name: build
on:
  push:
    branches: [master]
  pull_request: {}

permissions:
  contents: read

jobs:
  discover_build_logic_change:
    if: github.event_name == 'pull_request'
    runs-on: ubuntu-slim
    env:
      FULL_OS_MATRIX: '[
        "macos-14",
        "macos-15",
        "macos-15-intel",
        "macos-26",
        "macos-26-intel",
        "ubuntu-22.04",
        "ubuntu-22.04-arm",
        "ubuntu-24.04",
        "ubuntu-24.04-arm"
      ]'
    outputs:
      os: ${{ steps.detect.outputs.os }}
    steps:
      - uses: actions/checkout@v7
      - run: git fetch origin "$GITHUB_BASE_REF"
      - id: detect
        shell: bash
        run: |
          if [[ -n $(git diff --name-only "origin/$GITHUB_BASE_REF" -- \
                       plugins/python-build/bin/python-build \
                       .github/actions/build-python/action.yml \
                       .github/workflows/build.yml) ]]
          then
            printf "%s\n" "os<<!" "$FULL_OS_MATRIX" "!" >> "$GITHUB_OUTPUT"
          fi

  build:
    needs: discover_build_logic_change
    # Run when the detection job succeeded *or was skipped* -- but not failed
    if: ${{ !cancelled() && !failure() }}
    strategy:
      fail-fast: false
      matrix:
        os: ${{ fromJson(needs.discover_build_logic_change.outputs.os || '["macos-latest","ubuntu-latest"]') }}
        python-version:
          - "3.10"
          - "3.11"
          - "3.12"
          - "3.13"
          - "3.14"
    runs-on: ${{ matrix.os }}
    steps:
      - uses: actions/checkout@v7
      - uses: ./.github/actions/build-python
        with:
          python-version: ${{ matrix.python-version }}