/*-
 * SPDX-License-Identifier: BSD-3-Clause
 *
 * Copyright (c) 1990, 1993, 1994
 *      The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */



#include <sys/types.h>
#include <sys/time.h>

#include <stdio.h>
#include <string.h>
#include <wchar.h>
#include <libxo/xo.h>

#include "extern.h"

/*
 * pr_attime --
 *      Print the time since the user logged in.
 */
int
pr_attime(time_t *started, time_t *now)
{
        static wchar_t buf[256];
        struct tm tp, tm;
        time_t diff;
        const wchar_t *fmt;
        int len, width, offset = 0;

        tp = *localtime(started);
        tm = *localtime(now);
        diff = *now - *started;

        /* If more than a week, use day-month-year. */
        if (diff > 86400 * 7)
                fmt = L"%d%b%y";

        /* If not today, use day-hour-am/pm. */
        else if (tm.tm_mday != tp.tm_mday ||
                 tm.tm_mon != tp.tm_mon ||
                 tm.tm_year != tp.tm_year) {
        /* The line below does not take DST into consideration */
        /* else if (*now / 86400 != *started / 86400) { */
                fmt = use_ampm ? L"%a%I%p" : L"%a%H";
        }

        /* Default is hh:mm{am,pm}. */
        else {
                fmt = use_ampm ? L"%l:%M%p" : L"%k:%M";
        }

        (void)wcsftime(buf, sizeof(buf), fmt, &tp);
        len = wcslen(buf);
        width = wcswidth(buf, len);
        if (xo_get_style(NULL) == XO_STYLE_XML) {
                xo_attr("since", "%lu", (unsigned long)*started);
                xo_attr("delta", "%lu", (unsigned long)diff);
        } else {
                xo_emit("{e:login-time-since/%lu}{e:login-time-delta/%lu}",
                    (unsigned long)*started, (unsigned long)diff);
        }
        if (len == width)
                xo_emit("{:login-time/%-7.7ls/%ls}", buf);
        else if (width < 7)
                xo_emit("{:login-time/%ls}%.*s", buf, 7 - width, "      ");
        else {
                xo_emit("{:login-time/%ls}", buf);
                offset = width - 7;
        }
        return (offset);
}

/*
 * pr_idle --
 *      Display the idle time.
 *      Returns number of excess characters that were used for long idle time.
 */
int
pr_idle(time_t idle)
{
        /* In encoded formats, emit the raw data as well */
        if (xo_get_style(NULL) == XO_STYLE_XML)
                xo_attr("seconds", "%lu", (unsigned long) idle);
        else
                xo_emit("{e:idle-seconds/%lu}", (unsigned long) idle);

        /* If idle more than 36 hours, print as a number of days. */
        if (idle >= 36 * 3600) {
                int days = idle / 86400;
                xo_emit(" {q:idle/%dday%s} ", days, days > 1 ? "s" : " " );
                if (days >= 100)
                        return (2);
                if (days >= 10)
                        return (1);
        }

        /* If idle more than an hour, print as HH:MM. */
        else if (idle >= 3600) {
                xo_emit(" {q:idle/%2d:%02d} ",
                    (int)(idle / 3600), (int)((idle % 3600) / 60));
        }

        else if (idle / 60 == 0)
                xo_emit("     - {q:idle//0}");

        /* Else print the minutes idle. */
        else
                xo_emit("    {q:idle/%2d} ", (int)(idle / 60));

        return (0); /* not idle longer than 9 days */
}