code-standards-checker

Code Standards Checker

Automatically check code against coding standards and style guides.

Philosophy

Consistent code style makes collaboration seamless and reduces cognitive load.

Core Beliefs

1. Standards Reduce Friction: Consistent style means less time debating formatting
2. Automated Enforcement Saves Time: Tools catch style issues faster than humans
3. Community Standards Build Better Software: Following established patterns improves code quality
4. Readability is Paramount: Code is read far more often than it's written

Why Coding Standards Matter

• Team Collaboration: Everyone writes code the same way
• Easier Maintenance: Consistent patterns are easier to understand and modify
• Fewer Bugs: Many standards prevent common mistakes
• Professional Quality: Shows attention to detail and best practices

When to Use This Skill

Activate this skill when the user:

• Asks "does my code follow standards?"
• Mentions "coding standards", "code style", or "best practices"
• Asks "is this code compliant?"
• References "PHPCS", "ESLint", "WordPress Coding Standards", or "Drupal Coding Standards"
• Shows code and asks if it's properly formatted
• Asks "should I lint this?"

Decision Framework

Before running standards checks, consider:

What Platform Is This?

1. Drupal → Use Drupal Coding Standards (via PHPCS)
2. WordPress → Use WordPress Coding Standards (via PHPCS)
3. Generic PHP → Use PSR-12 (via PHPCS)
4. JavaScript → Use ESLint with project config
5. Mixed → Run both PHP and JavaScript checks

What's the Scope?

• Specific file(s) - User shows code or mentions file → Check that file
• Recent changes - User mentions "my changes" → Check git diff
• Entire project - User says "whole project" → Run project-wide check
• Directory - User mentions component/module → Check that directory

What Standard Should Apply?

Automatic detection:

• Drupal project → Drupal Coding Standards
• WordPress project → WordPress Coding Standards
• .eslintrc present → Use project's ESLint config
• composer.json with PHPCS → Use configured standard

User-specified:

• User mentions specific standard → Use that standard
• No config found → Suggest installing standards tools

Should This Auto-Fix?

• ✅ Yes - User asks "can you fix these?" → Provide --fix commands
• ❌ No - Just checking compliance → Report violations only
• ⚠️ Ask - Many violations found → Suggest auto-fix option

Decision Tree

User asks about standards
    ↓
Detect platform (Drupal/WordPress/Generic)
    ↓
Determine scope (file/changes/project)
    ↓
Check for existing config (.phpcs.xml, .eslintrc)
    ↓
Run appropriate tool
    ↓
Report violations
    ↓
Auto-fix? → Provide --fix commands if requested

Workflow

1. Detect Project Type

Check for indicators:

Drupal:

# Check for Drupal
test -f web/core/lib/Drupal.php && echo "Drupal project"
test -f docroot/core/lib/Drupal.php && echo "Drupal project"

WordPress:

# Check for WordPress
test -f wp-config.php && echo "WordPress project"
test -f web/wp-config.php && echo "WordPress project"

JavaScript/Frontend:

# Check for Node project
test -f package.json && echo "Node project"

2. Quick Start for Kanopi Projects

For projects with Kanopi DDEV add-ons:

Drupal/WordPress:

# Run all code quality checks
ddev composer code-check

# Individual checks
ddev composer phpstan      # Static analysis
ddev composer phpcs        # Coding standards
ddev composer rector-check # Modernization check

Themes with Node:

# ESLint for JavaScript
ddev theme-npm run lint
# or
ddev exec npm run lint

3. Manual Analysis (Non-Kanopi Projects)

PHP Standards (Drupal/WordPress)

Check if PHPCS is available:

test -f vendor/bin/phpcs && echo "PHPCS found"

Run PHPCS:

# Drupal
vendor/bin/phpcs --standard=Drupal,DrupalPractice web/modules/custom

# WordPress
vendor/bin/phpcs --standard=WordPress wp-content/themes/custom-theme
vendor/bin/phpcs --standard=WordPress wp-content/plugins/custom-plugin

Common Issues to Report:

• Missing docblocks
• Incorrect indentation (2 spaces for Drupal, tabs for WordPress)
• Line length violations
• Naming conventions (camelCase vs snake_case)
• Missing/incorrect type hints

JavaScript Standards

Check if ESLint is available:

test -f node_modules/.bin/eslint && echo "ESLint found"

Run ESLint:

npx eslint src/**/*.js
npx eslint themes/custom/js/**/*.js

Common Issues to Report:

• Missing semicolons (or extra semicolons)
• Incorrect quotes (single vs double)
• Unused variables
• Console.log statements
• Missing JSDoc comments

4. Analyze Specific Code Snippet

If user shows code without running tools:

PHP Analysis Checklist:

• ✅ Proper indentation (2 spaces Drupal, 4 spaces or tabs WordPress)
• ✅ Opening braces on same line (PHP) or next line (JS)
• ✅ Docblocks present for functions/classes
• ✅ Type hints for parameters and return types
• ✅ No deprecated functions
• ✅ SQL queries use placeholders (no concatenation)
• ✅ Strings use proper quotes (single for non-interpolated)

