name: Maintain Release Merge PR

on:
  push:
    branches:
      - main

jobs:
  update-release-pr:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - name: Setup Git
        run: |
          git config user.name github-actions
          git config user.email github-actions@github.com
      - name: Check for existing PR
        id: find-pr
        uses: juliangruber/find-pull-request-action@v1
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          branch: release
      - uses: actions/checkout@v4
        if: steps.find-pr.outputs.number == ''
        with:
          ref: release
      - name: Reset release branch
        if: steps.find-pr.outputs.number == ''
        run: |
          git fetch origin main:main
          git reset --hard main
      - name: Create/Update PR
        if: steps.find-pr.outputs.number == ''
        uses: peter-evans/create-pull-request@v6
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          commit-message: Update release branch
          title: Merge Release Auto-PR
          body: Merging this PR will invoke release actions          
          branch: auto-update/release