#!/usr/bin/env bash

SPDX-License-Identifier: Apache-2.0

Copyright Authors of Cilium

DIR=$(dirname $(readlink -ne $BASH_SOURCE)) source $DIR/lib/common.sh source $DIR/../backporting/common.sh

set -e set -o pipefail

MAJ_REGEX='[0-9]+.[0-9]+' VER_REGEX='[0-9]+.[0-9]+.[0-9]+(-(pre|rc).[0-9]+)?' PRE_REGEX='[0-9]+.[0-9]+.[0-9]+-(pre|rc).[0-9]+' REGEX_FILTER_DATE='s/^([-0-9]+).*/\1/' PROJECTS_REGEX='s/.projects/([0-9]+)./\1/' ACTS_YAML=".github/maintainers-little-helper.yaml" REMOTE="$(get_remote)"

latest_stable=""

$1 - release branch

$2 - latest release for the target branch (maybe vX.Y+1* for prerelease)

#3 - git tree path to commit object, eg tree/ or commits/

$4 - regex to strip out constant release info from a release line

update_release() { old_branch="$1" latest="$2" obj_regex="$3" rem_branch_regex="$4"

new_branch=$(echo $latest | sed 's/\('$MAJ_REGEX'\).*/v\1/')
current=$(grep "$obj_regex$old_branch" README.rst \
          | sed 's/^.*'"$obj_regex"'.*tag\/v\('"$rem_branch_regex"'\).*$/\1/')
old_date=$(git log -1 -s --format="%cI" v$current | sed "$REGEX_FILTER_DATE")
new_date=$(git log -1 -s --format="%cI" $latest | sed "$REGEX_FILTER_DATE")
elease=$(echo $old_branch | sed 's/v//')

old_proj=""
new_proj=""
if grep -qF "$elease" $ACTS_YAML; then
    old_proj=$(grep -F "$elease" -A 1 $ACTS_YAML | grep projects | sort | uniq \
               | sed "$PROJECTS_REGEX")
    new_proj=$(git show $REMOTE/$old_branch:$ACTS_YAML | grep projects \
               | sed "$PROJECTS_REGEX")
fi

printf "%10s %10s %10s %10s\n" "current" "old_date" "new_date" "elease"
printf "%10s %10s %10s %10s\n" $current  $old_date  $new_date  $elease

# Do not replace vX.Y-rc.A with vX.Y-pre.B. This situation arises after
# cutting a patch release, before a new minor release is cut. The
# README.rst contains a reference to a -rc tag from the forked branch for
# the next minor release, and we shouldn't overwrite it with the latest,
# oldest -pre tag from the main branch.
if [[ "$current" =~ "-rc." && "$latest" =~ "-pre." && \
    "${current%-rc.*}" == "${latest%-pre.*}" &&
    "$(date -d "$old_date" '+%s')" -gt "$(date -d "$new_date" '+%s')" ]]; then
    echo "Skipping $old_branch:"
    echo "  $current on $old_date is a release candidate"
    echo "  $latest on $new_date is an older preview"
    return
fi

echo "Updating $old_branch:"
echo "  $current on $old_date with project $old_proj to"
echo "  $latest on $new_date with project $new_proj"
sed -i '/'$obj_regex'/s/'$old_branch'\(.*\)'$old_date'/'$new_branch'\1'$new_date'/g' README.rst
sed -i '/'$obj_regex'/s/v'$current'/v'$latest'/g' README.rst
if [ -n $old_proj ]; then
    sed -i 's/\(projects\/\)'$old_proj'/\1'$new_proj'/g' $ACTS_YAML
fi

}

$1 - git tree path to commit object, eg tree/ or commits/

check_table() { obj_regex="$1"

readarray -t table < <(grep -C 1 "$obj_regex" README.rst)

len=""
for line in "${table[@]}"; do
    if [ -z $len ]; then
        len="$(echo $line | wc -c)"
        continue
    fi
    if [ "$(echo "$line" | wc -c)" != "$len" ]; then
        >&2 echo "The following table is malformed, please fix it:"
        for l in "${table[@]}"; do
            >&2 echo "$l"
        done
        exit 1
    fi
done

}

for release in $(grep "Release Notes" README.rst
| sed 's/.tree/(v'"$MAJ_REGEX"')./\1/'); do latest=$(git describe --tags $REMOTE/$release
| sed 's/v//' | sed 's/('"$VER_REGEX"').*/\1/') if [ -z "$latest_stable" ]; then # the first release in the list is the latest stable latest_stable=$latest echo "v$latest_stable" > stable.txt echo '{"results":[{"slug":"v'"$(echo "${latest_stable}" | grep -Eo '[0-9]+.[0-9]+')"'"}]}' > Documentation/_static/stable-version.json fi if grep -q -F $latest README.rst; then continue fi

update_release $release $latest "tree\/" "$VER_REGEX"

done check_table "tree/v1"

for release in $(grep "$PRE_REGEX" README.rst
| sed 's/.commits/(v'"$MAJ_REGEX"')./\1/'); do latest=$(git describe --tags $REMOTE/main
| sed 's/v//' | sed 's/('"$PRE_REGEX"').*/\1/') if grep -q -F $latest README.rst; then continue fi

update_release $release $latest "commits\/" "$PRE_REGEX"

done check_table "commits/v1"

git add README.rst stable.txt Documentation/_static/stable-version.json $ACTS_YAML if ! git diff-index --quiet HEAD -- README.rst stable.txt Documentation/_static/stable-version.json $ACTS_YAML; then git commit -s -m "README: Update releases" echo "README.rst and stable.txt updated, submit the PR now." else echo "No new releases found." fi