Upgrade to PHPUnit 10, add PHPCS with WPCS compliance, add phpcs CI job

- Upgrade PHPUnit 9.6 → 10, update phpunit.xml.dist schema
- Add PHPCS 3.13 with WordPress-Extra + PHPCompatibilityWP standards
- PHPCBF auto-fix + manual fixes for full WPCS compliance
- Add phpcs job to release workflow (parallel with lint)
- Pin composer platform to PHP 8.3 to prevent incompatible dep locks

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.gitea/workflows/release.yml

@@ -28,7 +28,30 @@ jobs:
           find includes -name "*.php" -print0 | xargs -0 -n1 php -l
           find tests -name "*.php" -print0 | xargs -0 -n1 php -l
 
+  phpcs:
+    name: PHP CodeSniffer
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: '8.3'
+          extensions: mbstring, xml
+          tools: composer:v2
+
+      - name: Install Composer dependencies
+        run: |
+          composer config platform.php 8.3.0
+          composer install --optimize-autoloader --no-interaction
+
+      - name: Run PHPCS
+        run: vendor/bin/phpcs
+
   test:
+    name: PHP Unit
     runs-on: ubuntu-latest
     needs: lint
     steps:
@@ -51,7 +74,7 @@ jobs:
         run: vendor/bin/phpunit --testdox
 
   build-release:
-    needs: test
+    needs: [test, phpcs]
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code

.gitignore

@@ -25,3 +25,4 @@ phpunit.xml
 languages/*.mo
 
 .phpunit.result.cache
+.phpunit.cache/

CHANGELOG.md

@@ -12,15 +12,20 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - **PHPUnit test suite**: 57 unit tests covering all 6 core classes (ProductType, StockManager, CartHandler, Plugin, Admin/ProductData, Admin/Settings)
 - **Brain Monkey + Mockery** for WordPress/WooCommerce function mocking without a full WP installation
 - **WooCommerce class stubs** in `tests/stubs/` for classes extended by the plugin (WC_Product, WC_Settings_Page, etc.)
+- **PHPCS** with WordPress-Extra and PHPCompatibilityWP coding standards (`phpcs.xml.dist`)
+- **PHPCS job** in release workflow — coding standards must pass before release is built
 - **PHP lint job** in release workflow — syntax-checks all PHP files before testing
-- **Test job** in release workflow — tests must pass before release package is built (`needs: test`)
+- **Test job** in release workflow — tests must pass before release package is built
-- Testing section in README
+- Testing and linting sections in README and CLAUDE.md
 
 ### Changed
 
 - **PSR-4 refactored**: Renamed files to PascalCase (Product_Type → ProductType, etc.) and changed namespace from `WC_Composable_Product` to `Magdev\WcComposableProduct`
 - Updated all cross-references in PHP files, main plugin file, composer.json, CSS/JS doc comments, and translation file source comments
-- Release workflow now has three stages: lint → test → build-release
+- **PHPUnit upgraded** from 9.6 to 10 (Brain Monkey 2.7 supports both)
+- **WPCS formatting** applied to all source files (tabs, Yoda conditions, strict `in_array`, `wp_json_encode`, long array syntax)
+- Release workflow now has four stages: lint + phpcs (parallel) → test → build-release
+- Composer platform pinned to PHP 8.3 to prevent incompatible dependency locks
 
 ## [1.3.0] - 2026-03-01
 

CLAUDE.md

@@ -18,7 +18,8 @@ This project is 100% AI-generated ("vibe-coded") using Claude.AI.
 - **Styling:** Custom CSS
 - **Dependencies:** Composer
 - **i18n:** WordPress i18n (.pot/.po/.mo), text domain: `wc-composable-product`
-- **Testing:** PHPUnit 9.6 + Brain Monkey 2.7 + Mockery 1.6
+- **Testing:** PHPUnit 10 + Brain Monkey 2.7 + Mockery 1.6
+- **Linting:** PHPCS 3.13 with WordPress-Extra + PHPCompatibilityWP
 - **CI/CD:** Gitea Actions (`.gitea/workflows/release.yml`)
 
