automerge.yml

name: automerge
on:
  schedule:
    - cron: '4 5 * * *'  # Runs at 04:05 (random) UTC every day
  pull_request:
    types:
      - labeled
      - unlabeled
      - synchronize
      - opened
      - edited
      - ready_for_review
      - reopened
      - unlocked
  pull_request_review:
    types:
      - submitted
      - dismissed
  check_suite:
    types:
      - completed
  status: {}
jobs:
  automerge:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
        with:
          fetch-depth: 0  # Ensures all history is fetched

      - name: Get date of the last commit
        id: last_commit_date
        run: |
          LAST_COMMIT_DATE=$(git log -1 --format=%cI)
          echo "Last commit date: $LAST_COMMIT_DATE"
          echo "::set-output name=last_commit_date::$LAST_COMMIT_DATE"

      - name: Calculate days since last commit
        id: days_since_last_commit
        run: |
          from datetime import datetime
          last_commit_date = "${{ steps.last_commit_date.outputs.last_commit_date }}"
          last_commit_datetime = datetime.strptime(last_commit_date, "%Y-%m-%dT%H:%M:%S%z")
          now = datetime.now(last_commit_datetime.tzinfo)
          delta = now - last_commit_datetime
          days_since = delta.days
          echo "Days since last commit: $days_since"
          echo "::set-output name=days_since::$days_since"

      - id: automerge
        name: automerge
        uses: "pascalgn/automerge-action@v0.16.3"
        if: steps.days_since_last_commit.outputs.days_since > 5 && ((github.event_name == 'pull_request' && github.event.action == 'labeled') || github.event_name == 'schedule')
        env:
        # TODO: temporarily disabled to see if all above works
        #  GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
          MERGE_LABELS: automerge
          MERGE_METHOD_LABEL_REQUIRED: true
          MERGE_COMMIT_MESSAGE: automatic
          MERGE_REQUIRED_APPROVALS: 3