dependabot-auto-merge.yml

# Copyright (C) 2020 Dremio
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# GitHub workflow to automatically approve and merge dependabot-PRs that
# have passed CI.

name: Dependabot Auto Merge

on:
  workflow_run:
    types:
      - "completed"
    workflows:
      - "CI"

jobs:
  merge:
    name: "Dependabot Auto Merge"
    runs-on: ubuntu-latest

    # Note: the check `github.actor == 'dependabot[bot]'` ensures that auto-approve-and-merge
    # only happens when dependabot triggers the workflow runs - but not when another user pushes.

    if: >
      github.event.workflow_run.event == 'pull_request' &&
      github.event.workflow_run.conclusion == 'success' &&
      github.actor == 'dependabot[bot]' && (
        contains(github.event.workflow_run.head_commit.message, 'ump ')
      ) &&
      github.repository == 'projectnessie/nessie-antlr-runtime'

    steps:
      - name: Information
        uses: "actions/github-script@v6"
        with:
          github-token: "${{ secrets.GITHUB_TOKEN }}"
          script: |
            const pullRequest = context.payload.workflow_run.pull_requests[0]
            const repository = context.repo
            const pullRequestDetails = await github.rest.pulls.get({
              owner: repository.owner,
              repo: repository.repo,
              pull_number: pullRequest.number,
            })
            
            console.log("PR Number: " + pullRequest.number)
            console.log("PR head SHA: " + pullRequest.head.sha)
            console.log("PR head ref: " + pullRequest.head.ref)
            console.log("PR URL: " + pullRequestDetails.html_url)
            console.log(pullRequestDetails)

      - name: Check commit status
        run: |
          echo ${{ secrets.GITHUB_TOKEN }} | gh auth login --with-token
          gh api repos/projectnessie/nessie-antlr-runtime/commits/${{ github.event.workflow_run.head_commit.id }}/check-runs --jq 'if ([.check_runs[] | select(.name | endswith(" release") or startswith("codecov/") or startswith("Report ") | not ) | select(.conclusion != "skipped") | .conclusion // "pending" ] | unique == ["success"]) then "OK" else error("Commit checks are not OK") end'

      - name: "Approve pull request"
        uses: "actions/github-script@v6"
        with:
          github-token: "${{ secrets.GITHUB_TOKEN }}"
          script: |
            const pullRequest = context.payload.workflow_run.pull_requests[0]
            const repository = context.repo

            await github.rest.pulls.createReview({
              event: "APPROVE",
              owner: repository.owner,
              repo: repository.repo,
              pull_number: pullRequest.number,
              commit_id: pullRequest.head.sha,
            })

      - name: "Merge pull request"
        uses: "actions/github-script@v6"
        with:
          # Use the NESSIE_BUILDER secret to tigger CI on main branch
          github-token: "${{ secrets.NESSIE_BUILDER }}"
          script: |
            const pullRequest = context.payload.workflow_run.pull_requests[0]
            const repository = context.repo

            await github.rest.pulls.merge({
              merge_method: "squash",
              owner: repository.owner,
              pull_number: pullRequest.number,
              repo: repository.repo,
              commit_id: pullRequest.head.sha,
            })