name: Docs — Sync Release Notes

# Keeps website/docs/releases.md and the README's "Recent Updates" block
# in sync with the GitHub Releases API. Source of truth is GitHub Releases.
#
# Triggers (intentionally narrow):
#   - release.published / edited / unpublished / deleted: the only time
#     the synced files can legitimately go stale. Fires on every release
#     event so the docs reflect the new version within ~30 seconds.
#   - workflow_dispatch: manual escape hatch (re-run after a one-off
#     GitHub UI edit to a release body, or to backfill after a downtime).
#
# Why no pull_request / schedule triggers:
#   - PR-time drift-check would fail outsider PRs that touched README for
#     unrelated reasons (e.g. typo fixes) and the contributor has no push
#     access to fix it. The synced files are maintained by the release
#     pipeline, not by PR authors — drift can't logically be introduced
#     by a PR that the workflow couldn't already handle on release.
#   - A daily cron would mask the source-of-truth (release events) and
#     produce mystery commits unattached to a release. Better to let
#     workflow_dispatch handle the rare out-of-band UI edit.
#
# Behavior:
#   - Commits directly to `beta` with [skip ci] in the message — the
#     change is mechanical (re-render from API output), pre-validated,
#     and confined to two well-known files.

on:
  release:
    types: [published, edited, unpublished, deleted]
  workflow_dispatch: {}

permissions:
  contents: read

concurrency:
  group: docs-sync-releases
  cancel-in-progress: false

jobs:
  sync:
    name: Sync release notes
    runs-on: ubuntu-latest
    permissions:
      contents: write
    steps:
      - name: Checkout beta
        uses: actions/checkout@v4
        with:
          ref: beta
          # Full history so the commit lands on a fresh ref tip.
          fetch-depth: 0
          # `sync` needs to push back, so the token must persist here.
          persist-credentials: true
          token: ${{ secrets.GITHUB_TOKEN }}

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: '3.12'

      - name: Sync release notes
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: python tools/sync_release_notes.py

      - name: Commit & push (if anything changed)
        run: |
          set -euo pipefail
          if git diff --quiet -- website/docs/releases.md README.md; then
            echo "No drift — release notes already up to date."
            exit 0
          fi
          git config user.name "github-actions[bot]"
          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
          git add website/docs/releases.md README.md
          git commit -m "docs: sync release notes from GitHub Releases [skip ci]"
          git push origin beta