 ## Project Structure
@@ -55,6 +56,7 @@ wc-composable-product/
 │   └── product-selector.twig  # Frontend selection interface
 ├── vendor/                    # Composer dependencies (gitignored, included in releases)
 ├── composer.json
+├── phpcs.xml.dist             # PHPCS configuration (WordPress-Extra + PHPCompatibilityWP)
 ├── phpunit.xml.dist           # PHPUnit configuration
 └── wc-composable-product.php  # Main plugin file
 ```
@@ -140,11 +142,15 @@ Compile .po to .mo: `for po in languages/*.po; do msgfmt -o "${po%.po}.mo" "$po"
 
 WordPress requires compiled .mo files — .po files alone are insufficient.
 
-## Testing
+## Testing & Linting
 
 Run unit tests: `vendor/bin/phpunit --testdox`
 
-Tests use **Brain Monkey** to mock WordPress/WooCommerce functions without a full WP installation. WooCommerce classes (`WC_Product`, `WC_Settings_Page`, etc.) are provided as minimal stubs in `tests/stubs/` so PHP can parse `extends` declarations. The release workflow runs tests before building — a failing test blocks the release.
+Run coding standards check: `vendor/bin/phpcs`
+
+Auto-fix coding standard violations: `vendor/bin/phpcbf`
+
+Tests use **Brain Monkey** to mock WordPress/WooCommerce functions without a full WP installation. WooCommerce classes (`WC_Product`, `WC_Settings_Page`, etc.) are provided as minimal stubs in `tests/stubs/` so PHP can parse `extends` declarations. PHPCS uses the **WordPress-Extra** standard plus **PHPCompatibilityWP** for PHP version checks. The release workflow runs lint, phpcs, and tests before building — any failure blocks the release.
 
 ## Release Workflow
 

composer.json

@@ -20,8 +20,12 @@
     },
     "require-dev": {
         "brain/monkey": "^2.7",
+        "dealerdirect/phpcodesniffer-composer-installer": "^1.0",
         "mockery/mockery": "^1.6",
-        "phpunit/phpunit": "^9.6"
+        "phpcompatibility/phpcompatibility-wp": "*",
+        "phpunit/phpunit": "^10.0",
+        "squizlabs/php_codesniffer": "^3.7",
+        "wp-coding-standards/wpcs": "^3.0"
     },
     "autoload-dev": {
         "psr-4": {
@@ -30,6 +34,12 @@
     },
     "config": {
         "optimize-autoloader": true,
-        "sort-packages": true
+        "sort-packages": true,
+        "allow-plugins": {
+            "dealerdirect/phpcodesniffer-composer-installer": true
+        },
+        "platform": {
+            "php": "8.3.0"
+        }
     }
 }

includes/Admin/ProductData.php

@@ -7,7 +7,7 @@
 
 namespace Magdev\WcComposableProduct\Admin;
 
-defined('ABSPATH') || exit;
+defined( 'ABSPATH' ) || exit;
 
 /**
  * Product Data Tab Class
@@ -17,10 +17,10 @@ class ProductData {
 	 * Constructor
 	 */
 	public function __construct() {
-        add_filter('woocommerce_product_data_tabs', [$this, 'add_product_data_tab']);
+		add_filter( 'woocommerce_product_data_tabs', array( $this, 'add_product_data_tab' ) );
-        add_action('woocommerce_product_data_panels', [$this, 'add_product_data_panel']);
+		add_action( 'woocommerce_product_data_panels', array( $this, 'add_product_data_panel' ) );
-        add_action('woocommerce_process_product_meta_composable', [$this, 'save_product_data']);
+		add_action( 'woocommerce_process_product_meta_composable', array( $this, 'save_product_data' ) );
-        add_action('woocommerce_product_options_general_product_data', [$this, 'add_general_fields']);
+		add_action( 'woocommerce_product_options_general_product_data', array( $this, 'add_general_fields' ) );
 	}
 
 	/**
@@ -29,13 +29,13 @@ class ProductData {
 	 * @param array $tabs Product data tabs
 	 * @return array
 	 */
-    public function add_product_data_tab($tabs) {
+	public function add_product_data_tab( $tabs ) {
-        $tabs['composable'] = [
+		$tabs['composable'] = array(
-            'label' => __('Composable Options', 'wc-composable-product'),
+			'label'    => __( 'Composable Options', 'wc-composable-product' ),
 			'target'   => 'composable_product_data',
-            'class' => ['show_if_composable'],
+			'class'    => array( 'show_if_composable' ),
 			'priority' => 21,
-        ];
+		);
 		return $tabs;
 	}
 
@@ -45,42 +45,48 @@ class ProductData {
 	public function add_general_fields() {
 		global $product_object;
 
-        if ($product_object && $product_object->get_type() === 'composable') {
+		if ( $product_object && $product_object->get_type() === 'composable' ) {
 			echo '<div class="options_group show_if_composable">';
 
-            woocommerce_wp_text_input([
+			woocommerce_wp_text_input(
+				array(
 					'id'                => '_composable_selection_limit',
-                'label' => __('Selection Limit', 'wc-composable-product'),
+					'label'             => __( 'Selection Limit', 'wc-composable-product' ),
-                'description' => __('Maximum number of items customers can select. Leave empty to use global default.', 'wc-composable-product'),
+					'description'       => __( 'Maximum number of items customers can select. Leave empty to use global default.', 'wc-composable-product' ),
 					'desc_tip'          => true,
 					'type'              => 'number',
-                'custom_attributes' => [
+					'custom_attributes' => array(
 						'min'  => '1',
 						'step' => '1',
-                ],
+					),
-            ]);
+				)
+			);
 
-            woocommerce_wp_select([
+			woocommerce_wp_select(
+				array(
 					'id'          => '_composable_pricing_mode',
-                'label' => __('Pricing Mode', 'wc-composable-product'),
+					'label'       => __( 'Pricing Mode', 'wc-composable-product' ),
-                'description' => __('How to calculate the price.', 'wc-composable-product'),
+					'description' => __( 'How to calculate the price.', 'wc-composable-product' ),
 					'desc_tip'    => true,
-                'options' => [
+					'options'     => array(
-                    '' => __('Use global default', 'wc-composable-product'),
+						''      => __( 'Use global default', 'wc-composable-product' ),
-                    'sum' => __('Sum of selected products', 'wc-composable-product'),
+						'sum'   => __( 'Sum of selected products', 'wc-composable-product' ),
-                    'fixed' => __('Fixed price', 'wc-composable-product'),
+						'fixed' => __( 'Fixed price', 'wc-composable-product' ),
-                ],
+					),
-            ]);
+				)
+			);
 
-            woocommerce_wp_text_input([
+			woocommerce_wp_text_input(
+				array(
 					'id'            => '_regular_price',
-                'label' => __('Fixed Price', 'wc-composable-product') . ' (' . get_woocommerce_currency_symbol() . ')',
+					'label'         => __( 'Fixed Price', 'wc-composable-product' ) . ' (' . get_woocommerce_currency_symbol() . ')',
-                'description' => __('Enter the fixed price for this composable product.', 'wc-composable-product'),
+					'description'   => __( 'Enter the fixed price for this composable product.', 'wc-composable-product' ),
 					'desc_tip'      => true,
 					'type'          => 'text',
 					'data_type'     => 'price',
 					'wrapper_class' => 'composable_fixed_price_field',
-            ]);
+				)
+			);
 
 			echo '</div>';
 		}
@@ -95,85 +101,103 @@ class ProductData {
 		<div id="composable_product_data" class="panel woocommerce_options_panel hidden">
 			<div class="options_group">
 				<?php
-                woocommerce_wp_select([
+				woocommerce_wp_select(
+					array(
 						'id'          => '_composable_include_unpublished',
-                    'label' => __('Include Non-Public Products', 'wc-composable-product'),
+						'label'       => __( 'Include Non-Public Products', 'wc-composable-product' ),
-                    'description' => __('Allow draft and private products in the selection. Useful when products should only be sold as part of a composition.', 'wc-composable-product'),
+						'description' => __( 'Allow draft and private products in the selection. Useful when products should only be sold as part of a composition.', 'wc-composable-product' ),
 						'desc_tip'    => true,
-                    'options' => [
+						'options'     => array(
-                        '' => __('Use global default', 'wc-composable-product'),
+							''    => __( 'Use global default', 'wc-composable-product' ),
-                        'yes' => __('Yes', 'wc-composable-product'),
+							'yes' => __( 'Yes', 'wc-composable-product' ),
-                        'no' => __('No', 'wc-composable-product'),
+							'no'  => __( 'No', 'wc-composable-product' ),
-                    ],
+						),
-                    'value' => get_post_meta($post->ID, '_composable_include_unpublished', true) ?: '',
+						'value'       => get_post_meta( $post->ID, '_composable_include_unpublished', true ) ? get_post_meta( $post->ID, '_composable_include_unpublished', true ) : '',
-                ]);
+					)
+				);
 
-                woocommerce_wp_select([
+				woocommerce_wp_select(
+					array(
 						'id'          => '_composable_criteria_type',
-                    'label' => __('Selection Criteria', 'wc-composable-product'),
+						'label'       => __( 'Selection Criteria', 'wc-composable-product' ),
-                    'description' => __('How to select available products.', 'wc-composable-product'),
+						'description' => __( 'How to select available products.', 'wc-composable-product' ),
 						'desc_tip'    => true,
-                    'options' => [
+						'options'     => array(
-                        'category' => __('By Category', 'wc-composable-product'),
+							'category' => __( 'By Category', 'wc-composable-product' ),
-                        'tag' => __('By Tag', 'wc-composable-product'),
+							'tag'      => __( 'By Tag', 'wc-composable-product' ),
-                        'sku' => __('By SKU', 'wc-composable-product'),
+							'sku'      => __( 'By SKU', 'wc-composable-product' ),
-                    ],
+						),
-                    'value' => get_post_meta($post->ID, '_composable_criteria_type', true) ?: 'category',
+						'value'       => get_post_meta( $post->ID, '_composable_criteria_type', true ) ? get_post_meta( $post->ID, '_composable_criteria_type', true ) : 'category',
-                ]);
+					)
+				);
 				?>
 			</div>
 
 			<div class="options_group composable_criteria_group" id="composable_criteria_category">
 				<p class="form-field">
-                    <label for="_composable_categories"><?php esc_html_e('Select Categories', 'wc-composable-product'); ?></label>
