ci.yml

name: CI

on:
  pull_request:
    branches:
      - 'main'
  push:
    branches:
      - 'main'

jobs:
  test-matrix:
    runs-on: ubuntu-latest
    outputs:
      matrix: ${{ steps.set-matrix.outputs.matrix }}
    steps:
      - uses: actions/checkout@v3
      - name: Read file
        id: set-matrix
        run: |
          matrixStringifiedObject="$(jq -c . .github/elixir-test-matrix.json)"
          echo "matrix=$matrixStringifiedObject" >> $GITHUB_OUTPUT
  lint:
    needs: [test-matrix]
    name: Lint on Elixir ${{ matrix.elixir_version }} (OTP ${{ matrix.otp_version }})
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix: ${{ fromJson(needs.test-matrix.outputs.matrix) }}
    steps:
      - uses: actions/checkout@v3
      - uses: erlef/setup-beam@v1
        with:
          version-type: strict
          otp-version: ${{ matrix.otp_version }}
          elixir-version: ${{ matrix.elixir_version }}
      - name: Cache
        uses: actions/cache@v3
        with:
          path: |
            ~/deps
            ~/_build
          key: ${{ runner.os }}-lint-${{ matrix.otp_version }}-${{ matrix.elixir_version }}-${{ hashFiles('**/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
        if: matrix.check_formatted
        run: mix format --check-formatted
      - name: Create plts folder
        run: mkdir plts

      - name: PLTs cache
        uses: actions/cache@v3
        id: plt-cache
        with:
          path: |
             ~/plts
          key: ${{ runner.os }}-${{ runner.arch }}-plts-${{ matrix.otp-version }}-${{ matrix.elixir-version }}-${{ hashFiles('**/mix.lock') }}
      - name: Create PLTs
        if: steps.plt-cache.outputs.cache-hit != 'true'
        run: mix dialyzer --plt

      - name: Dialyze
        run: mix dialyzer --no-check

  test:
    needs: [test-matrix]
    name: Test on Elixir ${{ matrix.elixir_version }} (OTP ${{ matrix.otp_version }})
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix: ${{ fromJson(needs.test-matrix.outputs.matrix) }}
    steps:
      - uses: actions/checkout@v3
      - uses: erlef/setup-beam@v1
        with:
          version-type: strict
          otp-version: ${{ matrix.otp_version }}
          elixir-version: ${{ matrix.elixir_version }}
      - name: Cache
        uses: actions/cache@v3
        with:
          path: |
            ~/deps
            ~/_build
          key: ${{ runner.os }}-test-${{ matrix.otp_version }}-${{ matrix.elixir_version }}-${{ hashFiles('**/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
        if: matrix.check_formatted
      - name: Test
        run: mix test