name: Elixir CI

on:
  push:
    branches: [master]
    tags-ignore: ["v*"]
  pull_request:
    branches: [master]
  create:
    tags: ["v*"]
jobs:
  build:
    runs-on: ubuntu-latest
    name: OTP ${{matrix.otp}} / Elixir ${{matrix.elixir}}
    strategy:
      matrix:
        otp: ["23"]
        elixir: ["1.10.0"]
    env:
      GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      ASH_CI: true
    steps:
      - run: sudo apt-get install --yes erlang-dev
      - uses: actions/checkout@v2
      - uses: actions/setup-elixir@v1
        with:
          otp-version: ${{matrix.otp}}
          elixir-version: ${{matrix.elixir}}
      - run: mix deps.get
      - uses: actions/cache@v1
        id: cache-deps
        with:
          path: |
            deps
            _build
          key: otp-${{matrix.otp}}-elixir-${{matrix.elixir}}-lock-${{ hashFiles(format('{0}{1}', github.workspace, '/mix.lock')) }}
          restore-keys: otp-${{matrix.otp}}-elixir-${{matrix.elixir}}
      - run: mix deps.get
      - run: mix check
      - run: mix publish
        if: startsWith(github.ref, 'refs/tags/v')
        env:
          HEX_API_KEY: ${{ secrets.HEX_API_KEY }}