rebase-reminder.yml

name: Rebase reminder
on: [pull_request, pull_request_review]

jobs:
  build:
    name: rebuild-reminder
    runs-on: ubuntu-latest

    permissions:
      contents: 'read'
      pull-requests: 'write'

    steps:
    - uses: actions/checkout@v3
      with:
        fetch-depth: 0
    - name: Find behind count
      id: behind_count
      run: |
        echo "behind_count=$(git rev-list --count ${{ github.event.pull_request.head.sha }}..${{ github.event.pull_request.base.sha }})" >> $GITHUB_OUTPUT
    - name: Find ahead count
      id: ahead_count
      run: |
        echo "ahead_count=$(git rev-list --count ${{ github.event.pull_request.base.sha }}..${{ github.event.pull_request.head.sha }})" >> $GITHUB_OUTPUT
    - name: Find combined count
      id: combined_count
      run: |
        echo "combined_count=$(expr ${{steps.behind_count.outputs.behind_count}} + ${{steps.ahead_count.outputs.ahead_count}})" >> $GITHUB_OUTPUT
    - name: Edit PR comment - rebasing
      if: steps.behind_count.outputs.behind_count > 0 && steps.combined_count.outputs.combined_count > 3
      uses: thollander/actions-comment-pull-request@v2
      with:
        message: |
          Needs rebasing :bangbang:
          behind_count is ${{ steps.behind_count.outputs.behind_count }}
          ahead_count is ${{ steps.ahead_count.outputs.ahead_count }}
        comment_tag: rebasing
    - name: Edit PR comment - no rebasing
      if: steps.behind_count.outputs.behind_count == 0 || steps.combined_count.outputs.combined_count <= 3
      uses: thollander/actions-comment-pull-request@v2
      with:
        message: |
          No need for rebasing :+1:
          behind_count is ${{ steps.behind_count.outputs.behind_count }}
          ahead_count is ${{ steps.ahead_count.outputs.ahead_count }}
        comment_tag: rebasing