/*
Copyright (C) 1999,2000  contributors of the QuakeForge project

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 2
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, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/

#include "quakedef.h"
#include "cl_slist.h"
#include "utils.h"

static qboolean slist_initialised = false;

server_entry_t	slist[MAX_SERVER_LIST];

void SList_Init(void) {
	memset(&slist, 0, sizeof(slist));
}

void SList_Shutdown(void) {  
	FILE *f;

	if (!slist_initialised)
		return;	

	if (!(f = fopen(va("%s/servers.txt", com_basedir), "w"))) {
		Com_DPrintf ("Couldn't open servers.txt.\n");
		return;
	}
	SList_Save(f);
	fclose(f);
}

void SList_Set (int i, char *addr, char *desc) {
	if (i >= MAX_SERVER_LIST || i < 0)
		Sys_Error("SList_Switch: Bad index %d", i);

	if (slist[i].server)
		Z_Free(slist[i].server);
	if (slist[i].description)
		Z_Free(slist[i].description);

	slist[i].server = CopyString (addr);
	slist[i].description = CopyString (desc);
}

void SList_Reset_NoFree (int i) { 
	if (i >= MAX_SERVER_LIST || i < 0)
		Sys_Error("SList_Switch: Bad index %d", i);

	slist[i].description = slist[i].server = NULL;
}

void SList_Reset (int i) {
	if (i >= MAX_SERVER_LIST || i < 0)
		Sys_Error("SList_Switch: Bad index %d", i);

	if (slist[i].server) {
		Z_Free(slist[i].server);
		slist[i].server = NULL;
	}

	if (slist[i].description) {
		Z_Free(slist[i].description);
		slist[i].description = NULL;
	}
}

void SList_Switch (int a, int b) {
	server_entry_t temp;

	if (a >= MAX_SERVER_LIST || a < 0)
		Sys_Error("SList_Switch: Bad index %d", a);
	if (b >= MAX_SERVER_LIST || b < 0)
		Sys_Error("SList_Switch: Bad index %d", b);

	memcpy(&temp, &slist[a], sizeof(temp));
	memcpy(&slist[a], &slist[b], sizeof(temp));
	memcpy(&slist[b], &temp, sizeof(temp));
}

int SList_Length (void) {
	int count;

	for (count = 0; count < MAX_SERVER_LIST && slist[count].server; count++)
		;
	return count;
}

void SList_Load (void) {
	int c, len, argc, count;
	char line[128], *desc, *addr;
	FILE *f;

	if (!(f = fopen (va("%s/servers.txt", com_basedir), "r")))
		return;

	count = len = 0;
	while ((c = getc(f))) {
		if (c == '\n' || c == '\r' || c == EOF) {
			if (c == '\r' && (c = getc(f)) != '\n' && c != EOF)
				ungetc(c, f);

			line[len] = 0;
			len = 0;
			Cmd_TokenizeString(line);

			if ((argc = Cmd_Argc()) >= 1) {
				addr = Cmd_Argv(0);
				desc = (argc >= 2) ? Cmd_MakeArgs(1) : "Unknown";
				SList_Set (count, addr, desc);
				if (++count == MAX_SERVER_LIST)
					break;
			}
			if (c == EOF)
				break;	//just in case an EOF follows a '\r'
		} else {
			if (len + 1 < sizeof(line))
				line[len++] = c;
		}
	}

	fclose (f);

	slist_initialised = true;
}

void SList_Save (FILE *f) {
	int i;
	char *spaces;

	for (i = 0; i < MAX_SERVER_LIST; i++) {
		if (!slist[i].server)
			break;
		spaces = CreateSpaces(32 - strlen(slist[i].server));
		fprintf(f, "%s%s%s\n", slist[i].server, spaces, slist[i].description);
	}
}