name: import-check

on:
  workflow_call:

jobs:
  # Check we don't make the situation with circular imports worse
  import-check:
    runs-on: ubuntu-latest
    steps:
    - uses: julia-actions/setup-julia@v2
      with:
        version: '1.10'
    - uses: julia-actions/cache@v2

    # PR: use the base of the PR as the old commit
    - name: Checkout PR base commit
      if: github.event_name == 'pull_request'
      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
      with:
        ref: ${{ github.event.pull_request.base.sha }}
        path: old
    # not a PR: use the previous commit as the old commit
    - name: Checkout previous commit
      if: github.event_name != 'pull_request'
      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
      with:
        fetch-depth: 2
        path: old
    - name: Checkout previous commit
      if: github.event_name != 'pull_request'
      run: git -C old reset --hard HEAD^

    - name: Checkout new commit
      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
      with:
        path: new
    - name: Install circular import checker
      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
      with:
        repository: haampie/circular-import-fighter
        ref: 38c5473f619493d060d813c72c80eac86b3d2aeb
        path: circular-import-fighter
    - name: Install dependencies
      working-directory: circular-import-fighter
      run: make -j dependencies
    - name: Circular import check
      working-directory: circular-import-fighter
      run: make -j compare "SPACK_ROOT=../old ../new"