/**************************************************************************
*  Original Diku Mud copyright (C) 1990, 1991 by Sebastian Hammer,        *
*  Michael Seifert, Hans Henrik St{rfeldt, Tom Madsen, and Katja Nyboe.   *
*                                                                         *
*  Merc Diku Mud improvements copyright (C) 1992, 1993 by Michael         *
*  Chastain, Michael Quan, and Mitchell Tse.                              *
*                                                                         *
*  In order to use any part of this Merc Diku Mud, you must comply with   *
*  both the original Diku license in 'license.doc' as well the Merc       *
*  license in 'license.txt'.  In particular, you may not remove either of *
*  these copyright notices.                                               *
*                                                                         *
*  Much time and thought has gone into this software and you are          *
*  benefiting.  We hope that you share your changes too.  What goes       *
*  around, comes around.                                                  *
***************************************************************************
*       ROM 2.4 is copyright 1993-1998 Russ Taylor                        *
*       ROM has been brought to you by the ROM consortium                 *
*           Russ Taylor (rtaylor@hypercube.org)                           *
*           Gabrielle Taylor (gtaylor@hypercube.org)                      *
*           Brian Moore (zump@rom.org)                                    *
*       By using this code, you have agreed to follow the terms of the    *
*       ROM license, in the file Rom24/doc/rom.license                    *
***************************************************************************
*       1stMUD ROM Derivative (c) 2001-2002 by Ryan Jennings              *
*            http://1stmud.dlmud.com/  <r-jenn@shaw.ca>                   *
***************************************************************************/

#include <sys/types.h>
#include <stdio.h>
#include <string.h>
#include <time.h>
#include "merc.h"
#include "interp.h"

/* does aliasing and other fun stuff */
void substitute_alias(DESCRIPTOR_DATA * d, char *argument)
{
	CHAR_DATA *ch;
	char buf[MAX_STRING_LENGTH], prefix[MAX_INPUT_LENGTH],
		name[MAX_INPUT_LENGTH];
	const char *point;
	int alias;

	ch = d->original ? d->original : d->character;

	/* check for prefix */
	if (ch->prefix[0] != '\0' && str_prefix("prefix", argument))
	{
		if (strlen(ch->prefix) + strlen(argument) > MAX_INPUT_LENGTH)
			chprintln(ch, "Line to long, prefix not processed.");
		else
		{
			sprintf(prefix, "%s %s", ch->prefix, argument);
			argument = prefix;
		}
	}

	if (IS_NPC(ch) || ch->pcdata->alias[0] == NULL ||
		!str_prefix("alias", argument) || !str_prefix("una", argument)
		|| !str_prefix("prefix", argument))
	{
		interpret(d->character, argument);
		return;
	}

	strcpy(buf, argument);

	for (alias = 0; alias < MAX_ALIAS; alias++)	/* go through the aliases */
	{
		if (ch->pcdata->alias[alias] == NULL)
			break;

		if (!str_prefix(ch->pcdata->alias[alias], argument))
		{
			point = one_argument(argument, name);
			if (!strcmp(ch->pcdata->alias[alias], name))
			{
				buf[0] = '\0';
				strcat(buf, ch->pcdata->alias_sub[alias]);
				strcat(buf, " ");
				strcat(buf, point);

				if (strlen(buf) > MAX_INPUT_LENGTH - 1)
				{
					chprintln(ch, "Alias substitution too long. Truncated.");
					buf[MAX_INPUT_LENGTH - 1] = '\0';
				}
				break;
			}
		}
	}
	interpret(d->character, buf);
}

CH_CMD(do_alia)
{
	chprintln(ch, "I'm sorry, alias must be entered in full.");
	return;
}

