keep-binary-updated.yml

---
name: Keep binary updated
# Periodically rebuild from the upstream "latest" releases, then raise a new
# pull-request if the binary file changed.
#
# Cribs heavily from this example:
# https://github.com/peter-evans/create-pull-request/blob/main/docs/examples.md#use-case-create-a-pull-request-to-modifyfix-pull-requests

on:
  workflow_dispatch:
  schedule:
    # Runs every night around 4:20am EST/1:20am PST
    - cron: "20 8 * * *"

jobs:
  keep-binary-up-to-date:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - name: Regenerate binary
        run: make
      - name: Did anything change?
        id: vars
        run: |
          branchname="binary-update/${{ github.ref_name }}"
          echo "branchname=${branchname}" >> $GITHUB_OUTPUT
          binaryupdated=$(git status --porcelain | cut -d ' ' -f 2 | wc -l)
          echo "binaryupdated=${binaryupdated}" >> $GITHUB_OUTPUT
      - name: Create PR with changes
        if: steps.vars.outputs.binaryupdated != 0
        uses: peter-evans/create-pull-request@v4
        with:
          commit-message: Update binary for ${{ github.ref_name }}
          title: Update caddy binary for ${{ github.ref_name }}
          body: This is an auto-generated PR to add an updated binary on ${{ github.ref_name }}.
          labels: binary-update, automated-pr
          branch: ${{ steps.vars.outputs.branchname }}
          base: ${{ github.ref_name }}