/*
 * lastlog.c: handles the lastlog features of irc. 
 *
 * Written By Michael Sandrof
 *
 * Copyright(c) 1990 
 *
 * See the COPYRIGHT file, or do a HELP IRCII COPYRIGHT 
 */


#include "irc.h"

#include "lastlog.h"
#include "window.h"
#include "screen.h"
#include "vars.h"
#include "ircaux.h"
#include "output.h"
#include "misc.h"
#include "hook.h"
#include "status.h"

extern	int	grab_http _((char *, char *, char *));
/*
 * lastlog_level: current bitmap setting of which things should be stored in
 * the lastlog.  The LOG_MSG, LOG_NOTICE, etc., defines tell more about this 
 */
static	unsigned long	lastlog_level;
static	unsigned long	notify_level;

static	unsigned long	msglog_level = 0;
	unsigned long	beep_on_level = 0;


FILE	*logptr = NULL;

/*
 * msg_level: the mask for the current message level.  What?  Did he really
 * say that?  This is set in the set_lastlog_msg_level() routine as it
 * compared to the lastlog_level variable to see if what ever is being added
 * should actually be added 
 */
static	unsigned long	msg_level = LOG_CRAP;

static	char	*levels[] =
{
	"CRAP",		"PUBLIC",	"MSGS",		"NOTICES",
	"WALLS",	"WALLOPS",	"NOTES",	"OPNOTES",
	"SNOTES",	"ACTIONS",	"DCC",		"CTCP",
	"USERLOG1",	"USERLOG2",	"USERLOG3",	"USERLOG4",
	"USERLOG5",	"BEEP",		"TCL",		"SEND_MSG", 
	"KILL"
};

#define NUMBER_OF_LEVELS (sizeof(levels) / sizeof(char *))


/* set_lastlog_msg_level: sets the message level for recording in the lastlog */
unsigned long set_lastlog_msg_level(unsigned long level)
{
	unsigned long	old;

	old = msg_level;
	msg_level = level;
	return (old);
}

/*
 * bits_to_lastlog_level: converts the bitmap of lastlog levels into a nice
 * string format.  Note that this uses the global buffer, so watch out 
 */
char	* bits_to_lastlog_level(unsigned long level)
{
	static	char	buffer[281]; /* this *should* be enough for this */
	int	i;
unsigned long	p;

	if (level == LOG_ALL)
		strcpy(buffer, "ALL");
	else if (level == 0)
		strcpy(buffer, "NONE");
	else
	{
		*buffer = '\0';
		for (i = 0, p = 1; i < NUMBER_OF_LEVELS; i++, p <<= 1)
		{
			if (level & p)
			{
				strmcat(buffer, levels[i],280);
				strmcat(buffer, " ",280);
			}
		}
	}
	return (buffer);
}

unsigned long parse_lastlog_level(char *str)
{
	char	*ptr,
		*rest;
	int	len,
		i;
unsigned long	p,
		level;
	int	neg;

	level = 0;
	while ((str = next_arg(str, &rest)) != NULL)
	{
		while (str)
		{
			if ((ptr = strchr(str, ',')) != NULL)
				*ptr++ = '\0';
			if ((len = strlen(str)) != 0)
			{
				if (my_strnicmp(str, "ALL", len) == 0)
					level = LOG_ALL;
				else if (my_strnicmp(str, "NONE", len) == 0)
					level = 0;
				else
				{
					if (*str == '-')
					{
						str++; len--;
						neg = 1;
					}
					else
						neg = 0;
					for (i = 0, p = 1; i < NUMBER_OF_LEVELS; i++, p <<= 1)
					{
						if (!my_strnicmp(str, levels[i], len))
						{
							if (neg)
								level &= (LOG_ALL ^ p);
							else
								level |= p;
							break;
						}
					}
					if (i == NUMBER_OF_LEVELS)
						say("Unknown lastlog level: %s",
							str);
				}
			}
			str = ptr;
		}
		str = rest;
	}
	return (level);
}