JavaScript Analysis Checklist:

• ✅ Consistent semicolon usage
• ✅ Proper quote style (single or double, consistent)
• ✅ No var (use const or let)
• ✅ Arrow functions where appropriate
• ✅ Proper JSDoc comments
• ✅ No console.log in production code

5. Report Results

Format:

## Code Standards Check Results

**Project Type**: Drupal 10
**Standard**: Drupal Coding Standards + DrupalPractice

### Summary
- ✅ 45 files checked
- ⚠️ 12 warnings
- ❌ 3 errors

### Errors (Must Fix)

1. **Missing type hint** - `src/Controller/MyController.php:23`
   ```php
   public function process($data) {  // Missing type hint

Fix: Add type hint public function process(array $data): void {

2. SQL Injection Risk - src/Service/UserService.php:45

   db_query("SELECT * FROM users WHERE id = " . $id);
   

   Fix: Use placeholders db_query("SELECT * FROM users WHERE id = :id", [':id' => $id]);

Warnings (Should Fix)

1. Line too long - src/Form/MyForm.php:67
   • Line length: 95 characters (exceeds 80)
   • Consider breaking into multiple lines

Quick Fixes Available

Run this to auto-fix formatting issues:

ddev composer code-fix
# or manually
vendor/bin/phpcbf --standard=Drupal web/modules/custom

## Integration with CMS Cultivator

This skill complements the `/quality-standards` slash command:

- **This Skill**: Automatically triggered during conversation
  - "Is this code up to standards?"
  - "Does this follow Drupal conventions?"
  - Quick checks on code snippets

- **`/quality-standards` Command**: Explicit full project scan
  - Comprehensive standards check
  - CI/CD integration
  - Full project analysis

## Platform-Specific Standards

### Drupal Coding Standards

**Key Conventions**:
- 2-space indentation
- Opening brace on same line
- Type hints required (PHP 7.4+)
- Drupal-specific naming (snake_case for functions, PascalCase for classes)
- Services over procedural code
- Dependency injection preferred

**Example Good Code**:
```php
<?php

namespace Drupal\mymodule\Controller;

use Drupal\Core\Controller\ControllerBase;

/**
 * Provides route responses for the My Module module.
 */
class MyModuleController extends ControllerBase {

  /**
   * Returns a render array for the page.
   *
   * @return array
   *   A render array.
   */
  public function content(): array {
    return [
      '#markup' => $this->t('Hello World'),
    ];
  }

}

WordPress Coding Standards

Key Conventions:

• Tab indentation (not spaces)
• Yoda conditions (if ( true === $condition ))
• Braces on next line for control structures
• WordPress naming (underscores, not camelCase)
• Escaping and sanitization required
• Nonces for forms

Example Good Code:

<?php
/**
 * Display user dashboard widget.
 *
 * @param int $user_id User ID.
 * @return void
 */
function my_theme_display_dashboard( $user_id ) {
	if ( ! is_user_logged_in() ) {
		return;
	}

	$user_data = get_userdata( $user_id );

	if ( ! $user_data ) {
		return;
	}

	echo '<div class="dashboard">';
	echo '<h2>' . esc_html( $user_data->display_name ) . '</h2>';
	echo '</div>';
}

JavaScript Standards

Modern JavaScript Best Practices:

// Good: const/let, arrow functions, template literals
const getUserName = (user) => {
  return `${user.firstName} ${user.lastName}`;
};

// Bad: var, function keyword, concatenation
var getUserName = function(user) {
  return user.firstName + ' ' + user.lastName;
};

Common Standards Violations

High Priority (Security/Functionality)

1. SQL Injection

   • Direct query string concatenation
   • Missing prepared statements

2. XSS Vulnerabilities

   • Unescaped output
   • Missing sanitization

3. Missing Access Checks

   • No permission verification
   • Unauthenticated endpoints

Medium Priority (Maintainability)

1. Missing Type Hints
2. Poor Function/Variable Names
3. Missing Documentation
4. Overly Long Functions
5. Deep Nesting

Low Priority (Style)

1. Whitespace Issues
2. Line Length
3. Brace Placement
4. Comment Formatting

Example Interactions

Example 1: Quick snippet check

User: "Is this WordPress code following standards?"
[Shows code with tabs and proper escaping]

Skill: "Let me check that against WordPress Coding Standards...
✅ Proper tab indentation
✅ Output properly escaped with esc_html()
✅ Correct brace placement
⚠️ Missing docblock - should document the function

Overall: Good! Just add a docblock."

Example 2: Project-wide check

User: "Does my custom module follow Drupal standards?"

Skill: "I'll run PHPCS on your custom module...
[Runs ddev composer phpcs or vendor/bin/phpcs]

Found 3 errors and 12 warnings across 8 files.
Most common issues:
- Missing type hints (5 occurrences)
- Lines too long (7 occurrences)

Would you like me to show the specific issues or run the auto-fixer?"

Resources

• Drupal Coding Standards
• WordPress Coding Standards
• PHP_CodeSniffer
• ESLint
• Airbnb JavaScript Style Guide