ci.yml

---
name: Tests and Checks
on:
  push:
    branches:
      - master
      - develop
  pull_request:
    branches:
      - master
      - develop
  workflow_dispatch:
jobs:
  ci:
    name: Run checks and tests over ${{matrix.otp_vsn}} and ${{matrix.os}}
    runs-on: ${{matrix.os}}
    strategy:
      matrix:
        otp_vsn: [
            '22.0', '22.1', '22.2', '22.3',
            '23.0', '23.1', '23.2', '23.3',
            '24.0', '24.1', '24.2', '24.3',
            '25.0', '25.1', '25.2', '25.3',
            '26.0', '26.1', '26.2'
        ]
        os: ['ubuntu-20.04']
    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - id: otp-version-to-rebar3-version
        name: "Read #{OTP version => rebar3 version} map"
        uses: juliangruber/read-file-action@v1
        with:
          path: ./.github/workflows/otp_version_to_rebar3_version.json

      - id: setup-beam
        name: Setup BEAM
        uses: erlef/setup-beam@v1
        with:
          otp-version: ${{matrix.otp_vsn}}
          # rebar3-version: https://stackoverflow.com/a/64405821
          rebar3-version: |
            ${{ fromJson(steps.otp-version-to-rebar3-version.outputs.content)[matrix.otp_vsn] }}
        env:
          GITHUB_TOKEN: ${{ github.token }}

      - name: Set dynamic env (1)
        run: |
          echo "prev_github_run_number=$((${{github.run_number}} - 1))" >> "$GITHUB_ENV"
          echo "build_cache_prefix=_build-cache-for-os-${{runner.os}}-otp-${{matrix.otp_vsn}}-rebar3-${{steps.setup-beam.outputs.rebar3-version}}" >> "$GITHUB_ENV"

      - name: Set dynamic env (2)
        run: |
          echo "build_cache_prefix_with_hash=${{env.build_cache_prefix}}-hash-${{hashFiles('rebar.lock')}}" >> "$GITHUB_ENV"

      - name: Restore cached build artifacts
        uses: actions/cache/restore@v3
        with:
          path: _build
          key: ${{env.build_cache_prefix_with_hash}}-${{env.prev_github_run_number}}
          restore-keys: |-
            ${{env.build_cache_prefix_with_hash}}-
            ${{env.build_cache_prefix}}-

      - name: Run Tests
        run: make test

      - name: Run Checks
        run: make check

      - name: Save build artifacts to cache
        if: always()
        uses: actions/cache/save@v3
        with:
          path: _build
          key: ${{env.build_cache_prefix_with_hash}}-${{github.run_number}}