#!/bin/bash

# Removes an ignore rule for either an email address
# or text in the subject line

# License
# =======
#
# Copyright (C) 2015 Bob Mottram <bob@robotics.uk.to>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.

MYUSERNAME=$USER
EMAIL_ADDRESS=
SUBJECT_TEXT=

function show_help {
    echo ''
    echo 'freedombone-unignore -u [username] -e [mail address] -t [text in subject line]'
    echo ''
    exit 0
}

while [[ $# > 1 ]]
do
key="$1"

case $key in
    -h|--help)
    show_help
    ;;
    -u|--user)
    shift
    MYUSERNAME="$1"
    ;;
    -e|--email)
    shift
    EMAIL_ADDRESS="$1"
    ;;
    -t|--text)
    shift
    SUBJECT_TEXT="$1"
    ;;
    *)
    # unknown option
    ;;
esac
shift
done

if ! [[ $MYUSERNAME && $EMAIL_ADDRESS ]]; then
    if ! [[ $MYUSERNAME && $SUBJECT_TEXT ]]; then
        show_help
    fi
fi

MUTTRC=/home/$MYUSERNAME/.muttrc
PM=/home/$MYUSERNAME/.procmailrc

# unignore if subject line contains text
if [ $SUBJECT_TEXT ]; then
    if ! grep -q "Ignore rule for $SUBJECT_TEXT" $PM; then
        sed -i "/# Ignore rule for $SUBJECT_TEXT/,/# End of ignore rule/d" $PM
    fi
fi

# unignore an email address
if [ $EMAIL_ADDRESS ]; then
    if ! grep -q "Ignore rule for $EMAIL_ADDRESS" $PM; then
        sed -i "/# Ignore rule for $EMAIL_ADDRESS/,/# End of ignore rule/d" $PM
    fi
fi

exit 0