+					<label for="_composable_categories"><?php esc_html_e( 'Select Categories', 'wc-composable-product' ); ?></label>
 					<select id="_composable_categories" name="_composable_categories[]" class="wc-enhanced-select" multiple="multiple" style="width: 50%;">
 						<?php
-                        $selected_categories = get_post_meta($post->ID, '_composable_categories', true) ?: [];
+						$selected_categories = get_post_meta( $post->ID, '_composable_categories', true );
-                        $categories = get_terms(['taxonomy' => 'product_cat', 'hide_empty' => false]);
+						$selected_categories = $selected_categories ? $selected_categories : array();
-                        foreach ($categories as $category) {
+						$categories          = get_terms(
+							array(
+								'taxonomy'   => 'product_cat',
+								'hide_empty' => false,
+							)
+						);
+						foreach ( $categories as $category ) {
 							printf(
 								'<option value="%s" %s>%s</option>',
-                                esc_attr($category->term_id),
+								esc_attr( $category->term_id ),
-                                selected(in_array($category->term_id, (array) $selected_categories), true, false),
+								selected( in_array( $category->term_id, (array) $selected_categories, true ), true, false ),
-                                esc_html($category->name)
+								esc_html( $category->name )
 							);
 						}
 						?>
 					</select>
-                    <span class="description"><?php esc_html_e('Select product categories to include.', 'wc-composable-product'); ?></span>
+					<span class="description"><?php esc_html_e( 'Select product categories to include.', 'wc-composable-product' ); ?></span>
 				</p>
 			</div>
 
 			<div class="options_group composable_criteria_group" id="composable_criteria_tag" style="display: none;">
 				<p class="form-field">
-                    <label for="_composable_tags"><?php esc_html_e('Select Tags', 'wc-composable-product'); ?></label>
+					<label for="_composable_tags"><?php esc_html_e( 'Select Tags', 'wc-composable-product' ); ?></label>
 					<select id="_composable_tags" name="_composable_tags[]" class="wc-enhanced-select" multiple="multiple" style="width: 50%;">
 						<?php
-                        $selected_tags = get_post_meta($post->ID, '_composable_tags', true) ?: [];
+						$selected_tags = get_post_meta( $post->ID, '_composable_tags', true );
-                        $tags = get_terms(['taxonomy' => 'product_tag', 'hide_empty' => false]);
+						$selected_tags = $selected_tags ? $selected_tags : array();
-                        foreach ($tags as $tag) {
+						$tags          = get_terms(
+							array(
+								'taxonomy'   => 'product_tag',
+								'hide_empty' => false,
+							)
+						);
+						foreach ( $tags as $tag ) {
 							printf(
 								'<option value="%s" %s>%s</option>',
-                                esc_attr($tag->term_id),
+								esc_attr( $tag->term_id ),
-                                selected(in_array($tag->term_id, (array) $selected_tags), true, false),
+								selected( in_array( $tag->term_id, (array) $selected_tags, true ), true, false ),
-                                esc_html($tag->name)
+								esc_html( $tag->name )
 							);
 						}
 						?>
 					</select>
-                    <span class="description"><?php esc_html_e('Select product tags to include.', 'wc-composable-product'); ?></span>
+					<span class="description"><?php esc_html_e( 'Select product tags to include.', 'wc-composable-product' ); ?></span>
 				</p>
 			</div>
 
 			<div class="options_group composable_criteria_group" id="composable_criteria_sku" style="display: none;">
 				<?php
-                woocommerce_wp_textarea_input([
+				woocommerce_wp_textarea_input(
+					array(
 						'id'          => '_composable_skus',
-                    'label' => __('Product SKUs', 'wc-composable-product'),
+						'label'       => __( 'Product SKUs', 'wc-composable-product' ),
-                    'description' => __('Enter product SKUs separated by commas.', 'wc-composable-product'),
+						'description' => __( 'Enter product SKUs separated by commas.', 'wc-composable-product' ),
 						'desc_tip'    => true,
-                    'placeholder' => __('SKU-1, SKU-2, SKU-3', 'wc-composable-product'),
+						'placeholder' => __( 'SKU-1, SKU-2, SKU-3', 'wc-composable-product' ),
-                ]);
+					)
+				);
 				?>
 			</div>
 		</div>
@@ -185,33 +209,37 @@ class ProductData {
 	 *
 	 * @param int $post_id Post ID
 	 */
-    public function save_product_data($post_id) {
+	public function save_product_data( $post_id ) {
-        // Save selection limit
+		// phpcs:disable WordPress.Security.NonceVerification.Missing -- nonce verified by WooCommerce in woocommerce_process_product_meta.
-        $selection_limit = isset($_POST['_composable_selection_limit']) ? absint($_POST['_composable_selection_limit']) : '';
-        update_post_meta($post_id, '_composable_selection_limit', $selection_limit);
 
-        // Save pricing mode
+		// Save selection limit.
-        $pricing_mode = isset($_POST['_composable_pricing_mode']) ? sanitize_text_field($_POST['_composable_pricing_mode']) : '';
+		$selection_limit = isset( $_POST['_composable_selection_limit'] ) ? absint( $_POST['_composable_selection_limit'] ) : '';
-        update_post_meta($post_id, '_composable_pricing_mode', $pricing_mode);
+		update_post_meta( $post_id, '_composable_selection_limit', $selection_limit );
 
-        // Save include unpublished
+		// Save pricing mode.
-        $include_unpublished = isset($_POST['_composable_include_unpublished']) ? sanitize_text_field($_POST['_composable_include_unpublished']) : '';
+		$pricing_mode = isset( $_POST['_composable_pricing_mode'] ) ? sanitize_text_field( $_POST['_composable_pricing_mode'] ) : '';
-        update_post_meta($post_id, '_composable_include_unpublished', $include_unpublished);
+		update_post_meta( $post_id, '_composable_pricing_mode', $pricing_mode );
 
-        // Save criteria type
+		// Save include unpublished.
-        $criteria_type = isset($_POST['_composable_criteria_type']) ? sanitize_text_field($_POST['_composable_criteria_type']) : 'category';
+		$include_unpublished = isset( $_POST['_composable_include_unpublished'] ) ? sanitize_text_field( $_POST['_composable_include_unpublished'] ) : '';
-        update_post_meta($post_id, '_composable_criteria_type', $criteria_type);
+		update_post_meta( $post_id, '_composable_include_unpublished', $include_unpublished );
 
-        // Save categories
+		// Save criteria type.
-        $categories = isset($_POST['_composable_categories']) ? array_map('absint', $_POST['_composable_categories']) : [];
+		$criteria_type = isset( $_POST['_composable_criteria_type'] ) ? sanitize_text_field( $_POST['_composable_criteria_type'] ) : 'category';
-        update_post_meta($post_id, '_composable_categories', $categories);
+		update_post_meta( $post_id, '_composable_criteria_type', $criteria_type );
 
-        // Save tags
+		// Save categories.
-        $tags = isset($_POST['_composable_tags']) ? array_map('absint', $_POST['_composable_tags']) : [];
+		$categories = isset( $_POST['_composable_categories'] ) ? array_map( 'absint', $_POST['_composable_categories'] ) : array();
-        update_post_meta($post_id, '_composable_tags', $tags);
+		update_post_meta( $post_id, '_composable_categories', $categories );
 
-        // Save SKUs
+		// Save tags.
-        $skus = isset($_POST['_composable_skus']) ? sanitize_textarea_field($_POST['_composable_skus']) : '';
+		$tags = isset( $_POST['_composable_tags'] ) ? array_map( 'absint', $_POST['_composable_tags'] ) : array();
-        update_post_meta($post_id, '_composable_skus', $skus);
+		update_post_meta( $post_id, '_composable_tags', $tags );
+
+		// Save SKUs.
+		$skus = isset( $_POST['_composable_skus'] ) ? sanitize_textarea_field( $_POST['_composable_skus'] ) : '';
+		update_post_meta( $post_id, '_composable_skus', $skus );
+
+		// phpcs:enable WordPress.Security.NonceVerification.Missing
 	}
 }

includes/Admin/Settings.php

@@ -7,7 +7,7 @@
 
 namespace Magdev\WcComposableProduct\Admin;
 
-defined('ABSPATH') || exit;
+defined( 'ABSPATH' ) || exit;
 
 /**
  * Settings class
@@ -18,7 +18,7 @@ class Settings extends \WC_Settings_Page {
 	 */
 	public function __construct() {
 		$this->id    = 'composable_products';
-        $this->label = __('Composable Products', 'wc-composable-product');
+		$this->label = __( 'Composable Products', 'wc-composable-product' );
 
 		parent::__construct();
 	}
@@ -29,72 +29,72 @@ class Settings extends \WC_Settings_Page {
 	 * @return array
 	 */
 	public function get_settings() {
-        $settings = [
+		$settings = array(
-            [
+			array(
-                'title' => __('Composable Products Settings', 'wc-composable-product'),
+				'title' => __( 'Composable Products Settings', 'wc-composable-product' ),
 				'type'  => 'title',
-                'desc' => __('Configure default settings for composable products.', 'wc-composable-product'),
+				'desc'  => __( 'Configure default settings for composable products.', 'wc-composable-product' ),
 				'id'    => 'wc_composable_settings',
-            ],
+			),
-            [
+			array(
-                'title' => __('Default Selection Limit', 'wc-composable-product'),
+				'title'             => __( 'Default Selection Limit', 'wc-composable-product' ),
-                'desc' => __('Default number of items customers can select.', 'wc-composable-product'),
+				'desc'              => __( 'Default number of items customers can select.', 'wc-composable-product' ),
 				'id'                => 'wc_composable_default_limit',
 				'type'              => 'number',
 				'default'           => '5',
-                'custom_attributes' => [
+				'custom_attributes' => array(
 					'min'  => '1',
 					'step' => '1',
-                ],
+				),
 				'desc_tip'          => true,
-            ],
+			),
-            [
+			array(
-                'title' => __('Default Pricing Mode', 'wc-composable-product'),
+				'title'    => __( 'Default Pricing Mode', 'wc-composable-product' ),
-                'desc' => __('How to calculate the price of composable products.', 'wc-composable-product'),
+				'desc'     => __( 'How to calculate the price of composable products.', 'wc-composable-product' ),
