neiam /diogramos

# The forge's copy of the image publish. .github/workflows/ci.yml's
# image job pushes to ghcr.io (and the other public registries), but only
# when it runs on GitHub; here the image goes to the forge's bundled
# registry (CI_REGISTRY), as camerite and gitgud do: <registry>/<owner>/<repo>.
#
# No secrets. The forge injects CI_REGISTRY and accepts the per-job
# github.token for push to this repository's own image path.
#
# Tests gate the image, as on GitHub: ci.yml's test job (mix precommit) is
# copied in above the image job, guarded to the forge. ci.yml's test job
# still runs here too: its android job needs it, so this copy is a
# deliberate duplicate.
name: ci (forge)

on:
  push:
    branches: [master]
    tags: ['v*']
  workflow_dispatch:

# A newer push supersedes this run: on a branch or PR the run in
# progress is cancelled; on master it finishes, and only a run still
# waiting is replaced.
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: ${{ github.ref != 'refs/heads/master' }}

jobs:
  test:
    if: github.server_url != 'https://github.com'
    # Self-hosted ARC runners (same as ../angler). Swap for `ubuntu-latest`
    # if you'd rather use GitHub-hosted runners. The Postgres service container
    # requires the runner to support service containers (Docker/dind).
    runs-on: arc-runner-set
    env:
      MIX_ENV: test
      # Under forgejo-runner/act the job runs in a container, so the postgres
      # service is reached by its service name, not localhost.
      POSTGRES_HOST: postgres
      # service is reached at its container port under forgejo-runner
      POSTGRES_PORT: 5432
      # Cap the test DB pool below the Postgres service's default
      # max_connections (100); big CI runners otherwise scale pool to cores×2
      # and exhaust connections.
      POOL_SIZE: "40"
    services:
      postgres:
        image: docker.io/postgres:16-alpine
        env:
          POSTGRES_USER: postgres
          POSTGRES_PASSWORD: postgres
        # config/test.exs connects on 54329 (matches compose.yml), so publish
        # the service container's 5432 on that host port.
        ports:
          - 54329:5432
        options: >-
          --health-cmd "pg_isready -U postgres"
          --health-interval 5s
          --health-timeout 3s
          --health-retries 5
    steps:
      - uses: actions/checkout@v4

      # ARC's default runner image is bare; install the toolchain needed to
      # compile native deps.
      - run: sudo apt-get update && sudo apt-get install -y --no-install-recommends make build-essential
      # Forge fork of erlef/setup-beam: defaults ImageOS to ubuntu-24.04,
      # since forgejo/act injects an unmappable ImageOS from the runs-on label.
      - uses: https://gg.neiam.co/neiam/action-setup-beam@v1
        with:
          # Match the build image in the Dockerfile (OTP >= 27.3.3; 27.2 breaks
          # `mix local.hex` against hex.pm's current TLS chain).
          elixir-version: "1.20.4"
          otp-version: "28.5.0.8"

      - uses: actions/cache@v4
        with:
          path: |
            deps
            _build
          key: ${{ runner.os }}-mix-${{ hashFiles('**/mix.lock') }}
          restore-keys: ${{ runner.os }}-mix-

      - run: mix deps.get

      # `mix precommit` = compile --warnings-as-errors, deps.unlock --unused,
      # format, test (which creates + migrates the test DB).
      - run: mix precommit

  image:
    needs: [test]
    if: github.server_url != 'https://github.com' && github.event_name != 'pull_request'
    runs-on: arc-runner-set
    permissions:
      contents: read
      packages: write
    steps:
      - uses: actions/checkout@v4
      - uses: docker/setup-buildx-action@v3

      # The username is ignored by the token endpoint, but login-action
      # requires it to be non-empty.
      - name: Log in to the forge registry
        uses: docker/login-action@v3
        with:
          registry: ${{ vars.CI_REGISTRY }}
          username: gitgud-actions
          password: ${{ github.token }}

      # Public registries, off on the forge (GitHub pushes them). To push
      # from here too, uncomment these logins and the extra `images:` lines.
      # - name: Log in to GHCR
      #   uses: docker/login-action@v3
      #   with:
      #     registry: ghcr.io
      #     username: ${{ vars.GHCR_USER || github.actor }}
      #     password: ${{ secrets.GHCR_TOKEN }}
      #
      # - name: Log in to Docker Hub
      #   uses: docker/login-action@v3
      #   with:
      #     registry: docker.io
      #     username: ${{ secrets.DOCKERHUB_USER }}
      #     password: ${{ secrets.DOCKERHUB_TOKEN }}
      #
      # - name: Log in to Quay
      #   uses: docker/login-action@v3
      #   with:
      #     registry: quay.io
      #     username: ${{ secrets.QUAY_USERNAME }}
      #     password: ${{ secrets.QUAY_TOKEN }}

      - id: meta
        uses: docker/metadata-action@v5
        with:
          # metadata-action skips '#' lines in its inputs.
          images: |
            ${{ vars.CI_REGISTRY }}/${{ github.repository }}
            # ghcr.io/${{ github.repository }}
            # docker.io/neiam/diogramos
            # quay.io/neiam/diogramos
          tags: |
            type=ref,event=branch
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=sha
            type=raw,value=latest,enable={{is_default_branch}}

      - uses: docker/build-push-action@v6
        with:
          context: .
          platforms: linux/amd64
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=registry,ref=${{ vars.CI_REGISTRY }}/${{ github.repository }}:buildcache
          cache-to: type=registry,ref=${{ vars.CI_REGISTRY }}/${{ github.repository }}:buildcache,mode=max