name: Test

on:
  # Run on pushes to `master` and on all pull requests.
  # Prevent the build from running when there are only irrelevant changes.
  push:
    branches:
      - master
    tags:
      - '**'
    paths-ignore:
      - '**.md'
  pull_request:
  # Allow manually triggering the workflow.
  workflow_dispatch:

# Cancels all previous workflow runs for the same branch that have not yet completed.
concurrency:
  # The concurrency group contains the workflow name and the branch name.
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

jobs:
  build:
    runs-on: ubuntu-latest
    name: "Build Phar on PHP: 8.0"

    permissions:
      id-token: write
      contents: read
      attestations: write

    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Setup PHP
        uses: shivammathur/setup-php@v2
        with:
          php-version: '8.0'
          coverage: none
          ini-values: phar.readonly=Off, error_reporting=-1, display_errors=On

      - name: Build the phar
        run: php scripts/build-phar.php

      # Provide provenance for generated binaries.
      # Only attests the build artifacts which will be used in the published releases as per the guidelines in "what to attest".
      # https://docs.github.com/en/actions/security-guides/using-artifact-attestations-to-establish-provenance-for-builds
      - name: Generate artifact attestations
        if: ${{ github.ref_type == 'tag' }}
        uses: actions/attest-build-provenance@v1
        with:
          subject-path: |
            ${{ github.workspace }}/phpcs.phar
            ${{ github.workspace }}/phpcbf.phar

      - name: Upload the PHPCS phar
        uses: actions/upload-artifact@v4
        with:
          name: phpcs-phar
          path: ./phpcs.phar
          if-no-files-found: error
          retention-days: 28

      - name: Upload the PHPCBF phar
        uses: actions/upload-artifact@v4
        with:
          name: phpcbf-phar
          path: ./phpcbf.phar
          if-no-files-found: error
          retention-days: 28

      # Both the below only check a file which is rarely changed and therefore unlikely to have issues.
      # This test is about testing that the phars are functional, *not* about whether the code style complies.
      - name: 'PHPCS: check code style using the Phar file to test the Phar is functional'
        run: php phpcs.phar ./scripts

      - name: 'PHPCBF: fix code style using the Phar file to test the Phar is functional'
        run: php phpcbf.phar ./scripts

  test:
    runs-on: ubuntu-latest
    needs: build

    strategy:
      # Keys:
      # - custom_ini: Whether to run with specific custom ini settings to hit very specific
      #   code conditions.
      matrix:
        os: ['ubuntu-latest', 'windows-latest']
        php: ['5.4', '5.5', '5.6', '7.0', '7.1', '7.2', '7.3', '7.4', '8.0', '8.1', '8.2', '8.3', '8.4', '8.5']
        custom_ini: [false]

        exclude:
          # Installing on Windows with PHP 5.4 runs into all sorts of problems (which are not ours).
          - php: '5.4'
            os: 'windows-latest'

        include:
          # Skip test runs on builds which are also run in the coverage job.
          # Note: the tests on PHP 7.2 will still be run as the coverage build uses custom_ini settings for that version.
          - php: '5.4'
            os: 'ubuntu-latest'
            skip_tests: true
          - php: '5.5'
            os: 'windows-latest'
            skip_tests: true
          - php: '8.4'
            skip_tests: true

          # Extra builds running only the unit tests with different PHP ini settings.
          - php: '5.5'
            os: 'ubuntu-latest'
            custom_ini: true
          - php: '7.0'
            os: 'ubuntu-latest'
            custom_ini: true

    # yamllint disable-line rule:line-length
    name: "PHP: ${{ matrix.php }} ${{ matrix.custom_ini && ' with custom ini settings' || '' }} (${{ matrix.os == 'ubuntu-latest' && 'Linux' || 'Win'  }})"

    continue-on-error: ${{ matrix.php == '8.5' }}

    steps:
      - name: Prepare git to leave line endings alone
        run: git config --global core.autocrlf input