 				'id'       => 'wc_composable_default_pricing',
 				'type'     => 'select',
 				'default'  => 'sum',
-                'options' => [
+				'options'  => array(
-                    'sum' => __('Sum of selected products', 'wc-composable-product'),
+					'sum'   => __( 'Sum of selected products', 'wc-composable-product' ),
-                    'fixed' => __('Fixed price', 'wc-composable-product'),
+					'fixed' => __( 'Fixed price', 'wc-composable-product' ),
-                ],
+				),
 				'desc_tip' => true,
-            ],
+			),
-            [
+			array(
-                'title' => __('Include Non-Public Products', 'wc-composable-product'),
+				'title'   => __( 'Include Non-Public Products', 'wc-composable-product' ),
-                'desc' => __('Allow draft and private products to appear in composable product selections. Useful when products should only be sold as part of a composition, not individually.', 'wc-composable-product'),
+				'desc'    => __( 'Allow draft and private products to appear in composable product selections. Useful when products should only be sold as part of a composition, not individually.', 'wc-composable-product' ),
 				'id'      => 'wc_composable_include_unpublished',
 				'type'    => 'checkbox',
 				'default' => 'no',
-            ],
+			),
-            [
+			array(
-                'title' => __('Show Product Images', 'wc-composable-product'),
+				'title'   => __( 'Show Product Images', 'wc-composable-product' ),
-                'desc' => __('Display product images in the selection interface.', 'wc-composable-product'),
+				'desc'    => __( 'Display product images in the selection interface.', 'wc-composable-product' ),
 				'id'      => 'wc_composable_show_images',
 				'type'    => 'checkbox',
 				'default' => 'yes',
-            ],
+			),
-            [
+			array(
-                'title' => __('Show Product Prices', 'wc-composable-product'),
+				'title'   => __( 'Show Product Prices', 'wc-composable-product' ),
-                'desc' => __('Display individual product prices in the selection interface.', 'wc-composable-product'),
+				'desc'    => __( 'Display individual product prices in the selection interface.', 'wc-composable-product' ),
 				'id'      => 'wc_composable_show_prices',
 				'type'    => 'checkbox',
 				'default' => 'yes',
-            ],
+			),
-            [
+			array(
-                'title' => __('Show Total Price', 'wc-composable-product'),
+				'title'   => __( 'Show Total Price', 'wc-composable-product' ),
-                'desc' => __('Display the total price as customers make selections.', 'wc-composable-product'),
+				'desc'    => __( 'Display the total price as customers make selections.', 'wc-composable-product' ),
 				'id'      => 'wc_composable_show_total',
 				'type'    => 'checkbox',
 				'default' => 'yes',
-            ],
+			),
-            [
+			array(
 				'type' => 'sectionend',
 				'id'   => 'wc_composable_settings',
-            ],
+			),
-        ];
+		);
 
-        return apply_filters('wc_composable_settings', $settings);
+		return apply_filters( 'wc_composable_settings', $settings );
 	}
 
 	/**
@@ -102,7 +102,7 @@ class Settings extends \WC_Settings_Page {
 	 */
 	public function output() {
 		$settings = $this->get_settings();
-        \WC_Admin_Settings::output_fields($settings);
+		\WC_Admin_Settings::output_fields( $settings );
 	}
 
 	/**
@@ -110,6 +110,6 @@ class Settings extends \WC_Settings_Page {
 	 */
 	public function save() {
 		$settings = $this->get_settings();
-        \WC_Admin_Settings::save_fields($settings);
+		\WC_Admin_Settings::save_fields( $settings );
 	}
 }

includes/CartHandler.php

@@ -7,7 +7,7 @@
 
 namespace Magdev\WcComposableProduct;
 
-defined('ABSPATH') || exit;
+defined( 'ABSPATH' ) || exit;
 
 /**
  * Cart Handler Class
@@ -28,14 +28,14 @@ class CartHandler {
 	public function __construct() {
 		$this->stock_manager = new StockManager();
 
-        add_filter('woocommerce_add_to_cart_validation', [$this, 'validate_add_to_cart'], 10, 3);
+		add_filter( 'woocommerce_add_to_cart_validation', array( $this, 'validate_add_to_cart' ), 10, 3 );
-        add_filter('woocommerce_add_cart_item_data', [$this, 'add_cart_item_data'], 10, 2);
+		add_filter( 'woocommerce_add_cart_item_data', array( $this, 'add_cart_item_data' ), 10, 2 );
-        add_filter('woocommerce_get_cart_item_from_session', [$this, 'get_cart_item_from_session'], 10, 2);
+		add_filter( 'woocommerce_get_cart_item_from_session', array( $this, 'get_cart_item_from_session' ), 10, 2 );
-        add_filter('woocommerce_get_item_data', [$this, 'display_cart_item_data'], 10, 2);
+		add_filter( 'woocommerce_get_item_data', array( $this, 'display_cart_item_data' ), 10, 2 );
-        add_action('woocommerce_before_calculate_totals', [$this, 'calculate_cart_item_price']);
+		add_action( 'woocommerce_before_calculate_totals', array( $this, 'calculate_cart_item_price' ) );
-        add_action('woocommerce_single_product_summary', [$this, 'render_product_selector'], 25);
+		add_action( 'woocommerce_single_product_summary', array( $this, 'render_product_selector' ), 25 );
-        add_action('woocommerce_checkout_create_order_line_item', [$this->stock_manager, 'store_selected_products_in_order'], 10, 3);
+		add_action( 'woocommerce_checkout_create_order_line_item', array( $this->stock_manager, 'store_selected_products_in_order' ), 10, 3 );
-        add_filter('woocommerce_is_purchasable', [$this, 'hide_default_add_to_cart'], 10, 2);
+		add_filter( 'woocommerce_is_purchasable', array( $this, 'hide_default_add_to_cart' ), 10, 2 );
 	}
 
 	/**
@@ -45,8 +45,8 @@ class CartHandler {
 	 * @param \WC_Product $product Product object
 	 * @return bool
 	 */
-    public function hide_default_add_to_cart($is_purchasable, $product) {
+	public function hide_default_add_to_cart( $is_purchasable, $product ) {
-        if ($product && $product->get_type() === 'composable') {
+		if ( $product && $product->get_type() === 'composable' ) {
 			return false;
 		}
 		return $is_purchasable;
@@ -58,8 +58,8 @@ class CartHandler {
 	public function render_product_selector() {
 		global $product;
 
-        if ($product && $product->get_type() === 'composable') {
+		if ( $product && $product->get_type() === 'composable' ) {
-            ProductSelector::render($product);
+			ProductSelector::render( $product );
 		}
 	}
 
@@ -71,51 +71,56 @@ class CartHandler {
 	 * @param int $quantity Quantity
 	 * @return bool
 	 */
-    public function validate_add_to_cart($passed, $product_id, $quantity) {
+	public function validate_add_to_cart( $passed, $product_id, $quantity ) {
-        $product = wc_get_product($product_id);
+		$product = wc_get_product( $product_id );
 
-        if (!$product || $product->get_type() !== 'composable') {
+		if ( ! $product || $product->get_type() !== 'composable' ) {
 			return $passed;
 		}
 
-        // Check if selected products are provided
+		// Check if selected products are provided.
-        if (!isset($_POST['composable_products']) || empty($_POST['composable_products'])) {
+		// phpcs:ignore WordPress.Security.NonceVerification.Missing -- nonce verified by WooCommerce add-to-cart handler.
-            wc_add_notice(__('Please select at least one product.', 'wc-composable-product'), 'error');
+		if ( ! isset( $_POST['composable_products'] ) || empty( $_POST['composable_products'] ) ) {
+			wc_add_notice( __( 'Please select at least one product.', 'wc-composable-product' ), 'error' );
 			return false;
 		}
 
-        $selected_products = array_map('absint', $_POST['composable_products']);
+		// phpcs:ignore WordPress.Security.NonceVerification.Missing -- nonce verified by WooCommerce add-to-cart handler.
+		$selected_products = array_map( 'absint', $_POST['composable_products'] );
 		$selection_limit   = $product->get_selection_limit();
 
 		// Validate selection limit
-        if (count($selected_products) > $selection_limit) {
+		if ( count( $selected_products ) > $selection_limit ) {
 			/* translators: %d: selection limit */
-            wc_add_notice(sprintf(__('You can select a maximum of %d products.', 'wc-composable-product'), $selection_limit), 'error');
+			wc_add_notice( sprintf( __( 'You can select a maximum of %d products.', 'wc-composable-product' ), $selection_limit ), 'error' );
 			return false;
 		}
 
-        if (count($selected_products) === 0) {
+		if ( count( $selected_products ) === 0 ) {
-            wc_add_notice(__('Please select at least one product.', 'wc-composable-product'), 'error');
+			wc_add_notice( __( 'Please select at least one product.', 'wc-composable-product' ), 'error' );
 			return false;
 		}
 
 		// Validate that selected products are valid
 		$available_products = $product->get_available_products();
-        $available_ids = array_map(function($p) {
+		$available_ids      = array_map(
+			function ( $p ) {
 				return $p->get_id();
-        }, $available_products);
+			},
+			$available_products
+		);
 
-        foreach ($selected_products as $selected_id) {
+		foreach ( $selected_products as $selected_id ) {
-            if (!in_array($selected_id, $available_ids)) {
+			if ( ! in_array( $selected_id, $available_ids, true ) ) {
-                wc_add_notice(__('One or more selected products are not available.', 'wc-composable-product'), 'error');
+				wc_add_notice( __( 'One or more selected products are not available.', 'wc-composable-product' ), 'error' );
 				return false;
 			}
 		}
 
 		// Validate stock availability
-        $stock_validation = $this->stock_manager->validate_stock_availability($selected_products, $quantity);
+		$stock_validation = $this->stock_manager->validate_stock_availability( $selected_products, $quantity );
-        if ($stock_validation !== true) {
+		if ( true !== $stock_validation ) {
-            wc_add_notice($stock_validation, 'error');
+			wc_add_notice( $stock_validation, 'error' );
 			return false;
 		}
 
@@ -129,19 +134,21 @@ class CartHandler {
 	 * @param int $product_id Product ID
 	 * @return array
 	 */
-    public function add_cart_item_data($cart_item_data, $product_id) {
+	public function add_cart_item_data( $cart_item_data, $product_id ) {
-        $product = wc_get_product($product_id);
+		$product = wc_get_product( $product_id );
 
-        if (!$product || $product->get_type() !== 'composable') {
+		if ( ! $product || $product->get_type() !== 'composable' ) {
