ci.yml

name: CI

on:
  pull_request:
  push:
  workflow_dispatch:

jobs:
  mix_test:
    runs-on: ubuntu-20.04
    env:
      MIX_ENV: test
      FORCE_BUILD: true

    name: Elixir ${{ matrix.pair.elixir }} / OTP ${{ matrix.pair.otp }}

    strategy:
      fail-fast: false
      matrix:
        include:
          - pair:
              elixir: "1.14.4"
              otp: "26.0"
            lint: lint
          - pair:
              elixir: "1.12.3"
              otp: "24.3"
    steps:
      - uses: actions/checkout@v3

      - uses: erlef/setup-beam@v1
        id: beam
        with:
          otp-version: ${{matrix.pair.otp}}
          elixir-version: ${{matrix.pair.elixir}}
          version-type: "strict"

      - name: Install Rust toolchain
        uses: dtolnay/rust-toolchain@stable

      - name: Cache deps
        id: cache-deps
        uses: actions/cache@v3
        env:
          cache-name: cache-elixir-deps
        with:
          path: deps
          key: ${{ runner.os }}-mix-${{ env.cache-name }}-${{ hashFiles('**/mix.lock') }}
          restore-keys: |
            ${{ runner.os }}-mix-${{ env.cache-name }}-

      - name: Cache compiled build
        id: cache-build
        uses: actions/cache@v3
        env:
          cache-name: cache-compiled-build
        with:
          path: _build
          key: ${{ runner.os }}-mix-${{ env.cache-name }}-${{ matrix.pair.elixir }}-${{ matrix.pair.otp }}-${{ hashFiles('**/mix.lock') }}
          restore-keys: |
            ${{ runner.os }}-mix-${{ env.cache-name }}-${{ matrix.pair.elixir }}-${{ matrix.pair.otp }}-
            ${{ runner.os }}-mix-${{ env.cache-name }}-
            ${{ runner.os }}-mix-

      - name: Cache NIF build
        uses: actions/cache@v3
        with:
          path: |
            ~/.cargo/bin/
            ~/.cargo/registry/index/
            ~/.cargo/registry/cache/
            ~/.cargo/git/db/
            native/mail_parser_nif/target/
          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}

      - name: Clean to rule out incremental build as a source of flakiness
        if: github.run_attempt != '1'
        run: |
          mix deps.clean --all
          mix clean
        shell: sh

      - name: Install Dependencies
        run: mix deps.get

      - name: Spell check
        uses: crate-ci/typos@master
        if: ${{ matrix.lint }}

      - run: mix format --check-formatted
        if: ${{ matrix.lint }}

      - run: mix deps.unlock --check-unused
        if: ${{ matrix.lint }}

      - run: mix deps.compile

      - run: mix compile --warnings-as-errors
        if: ${{ matrix.lint }}

      - run: mix test