data.getLineNo() << endl;
	}		

}

void savePersistentData()
{
	OutputFile data("../etc/persist.dat");
	ShopKeeper * sk;

	data << "GC_stack_hint " << GC_getStackSize() <<endl;
	data << "GC_free_hint " << GC_getFreeCount() <<endl;

	for_each( shops, sk )
	{
		data << "Shop " << sk->inRoom()->getArea()->getKey() << ":" <<
			sk->inRoom()->getKey() << endl;
		sk->writeTo(data);
	}

	data << "#";
	return;
}