 			return $cart_item_data;
 		}
 
-        if (isset($_POST['composable_products']) && !empty($_POST['composable_products'])) {
+		// phpcs:ignore WordPress.Security.NonceVerification.Missing -- nonce verified by WooCommerce add-to-cart handler.
-            $selected_products = array_map('absint', $_POST['composable_products']);
+		if ( isset( $_POST['composable_products'] ) && ! empty( $_POST['composable_products'] ) ) {
+			// phpcs:ignore WordPress.Security.NonceVerification.Missing -- nonce verified by WooCommerce add-to-cart handler.
+			$selected_products                     = array_map( 'absint', $_POST['composable_products'] );
 			$cart_item_data['composable_products'] = $selected_products;
 
-            // Make cart item unique
+			// Make cart item unique.
-            $cart_item_data['unique_key'] = md5(json_encode($selected_products) . time());
+			$cart_item_data['unique_key'] = md5( wp_json_encode( $selected_products ) . time() );
 		}
 
 		return $cart_item_data;
@@ -154,8 +161,8 @@ class CartHandler {
 	 * @param array $values Values from session
 	 * @return array
 	 */
-    public function get_cart_item_from_session($cart_item, $values) {
+	public function get_cart_item_from_session( $cart_item, $values ) {
-        if (isset($values['composable_products'])) {
+		if ( isset( $values['composable_products'] ) ) {
 			$cart_item['composable_products'] = $values['composable_products'];
 		}
 
@@ -169,21 +176,21 @@ class CartHandler {
 	 * @param array $cart_item Cart item
 	 * @return array
 	 */
-    public function display_cart_item_data($item_data, $cart_item) {
+	public function display_cart_item_data( $item_data, $cart_item ) {
-        if (isset($cart_item['composable_products']) && !empty($cart_item['composable_products'])) {
+		if ( isset( $cart_item['composable_products'] ) && ! empty( $cart_item['composable_products'] ) ) {
-            $product_names = [];
+			$product_names = array();
-            foreach ($cart_item['composable_products'] as $product_id) {
+			foreach ( $cart_item['composable_products'] as $product_id ) {
-                $product = wc_get_product($product_id);
+				$product = wc_get_product( $product_id );
-                if ($product) {
+				if ( $product ) {
 					$product_names[] = $product->get_name();
 				}
 			}
 
-            if (!empty($product_names)) {
+			if ( ! empty( $product_names ) ) {
-                $item_data[] = [
+				$item_data[] = array(
-                    'key' => __('Selected Products', 'wc-composable-product'),
+					'key'   => __( 'Selected Products', 'wc-composable-product' ),
-                    'value' => implode(', ', $product_names),
+					'value' => implode( ', ', $product_names ),
-                ];
+				);
 			}
 		}
 
@@ -195,23 +202,23 @@ class CartHandler {
 	 *
 	 * @param \WC_Cart $cart Cart object
 	 */
-    public function calculate_cart_item_price($cart) {
+	public function calculate_cart_item_price( $cart ) {
-        if (is_admin() && !defined('DOING_AJAX')) {
+		if ( is_admin() && ! defined( 'DOING_AJAX' ) ) {
 			return;
 		}
 
 		// Use static flag to prevent multiple executions within the same request
 		static $already_calculated = false;
-        if ($already_calculated) {
+		if ( $already_calculated ) {
 			return;
 		}
 
-        foreach ($cart->get_cart() as $cart_item_key => $cart_item) {
+		foreach ( $cart->get_cart() as $cart_item_key => $cart_item ) {
-            if (isset($cart_item['data']) && $cart_item['data']->get_type() === 'composable') {
+			if ( isset( $cart_item['data'] ) && $cart_item['data']->get_type() === 'composable' ) {
-                if (isset($cart_item['composable_products'])) {
+				if ( isset( $cart_item['composable_products'] ) ) {
 					$product = $cart_item['data'];
-                    $price = $product->calculate_composed_price($cart_item['composable_products']);
+					$price   = $product->calculate_composed_price( $cart_item['composable_products'] );
-                    $cart_item['data']->set_price($price);
+					$cart_item['data']->set_price( $price );
 				}
 			}
 		}

includes/Plugin.php

@@ -7,7 +7,7 @@
 
 namespace Magdev\WcComposableProduct;
 
-defined('ABSPATH') || exit;
+defined( 'ABSPATH' ) || exit;
 
 /**
  * Main plugin class - Singleton pattern
@@ -35,7 +35,7 @@ class Plugin {
 	 * @return Plugin
 	 */
 	public static function instance() {
-        if (is_null(self::$instance)) {
+		if ( is_null( self::$instance ) ) {
 			self::$instance = new self();
 		}
 		return self::$instance;
@@ -55,41 +55,50 @@ class Plugin {
 	 */
 	private function init_hooks() {
 		// Register product type
-        add_filter('product_type_selector', [$this, 'add_product_type']);
+		add_filter( 'product_type_selector', array( $this, 'add_product_type' ) );
-        add_filter('woocommerce_product_class', [$this, 'product_class'], 10, 2);
+		add_filter( 'woocommerce_product_class', array( $this, 'product_class' ), 10, 2 );
 
 		// Enqueue scripts and styles
-        add_action('wp_enqueue_scripts', [$this, 'enqueue_frontend_scripts']);
+		add_action( 'wp_enqueue_scripts', array( $this, 'enqueue_frontend_scripts' ) );
-        add_action('admin_enqueue_scripts', [$this, 'enqueue_admin_scripts']);
+		add_action( 'admin_enqueue_scripts', array( $this, 'enqueue_admin_scripts' ) );
 
 		// Admin settings
-        add_filter('woocommerce_get_settings_pages', [$this, 'add_settings_page']);
+		add_filter( 'woocommerce_get_settings_pages', array( $this, 'add_settings_page' ) );
 	}
 
 	/**
 	 * Initialize Twig template engine
 	 */
 	private function init_twig() {
-        $loader = new \Twig\Loader\FilesystemLoader(WC_COMPOSABLE_PRODUCT_PATH . 'templates');
+		$loader     = new \Twig\Loader\FilesystemLoader( WC_COMPOSABLE_PRODUCT_PATH . 'templates' );
-        $this->twig = new \Twig\Environment($loader, [
+		$this->twig = new \Twig\Environment(
+			$loader,
+			array(
 				'cache'       => WC_COMPOSABLE_PRODUCT_PATH . 'cache',
 				'auto_reload' => true,
-            'debug' => defined('WP_DEBUG') && WP_DEBUG,
+				'debug'       => defined( 'WP_DEBUG' ) && WP_DEBUG,
-        ]);
+			)
+		);
 
 		// Add WordPress functions to Twig
-        $this->twig->addFunction(new \Twig\TwigFunction('__', function($text) {
+		$this->twig->addFunction(
-            return __($text, 'wc-composable-product');
+			new \Twig\TwigFunction(
-        }));
+				'__',
-        $this->twig->addFunction(new \Twig\TwigFunction('esc_html', 'esc_html'));
+				function ( $text ) {
-        $this->twig->addFunction(new \Twig\TwigFunction('esc_attr', 'esc_attr'));
+					// phpcs:ignore WordPress.WP.I18n.NonSingularStringLiteralText -- dynamic Twig template strings.
-        $this->twig->addFunction(new \Twig\TwigFunction('esc_url', 'esc_url'));
+					return __( $text, 'wc-composable-product' );
-        $this->twig->addFunction(new \Twig\TwigFunction('wc_price', 'wc_price'));
+				}
+			)
+		);
+		$this->twig->addFunction( new \Twig\TwigFunction( 'esc_html', 'esc_html' ) );
+		$this->twig->addFunction( new \Twig\TwigFunction( 'esc_attr', 'esc_attr' ) );
+		$this->twig->addFunction( new \Twig\TwigFunction( 'esc_url', 'esc_url' ) );
+		$this->twig->addFunction( new \Twig\TwigFunction( 'wc_price', 'wc_price' ) );
 
 		// Add WordPress escaping functions as Twig filters
-        $this->twig->addFilter(new \Twig\TwigFilter('esc_html', 'esc_html'));
+		$this->twig->addFilter( new \Twig\TwigFilter( 'esc_html', 'esc_html' ) );
-        $this->twig->addFilter(new \Twig\TwigFilter('esc_attr', 'esc_attr'));
+		$this->twig->addFilter( new \Twig\TwigFilter( 'esc_attr', 'esc_attr' ) );
-        $this->twig->addFilter(new \Twig\TwigFilter('esc_url', 'esc_url'));
+		$this->twig->addFilter( new \Twig\TwigFilter( 'esc_url', 'esc_url' ) );
 	}
 
 	/**
@@ -115,8 +124,8 @@ class Plugin {
 	 * @param array $types Product types
 	 * @return array
 	 */
-    public function add_product_type($types) {
+	public function add_product_type( $types ) {
-        $types['composable'] = __('Composable product', 'wc-composable-product');
+		$types['composable'] = __( 'Composable product', 'wc-composable-product' );
 		return $types;
 	}
 
@@ -127,8 +136,8 @@ class Plugin {
 	 * @param string $product_type Product type
 	 * @return string
 	 */
-    public function product_class($classname, $product_type) {
+	public function product_class( $classname, $product_type ) {
-        if ($product_type === 'composable') {
+		if ( 'composable' === $product_type ) {
 			$classname = 'Magdev\WcComposableProduct\ProductType';
 		}
 		return $classname;
@@ -138,59 +147,63 @@ class Plugin {
 	 * Enqueue frontend scripts and styles
 	 */
 	public function enqueue_frontend_scripts() {
-        if (is_product()) {
+		if ( is_product() ) {
 			wp_enqueue_style(
 				'wc-composable-product',
 				WC_COMPOSABLE_PRODUCT_URL . 'assets/css/frontend.css',
-                [],
+				array(),
 				WC_COMPOSABLE_PRODUCT_VERSION
 			);
 
 			wp_enqueue_script(
 				'wc-composable-product',
 				WC_COMPOSABLE_PRODUCT_URL . 'assets/js/frontend.js',
-                ['jquery'],
+				array( 'jquery' ),
 				WC_COMPOSABLE_PRODUCT_VERSION,
 				true
 			);
 
-            wp_localize_script('wc-composable-product', 'wcComposableProduct', [
+			wp_localize_script(
-                'ajax_url' => admin_url('admin-ajax.php'),
+				'wc-composable-product',
-                'nonce' => wp_create_nonce('wc_composable_product_nonce'),
+				'wcComposableProduct',
-                'i18n' => [
+				array(
-                    'select_items' => __('Please select items', 'wc-composable-product'),
+					'ajax_url'     => admin_url( 'admin-ajax.php' ),
-                    'max_items' => __('Maximum items selected', 'wc-composable-product'),
+					'nonce'        => wp_create_nonce( 'wc_composable_product_nonce' ),
-                    'min_items' => __('Please select at least one item', 'wc-composable-product'),
+					'i18n'         => array(
-                ],
+						'select_items' => __( 'Please select items', 'wc-composable-product' ),
-                'price_format' => [
+						'max_items'    => __( 'Maximum items selected', 'wc-composable-product' ),
+						'min_items'    => __( 'Please select at least one item', 'wc-composable-product' ),
+					),
+					'price_format' => array(
 						'currency_symbol'    => get_woocommerce_currency_symbol(),
 						'decimal_separator'  => wc_get_price_decimal_separator(),