/*
 * set_lastlog_level: called whenever a "SET LASTLOG_LEVEL" is done.  It
 * parses the settings and sets the lastlog_level variable appropriately.  It
 * also rewrites the LASTLOG_LEVEL variable to make it look nice 
 */
void set_lastlog_level(Window *win, char *str, int unused)
{
	lastlog_level = parse_lastlog_level(str);
	set_string_var(LASTLOG_LEVEL_VAR, bits_to_lastlog_level(lastlog_level));
	curr_scr_win->lastlog_level = lastlog_level;
}

/*
 * set_msglog_level: called whenever a "SET MSGLOG_LEVEL" is done.  It
 * parses the settings and sets the msglog_level variable appropriately.  It
 * also rewrites the MSGLOG_LEVEL variable to make it look nice 
 */
void set_msglog_level(Window *win, char *str, int unused)
{
	msglog_level = parse_lastlog_level(str);
	set_string_var(MSGLOG_LEVEL_VAR, bits_to_lastlog_level(msglog_level));
}

void remove_from_lastlog(Window *window)
{
	Lastlog *tmp, *end_holder;

	if (window->lastlog_tail)
	{
		end_holder = window->lastlog_tail;
		tmp = window->lastlog_tail->prev;
		window->lastlog_tail = tmp;
		if (tmp)
			tmp->next = NULL;
		else
			window->lastlog_head = window->lastlog_tail;
		window->lastlog_size--;
		new_free(&end_holder->msg);
		new_free((char **)&end_holder);
	}
	else
		window->lastlog_size = 0;
}

/*
 * set_lastlog_size: sets up a lastlog buffer of size given.  If the lastlog
 * has gotten larger than it was before, all previous lastlog entry remain.
 * If it get smaller, some are deleted from the end. 
 */
void set_lastlog_size(Window *win_unused, char *unused, int size)
{
	int	i,
		diff,
		flag = 1;
	Window	*win;

	while ((win = traverse_all_windows(&flag)))
	{
		if (win->lastlog_size > size)
		{
			diff = win->lastlog_size - size;
			for (i = 0; i < diff; i++)
				remove_from_lastlog(win);
		}
		win->lastlog_max = size;
	}
}

/*
 * lastlog: the /LASTLOG command.  Displays the lastlog to the screen. If
 * args contains a valid integer, only that many lastlog entries are shown
 * (if the value is less than lastlog_size), otherwise the entire lastlog is
 * displayed 
 */
BUILT_IN_COMMAND(lastlog)
{
	int	cnt,
		from = 0,
		p,
		i,
		level = 0,
		msg_level,
		len,
		mask = 0,
		header = 1,
		lines = 0;
	Lastlog *start_pos;
	char	*match = NULL,
		*arg;
	char	*blah = NULL;
	FILE	*fp = NULL;
	
	message_from(NULL, LOG_CURRENT);
	cnt = curr_scr_win->lastlog_size;

	while ((arg = new_next_arg(args, &args)) != NULL)
	{
		if (*arg == '-')
		{
			arg++;
			if (!(len = strlen(arg)))
			{
				header = 0;
				continue;
			}
			else if (!my_strnicmp(arg, "MAX", len))
			{
				char *ptr = NULL;
				ptr = new_next_arg(args, &args);
				if (ptr)
					lines = atoi(ptr);
				if (lines < 0)
					lines = 0;
			}
			else if (!my_strnicmp(arg, "LITERAL", len))
			{
				if (match)
				{
					say("Second -LITERAL argument ignored");
					(void) new_next_arg(args, &args);
					continue;
				}
				if ((match = new_next_arg(args, &args)) != NULL)
					continue;
				say("Need pattern for -LITERAL");
				return;
			}
			else if (!my_strnicmp(arg, "BEEP", len))
			{
				if (match)
				{
					say("-BEEP is exclusive; ignored");
					continue;
				}
				else
					match = "\007";
			}
#if 0
			else if (!my_strnicmp(arg, "CLEAR", len))
			{
				free_lastlog(curr_scr_win);
				say("Cleared lastlog");
				return;
			}
#endif
			else if (!my_strnicmp(arg, "FILE", len))
			{
				if (args && *args)
				{
					char *filename;
					filename = next_arg(args, &args);
					if (!(fp = fopen(filename, "w")))
					{
						bitchsay("cannot open file %s", filename);
						return;
					}
				} 
				else
				{
					bitchsay("Filename needed for save");
					return;
				}
			}
			else
			{
				for (i = 0, p = 1; i < NUMBER_OF_LEVELS; i++, p <<= 1)
				{
					if (my_strnicmp(levels[i], arg, len) == 0)
					{
						mask |= p;
						break;
					}
				}
				if (i == NUMBER_OF_LEVELS)
				{
					bitchsay("Unknown flag: %s", arg);
					message_from(NULL, LOG_CRAP);
					return;
				}
			}
		}
		else
		{
			if (level == 0)
			{
				if (match || isdigit(*arg))
				{
					cnt = atoi(arg);
					level++;
				}
				else
					match = arg;
			}
			else if (level == 1)
			{
				from = atoi(arg);
				level++;
			}
		}
	}
	start_pos = curr_scr_win->lastlog_head;
	for (i = 0; (i < from) && start_pos; start_pos = start_pos->next)
		if (!mask || (mask & start_pos->level))
			i++;

