#!/bin/sh

# notmuch-slurp-debbug -- add messages from a Debian bug to notmuch

# Copyright (C) 2018 Sean Whitton
#
# 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/>.

set -e

if [ $# != 1 ]; then
   echo >&2 "$0: usage: $0 BUGNUMBER"
   exit 1
fi

if ! which notmuch >/dev/null 2>&1; then
    echo >&2 "$0: error: this script requires notmuch to be installed"
    exit 1
fi

if ! which bts >/dev/null 2>&1; then
    echo >&2 "$0: error: this script requires the devscripts package"
    exit 1
fi

bug="$1"
dest="$(notmuch config get database.path)"
# ^ this is guaranteed to be a maildir, despite the name

bts --mbox --mailreader 'true %s' show "$bug"
# ^ see #904182 (try using this script ;))

temp="$(mktemp -d)"
mkdir $temp/new $temp/cur $temp/tmp

# note that mb2md won't work; it thinks Debian BTS mboxes contain just
# a single message
mbox2maildir "${XDG_CACHE_HOME:-$HOME/.cache}"/devscripts/bts/"$bug".mbox \
             "$temp"

for f in $temp/*/*; do
    message_id="$(grep -E -i -m 1 -e '^Message-ID:' $f \
                       | cut -d\  -f2 \
                       | sed -e 's/<//' -e 's/>//')"
    match="$(notmuch search --limit=1 id:$message_id | wc -l)"
    if [ "$match" = "0" ]; then
        mdmv "$f" "$DEST"
    fi
done

rm -rf "$temp"

notmuch new