 						'thousand_separator' => wc_get_price_thousand_separator(),
 						'decimals'           => wc_get_price_decimals(),
 						'price_format'       => get_woocommerce_price_format(),
-                ],
+					),
-            ]);
+				)
+			);
 		}
 	}
 
 	/**
 	 * Enqueue admin scripts and styles
 	 */
-    public function enqueue_admin_scripts($hook) {
+	public function enqueue_admin_scripts( $hook ) {
-        if ('post.php' === $hook || 'post-new.php' === $hook) {
+		if ( 'post.php' === $hook || 'post-new.php' === $hook ) {
 			global $post_type;
-            if ('product' === $post_type) {
+			if ( 'product' === $post_type ) {
 				wp_enqueue_style(
 					'wc-composable-product-admin',
 					WC_COMPOSABLE_PRODUCT_URL . 'assets/css/admin.css',
-                    [],
+					array(),
 					WC_COMPOSABLE_PRODUCT_VERSION
 				);
 
 				wp_enqueue_script(
 					'wc-composable-product-admin',
 					WC_COMPOSABLE_PRODUCT_URL . 'assets/js/admin.js',
-                    ['jquery', 'wc-admin-product-meta-boxes'],
+					array( 'jquery', 'wc-admin-product-meta-boxes' ),
 					WC_COMPOSABLE_PRODUCT_VERSION,
 					true
 				);
@@ -204,7 +217,7 @@ class Plugin {
 	 * @param array $settings WooCommerce settings pages
 	 * @return array
 	 */
-    public function add_settings_page($settings) {
+	public function add_settings_page( $settings ) {
 		// Include Settings.php here, when WC_Settings_Page is guaranteed to be loaded
 		require_once WC_COMPOSABLE_PRODUCT_PATH . 'includes/Admin/Settings.php';
 		$settings[] = new Admin\Settings();
@@ -227,7 +240,7 @@ class Plugin {
 	 * @param array $context Template variables
 	 * @return string
 	 */
-    public function render_template($template, $context = []) {
+	public function render_template( $template, $context = array() ) {
-        return $this->twig->render($template, $context);
+		return $this->twig->render( $template, $context );
 	}
 }

includes/ProductSelector.php

@@ -7,7 +7,7 @@
 
 namespace Magdev\WcComposableProduct;
 
-defined('ABSPATH') || exit;
+defined( 'ABSPATH' ) || exit;
 
 /**
  * Product Selector Class
@@ -20,8 +20,8 @@ class ProductSelector {
 	 *
 	 * @param ProductType $product Composable product
 	 */
-    public static function render($product) {
+	public static function render( $product ) {
-        if (!$product || $product->get_type() !== 'composable') {
+		if ( ! $product || $product->get_type() !== 'composable' ) {
 			return;
 		}
 
@@ -29,34 +29,34 @@ class ProductSelector {
 		$selection_limit    = $product->get_selection_limit();
 		$pricing_mode       = $product->get_pricing_mode();
 
-        $show_images = get_option('wc_composable_show_images', 'yes') === 'yes';
+		$show_images = get_option( 'wc_composable_show_images', 'yes' ) === 'yes';
-        $show_prices = get_option('wc_composable_show_prices', 'yes') === 'yes';
+		$show_prices = get_option( 'wc_composable_show_prices', 'yes' ) === 'yes';
-        $show_total = get_option('wc_composable_show_total', 'yes') === 'yes';
+		$show_total  = get_option( 'wc_composable_show_total', 'yes' ) === 'yes';
 
 		// Get stock manager for stock information
 		$stock_manager = new StockManager();
 
 		// Prepare product data for template
-        $products_data = [];
+		$products_data = array();
-        foreach ($available_products as $available_product) {
+		foreach ( $available_products as $available_product ) {
-            $stock_info = $stock_manager->get_product_stock_info($available_product->get_id());
+			$stock_info = $stock_manager->get_product_stock_info( $available_product->get_id() );
 
-            $products_data[] = [
+			$products_data[] = array(
 				'id'                 => $available_product->get_id(),
 				'name'               => $available_product->get_name(),
 				'price'              => $available_product->get_price(),
 				'price_html'         => $available_product->get_price_html(),
-                'image_url' => wp_get_attachment_image_url($available_product->get_image_id(), 'thumbnail'),
+				'image_url'          => wp_get_attachment_image_url( $available_product->get_image_id(), 'thumbnail' ),
 				'permalink'          => $available_product->get_permalink(),
 				'stock_status'       => $stock_info['stock_status'],
 				'in_stock'           => $stock_info['in_stock'],
 				'stock_quantity'     => $stock_info['stock_quantity'],
 				'managing_stock'     => $stock_info['managing_stock'],
 				'backorders_allowed' => $stock_info['backorders_allowed'],
-            ];
+			);
 		}
 
-        $context = [
+		$context = array(
 			'product_id'       => $product->get_id(),
 			'products'         => $products_data,
 			'selection_limit'  => $selection_limit,
@@ -65,13 +65,14 @@ class ProductSelector {
 			'show_prices'      => $show_prices,
 			'show_total'       => $show_total,
 			'fixed_price'      => $product->get_price(),
-            'fixed_price_html' => wc_price($product->get_price()),
+			'fixed_price_html' => wc_price( $product->get_price() ),
-            'zero_price_html' => wc_price(0),
+			'zero_price_html'  => wc_price( 0 ),
 			'currency_symbol'  => get_woocommerce_currency_symbol(),
-        ];
+		);
 
-        // Render template
+		// Render template — Twig handles escaping via registered esc_html/esc_attr/esc_url functions.
 		$plugin = Plugin::instance();
-        echo $plugin->render_template('product-selector.twig', $context);
+		// phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- output escaped by Twig template.
+		echo $plugin->render_template( 'product-selector.twig', $context );
 	}
 }

includes/ProductType.php

@@ -7,7 +7,7 @@
 
 namespace Magdev\WcComposableProduct;
 
-defined('ABSPATH') || exit;
+defined( 'ABSPATH' ) || exit;
 
 /**
  * Composable Product Type Class
@@ -25,9 +25,9 @@ class ProductType extends \WC_Product {
 	 *
 	 * @param mixed $product Product ID or object
 	 */
-    public function __construct($product = 0) {
+	public function __construct( $product = 0 ) {
 		$this->supports[] = 'ajax_add_to_cart';
-        parent::__construct($product);
+		parent::__construct( $product );
 	}
 
 	/**
@@ -45,11 +45,11 @@ class ProductType extends \WC_Product {
 	 * @return int
 	 */
 	public function get_selection_limit() {
-        $limit = $this->get_meta('_composable_selection_limit', true);
+		$limit = $this->get_meta( '_composable_selection_limit', true );
-        if (empty($limit)) {
+		if ( empty( $limit ) ) {
-            $limit = get_option('wc_composable_default_limit', 5);
+			$limit = get_option( 'wc_composable_default_limit', 5 );
 		}
-        return absint($limit);
+		return absint( $limit );
 	}
 
 	/**
@@ -58,9 +58,9 @@ class ProductType extends \WC_Product {
 	 * @return string 'fixed' or 'sum'
 	 */
 	public function get_pricing_mode() {
-        $mode = $this->get_meta('_composable_pricing_mode', true);
+		$mode = $this->get_meta( '_composable_pricing_mode', true );
-        if (empty($mode)) {
+		if ( empty( $mode ) ) {
-            $mode = get_option('wc_composable_default_pricing', 'sum');
+			$mode = get_option( 'wc_composable_default_pricing', 'sum' );
 		}
 		return $mode;
 	}
@@ -71,12 +71,17 @@ class ProductType extends \WC_Product {
 	 * @return array
 	 */
 	public function get_selection_criteria() {
-        return [
+		$type       = $this->get_meta( '_composable_criteria_type', true );
-            'type' => $this->get_meta('_composable_criteria_type', true) ?: 'category',
+		$categories = $this->get_meta( '_composable_categories', true );
-            'categories' => $this->get_meta('_composable_categories', true) ?: [],
+		$tags       = $this->get_meta( '_composable_tags', true );
-            'tags' => $this->get_meta('_composable_tags', true) ?: [],
+		$skus       = $this->get_meta( '_composable_skus', true );
-            'skus' => $this->get_meta('_composable_skus', true) ?: '',
+
-        ];
+		return array(
+			'type'       => $type ? $type : 'category',
+			'categories' => $categories ? $categories : array(),
+			'tags'       => $tags ? $tags : array(),
+			'skus'       => $skus ? $skus : '',
+		);
 	}
 
 	/**
@@ -103,14 +108,14 @@ class ProductType extends \WC_Product {
 	 * @return bool
 	 */
 	public function should_include_unpublished() {
-        $per_product = $this->get_meta('_composable_include_unpublished', true);
+		$per_product = $this->get_meta( '_composable_include_unpublished', true );
-        if ($per_product === 'yes') {
+		if ( 'yes' === $per_product ) {
 			return true;
 		}
-        if ($per_product === 'no') {
+		if ( 'no' === $per_product ) {
 			return false;
 		}
-        return get_option('wc_composable_include_unpublished', 'no') === 'yes';
+		return 'yes' === get_option( 'wc_composable_include_unpublished', 'no' );
 	}
 
 	/**
@@ -121,84 +126,84 @@ class ProductType extends \WC_Product {
 	public function get_available_products() {
 		$criteria            = $this->get_selection_criteria();
 		$include_unpublished = $this->should_include_unpublished();
-        $args = [
+		$args                = array(
 			'post_type'      => 'product',
 			'posts_per_page' => -1,
-            'post_status' => $include_unpublished ? ['publish', 'draft', 'private'] : 'publish',
+			'post_status'    => $include_unpublished ? array( 'publish', 'draft', 'private' ) : 'publish',
 			'orderby'        => 'title',
 			'order'          => 'ASC',
-        ];
+		);
 
 		// Exclude composable products using the product_type taxonomy
 		// (WooCommerce stores product types as taxonomy terms, NOT as postmeta)
-        $args['tax_query'] = [
+		$args['tax_query'] = array(
 			'relation' => 'AND',
-            [
+			array(
 				'taxonomy' => 'product_type',
 				'field'    => 'slug',
-                'terms' => ['composable'],
+				'terms'    => array( 'composable' ),
 				'operator' => 'NOT IN',
-            ],
+			),
-        ];
+		);
 
-        switch ($criteria['type']) {
+		switch ( $criteria['type'] ) {
 			case 'category':
-                if (!empty($criteria['categories'])) {
+				if ( ! empty( $criteria['categories'] ) ) {
-                    $args['tax_query'][] = [
+					$args['tax_query'][] = array(
 						'taxonomy' => 'product_cat',
 						'field'    => 'term_id',
 						'terms'    => $criteria['categories'],
 						'operator' => 'IN',
-                    ];
+					);
 				}
 				break;
 
 			case 'tag':
-                if (!empty($criteria['tags'])) {
+				if ( ! empty( $criteria['tags'] ) ) {
-                    $args['tax_query'][] = [
