name: Code Quality

on:
  push:
    branches: ["main"]
  pull_request:
    branches: ["main"]

jobs:
  code-quality:
    runs-on: ubuntu-latest
    name: Code Quality (Elixir ${{matrix.elixir}} OTP ${{matrix.otp}})
    strategy:
      matrix:
        otp: ['26.0']
        elixir: ['1.15']

    services:
      db:
        image: postgres:15
        ports: ['5432:5432']
        env:
          POSTGRES_PASSWORD: postgres
        options: >-
          --health-cmd pg_isready
          --health-interval 10s
          --health-timeout 5s
          --health-retries 5

    steps:
    - name: Checkout repository
      uses: actions/checkout@v4

    - name: Set up Elixir
      uses: erlef/setup-beam@v1
      with:
        elixir-version: ${{matrix.elixir}}
        otp-version: ${{matrix.otp}}

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

    - name: Restore compiled code cache
      uses: actions/cache@v4
      with:
        path: _build
        key: ${{ runner.os }}-build-${{ matrix.otp }}-${{ matrix.elixir }}-${{ hashFiles('**/mix.lock') }}
        restore-keys: |
          ${{ runner.os }}-build-${{ matrix.otp }}-${{ matrix.elixir }}-

    - name: Install dependencies
      run: mix deps.get

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

    - name: Compile with warnings as errors
      run: mix compile --warnings-as-errors

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

    - name: Run tests
      run: mix test
      env:
        POSTGRES_PASSWORD: postgres

    - name: Run precommit (should pass if all above passed)
      run: mix precommit
      env:
        POSTGRES_PASSWORD: postgres