	for (i = 0; (i < cnt) && start_pos; start_pos = start_pos->next)
		if (!mask || (mask & start_pos->level))
			i++;

	level = curr_scr_win->lastlog_level;
	msg_level = set_lastlog_msg_level(0);
	if (start_pos == NULL)
		start_pos = curr_scr_win->lastlog_tail;
	else
		start_pos = start_pos->prev;

	/* Let's not get confused here, display a seperator.. -lynx */
	strip_ansi_in_echo = 0;
	if (header && !fp)
		say("Lastlog:");

	if (match)
	{
#ifdef __GNUC__

		blah = (char *) alloca(strlen(match)+4);
		sprintf(blah, "*%s*", match);
#else
		malloc_sprintf(&blah, "*%s*",match);
#endif
	}
	for (i = 0; (i < cnt) && start_pos; start_pos = start_pos->prev)
	{
		if (!mask || (mask & start_pos->level))
		{
			i++;
			if (!match || wild_match(blah, start_pos->msg))
			{
				if (!fp)
				{
					put_it("%s", !get_int_var(LASTLOG_ANSI_VAR)?stripansicodes(start_pos->msg):start_pos->msg);
					grab_http("*", "*", start_pos->msg);
				} else
					fprintf(fp, "%s\n", !get_int_var(LASTLOG_ANSI_VAR)?stripansicodes(start_pos->msg):start_pos->msg);
				if (lines == 0)
					continue;
				else if (lines == 1)
					break;
				lines--;
			}
		}
	}
#ifndef __GNUC__
	new_free(&blah);
#endif
	if (header && !fp)
		say("End of Lastlog");
	strip_ansi_in_echo = 1;
	curr_scr_win->lastlog_level = level;
	message_from(NULL, LOG_CRAP);
	set_lastlog_msg_level(msg_level);
}

/*
 * add_to_lastlog: adds the line to the lastlog.  If the LASTLOG_CONVERSATION
 * variable is on, then only those lines that are user messages (private
 * messages, channel messages, wall's, and any outgoing messages) are
 * recorded, otherwise, everything is recorded 
 */
void add_to_lastlog(Window *window, const char *line)
{
	Lastlog *new;

	if (window == NULL)
		window = curr_scr_win;
	if (window->lastlog_level & msg_level)
	{
		/* no nulls or empty lines (they contain "> ") */
		if (line && (strlen(line) > 2))
		{
			new = (Lastlog *) new_malloc(sizeof(Lastlog));
			new->next = window->lastlog_head;
			new->prev = NULL;
			new->level = msg_level;
			new->msg = NULL;
			new->time = time(NULL);
			malloc_strcpy(&(new->msg), line);

			if (window->lastlog_head)
				window->lastlog_head->prev = new;
			window->lastlog_head = new;

			if (window->lastlog_tail == NULL)
				window->lastlog_tail = window->lastlog_head;

			if (window->lastlog_size++ >= window->lastlog_max)
				remove_from_lastlog(window);
		}
	}
}