+					$args['tax_query'][] = array(
 						'taxonomy' => 'product_tag',
 						'field'    => 'term_id',
 						'terms'    => $criteria['tags'],
 						'operator' => 'IN',
-                    ];
+					);
 				}
 				break;
 
 			case 'sku':
-                if (!empty($criteria['skus'])) {
+				if ( ! empty( $criteria['skus'] ) ) {
-                    $skus = array_map('trim', explode(',', $criteria['skus']));
+					$skus               = array_map( 'trim', explode( ',', $criteria['skus'] ) );
-                    $args['meta_query'] = [
+					$args['meta_query'] = array(
-                        [
+						array(
 							'key'     => '_sku',
 							'value'   => $skus,
 							'compare' => 'IN',
-                        ],
+						),
-                    ];
+					);
 				}
 				break;
 		}
 
-        $query = new \WP_Query($args);
+		$query    = new \WP_Query( $args );
-        $products = [];
+		$products = array();
 
-        if ($query->have_posts()) {
+		if ( $query->have_posts() ) {
-            foreach ($query->posts as $post) {
+			foreach ( $query->posts as $post ) {
-                $product = wc_get_product($post->ID);
+				$product = wc_get_product( $post->ID );
 
-                if (!$product) {
+				if ( ! $product ) {
 					continue;
 				}
 
 				// Handle variable products by including their variations
-                if ($product->is_type('variable')) {
+				if ( $product->is_type( 'variable' ) ) {
 					$variation_ids = $product->get_children();
-                    foreach ($variation_ids as $variation_id) {
+					foreach ( $variation_ids as $variation_id ) {
-                        $variation = wc_get_product($variation_id);
+						$variation = wc_get_product( $variation_id );
-                        if ($variation && ($include_unpublished || $variation->is_purchasable())) {
+						if ( $variation && ( $include_unpublished || $variation->is_purchasable() ) ) {
 							$products[] = $variation;
 						}
 					}
-                } elseif ($include_unpublished || $product->is_purchasable()) {
+				} elseif ( $include_unpublished || $product->is_purchasable() ) {
 					$products[] = $product;
 				}
 			}
@@ -215,18 +220,18 @@ class ProductType extends \WC_Product {
 	 * @param array $selected_products Array of product IDs
 	 * @return float
 	 */
-    public function calculate_composed_price($selected_products) {
+	public function calculate_composed_price( $selected_products ) {
 		$pricing_mode = $this->get_pricing_mode();
 
-        if ($pricing_mode === 'fixed') {
+		if ( 'fixed' === $pricing_mode ) {
-            return floatval($this->get_regular_price());
+			return floatval( $this->get_regular_price() );
 		}
 
 		$total = 0;
-        foreach ($selected_products as $product_id) {
+		foreach ( $selected_products as $product_id ) {
-            $product = wc_get_product($product_id);
+			$product = wc_get_product( $product_id );
-            if ($product) {
+			if ( $product ) {
-                $total += floatval($product->get_price());
+				$total += floatval( $product->get_price() );
 			}
 		}
 
@@ -243,7 +248,7 @@ class ProductType extends \WC_Product {
 	 * @param array $cart_item_data Cart item data
 	 * @return bool
 	 */
-    public function add_to_cart_validation($product_id, $quantity, $variation_id = 0, $variations = [], $cart_item_data = []) {
+	public function add_to_cart_validation( $product_id, $quantity, $variation_id = 0, $variations = array(), $cart_item_data = array() ) {
 		return true;
 	}
 }

includes/StockManager.php

@@ -7,7 +7,7 @@
 
 namespace Magdev\WcComposableProduct;
 
-defined('ABSPATH') || exit;
+defined( 'ABSPATH' ) || exit;
 
 /**
  * Stock Manager Class
@@ -20,15 +20,15 @@ class StockManager {
 	 */
 	public function __construct() {
 		// Hook into order completion to reduce stock
-		add_action('woocommerce_order_status_completed', [$this, 'reduce_stock_on_order_complete'], 10, 1);
+		add_action( 'woocommerce_order_status_completed', array( $this, 'reduce_stock_on_order_complete' ), 10, 1 );
-		add_action('woocommerce_order_status_processing', [$this, 'reduce_stock_on_order_complete'], 10, 1);
+		add_action( 'woocommerce_order_status_processing', array( $this, 'reduce_stock_on_order_complete' ), 10, 1 );
 
 		// Hook into order cancellation/refund to restore stock
-		add_action('woocommerce_order_status_cancelled', [$this, 'restore_stock_on_order_cancel'], 10, 1);
+		add_action( 'woocommerce_order_status_cancelled', array( $this, 'restore_stock_on_order_cancel' ), 10, 1 );
-		add_action('woocommerce_order_status_refunded', [$this, 'restore_stock_on_order_cancel'], 10, 1);
+		add_action( 'woocommerce_order_status_refunded', array( $this, 'restore_stock_on_order_cancel' ), 10, 1 );
 
 		// Prevent double stock reduction
-		add_filter('woocommerce_can_reduce_order_stock', [$this, 'prevent_composable_stock_reduction'], 10, 2);
+		add_filter( 'woocommerce_can_reduce_order_stock', array( $this, 'prevent_composable_stock_reduction' ), 10, 2 );
 	}
 
 	/**
@@ -38,42 +38,42 @@ class StockManager {
 	 * @param int $quantity Quantity of composable product being added
 	 * @return bool|string True if in stock, error message otherwise
 	 */
-	public function validate_stock_availability($selected_product_ids, $quantity = 1) {
+	public function validate_stock_availability( $selected_product_ids, $quantity = 1 ) {
-		foreach ($selected_product_ids as $product_id) {
+		foreach ( $selected_product_ids as $product_id ) {
-			$product = wc_get_product($product_id);
+			$product = wc_get_product( $product_id );
 
-			if (!$product) {
+			if ( ! $product ) {
 				continue;
 			}
 
 			// Skip stock check if stock management is disabled for this product
-			if (!$product->managing_stock()) {
+			if ( ! $product->managing_stock() ) {
 				continue;
 			}
 
 			$stock_quantity = $product->get_stock_quantity();
 
 			// Check if product is in stock
-			if (!$product->is_in_stock()) {
+			if ( ! $product->is_in_stock() ) {
 				return sprintf(
 					/* translators: %s: product name */
-					__('"%s" is out of stock and cannot be selected.', 'wc-composable-product'),
+					__( '"%s" is out of stock and cannot be selected.', 'wc-composable-product' ),
 					$product->get_name()
 				);
 			}
 
 			// Check if enough stock is available
-			if ($stock_quantity !== null && $stock_quantity < $quantity) {
+			if ( null !== $stock_quantity && $stock_quantity < $quantity ) {
 				return sprintf(
 					/* translators: 1: product name, 2: stock quantity */
-					__('Only %2$d of "%1$s" are available in stock.', 'wc-composable-product'),
+					__( 'Only %2$d of "%1$s" are available in stock.', 'wc-composable-product' ),
 					$product->get_name(),
 					$stock_quantity
 				);
 			}
 
 			// Check for backorders
-			if ($product->backorders_allowed()) {
+			if ( $product->backorders_allowed() ) {
 				continue;
 			}
 		}
@@ -88,29 +88,29 @@ class StockManager {
 	 * @param int $required_quantity Required quantity
 	 * @return array Stock information [in_stock, stock_quantity, backorders_allowed]
 	 */
-	public function get_product_stock_info($product_id, $required_quantity = 1) {
+	public function get_product_stock_info( $product_id, $required_quantity = 1 ) {
-		$product = wc_get_product($product_id);
+		$product = wc_get_product( $product_id );
 
-		if (!$product) {
+		if ( ! $product ) {
-			return [
+			return array(
 				'in_stock'           => false,
 				'stock_quantity'     => 0,
 				'backorders_allowed' => false,
 				'stock_status'       => 'outofstock',
-			];
+			);
 		}
 
 		$stock_quantity = $product->get_stock_quantity();
 		$managing_stock = $product->managing_stock();
 
-		return [
+		return array(
 			'in_stock'           => $product->is_in_stock(),
 			'stock_quantity'     => $stock_quantity,
 			'backorders_allowed' => $product->backorders_allowed(),
 			'stock_status'       => $product->get_stock_status(),
 			'managing_stock'     => $managing_stock,
-			'has_enough_stock' => !$managing_stock || $stock_quantity === null || $stock_quantity >= $required_quantity,
+			'has_enough_stock'   => ! $managing_stock || null === $stock_quantity || $stock_quantity >= $required_quantity,
-		];
+		);
 	}
 
 	/**
@@ -118,54 +118,54 @@ class StockManager {
 	 *
 	 * @param int $order_id Order ID
 	 */
-	public function reduce_stock_on_order_complete($order_id) {
+	public function reduce_stock_on_order_complete( $order_id ) {
-		$order = wc_get_order($order_id);
+		$order = wc_get_order( $order_id );
 
-		if (!$order) {
+		if ( ! $order ) {
 			return;
 		}
 
 		// Check if stock has already been reduced
-		if ($order->get_meta('_composable_stock_reduced', true)) {
+		if ( $order->get_meta( '_composable_stock_reduced', true ) ) {
 			return;
 		}
 
-		foreach ($order->get_items() as $item) {
+		foreach ( $order->get_items() as $item ) {
 			$product = $item->get_product();
 
-			if (!$product || $product->get_type() !== 'composable') {
+			if ( ! $product || $product->get_type() !== 'composable' ) {
 				continue;
 			}
 
 			// Get selected products from order item meta
-			$selected_products = $item->get_meta('_composable_products', true);
+			$selected_products = $item->get_meta( '_composable_products', true );
 
-			if (empty($selected_products) || !is_array($selected_products)) {
+			if ( empty( $selected_products ) || ! is_array( $selected_products ) ) {
 				continue;
 			}
 
 			$quantity = $item->get_quantity();
 
 			// Reduce stock for each selected product
-			foreach ($selected_products as $product_id) {
+			foreach ( $selected_products as $product_id ) {
-				$selected_product = wc_get_product($product_id);
+				$selected_product = wc_get_product( $product_id );
 
-				if (!$selected_product || !$selected_product->managing_stock()) {
+				if ( ! $selected_product || ! $selected_product->managing_stock() ) {
 					continue;
 				}
 
 				$stock_quantity = $selected_product->get_stock_quantity();
 
-				if ($stock_quantity !== null) {
+				if ( null !== $stock_quantity ) {
 					$new_stock = $stock_quantity - $quantity;
-					$selected_product->set_stock_quantity($new_stock);
+					$selected_product->set_stock_quantity( $new_stock );
 					$selected_product->save();
 
 					// Add order note
 					$order->add_order_note(
 						sprintf(
 							/* translators: 1: product name, 2: quantity, 3: remaining stock */
-							__('Stock reduced for "%1$s": -%2$d (remaining: %3$d)', 'wc-composable-product'),
