name: Coding Standards

on:
  # JSHint was introduced in WordPress 3.8.
  # PHPCS checking was introduced in WordPress 5.1.
  push:
    branches:
      - trunk
      - '3.[89]'
      - '[4-9].[0-9]'
    tags:
      - '[0-9]+.[0-9]'
      - '[0-9]+.[0-9].[0-9]+'
      - '!3.7.[0-9]+'
  pull_request:
    branches:
      - trunk
      - '3.[89]'
      - '[4-9].[0-9]'
    paths:
      # Any change to a PHP or JavaScript file should run checks.
      - '**.js'
      - '**.php'
      # These files configure npm. Changes could affect the outcome.
      - 'package*.json'
      # These files configure Composer. Changes could affect the outcome.
      - 'composer.*'
      # This file configures JSHint. Changes could affect the outcome.
      - '.jshintrc'
      # This file configures PHPCS. Changes could affect the outcome.
      - 'phpcs.xml.dist'
      # Changes to workflow files should always verify all workflows are successful.
      - '.github/workflows/*.yml'
  workflow_dispatch:

# Cancels all previous workflow runs for pull requests that have not completed.
concurrency:
  # The concurrency group contains the workflow name and the branch name for pull requests
  # or the commit hash for any other events.
  group: ${{ github.workflow }}-${{ github.event_name == 'pull_request' && github.head_ref || github.sha }}
  cancel-in-progress: true

jobs:
  # Runs PHP coding standards checks.
  #
  # Violations are reported inline with annotations.
  #
  # Performs the following steps:
  # - Checks out the repository.
  # - Sets up PHP.
  # - Configures caching for PHPCS scans.
  # - Installs Composer dependencies.
  # - Make Composer packages available globally.
  # - Runs PHPCS on the full codebase with warnings suppressed.
  # - Generate a report for displaying issues as pull request annotations.
  # - Runs PHPCS on the `tests` directory without warnings suppressed.
  # - Generate a report for displaying `test` directory issues as pull request annotations.
  # - Ensures version-controlled files are not modified or deleted.
  phpcs:
    name: PHP coding standards
    runs-on: ubuntu-latest
    timeout-minutes: 20
    if: ${{ github.repository == 'WordPress/wordpress-develop' || github.event_name == 'pull_request' }}

    steps:
      - name: Checkout repository
        uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c # v3.3.0

      - name: Set up PHP
        uses: shivammathur/setup-php@d30ad8b1843ace22e6698ab99bbafaa747b6bd0d # v2.24.0
        with:
          php-version: '7.4'
          coverage: none
          tools: cs2pr

      # This date is used to ensure that the PHPCS cache is cleared at least once every week.
      # http://man7.org/linux/man-pages/man1/date.1.html
      - name: "Get last Monday's date"
        id: get-date
        run: echo "date=$(/bin/date -u --date='last Mon' "+%F")" >> $GITHUB_OUTPUT

      - name: Cache PHPCS scan cache
        uses: actions/cache@69d9d449aced6a2ede0bc19182fadc3a0a42d2b0 # v3.2.6
        with:
          path: |
            .cache/phpcs-src.json
            .cache/phpcs-tests.json
          key: ${{ runner.os }}-date-${{ steps.get-date.outputs.date }}-phpcs-cache-${{ hashFiles('**/composer.json', 'phpcs.xml.dist') }}

      # Since Composer dependencies are installed using `composer update` and no lock file is in version control,
      # passing a custom cache suffix ensures that the cache is flushed at least once per week.
      - name: Install Composer dependencies
        uses: ramsey/composer-install@83af392bf5f031813d25e6fe4cd626cdba9a2df6 # v2.2.0
        with:
          custom-cache-suffix: ${{ steps.get-date.outputs.date }}

      - name: Make Composer packages available globally
        run: echo "${PWD}/vendor/bin" >> $GITHUB_PATH

      - name: Run PHPCS on all Core files
        id: phpcs-core
        run: phpcs -n --report-full --cache=./.cache/phpcs-src.json --report-checkstyle=./.cache/phpcs-report.xml

