#!/bin/sh
#
# monthly_mh_profile_and_sig
#
# AUTHOR:
#   Dan Harkless                                                    <opensource@
#   http://harkless.org/dan/software/                              harkless.org>
# 
# COPYRIGHT:
#   This file is Copyright (C) 1997 by Dan Harkless, and is released under the
#   GNU General Public License <http://www.gnu.org/copyleft/gpl.html>.
#
# USAGE:
#   % monthly_mh_profile_and_sig <monthly_email_prefix> <domain> <sig_file>
#
# EXAMPLE:
#   % monthly_mh_profile_and_sig dan wave.eng.uci.edu mail/sig_m
#
# DESCRIPTION:
#   A companion to monthly_alias -- updates the $1_mmmyy email address in your
#   signature file and on the Alternate-Mailboxes line of your .mh_profile.  See
#   my monthly_alias script for the justification for this.
#
#   In your .mh_profile, you shouldn't have any other aliases on the
#   Alternate-Mailboxes line besides your monthly email address.  Other aliases
#   should go after the comma, on subsequent lines.
#
#   In the same directory as your sig file, there should be a file with the same
#   name as the sig file but with ".template" appended.  It should contain
#   strings with the same names as the date variables below.  They will be
#   replaced by sed with the current values of those variables.  For instance,
#   the string "Month_yyyy" in the sig file would be replaced by the current
#   date in the form "August 1997".
#
# DATE        MODIFICATION
# ==========  ==================================================================
# 1997-01-14  Original.

# Make sure 3 parameters were passed.
if [ $# != 3 ]; then
  progname=`basename $0`
  echo "usage: $progname <monthly_email_prefix> <domain> <sig_file>"
  exit 1
fi

cd  # in case this is being run from the commandline

# Get the date in various formats.
Month_yyyy=`date +"%B %Y"`
mmm=`date +%h | tr "[A-Z]" "[a-z]"`
mmmyy_email=$1_`date +%h%y | tr "[A-Z]" "[a-z]"`@$2
wildcard_email=$1_`date +%h%y | tr "[A-Z]" "[a-z]"`@\*$2

# Change the monthly alias in the .mh_profile.
trap 'rm -f .mh_profile.$$' 0 1 2 3 15
sed "s/Alternate-Mailboxes:.*/Alternate-Mailboxes: $wildcard_email,/g" \
    .mh_profile > .mh_profile.$$
mv .mh_profile.$$ .mh_profile

# Change the monthly alias and date fields in the signature file.
sed -e "s/Month_yyyy/$Month_yyyy/g" \
    -e "s/mmmyy_email/$mmmyy_email/g" \
    -e "s/mmm/$mmm/g" \
    $3.template > $3