      - name: Checkout code
        uses: actions/checkout@v4

      - name: Setup ini config
        id: set_ini
        shell: bash
        run: |
          # Set the "short_open_tag" ini to make sure specific conditions are tested.
          # Also turn on error_reporting to ensure all notices are shown.
          if [[ ${{ matrix.custom_ini }} == true && "${{ matrix.php }}" == '5.5' ]]; then
            echo 'PHP_INI=error_reporting=-1, display_errors=On, date.timezone=Australia/Sydney, short_open_tag=On, asp_tags=On' >> "$GITHUB_OUTPUT"
          elif [[ ${{ matrix.custom_ini }} == true && "${{ matrix.php }}" == '7.0' ]]; then
            echo 'PHP_INI=error_reporting=-1, display_errors=On, date.timezone=Australia/Sydney, short_open_tag=On' >> "$GITHUB_OUTPUT"
          else
            echo 'PHP_INI=error_reporting=-1, display_errors=On' >> "$GITHUB_OUTPUT"
          fi

      - name: Install PHP
        uses: shivammathur/setup-php@v2
        with:
          php-version: ${{ matrix.php }}
          ini-values: ${{ steps.set_ini.outputs.PHP_INI }}
          coverage: none
          tools: cs2pr

      # This action also handles the caching of the dependencies.
      - name: Set up node
        if: ${{ matrix.custom_ini == false }}
        uses: actions/setup-node@v4
        with:
          node-version: '20'

      - name: Install external tools used in tests
        if: ${{ matrix.custom_ini == false }}
        run: >
          npm install -g --fund false
          csslint
          eslint
          jshint

      # Install dependencies and handle caching in one go.
      # @link https://github.com/marketplace/actions/install-php-dependencies-with-composer
      - name: Install Composer dependencies
        uses: "ramsey/composer-install@v3"
        with:
          composer-options: ${{ matrix.php == '8.5' && '--ignore-platform-req=php' || '' }}
          custom-cache-suffix: $(date -u "+%Y-%m")

      # Note: The code style check is run multiple times against every PHP version
      # as it also acts as an integration test.
      - name: 'PHPCS: set the path to PHP'
        run: php "bin/phpcs" --config-set php_path php

      - name: 'PHPUnit: run the full test suite without code coverage'
        if: ${{ matrix.skip_tests != true }}
        run: php "vendor/bin/phpunit" tests/AllTests.php --no-coverage

      - name: 'PHPCS: check code style without cache, no parallel'
        if: ${{ matrix.custom_ini == false && matrix.php != '7.4' }}
        run: php "bin/phpcs" --no-cache --parallel=1

      - name: 'PHPCS: check code style to show results in PR'
        if: ${{ matrix.custom_ini == false && matrix.php == '7.4' }}
        id: phpcs
        run: php "bin/phpcs" --no-cache --parallel=1 --report-full --report-checkstyle=./phpcs-report.xml

      - name: Show PHPCS results in PR
        if: ${{ always() && steps.phpcs.outcome == 'failure' && matrix.php == '7.4' }}
        run: cs2pr ./phpcs-report.xml

      - name: Download the PHPCS phar
        if: ${{ matrix.custom_ini == false }}
        uses: actions/download-artifact@v4
        with:
          name: phpcs-phar

      # This test specifically tests that the Phar which will be released works correctly on all PHP versions.
      - name: 'PHPCS: check code style using the Phar file'
        if: ${{ matrix.custom_ini == false }}
        run: php phpcs.phar

  coverage:
    runs-on: ${{ matrix.os }}

    strategy:
      matrix:
        os: ['ubuntu-latest', 'windows-latest']
        php: ['8.4']
        custom_ini: [false]

        include:
          - php: '5.4'
            os: 'ubuntu-latest'
            custom_ini: false
          # Installing on Windows with PHP 5.4 runs into all sorts of problems with Composer.
          # Considering PHP 5.4 is ancient, I deem it acceptable to run coverage on Windows on PHP 5.5.
          # See this issue for more context (yes, I've seen this problem before):
          # @link https://github.com/PHPCSStandards/composer-installer/pull/213
          - php: '5.5'
            os: 'windows-latest'
            custom_ini: false

          # Also run one coverage build with custom ini settings.
          - php: '7.2'
            os: 'ubuntu-latest'
            custom_ini: true

    # yamllint disable-line rule:line-length
    name: "Coverage: ${{ matrix.php }} ${{ matrix.custom_ini && ' with custom ini settings' || '' }} (${{ matrix.os == 'ubuntu-latest' && 'Linux' || 'Win'  }})"

    steps:
      - name: Prepare git to leave line endings alone
        run: git config --global core.autocrlf input

