thumbs.yml

name: Monthly thumbnail refresh

# On the first of each month: re-fetch the publisher previews that are due
# (older than 180 days, licence changed, or new eligible entries), push the
# changed files to a thumbs/<month> branch and open or update one issue with
# the compare link. The repository does not let Actions open pull requests,
# and a token-made pull request would not run CI, so the maintainer opens it
# from the link. It never edits an entry. Rules: site/lib/thumbs.mjs.
on:
  schedule:
    - cron: "0 9 1 * *"
  workflow_dispatch:

permissions:
  contents: write
  issues: write

jobs:
  thumbs:
    runs-on: ubuntu-latest
    timeout-minutes: 30
    steps:
      - name: Checkout
        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1

      - name: Setup Node
        uses: actions/setup-node@949feb2413d6458794dcd2491c4babbbce0c15c1 # v7.1.0
        with:
          node-version-file: .nvmrc

      - name: Ensure ffmpeg
        run: |
          if ! command -v ffmpeg >/dev/null 2>&1; then
            sudo apt-get update -qq && sudo apt-get install -y -qq ffmpeg
          fi
          ffmpeg -version | head -1

      - name: Fetch and resize previews
        id: run
        run: node site/thumbs.mjs --report thumbs-report.md

      - name: Validate the result
        run: node site/validate.mjs

      - name: Push the branch and open or update the issue
        if: steps.run.outputs.changed != '0'
        env:
          GH_TOKEN: ${{ github.token }}
          CHANGED: ${{ steps.run.outputs.changed }}
        run: |
          month=$(date -u +%Y-%m)
          branch="thumbs/${month}"
          git config user.name "github-actions[bot]"
          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
          git switch -c "$branch"
          git add site/thumbs.json site/public/thumbs
          git commit -m "thumbs: monthly refresh ${month} (${CHANGED} changes)"
          git push --force origin "$branch"
          compare="https://github.com/${GITHUB_REPOSITORY}/compare/main...$(printf '%s' "$branch" | sed 's|/|%2F|g')?expand=1"
          { printf 'Open the pull request: %s\n\n' "$compare"; cat thumbs-report.md; } > issue-body.md
          title="Thumbnail refresh ${month}: ${CHANGED} changes"
          existing=$(gh issue list --state open --label "enhancement" --json number,title \
            --jq '[.[] | select(.title | startswith("Thumbnail refresh "))][0].number // empty')
          if [ -n "$existing" ]; then
            gh issue edit "$existing" --title "$title" --body-file issue-body.md
          else
            gh issue create --title "$title" --label "enhancement" --body-file issue-body.md
          fi