name: rubyspec C-API extensions

inputs:
  builddir:
    required: false
    default: '.'
  make:
    required: false
    default: 'make -s'

outputs:
  key:
    value: >-
      ${{
      !steps.restore.outputs.cache-hit &&
      github.ref == 'refs/heads/master' &&
      steps.config.outputs.key
      }}

runs:
  using: composite

  steps:
    - id: config
      shell: bash
      run: |
        eval $(grep -e '^arch *=' -e '^ruby_version *=' -e '^DLEXT *=' Makefile |
            sed 's/ *= */=/')
        case "${ruby_version}" in
        *+*) key=capiexts-${arch}-${ruby_version}-${{ hashFiles('src/spec/ruby/optional/capi/ext/*.[ch]') }};;
        *)   key=;;
        esac
        echo version=$ruby_version >> $GITHUB_OUTPUT
        echo key="$key" >> $GITHUB_OUTPUT
        echo DLEXT=$DLEXT >> $GITHUB_OUTPUT
      working-directory: ${{ inputs.builddir }}

    - name: Restore previous CAPI extensions
      uses: actions/cache/restore@0400d5f644dc74513175e3cd8d07132dd4860809 # v4.2.4
      id: cache
      with:
        path: ${{ inputs.builddir }}/spec/ruby/optional/capi/ext/
        key: ${{ steps.config.outputs.key }}
      if: ${{ steps.config.outputs.key }}

    - name: Run test-spec with previous CAPI extension binaries
      id: check
      shell: bash
      run: |
        touch spec/ruby/optional/capi/ext/*.$DLEXT
        [ ! -f spec/ruby/optional/capi/ext/\*.$DLEXT ]
        ${{ inputs.make }} SPECOPTS=optional/capi test-spec
      env:
        DLEXT: ${{ steps.config.outputs.DLEXT }}
      working-directory: ${{ inputs.builddir }}
      if: ${{ steps.cache.outputs.cache-hit }}

    - name: Strip CAPI extensions
      id: strip
      shell: bash
      run: |
        rm -f spec/ruby/optional/capi/ext/*.c
        [ "$DLEXT" = bundle ] || # separated to .dSYM directories
        strip spec/ruby/optional/capi/ext/*.$DLEXT
      env:
        DLEXT: ${{ steps.config.outputs.DLEXT }}
      working-directory: ${{ inputs.builddir }}
      if: >-
        ${{true
        && ! steps.cache.outputs.cache-hit
        && github.ref_name == 'master'
        }}

    - name: Save CAPI extensions
      uses: actions/cache/save@0400d5f644dc74513175e3cd8d07132dd4860809 # v4.2.4
      with:
        path: ${{ inputs.builddir }}/spec/ruby/optional/capi/ext/
        key: ${{ steps.config.outputs.key }}
      if: ${{ steps.strip.outcome == 'success' }}

    - shell: bash
      run: |
        echo "::error::Change from ${prev} detected; bump up ABI version"
      env:
        prev: ${{ steps.config.outputs.version }}
      if: ${{ always() && steps.check.outcome == 'failure' }}