CH_CMD(do_alias)
{
	CHAR_DATA *rch;
	char arg[MAX_INPUT_LENGTH];
	int pos;

	smash_tilde(argument);

	if (ch->desc == NULL)
		rch = ch;
	else
		rch = ch->desc->original ? ch->desc->original : ch;

	if (IS_NPC(rch))
		return;

	argument = one_argument(argument, arg);

	if (arg[0] == '\0')
	{

		if (rch->pcdata->alias[0] == NULL)
		{
			chprintln(ch, "You have no aliases defined.");
			return;
		}
		chprintln(ch, "Your current aliases are:");

		for (pos = 0; pos < MAX_ALIAS; pos++)
		{
			if (rch->pcdata->alias[pos] == NULL ||
				rch->pcdata->alias_sub[pos] == NULL)
				break;

			chprintlnf(ch, "    %s:  %s", rch->pcdata->alias[pos],
					   rch->pcdata->alias_sub[pos]);
		}
		return;
	}

	if (!str_prefix("una", arg) || !str_cmp("alias", arg))
	{
		chprintln(ch, "Sorry, that word is reserved.");
		return;
	}

	if (argument[0] == '\0')
	{
		for (pos = 0; pos < MAX_ALIAS; pos++)
		{
			if (rch->pcdata->alias[pos] == NULL ||
				rch->pcdata->alias_sub[pos] == NULL)
				break;

			if (!str_cmp(arg, rch->pcdata->alias[pos]))
			{
				chprintlnf(ch, "%s aliases to '%s'.",
						   rch->pcdata->alias[pos],
						   rch->pcdata->alias_sub[pos]);
				return;
			}
		}

		chprintln(ch, "That alias is not defined.");
		return;
	}

	if (!str_prefix(argument, "delete") || !str_prefix(argument, "prefix"))
	{
		chprintln(ch, "That shall not be done!");
		return;
	}

	for (pos = 0; pos < MAX_ALIAS; pos++)
	{
		if (rch->pcdata->alias[pos] == NULL)
			break;

		if (!str_cmp(arg, rch->pcdata->alias[pos]))	/* redefine an alias */
		{
			free_string(rch->pcdata->alias_sub[pos]);
			rch->pcdata->alias_sub[pos] = str_dup(argument);
			chprintlnf(ch, "%s is now realiased to '%s'.", arg, argument);
			return;
		}
	}

	if (pos >= MAX_ALIAS)
	{
		chprintln(ch, "Sorry, you have reached the alias limit.");
		return;
	}

	/* make a new alias */
	rch->pcdata->alias[pos] = str_dup(arg);
	rch->pcdata->alias_sub[pos] = str_dup(argument);
	chprintlnf(ch, "%s is now aliased to '%s'.", arg, argument);
}

CH_CMD(do_unalias)
{
	CHAR_DATA *rch;
	char arg[MAX_INPUT_LENGTH];
	int pos;
	bool found = FALSE;

	if (ch->desc == NULL)
		rch = ch;
	else
		rch = ch->desc->original ? ch->desc->original : ch;

	if (IS_NPC(rch))
		return;

	argument = one_argument(argument, arg);

	if (arg[0] == '\0')
	{
		chprintln(ch, "Unalias what?");
		return;
	}

	for (pos = 0; pos < MAX_ALIAS; pos++)
	{
		if (rch->pcdata->alias[pos] == NULL)
			break;

		if (found)
		{
			rch->pcdata->alias[pos - 1] = rch->pcdata->alias[pos];
			rch->pcdata->alias_sub[pos - 1] = rch->pcdata->alias_sub[pos];
			rch->pcdata->alias[pos] = NULL;
			rch->pcdata->alias_sub[pos] = NULL;
			continue;
		}

		if (!strcmp(arg, rch->pcdata->alias[pos]))
		{
			chprintln(ch, "Alias removed.");
			free_string(rch->pcdata->alias[pos]);
			free_string(rch->pcdata->alias_sub[pos]);
			rch->pcdata->alias[pos] = NULL;
			rch->pcdata->alias_sub[pos] = NULL;
			found = TRUE;
		}
	}

	if (!found)
		chprintln(ch, "No alias of that name to remove.");
}