automerge-release.yaml

name: Automatically merge non-major release PR

on:
  pull_request:
    branches:
      - master
    types:
      - opened

env:
  PR_NUMBER: ${{ github.event.number }}
  PR_BODY: ${{ github.event.pull_request.body }}
jobs:
  merge-release-pr:
    if: ${{ github.event.pull_request.head.ref == 'changeset-release/master' }}
    name: Merge release PR
    runs-on: ubuntu-latest
    permissions:
      contents: write
      id-token: write
      actions: write
      issues: write
      pull-requests: write
    timeout-minutes: 1

    steps:
      - name: GSM Secrets
        id: secrets_manager
        uses: toptal/davinci-github-actions/gsm-secrets@fx-3861-update-google-cloud-and-docker-gha
        with:
          workload_identity_provider: ${{ secrets.IDENTITY_POOL }}
          service_account: ${{ secrets.SA_IDENTITY_POOL }}
          secrets_name: |-
            TOPTAL_DEVBOT_TOKEN:toptal-ci/TOPTAL_DEVBOT_TOKEN

      - name: Parse secrets
        id: parse_secrets
        uses: toptal/davinci-github-actions/expose-json-outputs@master
        with:
          json: ${{ steps.secrets_manager.outputs.secrets }}

      - name: Set ENV Variables
        run: |-
          echo "DEVBOT_TOKEN=${{ steps.parse_secrets.outputs.TOPTAL_DEVBOT_TOKEN }}" >> $GITHUB_ENV

      - name: Merge pull request if the release is not major
        uses: actions/github-script@v7
        with:
          github-token: ${{ env.DEVBOT_TOKEN }}
          script: |
            const { PR_NUMBER, PR_BODY } = process.env
            const repository = context.repo

            const isMajorRelease = PR_BODY.includes("### Major Changes")
            const commentBody = isMajorRelease ?
              "This pull request seems to be a **major** release and will **not** be merged automatically"
              : "This pull request seems to be a **non-major** release and will be merged automatically"

            await github.rest.issues.createComment({
              owner: repository.owner,
              issue_number: PR_NUMBER,
              repo: repository.repo,
              body: commentBody,
            })

            if (!isMajorRelease) {
              await github.rest.pulls.merge({
                merge_method: "squash",
                owner: repository.owner,
                pull_number: PR_NUMBER,
                repo: repository.repo,
              })
            }