ci.yml

# Multi-OS dogfood: mb_pre_commit_setup() must configure + install the Git hook everywhere we care about.
name: CI

on:
  push:
    branches: [main, master]
  pull_request:
  workflow_dispatch:
    inputs:
      cmake_preset:
        description: Configure / build preset (see CMakePresets.json)
        type: choice
        options:
          - ci
          - default
          - release
          - dev-verbose
        default: ci
      run_workflow_preset:
        description: Also run cmake --workflow (dev | ship | ci)
        type: boolean
        default: false

permissions:
  contents: read

concurrency:
  group: ci-${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

env:
  PYTHONUTF8: "1"
  PYTHONIOENCODING: utf-8

jobs:
  cmake:
    name: cmake · ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    defaults:
      run:
        shell: bash
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-24.04, windows-latest, macos-14]

    env:
      CMAKE_PRESET: >-
        ${{
          github.event_name == 'workflow_dispatch'
          && github.event.inputs.cmake_preset
          || 'ci'
        }}

    steps:
      - name: Checkout
        uses: actions/checkout@v6
        with:
          fetch-depth: 0

      - name: Shipped example config matches repo root
        run: cmp -s configs/v4/.pre-commit-config.yaml .pre-commit-config.yaml

      - name: Set up Python
        uses: actions/setup-python@v6
        with:
          python-version: "3.12"

      # Preset schema v10 requires CMake ≥ 4.0 (see CMakePresets.json). mb-pre-commit.cmake needs ≥ 3.21.
      - name: Install CMake and Ninja
        run: |
          python -m pip install --upgrade pip
          python -m pip install "cmake>=4.0,<5" "ninja>=1.11"

      - name: Tool versions
        id: versions
        run: |
          cmake --version
          ninja --version
          python --version
          {
            echo "cmake<<EOF"
            cmake --version | head -n1
            echo EOF
            echo "ninja<<EOF"
            ninja --version
            echo EOF
          } >> "$GITHUB_OUTPUT"

      - name: Configure + build (preset)
        run: |
          cmake --preset "$CMAKE_PRESET"
          cmake --build --preset "$CMAKE_PRESET"

      - name: Sweep (pre-commit all files via CMake target)
        run: cmake --build --preset "$CMAKE_PRESET" --target mb-pre-commit-sweep

      - name: Optional workflow preset
        if: >-
          github.event_name == 'workflow_dispatch'
          && github.event.inputs.run_workflow_preset == 'true'
        run: |
          case "${{ github.event.inputs.cmake_preset }}" in
            ci)         cmake --workflow --preset ci ;;
            default)    cmake --workflow --preset dev ;;
            dev-verbose) cmake --workflow --preset dev ;;
            release)    cmake --workflow --preset ship ;;
            *)          cmake --workflow --preset ci ;;
          esac

      - name: Verify Git hook was installed
        run: |
          test -f .git/hooks/pre-commit
          if [[ "${{ runner.os }}" != "Windows" ]]; then
            test -x .git/hooks/pre-commit
          fi

      - name: Job summary
        if: success()
        run: |
          {
            echo "## CMake CI"
            echo ""
            echo "| | |"
            echo "|---|---|"
            echo "| **Runner** | \`${{ matrix.os }}\` |"
            echo "| **Preset** | \`$CMAKE_PRESET\` |"
            echo "| **CMake** | ${{ steps.versions.outputs.cmake }} |"
            echo "| **Ninja** | ${{ steps.versions.outputs.ninja }} |"
            echo ""
            echo "Hook present at \`.git/hooks/pre-commit\`."
          } >> "$GITHUB_STEP_SUMMARY"

  unix-makefiles-smoke:
    name: CMake (Ubuntu · Unix Makefiles)
    runs-on: ubuntu-24.04
    defaults:
      run:
        shell: bash

    steps:
      - uses: actions/checkout@v6

      - name: Shipped example config matches repo root
        run: cmp -s configs/v4/.pre-commit-config.yaml .pre-commit-config.yaml

      - uses: actions/setup-python@v6
        with:
          python-version: "3.12"

      - name: Install CMake (no Ninja — exercise Makefiles preset)
        run: |
          python -m pip install --upgrade pip
          python -m pip install "cmake>=4.0,<5"
          sudo apt-get update
          sudo apt-get install -y --no-install-recommends make

      - name: Configure + build
        run: |
          cmake --preset unix-makefiles
          cmake --build --preset unix-makefiles

      - name: Sweep (pre-commit all files)
        run: cmake --build --preset unix-makefiles --target mb-pre-commit-sweep

  dependabot-automerge:
    name: Dependabot auto-merge
    needs: [cmake, unix-makefiles-smoke]
    runs-on: ubuntu-latest
    if: >
      github.event_name == 'pull_request' &&
      github.event.pull_request.user.login == 'dependabot[bot]' &&
      !github.event.pull_request.draft
    permissions:
      contents: write
      pull-requests: write
    steps:
      - name: Fetch Dependabot metadata
        id: metadata
        uses: dependabot/fetch-metadata@v2.5.0
        with:
          github-token: "${{ secrets.GITHUB_TOKEN }}"

      - name: Merge patch, minor, and pre-commit updates
        if: >
          steps.metadata.outputs.update-type == 'version-update:semver-patch' ||
          steps.metadata.outputs.update-type == 'version-update:semver-minor' ||
          steps.metadata.outputs.update-type == 'security-update:semver-patch' ||
          steps.metadata.outputs.update-type == 'security-update:semver-minor' ||
          steps.metadata.outputs.package-ecosystem == 'pre_commit'
        run: gh pr merge --auto --squash "$PR_URL"
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          PR_URL: ${{ github.event.pull_request.html_url }}