unsigned long real_notify_level(void)
{
	return (notify_level);
}

unsigned long real_lastlog_level(void)
{
	return (lastlog_level);
}

void set_notify_level(Window *win, char *str, int unused)
{
	notify_level = parse_lastlog_level(str);
	set_string_var(NOTIFY_LEVEL_VAR, bits_to_lastlog_level(notify_level));
	curr_scr_win->notify_level = notify_level;
}

int logmsg(unsigned long log_type, char *from, char *string, int flag)
{
	char *timestr;
	time_t t;
	char *filename = NULL;
	char *expand = NULL;
	char *type = NULL;
	unsigned char **lines = NULL;
			
	context;
	
	if (!get_string_var(MSGLOGFILE_VAR) || !get_string_var(CTOOLZ_DIR_VAR))
		return 0;
		
	t = time(NULL);
	timestr = update_clock(GET_TIME);

	switch (flag)
	{
	case 0:
		if (!(type = bits_to_lastlog_level(log_type)))
			type = "Unknown";
		if (!do_hook(MSGLOG_LIST, "%s %s %s %s", timestr, type, from, string?string:""))
			break;
		if (!logptr)
			return 0;
		if (msglog_level & log_type)
		{
			lines = split_up_line(stripansicodes(convert_output_format(fget_string_var(FORMAT_MSGLOG_FSET)?fget_string_var(FORMAT_MSGLOG_FSET):"[$[10]0] [$1] - $2-", "%s %s %s %s", type, timestr, from, string)));
			for ( ; *lines; lines++)
				fprintf(logptr, "%s\n", *lines);
			fflush(logptr);
		}
		break;
	case 1:
		malloc_sprintf(&filename, "%s/%s", get_string_var(CTOOLZ_DIR_VAR), get_string_var(MSGLOGFILE_VAR));
		expand = expand_twiddle(filename);
		new_free(&filename);
		if (!do_hook(MSGLOG_LIST, "%s %s %s %s", timestr, "On", expand, ""))
		{
			new_free(&expand);
			return 1;
		}
		if (logptr)
		{
			new_free(&expand);
			return 1;
		}
		if (!(logptr = fopen(expand, get_int_var(APPEND_LOG_VAR)?"at":"wt")))
		{
			set_int_var(MSGLOG_VAR, 0);
			new_free(&expand);
			return 0;
		} 

		fprintf(logptr, "MsgLog started [%s]\n", my_ctime(t));
		fflush(logptr);
		if (string)
		{
			int i;

			i = logmsg(LOG_CURRENT, from, string, 0);
			return i;
		}
		bitchsay("Now logging messages to: %s", expand);
		new_free(&expand);
		break;
	case 2:
		if (!do_hook(MSGLOG_LIST, "%s %s %s %s", timestr, "Off", "", ""))
			return 1;
		if (!logptr)
			return 1;
		fprintf(logptr, "MsgLog ended [%s]\n", my_ctime(t));
		fclose(logptr);
		logptr = NULL;
		break;
	case 3:
		return logptr ? 1 : 0;
		break;
	case 4:
		if (!logptr)
			return 1;
		fprintf(logptr, "[TimeStamp %s]\n", my_ctime(t));
		fflush(logptr);
		break;
	default:
		bitchsay("Bad Flag passed to logmsg");
		return 0;
	}
	return 1;
}

void 	set_beep_on_msg (Window *win, char *str, int unused)
{
	beep_on_level = parse_lastlog_level(str);
	set_string_var(BEEP_ON_MSG_VAR, bits_to_lastlog_level(beep_on_level));
}

BUILT_IN_COMMAND(awaylog)
{
	if (args && *args)
	{
		msglog_level = parse_lastlog_level(args);
		set_string_var(MSGLOG_LEVEL_VAR, bits_to_lastlog_level(msglog_level));
		put_it("%s", convert_output_format("$G Away logging set to: $0-", "%s", get_string_var(MSGLOG_LEVEL_VAR)));
	}
	else
		put_it("%s", convert_output_format("$G Away logging currently: $0-", "%s", bits_to_lastlog_level(msglog_level)));		
}
