#!/bin/bash
#
# .---.                  .              .
# |                      |              |
# |--- .--. .-.  .-.  .-.|  .-. .--.--. |.-.  .-. .--.  .-.
# |    |   (.-' (.-' (   | (   )|  |  | |   )(   )|  | (.-'
# '    '     --'  --'  -' -  -' '  '   -' -'   -' '   -  --'
#
#                    Freedom in the Cloud
#

# Adds an email 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-ignore -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

# Ignore if subject line contains text
if [ "$SUBJECT_TEXT" ]; then
    if ! grep -q "Ignore rule for $SUBJECT_TEXT" $PM; then
        echo "# Ignore rule for $SUBJECT_TEXT" >> $PM
        echo ":0" >> $PM
        echo "  * ^Subject:.*$SUBJECT_TEXT" >> $PM
        echo "/dev/null" >> $PM
        echo "# End of ignore rule" >> $PM
        chown $MYUSERNAME:$MYUSERNAME $PM
    fi
fi

# ignore an email address
if [ $EMAIL_ADDRESS ]; then
    if ! grep -q "Ignore rule for $EMAIL_ADDRESS" $PM; then
        echo "# Ignore rule for $EMAIL_ADDRESS" >> $PM
        echo ":0" >> $PM
        echo "  * ^From:.*$EMAIL_ADDRESS" >> $PM
        echo "/dev/null" >> $PM
        echo "# End of ignore rule" >> $PM
        chown $MYUSERNAME:$MYUSERNAME $PM
    fi
fi

PROCMAILLOG=/home/$MYUSERNAME/log
if [ ! -d $PROCMAILLOG ]; then
    mkdir $PROCMAILLOG
    chown -R $MYUSERNAME:$MYUSERNAME $PROCMAILLOG
fi

exit 0