ci.yml

name: CI

on:
  push:
    branches:
      - master
  pull_request:

jobs:
  build-lowest-version:
    name: Build lowest version
    runs-on: ubuntu-latest

    steps:
      - name: Set up PHP
        uses: shivammathur/setup-php@v2
        with:
          php-version: '7.2'
          coverage: none
          extensions: mbstring, intl

      - name: Checkout code
        uses: actions/checkout@v7

      - name: Download dependencies
        run: composer update --no-interaction --prefer-stable --prefer-lowest --prefer-dist

      - name: Run tests
        run: ./vendor/bin/phpunit

  build:
    name: Build
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      max-parallel: 10
      matrix:
        php: ['7.2', '7.3', '7.4', '8.0', '8.1', '8.2', '8.3', '8.4']

    steps:
      - name: Set up PHP
        uses: shivammathur/setup-php@v2
        with:
          php-version: ${{ matrix.php }}
          coverage: none
          extensions: mbstring, intl

      - name: Checkout code
        uses: actions/checkout@v7

      - name: Download dependencies
        run: composer update --no-interaction --prefer-dist

      - name: Run tests
        run: ./vendor/bin/phpunit

  release:
    name: Release
    needs:
      - build-lowest-version
      - build
    if: github.event_name == 'push' && github.ref == format('refs/heads/{0}', github.event.repository.default_branch)
    runs-on: ubuntu-latest
    permissions:
      contents: write
    concurrency:
      group: release
      cancel-in-progress: false
    outputs:
      tag: ${{ steps.version.outputs.tag }}
      created: ${{ steps.release.outputs.created }}

    steps:
      - name: Checkout code
        uses: actions/checkout@v7

      - name: Read the version from the changelog
        id: version
        run: |
          version=$(sed -nE 's/^## ([0-9][^[:space:]]*).*/\1/p' CHANGELOG.md | head -1)
          if [ -z "$version" ]; then
            echo "::error file=CHANGELOG.md::No '## x.y.z' heading found in CHANGELOG.md"
            exit 1
          fi
          echo "tag=$version" >> "$GITHUB_OUTPUT"
          echo "The changelog version is $version; the tag is $version."

      - name: Create the tag and the GitHub release
        id: release
        env:
          GH_TOKEN: ${{ github.token }}
          TAG: ${{ steps.version.outputs.tag }}
        run: |
          rc=0
          git ls-remote --exit-code --tags origin "refs/tags/$TAG" >/dev/null || rc=$?
          if [ "$rc" -eq 0 ]; then
            echo "Tag $TAG already exists; nothing to release."
            echo "created=false" >> "$GITHUB_OUTPUT"
            exit 0
          elif [ "$rc" -ne 2 ]; then
            echo "::error::Could not check whether tag $TAG exists (git ls-remote exited with $rc)."
            exit "$rc"
          fi
          gh release create "$TAG" --target "$GITHUB_SHA" --title "$TAG" --generate-notes
          echo "created=true" >> "$GITHUB_OUTPUT"
          echo "Created tag $TAG and its GitHub release from $GITHUB_SHA."