build.yml

name: build

on:
  push:
    branches:
      - '**/*'
  workflow_dispatch:

jobs:
  build:
    name: build
    runs-on: ubuntu-24.04
    env:
      ERLANG_VERSION: 26.2.5.5
      ELIXIR_VERSION: 1.17.3
      MINESWEEPER_DATABASE_URL: ecto://minesweeper:minesweeper@localhost/minesweeper
      MINESWEEPER_SECRET_KEY_BASE: secret
    strategy:
      matrix:
        postgres: [12, 13, 14, 15, 16, 17]
    services:
      postgres:
        image: postgres:${{ matrix.postgres }}
        ports:
          - 5432:5432
        env:
          POSTGRES_DB: minesweeper
          POSTGRES_USER: minesweeper
          POSTGRES_PASSWORD: minesweeper
        options: >-
          --health-cmd pg_isready
          --health-interval 10s
          --health-timeout 5s
          --health-retries 5
    steps:
      # https://github.com/actions/checkout
      - name: Checkout the repository
        uses: actions/checkout@v4

      # https://github.com/actions/cache
      - name: Cache build
        uses: actions/cache@v4
        with:
          path: |
            deps
            _build
          key: ${{ runner.os }}-mix-erlang-${{ env.ERLANG_VERSION }}-elixir-${{ env.ELIXIR_VERSION }}-${{ hashFiles('**/mix.lock') }}
          restore-keys: |
            ${{ runner.os }}-mix-erlang-${{ env.ERLANG_VERSION }}-elixir-${{ env.ELIXIR_VERSION }}-

      # https://github.com/erlef/setup-beam
      - name: Install Erlang/OTP & Elixir
        uses: erlef/setup-beam@v1
        with:
          otp-version: ${{ env.ERLANG_VERSION }}
          elixir-version: ${{ env.ELIXIR_VERSION }}

      # https://github.com/asdf-vm/actions#setup
      - name: Install asdf
        uses: asdf-vm/actions/setup@v3
        with:
          asdf_branch: v0.14.1

      - name: Install Node.js with asdf
        run: |
          asdf plugin add nodejs
          asdf install nodejs
          node --version

      - name: Install backend dependencies
        run: |
          mix deps.get

      - name: Install frontend dependencies
        run: |
          npm ci

      - name: Compile the application
        run: |
          mix compile

      - name: Create and migrate the database
        run: |
          mix ecto.create
          mix ecto.migrate

      - name: Run automated tests & measure code coverage for the backend
        id: tests
        run: |
          mix coveralls.html --raise

      - name: Check backend code formatting
        run: |
          mix format --check-formatted

      - name: Check for unused dependencies
        run: |
          mix deps.unlock --check-unused

      - name: Show retired dependencies
        run: |
          mix hex.audit

      - name: Ensure there are no uncommitted changes
        run: |
          git status --porcelain
          test -z "$(git status --porcelain)"