#!/bin/bash -
# bugs-in-changelog.sh
# Copyright (C) 2009-2023 Red Hat Inc.
#
# 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 2 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, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

# Used when preparing the release notes.  This script looks at the
# bugs noted in the git changelog since the last stable release (or
# any release).  To use it, the only parameter should be the git
# commit range, eg:
#
#   ./bugs-in-changelog.sh "1.0.89.."

if [ -z "$1" ]; then
    echo "$0 git-commit-range"
    exit 1
fi

# Comma-separated list of Bugzilla IDs.
bugids=$(
    git log "$1" |
    grep -Eio 'RHBZ#[0-9]+|https?://bugzilla.redhat.com/[a-z\.\?/_=]*[0-9]+' |
    sed 's/^[^0-9]*//' |
    sort -u |
    tr '\n' ',' |
    sed 's/,$//'
)

#echo bugids "$bugids"

# Filter out any bugs which may still be in NEW or ASSIGNED.
#
# Ensure user is logged in, otherwise bugzilla will silently truncate
# the number of responses.  To log in, see "API KEYS" in bugzilla(1).
bugzilla \
    --ensure-logged-in \
    query \
    -b "$bugids" \
    -s MODIFIED,POST,ON_QA,PASSES_QA,VERIFIED,RELEASE_PENDING,CLOSED \
    --component libguestfs \
    --outputformat='%{bug_id} %{short_desc}' |
    sort -n -r |
    perl -pe '
        s{([0-9]+)\s+(.*)}{
        sprintf ("=item L<https://bugzilla.redhat.com/%s>\n\n%s\n",
                 $1, $2)
        }xe'