.github-upgrade-check.yml.sample

# This workflow compares a downstream azimuth-config repository for a specific site with the upstream
# stackhpc/azimuth-config repository to check whether there is a new upstream version available. If a
# newer tag is found in the upstream repository then a pull request is created to the downstream repo
# in order to merge in the changes from the new upstream release.

# To use this workflow in a downstream azimuth-config repository simply copy it into .github/workflows
# and give it an appropriate name, e.g.
# cp .github-upgrade-check.yml.sample .github/workflows/upgrade-check.yml

name: Check for upstream updates
on:
  schedule:
    - cron: "0 9 * * *"
  workflow_dispatch:
jobs:
  check_for_update:
    runs-on: ubuntu-latest
    permissions:
      contents: write
      pull-requests: write
    steps:

      - name: Checkout the config repo
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
          fetch-tags: true

      # Based on equivalent GitLab CI job
      - name: Check for new release
        shell: bash
        run: |
          set -xe

          # Install dependency
          apt update && apt install -y git-crypt

          # Tell git who we are for commits
          git config user.email "${{ github.actor }}-ci@azimuth.ci"
          git config user.name "${{ github.actor }} CI"

          # Create the merge branch and write vars to .mergeenv file
          ./bin/create-merge-branch

      - name: Set release tag output
        id: release_tag
        if: ${{ hashFiles('.mergeenv') }}
        run: source .mergeenv && echo value=$RELEASE_TAG >> $GITHUB_OUTPUT

      - name: Set branch name output
        id: branch_name
        if: ${{ hashFiles('.mergeenv') }}
        run: source .mergeenv && echo value=$BRANCH_NAME >> $GITHUB_OUTPUT

      - name: Remove tmp file
        run: rm .mergeenv
        if: ${{ hashFiles('.mergeenv') }}

      - name: Create Pull Request
        if: ${{ steps.release_tag.outputs.value }}
        uses: peter-evans/create-pull-request@v6
        with:
          base: main
          branch: ${{ steps.branch_name.outputs.value }}
          title: "Upgrade Azimuth to ${{ steps.release_tag.outputs.value }}"
          body: This PR was automatically generated by GitHub Actions.
          commit-message: "Upgrade Azimuth to ${{ steps.release_tag.outputs.value }}"
          delete-branch: true