+							__( 'Stock reduced for "%1$s": -%2$d (remaining: %3$d)', 'wc-composable-product' ),
 							$selected_product->get_name(),
 							$quantity,
 							$new_stock
@@ -176,7 +176,7 @@ class StockManager {
 		}
 
 		// Mark stock as reduced
-		$order->update_meta_data('_composable_stock_reduced', true);
+		$order->update_meta_data( '_composable_stock_reduced', true );
 		$order->save();
 	}
 
@@ -185,54 +185,54 @@ class StockManager {
 	 *
 	 * @param int $order_id Order ID
 	 */
-	public function restore_stock_on_order_cancel($order_id) {
+	public function restore_stock_on_order_cancel( $order_id ) {
-		$order = wc_get_order($order_id);
+		$order = wc_get_order( $order_id );
 
-		if (!$order) {
+		if ( ! $order ) {
 			return;
 		}
 
 		// Check if stock was reduced
-		if (!$order->get_meta('_composable_stock_reduced', true)) {
+		if ( ! $order->get_meta( '_composable_stock_reduced', true ) ) {
 			return;
 		}
 
-		foreach ($order->get_items() as $item) {
+		foreach ( $order->get_items() as $item ) {
 			$product = $item->get_product();
 
-			if (!$product || $product->get_type() !== 'composable') {
+			if ( ! $product || $product->get_type() !== 'composable' ) {
 				continue;
 			}
 
 			// Get selected products from order item meta
-			$selected_products = $item->get_meta('_composable_products', true);
+			$selected_products = $item->get_meta( '_composable_products', true );
 
-			if (empty($selected_products) || !is_array($selected_products)) {
+			if ( empty( $selected_products ) || ! is_array( $selected_products ) ) {
 				continue;
 			}
 
 			$quantity = $item->get_quantity();
 
 			// Restore stock for each selected product
-			foreach ($selected_products as $product_id) {
+			foreach ( $selected_products as $product_id ) {
-				$selected_product = wc_get_product($product_id);
+				$selected_product = wc_get_product( $product_id );
 
-				if (!$selected_product || !$selected_product->managing_stock()) {
+				if ( ! $selected_product || ! $selected_product->managing_stock() ) {
 					continue;
 				}
 
 				$stock_quantity = $selected_product->get_stock_quantity();
 
-				if ($stock_quantity !== null) {
+				if ( null !== $stock_quantity ) {
 					$new_stock = $stock_quantity + $quantity;
-					$selected_product->set_stock_quantity($new_stock);
+					$selected_product->set_stock_quantity( $new_stock );
 					$selected_product->save();
 
 					// Add order note
 					$order->add_order_note(
 						sprintf(
 							/* translators: 1: product name, 2: quantity, 3: new stock */
-							__('Stock restored for "%1$s": +%2$d (total: %3$d)', 'wc-composable-product'),
+							__( 'Stock restored for "%1$s": +%2$d (total: %3$d)', 'wc-composable-product' ),
 							$selected_product->get_name(),
 							$quantity,
 							$new_stock
@@ -243,7 +243,7 @@ class StockManager {
 		}
 
 		// Mark stock as restored
-		$order->update_meta_data('_composable_stock_reduced', false);
+		$order->update_meta_data( '_composable_stock_reduced', false );
 		$order->save();
 	}
 
@@ -255,11 +255,11 @@ class StockManager {
 	 * @param \WC_Order $order Order object
 	 * @return bool
 	 */
-	public function prevent_composable_stock_reduction($reduce_stock, $order) {
+	public function prevent_composable_stock_reduction( $reduce_stock, $order ) {
-		foreach ($order->get_items() as $item) {
+		foreach ( $order->get_items() as $item ) {
 			$product = $item->get_product();
 
-			if ($product && $product->get_type() === 'composable') {
+			if ( $product && $product->get_type() === 'composable' ) {
 				// We'll handle stock reduction manually
 				return false;
 			}
@@ -275,9 +275,9 @@ class StockManager {
 	 * @param string $cart_item_key Cart item key
 	 * @param array $values Cart item values
 	 */
-	public function store_selected_products_in_order($item, $cart_item_key, $values) {
+	public function store_selected_products_in_order( $item, $cart_item_key, $values ) {
-		if (isset($values['composable_products']) && !empty($values['composable_products'])) {
+		if ( isset( $values['composable_products'] ) && ! empty( $values['composable_products'] ) ) {
-			$item->add_meta_data('_composable_products', $values['composable_products'], true);
+			$item->add_meta_data( '_composable_products', $values['composable_products'], true );
 		}
 	}
 }

phpcs.xml.dist

@@ -0,0 +1,34 @@
+<?xml version="1.0"?>
+<ruleset name="WC Composable Product">
+    <description>PHPCS rules for WooCommerce Composable Products plugin</description>
+
+    <!-- Scan plugin source -->
+    <file>includes</file>
+    <file>wc-composable-product.php</file>
+
+    <!-- Show progress and use colors -->
+    <arg value="ps"/>
+    <arg name="colors"/>
+
+    <!-- Use WordPress Extra standard (Core + Extra, without Docs) -->
+    <rule ref="WordPress-Extra">
+        <!-- Allow PSR-4 PascalCase file naming -->
+        <exclude name="WordPress.Files.FileName"/>
+    </rule>
+
+    <!-- Check PHP 8.3+ compatibility -->
+    <rule ref="PHPCompatibilityWP"/>
+    <config name="testVersion" value="8.3-"/>
+
+    <!-- WordPress minimum version -->
+    <config name="minimum_wp_version" value="6.0"/>
+
+    <!-- Enforce text domain -->
+    <rule ref="WordPress.WP.I18n">
+        <properties>
+            <property name="text_domain" type="array">
+                <element value="wc-composable-product"/>
+            </property>
+        </properties>
+    </rule>
+</ruleset>

phpunit.xml.dist

@@ -1,14 +1,11 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <phpunit
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-    xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.6/phpunit.xsd"
+    xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.0/phpunit.xsd"
     bootstrap="tests/bootstrap.php"
     colors="true"
-    verbose="true"
-    beStrictAboutTestsThatDoNotTestAnything="true"
-    beStrictAboutOutputDuringTests="true"
-    failOnRisky="false"
     failOnWarning="true"
+    cacheDirectory=".phpunit.cache"
 >
     <testsuites>
         <testsuite name="Unit">
@@ -16,9 +13,9 @@
         </testsuite>
     </testsuites>
 
-    <coverage processUncoveredFiles="true">
+    <source>
         <include>
             <directory suffix=".php">includes</directory>
         </include>
-    </coverage>
+    </source>
 </phpunit>

wc-composable-product.php

@@ -17,17 +17,17 @@
  * WC tested up to: 10.0
  */
 
-defined('ABSPATH') || exit;
+defined( 'ABSPATH' ) || exit;
 
 // Define plugin constants
-define('WC_COMPOSABLE_PRODUCT_VERSION', '1.3.1');
+define( 'WC_COMPOSABLE_PRODUCT_VERSION', '1.3.1' );
-define('WC_COMPOSABLE_PRODUCT_FILE', __FILE__);
+define( 'WC_COMPOSABLE_PRODUCT_FILE', __FILE__ );
-define('WC_COMPOSABLE_PRODUCT_PATH', plugin_dir_path(__FILE__));
+define( 'WC_COMPOSABLE_PRODUCT_PATH', plugin_dir_path( __FILE__ ) );
-define('WC_COMPOSABLE_PRODUCT_URL', plugin_dir_url(__FILE__));
+define( 'WC_COMPOSABLE_PRODUCT_URL', plugin_dir_url( __FILE__ ) );
-define('WC_COMPOSABLE_PRODUCT_BASENAME', plugin_basename(__FILE__));
+define( 'WC_COMPOSABLE_PRODUCT_BASENAME', plugin_basename( __FILE__ ) );
 
 // Load Composer autoloader
-if (file_exists(WC_COMPOSABLE_PRODUCT_PATH . 'vendor/autoload.php')) {
+if ( file_exists( WC_COMPOSABLE_PRODUCT_PATH . 'vendor/autoload.php' ) ) {
 	require_once WC_COMPOSABLE_PRODUCT_PATH . 'vendor/autoload.php';
 }
 
@@ -35,14 +35,17 @@ if (file_exists(WC_COMPOSABLE_PRODUCT_PATH . 'vendor/autoload.php')) {
  * Check if WooCommerce is active
  */
 function wc_composable_product_check_woocommerce() {
-    if (!class_exists('WooCommerce')) {
+	if ( ! class_exists( 'WooCommerce' ) ) {
-        add_action('admin_notices', function() {
+		add_action(
+			'admin_notices',
+			function () {
 				?>
 			<div class="notice notice-error">
-                <p><?php esc_html_e('WooCommerce Composable Products requires WooCommerce to be installed and active.', 'wc-composable-product'); ?></p>
+				<p><?php esc_html_e( 'WooCommerce Composable Products requires WooCommerce to be installed and active.', 'wc-composable-product' ); ?></p>
 			</div>
 				<?php
-        });
+			}
+		);
 		return false;
 	}
 	return true;
@@ -52,39 +55,42 @@ function wc_composable_product_check_woocommerce() {
  * Initialize the plugin
  */
 function wc_composable_product_init() {
-    if (!wc_composable_product_check_woocommerce()) {
+	if ( ! wc_composable_product_check_woocommerce() ) {
 		return;
 	}
 
 	// Load text domain
-    load_plugin_textdomain('wc-composable-product', false, dirname(WC_COMPOSABLE_PRODUCT_BASENAME) . '/languages');
+	load_plugin_textdomain( 'wc-composable-product', false, dirname( WC_COMPOSABLE_PRODUCT_BASENAME ) . '/languages' );
 
 	// Initialize main plugin class
 	Magdev\WcComposableProduct\Plugin::instance();
 }
 // Use woocommerce_init to ensure all WooCommerce classes including settings are loaded
-add_action('woocommerce_init', 'wc_composable_product_init');
+add_action( 'woocommerce_init', 'wc_composable_product_init' );
 
 /**
  * Declare HPOS compatibility
  */
-add_action('before_woocommerce_init', function() {
+add_action(
-    if (class_exists(\Automattic\WooCommerce\Utilities\FeaturesUtil::class)) {
+	'before_woocommerce_init',
-        \Automattic\WooCommerce\Utilities\FeaturesUtil::declare_compatibility('custom_order_tables', __FILE__, true);
+	function () {
+		if ( class_exists( \Automattic\WooCommerce\Utilities\FeaturesUtil::class ) ) {
+			\Automattic\WooCommerce\Utilities\FeaturesUtil::declare_compatibility( 'custom_order_tables', __FILE__, true );
 		}
-});
+	}
+);
 
 /**
  * Activation hook
  */
 function wc_composable_product_activate() {
-    if (!class_exists('WooCommerce')) {
+	if ( ! class_exists( 'WooCommerce' ) ) {
-        deactivate_plugins(WC_COMPOSABLE_PRODUCT_BASENAME);
+		deactivate_plugins( WC_COMPOSABLE_PRODUCT_BASENAME );
 		wp_die(
-            esc_html__('This plugin requires WooCommerce to be installed and active.', 'wc-composable-product'),
+			esc_html__( 'This plugin requires WooCommerce to be installed and active.', 'wc-composable-product' ),
-            esc_html__('Plugin Activation Error', 'wc-composable-product'),
+			esc_html__( 'Plugin Activation Error', 'wc-composable-product' ),
-            array('back_link' => true)
+			array( 'back_link' => true )
 		);
 	}
 }
-register_activation_hook(__FILE__, 'wc_composable_product_activate');
+register_activation_hook( __FILE__, 'wc_composable_product_activate' );