main.yml

name: CI

on: [push, pull_request]

permissions:
  contents: read

jobs:
  test:
    env:
      MIX_ENV: test
    runs-on: ubuntu-24.04
    steps:
      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          persist-credentials: false

      - uses: erlef/setup-beam@fc68ffb90438ef2936bbb3251622353b3dcb2f93 # v1.24.0
        with:
          otp-version: 27.3.4.12
          elixir-version: 1.18.1

      - run: mix deps.get
      - run: mix format --check-formatted
      - run: mix deps.unlock --check-unused
      - run: MIX_ENV=test mix compile --warnings-as-errors
      - run: mix test

  docker:
    name: Docker
    runs-on: ubuntu-24.04-arm

    permissions:
      contents: 'read'
      id-token: 'write'

    env:
      IMAGE_NAME: 'diff'
      PROJECT_ID: 'hexpm-prod'
      SERVICE_ACCOUNT: ${{ secrets.GCLOUD_SERVICE_ACCOUNT }}
      WORKLOAD_IDENTITY_PROVIDER: ${{ secrets.GCLOUD_WORKFLOW_IDENTITY_POOL_PROVIDER }}

    steps:
      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          persist-credentials: false

      - name: Set short git commit SHA
        run: echo "COMMIT_SHORT_SHA=${GITHUB_SHA::7}" >> $GITHUB_ENV

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@d7f5e7f509e45cec5c76c4d5afdd7de93d0b3df5 # v4.1.0

      - name: Google auth
        id: auth
        uses: 'google-github-actions/auth@7c6bc770dae815cd3e89ee6cdf493a5fab2cc093' # v3.0.0
        if: ${{ github.event_name != 'pull_request' && env.SERVICE_ACCOUNT != '' }}
        with:
          token_format: 'access_token'
          project_id: ${{ env.PROJECT_ID }}
          service_account: ${{ env.SERVICE_ACCOUNT }}
          workload_identity_provider: ${{ env.WORKLOAD_IDENTITY_PROVIDER }}

      - name: Docker Auth
        id: docker-auth
        uses: 'docker/login-action@650006c6eb7dba73a995cc03b0b2d7f5ca915bee' # v4.2.0
        if: ${{ github.event_name != 'pull_request' && env.SERVICE_ACCOUNT != '' }}
        with:
          registry: gcr.io
          username: 'oauth2accesstoken'
          password: '${{ steps.auth.outputs.access_token }}'

      - name: Build and push
        id: build
        uses: docker/build-push-action@f9f3042f7e2789586610d6e8b85c8f03e5195baf # v7.2.0
        with:
          platforms: linux/arm64
          tags: gcr.io/${{ env.PROJECT_ID }}/${{ env.IMAGE_NAME }}:${{ env.COMMIT_SHORT_SHA }}
          push: ${{ github.event_name != 'pull_request' && env.SERVICE_ACCOUNT != '' }}
          cache-from: type=gha
          cache-to: type=gha,mode=max