patternizer-update.yml

---
name: Weekly Patternizer Update Check

on:
  schedule:
    # Run every Sunday at 2 AM UTC
    - cron: '0 2 * * 0'
  workflow_dispatch:  # Allow manual trigger

jobs:
  patternizer-update:
    name: Check for patternizer changes
    runs-on: ubuntu-latest
    permissions:
      contents: write
      pull-requests: write

    steps:
      - name: Checkout Code
        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          fetch-depth: 0
          persist-credentials: false

      - name: Run patternizer update
        run: |
          podman run --pull=newer -v "$PWD:$PWD:z" -w "$PWD" quay.io/validatedpatterns/patternizer:latest update

      - name: Create or update PR if changes detected
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          gh auth setup-git
          BRANCH="automated/patternizer-update"

          git add -A
          if git diff --cached --quiet; then
            echo "No changes detected after patternizer update"
            exit 0
          fi

          echo "Changes detected after patternizer update:"
          git diff --cached --name-only

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

          # Create or reset the branch to current HEAD (main) and switch to it.
          # -B handles both cases: creates if missing, resets if it exists.
          # Staged changes are preserved since the target commit is the same.
          git checkout -B "$BRANCH"

          git commit -m "chore: update patternizer-managed files"
          git push --force-with-lease origin "$BRANCH"

          # Create PR if one doesn't already exist
          EXISTING_PR=$(gh pr list --head "$BRANCH" --state open --json number --jq '.[0].number')
          if [ -z "$EXISTING_PR" ]; then
            gh pr create \
              --title "chore: automated patternizer update" \
              --body "This PR was automatically created by the weekly patternizer update workflow.

          It contains updates to patternizer-managed files. Please review the changes and merge if appropriate." \
              --base main \
              --head "$BRANCH"
            echo "PR created"
          else
            echo "Existing PR #${EXISTING_PR} updated"
          fi