      - name: Checkout code
        uses: actions/checkout@v4

      - name: Setup ini config
        if: ${{ matrix.os != 'windows-latest' }}
        id: set_ini
        shell: bash
        run: |
          # Set the "short_open_tag" ini to make sure specific conditions are tested.
          if [[ ${{ matrix.custom_ini }} == true && "${{ matrix.php }}" == '5.4' ]]; then
            echo 'PHP_INI=, date.timezone=Australia/Sydney, short_open_tag=On, asp_tags=On' >> "$GITHUB_OUTPUT"
          fi

      - name: Install PHP
        uses: shivammathur/setup-php@v2
        with:
          php-version: ${{ matrix.php }}
          ini-values: error_reporting=-1, display_errors=On${{ steps.set_ini.outputs.PHP_INI }}
          coverage: xdebug

      # This action also handles the caching of the dependencies.
      - name: Set up node
        if: ${{ matrix.custom_ini == false }}
        uses: actions/setup-node@v4
        with:
          node-version: '20'

      - name: Install external tools used in tests
        if: ${{ matrix.custom_ini == false }}
        run: >
          npm install -g --fund false
          csslint
          eslint
          jshint

      # Install dependencies and handle caching in one go.
      # @link https://github.com/marketplace/actions/install-php-dependencies-with-composer
      - name: Install Composer dependencies
        uses: "ramsey/composer-install@v3"
        with:
          # Bust the cache at least once a month - output format: YYYY-MM.
          custom-cache-suffix: $(date -u "+%Y-%m")

      - name: Grab PHPUnit version
        id: phpunit_version
        shell: bash
        # yamllint disable-line rule:line-length
        run: echo "VERSION=$(php "vendor/bin/phpunit" --version | grep --only-matching --max-count=1 --extended-regexp '\b[0-9]+\.[0-9]+')" >> "$GITHUB_OUTPUT"

      - name: "DEBUG: Show grabbed version"
        run: echo ${{ steps.phpunit_version.outputs.VERSION }}

      - name: 'PHPCS: set the path to PHP'
        run: php "bin/phpcs" --config-set php_path php

      # PHPUnit 9.3 started using PHP-Parser for code coverage, which can cause issues due to Parser
      # also polyfilling PHP tokens.
      # As of PHPUnit 9.3.4, a cache warming option is available.
      # Using that option prevents issues with PHP-Parser backfilling PHP tokens during our test runs.
      - name: "Warm the PHPUnit cache (PHPUnit 9.3+)"
        if: ${{ steps.phpunit_version.outputs.VERSION >= '9.3' }}
        run: php "vendor/bin/phpunit" --coverage-cache ./build/phpunit-cache --warm-coverage-cache

      - name: "Run the unit tests with code coverage (PHPUnit < 9.3)"
        if: ${{ matrix.os != 'windows-latest' && steps.phpunit_version.outputs.VERSION < '9.3' }}
        run: php "vendor/bin/phpunit" tests/AllTests.php

      - name: "Run the unit tests with code coverage (PHPUnit 9.3+)"
        if: ${{ matrix.os != 'windows-latest' && steps.phpunit_version.outputs.VERSION >= '9.3' }}
        run: php "vendor/bin/phpunit" tests/AllTests.php --coverage-cache ./build/phpunit-cache

      - name: "Run the unit tests which may have different outcomes on Windows with code coverage (PHPUnit < 9.3)"
        if: ${{ matrix.os == 'windows-latest' && steps.phpunit_version.outputs.VERSION < '9.3' }}
        run: php "vendor/bin/phpunit" tests/AllTests.php --group Windows

      - name: "Run the unit tests which may have different outcomes on Windows with code coverage (PHPUnit 9.3+)"
        if: ${{ matrix.os == 'windows-latest' && steps.phpunit_version.outputs.VERSION >= '9.3' }}
        run: php "vendor/bin/phpunit" tests/AllTests.php --group Windows --coverage-cache ./build/phpunit-cache

      - name: Upload coverage results to Coveralls
        if: ${{ success() }}
        uses: coverallsapp/github-action@v2
        with:
          format: clover
          file: build/logs/clover.xml
          flag-name: os-${{ matrix.os }}-php-${{ matrix.php }}-custom-ini-${{ matrix.custom_ini }}
          parallel: true

  coveralls-finish:
    needs: coverage
    if: always() && needs.coverage.result == 'success'

    runs-on: ubuntu-latest

    steps:
      - name: Coveralls Finished
        uses: coverallsapp/github-action@v2
        with:
          parallel-finished: true
