auto-merge.yml

name: Auto-Merge

on:
  repository_dispatch:
    types:
      - approve-bot-pr

jobs:
  automerge:
    name: Merge or Rebase
    if: ${{ github.event.client_payload.login == 'cf-buildpacks-eng' || github.event.client_payload.login == 'dependabot[bot]' }}
    runs-on: ubuntu-latest
    steps:

      - name: Checkout
        uses: actions/checkout@v2

      - name: Fetch Pull Request Details
        id: pull_request
        env:
          NUMBER: ${{ github.event.client_payload.number }}
          GITHUB_TOKEN: ${{ secrets.CF_BOT_GITHUB_TOKEN }}
        run: |
          payload="$(
            curl "https://api.github.com/repos/${GITHUB_REPOSITORY}/pulls/${NUMBER}" \
              --silent \
              --location \
              --header "Authorization: token ${GITHUB_TOKEN}"
          )"
          
          echo "::set-output name=mergeable_state::$(echo "${payload}" | jq -r -c .mergeable_state)"

      - name: Merge
        if: ${{ steps.pull_request.outputs.mergeable_state == 'clean' || steps.pull_request.outputs.mergeable_state == 'unstable' }}
        uses: paketo-buildpacks/github-config/actions/pull-request/merge@main
        with:
          token: ${{ secrets.CF_BOT_GITHUB_TOKEN }}
          number: ${{ github.event.client_payload.number }}

      - name: Accept Tracker Story
        if: ${{ steps.pull_request.outputs.mergeable_state == 'clean' || steps.pull_request.outputs.mergeable_state == 'unstable' }}
        run: |
          story_id=${{ github.event.client_payload.tracker_story }}
          if [ "$story_id" != "-1" ]; then
            ## Comment with Github PR link
            curl -X POST \
              -H "X-TrackerToken: ${{ secrets.TRACKER_API_TOKEN }}" \
              -H "Content-Type: application/json" \
              -d "{\"text\": \"Merged in [PR](https://www.github.com/${GITHUB_REPOSITORY}/pull/${NUMBER})\"}" \
              "https://www.pivotaltracker.com/services/v5/projects/${{ secrets.TRACKER_PROJECT_ID }}/stories/$story_id/comments"

            ## Accept story
            curl -X PUT \
              -H "X-TrackerToken: ${{ secrets.TRACKER_API_TOKEN }}" \
              -H "Content-Type: application/json" \
              -d '{"current_state":"accepted"}' \
              "https://www.pivotaltracker.com/services/v5/projects/${{ secrets.TRACKER_PROJECT_ID }}/stories/$story_id"
          fi

      - name: Rebase
        if: ${{ steps.pull_request.outputs.mergeable_state == 'behind' }}
        uses: paketo-buildpacks/github-config/actions/pull-request/rebase@main
        with:
          token: ${{ secrets.CF_BOT_GITHUB_TOKEN }}
          number: ${{ github.event.client_payload.number }}