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

      - name: Check test suite files for warnings
        id: phpcs-tests
        run: phpcs tests --report-full --cache=./.cache/phpcs-tests.json --report-checkstyle=./.cache/phpcs-tests-report.xml

      - name: Show test suite scan results in PR
        if: ${{ always() && steps.phpcs-tests.outcome == 'failure' }}
        run: cs2pr ./.cache/phpcs-tests-report.xml

      - name: Ensure version-controlled files are not modified during the tests
        run: git diff --exit-code

  # Runs the JavaScript coding standards checks.
  #
  # JSHint violations are not currently reported inline with annotations.
  #
  # Performs the following steps:
  # - Checks out the repository.
  # - Sets up Node.js.
  # - Logs debug information about the GitHub Action runner.
  # - Installs npm dependencies.
  # - Run the WordPress JSHint checks.
  # - Ensures version-controlled files are not modified or deleted.
  jshint:
    name: JavaScript coding standards
    runs-on: ubuntu-latest
    timeout-minutes: 20
    if: ${{ github.repository == 'WordPress/wordpress-develop' || github.event_name == 'pull_request' }}
    env:
      PUPPETEER_SKIP_CHROMIUM_DOWNLOAD: ${{ true }}

    steps:
      - name: Checkout repository
        uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c # v3.3.0

      - name: Set up Node.js
        uses: actions/setup-node@64ed1c7eab4cce3362f8c340dee64e5eaeef8f7c # v3.6.0
        with:
          node-version-file: '.nvmrc'
          cache: npm

      - name: Log debug information
        run: |
          npm --version
          node --version
          git --version
          svn --version

      - name: Install npm Dependencies
        run: npm ci

      - name: Run JSHint
        run: npm run grunt jshint

      - name: Ensure version-controlled files are not modified or deleted
        run: git diff --exit-code

  slack-notifications:
    name: Slack Notifications
    uses: WordPress/wordpress-develop/.github/workflows/slack-notifications.yml@trunk
    needs: [ phpcs, jshint ]
    if: ${{ github.repository == 'WordPress/wordpress-develop' && github.event_name != 'pull_request' && always() }}
    with:
      calling_status: ${{ needs.phpcs.result == 'success' && needs.jshint.result == 'success' && 'success' || ( needs.phpcs.result == 'cancelled' || needs.jshint.result == 'cancelled' ) && 'cancelled' || 'failure' }}
    secrets:
      SLACK_GHA_SUCCESS_WEBHOOK: ${{ secrets.SLACK_GHA_SUCCESS_WEBHOOK }}
      SLACK_GHA_CANCELLED_WEBHOOK: ${{ secrets.SLACK_GHA_CANCELLED_WEBHOOK }}
      SLACK_GHA_FIXED_WEBHOOK: ${{ secrets.SLACK_GHA_FIXED_WEBHOOK }}
      SLACK_GHA_FAILURE_WEBHOOK: ${{ secrets.SLACK_GHA_FAILURE_WEBHOOK }}

  failed-workflow:
    name: Failed workflow tasks
    runs-on: ubuntu-latest
    needs: [ phpcs, jshint, slack-notifications ]
    if: |
      always() &&
      github.repository == 'WordPress/wordpress-develop' &&
      github.event_name != 'pull_request' &&
      github.run_attempt < 2 &&
      (
        needs.phpcs.result == 'cancelled' || needs.phpcs.result == 'failure' ||
        needs.jshint.result == 'cancelled' || needs.jshint.result == 'failure'
      )

    steps:
      - name: Dispatch workflow run
        uses: actions/github-script@98814c53be79b1d30f795b907e553d8679345975 # v6.4.0
        with:
          retries: 2
          retry-exempt-status-codes: 418
          script: |
            github.rest.actions.createWorkflowDispatch({
              owner: context.repo.owner,
              repo: context.repo.repo,
              workflow_id: 'failed-workflow.yml',
              ref: 'trunk',
              inputs: {
                run_id: '${{ github.run_id }}'
              }
            });