name: Elixir

on:
  pull_request:
    branches:
      - 'main'
    types: [opened, reopened, synchronize, labeled]
  push:
    branches:
      - 'main'

jobs:
  # test-matrix:
  #   runs-on: ubuntu-latest
  #   outputs:
  #     matrix: ${{ steps.set-matrix.outputs.matrix }}
  #   steps:
  #     - uses: actions/checkout@v2
  #     - name: Read file
  #       id: set-matrix
  #       run: |
  #         echo "::set-output name=matrix::$(cat ./.github/test-matrix.json | jq -r -s '.|tojson')"
  opentelemetry-phoenix:
    # needs: [test-matrix]
    if: (contains(github.event.pull_request.labels.*.name, 'elixir') && contains(github.event.pull_request.labels.*.name, 'opentelemetry_phoenix'))
    defaults:
      run:
        working-directory: instrumentation/${{ env.app }}
    runs-on: ubuntu-18.04
    name: Opentelemetry Phoenix test on Elixir ${{ matrix.elixir_version }} (OTP ${{ matrix.otp_version }})
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-18.04]
        otp_version: ["24.0.4", "23.3.4.2", "22.3.4.20"]
        elixir_version: ["1.12.2", "1.11.4"]
        rebar3_version: ["3.16.1"]
        include:
          - otp_version: '21.3.8.24'
            elixir_version: '1.11.4'
            rebar3_version: '3.15.2'
            os: ubuntu-18.04
        exclude:
          - otp_version: '21.3.8.24'
            elixir_version: '1.12.1'
    env:
      app: 'opentelemetry_phoenix'
    steps:
      - uses: actions/checkout@v2
      - uses: erlef/setup-beam@v1
        with:
          otp-version: ${{ matrix.otp_version }}
          elixir-version: ${{ matrix.elixir_version }}
          rebar3-version: ${{ matrix.rebar3_version }}
      - name: Cache
        uses: actions/cache@v2
        with:
          path: |
            ${{ env.app }}/deps
            ${{ env.app }}/_build
          key: ${{ runner.os }}-build-${{ matrix.otp_version }}-${{ matrix.elixir_version }}-v3-${{ hashFiles(format('{0}{1}', github.workspace, 'instrumentation/${{ env.app }}/mix.lock')) }}
      - name: Fetch deps
        if: steps.deps-cache.outputs.cache-hit != 'true'
        run: mix deps.get
      - name: Compile project
        run: mix compile --warnings-as-errors
      - name: Check formatting
        run: mix format --check-formatted
      - name: Test
        run: mix test