pre-production-pipeline.yml

name: Pre-Prod CI/CD Pipeline

on:
  pull_request:
  pull_request_target: # for dependabot, see: https://github.com/dependabot/dependabot-core/issues/3253#issuecomment-841656411
  workflow_dispatch:

jobs:
  build:
    if: |
      (github.event_name == 'pull_request' && github.actor != 'dependabot[bot]') ||
      (github.event_name == 'pull_request_target' && github.actor == 'dependabot[bot]') ||
      (github.event_name == 'workflow_dispatch')
    environment:
      name: build
    name: Build & Test
    runs-on: ubuntu-latest
    steps:
      - name: Checkout Code
        uses: actions/checkout@v3
        with:
          ref: ${{ github.event.pull_request.head.sha }}

      - uses: actions/setup-java@v3
        with:
          distribution: temurin
          java-version: 17

      - name: Cache Gradle packages
        uses: actions/cache@v2
        with:
          path: |
            ~/.gradle/caches
            ~/.gradle/wrapper
          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
          restore-keys: |
            ${{ runner.os }}-gradle-

      - name: Check Code linter
        run: ./gradlew spotlessCheck

      - name: Build
        run: ./gradlew build -x test

  dependabot-merge:
    name: Automatically Apply and Merge Dependabot Patches
    runs-on: ubuntu-latest
    needs: build
    permissions:
      pull-requests: write
      contents: write
    if: ${{ github.event.pull_request.user.login == 'dependabot[bot]' }}
    steps:
      - name: Dependabot metadata
        id: dependabot-metadata
        uses: dependabot/fetch-metadata@v1.3.6

      - name: Display metadata
        run: |
          echo ${{ steps.dependabot-metadata.outputs.dependency-names }}
          echo ${{ steps.dependabot-metadata.outputs.update-type }}

      - uses: actions/checkout@v3

      - name: Approve PR
        run: |
          gh pr checkout "$PR_URL"
          if [ "$(gh pr status --json reviewDecision -q .currentBranch.reviewDecision)" != "APPROVED" ];
          then gh pr review --approve "$PR_URL"
          else echo "PR already approved, skipping additional approvals to minimize emails/notification noise.";
          fi
        env:
          PR_URL: ${{ github.event.pull_request.html_url }}
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Merge PR
        # if: steps.dependabot-metadata.outputs.update-type == 'version-update:semver-patch'
        run: gh pr merge --auto --squash "$PR_URL"
        env:
          PR_URL: ${{ github.event.pull_request.html_url }}
          GH_TOKEN: ${{ secrets.PIPELINE_TOKEN }}