#!/bin/bash
# -*- Mode:Shell; indent-tabs-mode:nil; tab-width -*-
#
# Copyright 2022 Kenneth Loafman
#
# This file is part of duplicity.
#
# Duplicity 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.
#
# Duplicity 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 duplicity; if not, write to the Free Software Foundation,
# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

set -e

if [ "$#" -ne 0 ]; then
    echo "usage: $0"
    exit 2
fi

VERSION=`./setup.py --version`
echo "$0 of ${VERSION}"

# which sed to use?
if [ $(uname -s) == "Darwin" ]; then
    SED="gsed"
else
    SED="sed"
fi

echo "Generate CHANGELOG.md"
git config set changelog.format "  * %h: %s"
git config set core.editor "emacs"
git changelog -a -p -t "(Unreleased)" > CHANGELOG.md

# some filters to make things less noisy.
echo "Apply some filters"
cat <<END > /tmp/cruft
/update changelog/ID
/prep for/ID
/version for lp/ID
/crowdin update/ID
/bump version/ID
/change version/ID
/run po\/update.pot/ID
/!minor\s*/ID
/:test|doc:/ID
s/:\s*- /: /g
s/:\s*\* /: /g
s/\s+/ /g
s/^(.*):\s*(ch.|fix|new):(dev|usr|pkg|test|doc):\s*(.*)/\1:\2: \4/ig
END
$SED --in-place --regexp-extended --file /tmp/cruft CHANGELOG.md

# find out if anything has changed
CNT=`git status --porcelain | tee /dev/stderr | wc -l`
if [ "$CNT" -eq 0 ]; then
    echo "*** NOTHING CHANGED, NO COMMITS ***"
    exit 0
fi

# make sure only CHANGELOG.md has changed
CNT=`git status --porcelain | grep -v " M CHANGELOG.md" | wc -l`
if [ "$CNT" -ne 0 ]; then
    echo "*** REPO DIRTY, DO NOT COMMIT ***"
    exit 1
fi
