ex_trainer/.github/workflows/ci.yml

---
# based on:
# 1. https://dev.to/mnishiguchi/basic-github-actions-setup-for-phoenix-apps-m3g
# 2. https://www.jonathanyeong.com/garden/how-to-setup-ci-with-phoenix-github-actions/
name: CI

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

env:
  MIX_ENV: test

jobs:
  dependencies:
    runs-on: ubuntu-20.04
    strategy:
      matrix:
        elixir: ['1.12.1']
        otp: ['24.0.2']
    steps:
      - name: cancel previous execution
        uses: styfle/cancel-workflow-action@0.9.0
        with:
          access_token: ${{ github.token }}
      - name: checkout repo
        uses: actions/checkout@v2
      - name: setup erlang/elixir
        uses: erlef/setup-beam@v1
        with:
          elixir-version: ${{ matrix.elixir }}
          otp-version: ${{ matrix.otp }}
      - name: fecth cached dependencies
        uses: actions/cache@v2
        id: mix-cache
        with:
          path: |
            deps
            _build
            priv/plts
          key: ${{ runner.os }}-${{ matrix.otp }}-${{ matrix.elixir }}-${{ hashFiles('mix.lock') }}
      - name: install dependencies
        if: steps.mix-cache.outputs.cache-hit != 'true'
        run: |
          mkdir -p priv/plts
          mix local.rebar --force
          mix local.hex --force
          mix deps.get
          mix deps.compile
          mix dialyzer --plt
  static-code-analysis:
    needs: dependencies
    runs-on: ubuntu-20.04
    strategy:
      matrix:
        elixir: ['1.12.1']
        otp: ['24.0.2']
    steps:
      - name: cancel previous execution
        uses: styfle/cancel-workflow-action@0.9.0
        with:
          access_token: ${{ github.token }}
      - name: checkout repo
        uses: actions/checkout@v2
      - name: setup erlang/elixir
        uses: erlef/setup-beam@v1
        with:
          elixir-version: ${{ matrix.elixir }}
          otp-version: ${{ matrix.otp }}
      - name: fecth cached dependencies
        uses: actions/cache@v2
        id: mix-cache
        with:
          path: |
            deps
            _build
            priv/plts
          key: ${{ runner.os }}-${{ matrix.otp }}-${{ matrix.elixir }}-${{ hashFiles('mix.lock') }}
      - run: mix format --check-formatted
      - run: mix credo --strict --format flycheck
      - run: mix dialyzer --no-check --quiet --ignore-exit-status --format short
  test:
    needs: dependencies
    runs-on: ubuntu-20.04
    strategy:
      matrix:
        elixir: ['1.12.1']
        otp: ['24.0.2']
    services:
      db:
        image: 'postgres:13.3-alpine'
        ports:
          - '5432:5432'
        env:
          POSTGRES_USER: postgres
          POSTGRES_PASSWORD: postgres
        options: >-
          --health-cmd pg_isready
          --health-interval 10s
          --health-timeout 5s
          --health-retries 5
    steps:
      - name: cancel previous execution
        uses: styfle/cancel-workflow-action@0.9.0
        with:
          access_token: ${{ github.token }}
      - name: checkout repo
        uses: actions/checkout@v2
      - name: setup erlang/elixir
        uses: erlef/setup-beam@v1
        with:
          elixir-version: ${{ matrix.elixir }}
          otp-version: ${{ matrix.otp }}
      - name: fecth cached dependencies
        uses: actions/cache@v2
        id: mix-cache
        with:
          path: |
            deps
            _build
            priv/plts
          key: ${{ runner.os }}-${{ matrix.otp }}-${{ matrix.elixir }}-${{ hashFiles('mix.lock') }}
      - run: mix test --cover --trace --slowest 10
        env:
          POSTGRES_USER: postgres
          POSTGRES_PASS: postgres