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#!/bin/bash

# CONTRIBUTORS
make CONTRIBUTORS > _CONTRIBUTORS
if [ ! -s _CONTRIBUTORS ]; then
    # no CONTRIBUTORS means no need to make a release
    # exit without populating new_version
    exit 0
fi

if [ -z "$1" ]; then
    LAST_VERSION=$(git describe --abbrev=0 --tags --always 2> /dev/null)
    NEW_VERSION=$(echo "$LAST_VERSION" | awk '{print ++$1}')
    if [ "$NEW_VERSION" -lt 100 ]; then
        NEW_VERSION="0$NEW_VERSION"
    fi
else
    NEW_VERSION="$1"
fi

printf "#### Contributors\n\n" > CONTRIBUTORS.md
cat _CONTRIBUTORS >> CONTRIBUTORS.md

# Update AUTHORS
make AUTHORS

# Update NEWS.md
cargo install clog-cli
head -2 NEWS.md > NEWS_header.md
tail +2 NEWS.md > NEWS_body.md
printf "dracut-%s\n==========\n" "$NEW_VERSION" > NEWS_header_new.md
cat CONTRIBUTORS.md NEWS_body.md > NEWS_body_with_conttributors.md

# clog will always output both the new release and old release information together
clog -F --infile NEWS_body_with_conttributors.md -r https://github.com/dracutdevs/dracut | sed '1,2d' > NEWS_body_full.md

# Use diff to separate new release information and remove repeated empty lines
diff NEWS_body_with_conttributors.md NEWS_body_full.md | grep -e ^\>\  | sed s/^\>\ // | cat -s > NEWS_body_new.md
cat NEWS_header.md NEWS_header_new.md NEWS_body_new.md NEWS_body_with_conttributors.md > NEWS.md

# message for https://github.com/dracutdevs/dracut/releases/tag
cat -s NEWS_body_new.md CONTRIBUTORS.md > release.md

# dracut-version.sh
printf "#!/bin/sh\n# shellcheck disable=SC2034\nDRACUT_VERSION=%s\n" "$NEW_VERSION" > dracut-version.sh

# Check in AUTHORS and NEWS.md
git config user.name "Dracut Release Bot"
git config user.email "<>"
git commit -m "docs: update NEWS.md and AUTHORS" NEWS.md AUTHORS dracut-version.sh
git push origin master
git tag "$NEW_VERSION" -m "$NEW_VERSION"
git push --tags

# export new version to Github Action
echo "new_version=${NEW_VERSION,,}" >> "${GITHUB_ENV}"