#!/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) 2015-2018 Bob Mottram <bob@freedombone.net>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

PROJECT_NAME='freedombone'

export TEXTDOMAIN=${PROJECT_NAME}-ignore
export TEXTDOMAINDIR="/usr/share/locale"

MYUSERNAME=$USER
EMAIL_ADDRESS=
SUBJECT_TEXT=

function show_help {
    echo ''
    echo $"${PROJECT_NAME}-ignore -u [username] -e [mail address] -t [text in subject line]"
    echo ''
    exit 0
}

while [ $# -gt 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 $SUBJECT_TEXT";
          echo ":0";
          echo "  * ^Subject:.*$SUBJECT_TEXT";
          echo "/dev/null";
          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 $EMAIL_ADDRESS";
        echo ":0";
        echo "  * ^From:.*$EMAIL_ADDRESS";
        echo "/dev/null";
        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