/* 
 * Copyright Colten Edwards 1996
 */
 
#include "irc.h"
static char cvsrevision[] = "$Id$";
CVS_REVISION(readlog_c)
#include "struct.h"

#include <sys/stat.h>

#include "ircterm.h"
#include "server.h"
#include "vars.h"
#include "ircaux.h"
#include "input.h"
#include "window.h"
#include "screen.h"
#include "output.h"
#include "status.h"
#include "misc.h"
#define MAIN_SOURCE
#include "modval.h"
#ifdef WANT_HEBREW
#include "hebrew.h"
#endif

FILE * msg_fp = NULL;

static  Window  *msg_window = NULL;
static  int     finished_msg_paging = 0;
static  Screen  *msg_screen = NULL;
static  int     use_msg_window = 0;
static	void log_prompt (char *name, char *line);
static	void set_msg_screen (Screen *);
static	char	*(*read_log_func) (char *, int, FILE *);
	
BUILT_IN_COMMAND(remove_log)
{
	char *expand;
	char *filename = NULL;
	int old_display = window_display;

	int  reset_logptr = 0;

	if ((get_string_var(MSGLOGFILE_VAR) == NULL) || (get_string_var(CTOOLZ_DIR_VAR) == NULL))
		return;
	malloc_sprintf(&filename, "%s/%s", get_string_var(CTOOLZ_DIR_VAR), get_string_var(MSGLOGFILE_VAR));
	expand = expand_twiddle(filename);
	new_free(&filename);
	window_display = 0;	
	reset_logptr = logmsg(LOG_CURRENT, NULL, 3, NULL);
	log_toggle(0, NULL);
	window_display = old_display;
	if (unlink(expand)) 
	{
		bitchsay("Error unlinking: %s", expand);
		new_free(&expand);
		return;
	}
	window_display = 0;
	set_int_var(MSGCOUNT_VAR, 0);
	if (reset_logptr)
		log_toggle(1, NULL);
	window_display = old_display;
	bitchsay("Removed %s.", expand);
	status_update(1);
	new_free(&expand);
}

static int in_read_log = 0;

BUILT_IN_COMMAND(readlog)
{
	char *expand;
	struct stat stat_buf;
	char *filename = NULL;
	
	read_log_func = fgets;

	if (msg_window)
		return;
	
	if (command)
	{
		in_read_log = 1;
		if (my_stricmp(command, "MORE"))
		{
			if (args && !my_strnicmp(args, "-resume", 2))
			{
				next_arg(args, &args);
				read_log_func = &rfgets;
			}
		}
	}

	if (args && *args)
	{
		malloc_sprintf(&filename, "%s", args);
	}
	else
	{
		const char *ctoolz_dir = get_string_var(CTOOLZ_DIR_VAR);
		const char *msglogfile = get_string_var(MSGLOGFILE_VAR);

		if (!ctoolz_dir || !msglogfile)
			return;

		malloc_sprintf(&filename, "%s/%s", get_string_var(CTOOLZ_DIR_VAR), get_string_var(MSGLOGFILE_VAR));

	}

	expand = expand_twiddle(filename);
	new_free(&filename);

	if (stat(expand, &stat_buf) == 0 && !(stat_buf.st_mode & S_IFDIR))
		msg_fp = fopen(expand, "r");

	if (msg_fp == NULL)
	{
		log_put_it("%s Error Opening Log file %s", thing_ansi, expand);
		new_free(&expand);
		return;
	}

	if (read_log_func == &rfgets)
		fseek(msg_fp, 0, SEEK_END);

	msg_window = current_window;
	msg_screen = current_window->screen;
	log_prompt(expand, NULL);
	new_free(&expand);
}

/*
 * show_log:  Shows either a page of text from a msg_fp, or the whole
 * thing, depending on the value of HELP_PAGER_VAR.  If it gets to the end,
 * (in either case it will eventually), it closes the file, and returns 0
 * to indicate this.
 *
 * Based on show_help()
 */ 
static	int show_log(Window *window, char *name)
{
	Window	*old_window;
	int	rows = 0;
	char	line[500];

	if (window)
	{
		old_window = current_window;
		current_window = window;
	}
	else
	{
		old_window = NULL;
		window = current_window;
	}
	if (get_int_var(HELP_PAGER_VAR))
		rows = window->display_size - (window->double_status + 2);
	while (--rows)
	{
 		if ((*read_log_func)(line, 499, msg_fp))
		{
			if (*(line + strlen(line) - 1) == '\n')
			*(line + strlen(line) - 1) = (char) 0;
			#ifdef WANT_HEBREW
			if (get_int_var(HEBREW_TOGGLE_VAR))
				hebrew_process(line);
			#endif
			log_put_it("%s", line);
		}
		else
		{
			if (msg_fp) fclose(msg_fp);
			set_msg_screen(NULL);
			msg_fp = NULL;
			return (0);
		}
	}
	return (1);
}

void remove_away_log(char *stuff, char *line)
{
	if ((line && toupper(*line) == 'Y'))
		remove_log(NULL, NULL, NULL, NULL);
	in_read_log = 0;
}
                         
static	void set_msg_screen(Screen *screen)
{
	msg_screen = screen;
	if (!msg_screen && msg_window)
	{
		if (use_msg_window)
		{
			int display = window_display;

			window_display = 0;
			delete_window(msg_window);
			window_display = display;
		}
		msg_window = NULL;
		update_all_windows();
	}
}

/*
 * log_prompt: The main procedure called to display the log file
 * currently being accessed.  Using add_wait_prompt(), it sets it
 * self up to be recalled when the next page is asked for.   If
 * called when we have finished paging the log file, we exit, as
 * there is nothing left to show.  If line is 'q' or 'Q', exit the
 * log pager, clean up, etc..  If all is cool for now, we call
 * show_help, and either if its finished, exit, or prompt for the
 * next page.   
 */

static	void log_prompt(char *name, char *line)
{

	if (line && *line && (toupper(*line) == 'Q'))
	{
		finished_msg_paging = 1;
		if (msg_fp) 
			fclose(msg_fp);
		msg_fp = NULL;
		set_msg_screen(NULL);
		if (!in_read_log)
			add_wait_prompt("Delete msg log [y/N]? ", remove_away_log, empty_string, WAIT_PROMPT_LINE,1);
		return;
	}

	if (show_log(msg_window, name))
	{
		add_wait_prompt("*** Hit any key for more, 'q' to quit ***",
			log_prompt, name, WAIT_PROMPT_KEY,1);
	}
	else 
	{
		if (msg_fp) 
			fclose(msg_fp);
		set_msg_screen(NULL);
		msg_fp = NULL;
		if (!in_read_log)
			add_wait_prompt("Delete msg log [y/N]? ", remove_away_log, empty_string, WAIT_PROMPT_LINE,1);
	}
}