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56 changes: 28 additions & 28 deletions .github/workflows/latest.yml
Original file line number Diff line number Diff line change
Expand Up @@ -21,52 +21,52 @@ jobs:
- name: Fetch all tags
run: git fetch --tags --force

- name: Determine highest stable semver tag
id: semver
- name: Resolve latest release tag from GitHub API
id: latest_release
env:
GH_TOKEN: ${{ github.token }}
shell: bash
run: |
set -euo pipefail

HIGHEST_TAG="$(
git tag -l \
| grep -E '^(v)?[0-9]+\.[0-9]+\.[0-9]+$' \
| sort -V \
| tail -n 1
TAG_NAME="$(
gh api \
-H "Accept: application/vnd.github+json" \
/repos/${{ github.repository }}/releases/latest \
--jq '.tag_name'
)"

if [ -z "${HIGHEST_TAG:-}" ]; then
echo "No stable semantic version tags found."
if [ -z "${TAG_NAME:-}" ] || [ "${TAG_NAME}" = "null" ]; then
echo "Failed to resolve latest release tag."
exit 1
fi

echo "highest_tag=$HIGHEST_TAG" >> "$GITHUB_OUTPUT"
if ! git rev-parse -q --verify "refs/tags/$TAG_NAME" >/dev/null; then
echo "Latest release tag '$TAG_NAME' does not exist in git refs."
exit 1
fi

- name: Read published release tag
id: release
shell: bash
run: |
set -euo pipefail
echo "release_tag=${{ github.event.release.tag_name }}" >> "$GITHUB_OUTPUT"
TARGET_SHA="$(git rev-list -n 1 "$TAG_NAME")"

- name: Stop if published release is not the highest stable semver tag
if: steps.release.outputs.release_tag != steps.semver.outputs.highest_tag
shell: bash
run: |
echo "Published release tag: ${{ steps.release.outputs.release_tag }}"
echo "Highest stable semver tag: ${{ steps.semver.outputs.highest_tag }}"
echo "Skipping latest tag update."
echo "tag_name=$TAG_NAME" >> "$GITHUB_OUTPUT"
echo "target_sha=$TARGET_SHA" >> "$GITHUB_OUTPUT"

- name: Move latest tag to the published highest release tag
if: steps.release.outputs.release_tag == steps.semver.outputs.highest_tag
echo "Latest release tag: $TAG_NAME"
echo "Target SHA: $TARGET_SHA"

- name: Move latest tag to latest release
shell: bash
run: |
set -euo pipefail

TARGET_TAG="${{ steps.release.outputs.release_tag }}"
TARGET_SHA="$(git rev-list -n 1 "$TARGET_TAG")"
TARGET_TAG="${{ steps.latest_release.outputs.tag_name }}"
TARGET_SHA="${{ steps.latest_release.outputs.target_sha }}"

git config user.name "github-actions[bot]"
git config user.email "41898282+github-actions[bot]@users.noreply.github.com"

git tag -fa latest "$TARGET_SHA" -m "Update latest -> $TARGET_TAG"
# Create/update lightweight tag so tools can resolve it as a normal commit ref
git tag -f latest "$TARGET_SHA"
git push origin refs/tags/latest --force

echo "Updated latest -> $TARGET_TAG ($TARGET_SHA)"
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