name: "Continuous Integration"

on:
  pull_request: null

env:
  COMPOSER_ROOT_VERSION: "2.1"

jobs:
  phpunit:
    name: "PHPUnit"
    runs-on: "ubuntu-20.04"

    strategy:
      matrix:
        php-version:
          - "7.1"
          - "7.2"
          - "7.3"
          - "7.4"
          - "8.0"
        deps:
          - "normal"
        include:
          - deps: "low"
            php-version: "7.1"

    steps:
      - name: "Checkout"
        uses: "actions/checkout@v2"
        with:
          fetch-depth: 2

      - name: "Install PHP with pcov"
        uses: "shivammathur/setup-php@v2"
        if: "${{ matrix.php-version != '7.1' }}"
        with:
          php-version: "${{ matrix.php-version }}"
          coverage: "pcov"

      - name: "Install PHP with xdebug"
        uses: "shivammathur/setup-php@v2"
        if: "${{ matrix.php-version == '7.1' }}"
        with:
          php-version: "${{ matrix.php-version }}"
          coverage: "xdebug"

      - name: "Cache dependencies installed with composer"
        uses: "actions/cache@v2"
        with:
          path: "~/.composer/cache"
          key: "php-${{ matrix.php-version }}-composer-locked-${{ hashFiles('composer.lock') }}"
          restore-keys: "php-${{ matrix.php-version }}-composer-locked-"

      # Remove this block when
      # https://github.com/felixfbecker/php-language-server-protocol/pull/15 is
      # merged and released
      - name: "Remove dependency on vimeo/psalm for PHP8"
        run: "composer remove --dev --no-update vimeo/psalm"
        if: "${{ matrix.php-version == '8.0' }}"

      - name: "Downgrade Composer"
        run: "composer self-update --1"
        if: "${{ matrix.php-version == '7.1' }}"

      - name: "Update dependencies with composer"
        run: "composer update --no-interaction --no-progress --no-suggest"
        if: "${{ matrix.deps == 'normal' }}"

      - name: "Install lowest possible dependencies with composer"
        run: "composer update --no-interaction --no-progress --no-suggest --prefer-dist --prefer-lowest"
        if: "${{ matrix.deps == 'low' }}"

      - name: "Run PHPUnit"
        run: "vendor/bin/phpunit --coverage-clover=coverage.xml"

      - name: "Upload to Codecov"
        uses: "codecov/codecov-action@v1"