Added autoloader to reduce complexity; fix phpcs issues

.dev-lib

@@ -1 +1,2 @@
-SYNC_README_MD=0
+SYNC_README_MD=0
+PATH_EXCLUDES_PATTERN=includes/lib/*

amp.php

@@ -17,16 +17,12 @@
 define( 'AMP__DIR__', dirname( __FILE__ ) );
 define( 'AMP__VERSION', '0.6.0-alpha' );
 
+require_once AMP__DIR__ . '/includes/class-amp-autoloader.php';
+AMP_Autoloader::register();
+
 require_once AMP__DIR__ . '/back-compat/back-compat.php';
 require_once AMP__DIR__ . '/includes/amp-helper-functions.php';
-require_once AMP__DIR__ . '/includes/class-amp-post-type-support.php';
 require_once AMP__DIR__ . '/includes/admin/functions.php';
-require_once AMP__DIR__ . '/includes/admin/class-amp-customizer.php';
-require_once AMP__DIR__ . '/includes/admin/class-amp-post-meta-box.php';
-require_once AMP__DIR__ . '/includes/settings/class-amp-customizer-settings.php';
-require_once AMP__DIR__ . '/includes/settings/class-amp-customizer-design-settings.php';
-require_once AMP__DIR__ . '/includes/actions/class-amp-frontend-actions.php';
-require_once AMP__DIR__ . '/includes/actions/class-amp-paired-post-actions.php';
 
 register_activation_hook( __FILE__, 'amp_activate' );
 function amp_activate() {
@@ -150,7 +146,7 @@ function amp_maybe_add_actions() {
 }
 
 function amp_load_classes() {
-	require_once( AMP__DIR__ . '/includes/class-amp-post-template.php' ); // this loads everything else
+	_deprecated_function( __FUNCTION__, '0.6.0' );
 }
 
 function amp_add_frontend_actions() {
@@ -196,8 +192,6 @@ function amp_render_post( $post ) {
 	}
 	$post_id = $post->ID;
 
-	amp_load_classes();
-
 	/**
 	 * Fires before rendering a post in AMP.
 	 *
@@ -246,9 +240,3 @@ function amp_redirect_old_slug_to_new_url( $link ) {
 
 	return $link;
 }
-
-// Unconditionally load code required when running unit tests.
-if ( function_exists( 'tests_add_filter' ) ) {
-	amp_load_classes();
-	require_once dirname( __FILE__ ) . '/tests/stubs.php';
-}

composer.json

@@ -0,0 +1,7 @@
+{
+    "name": "automattic/amp-wp",
+    "description": "WordPress plugin for adding AMP support.",
+    "homepage": "https://github.com/Automattic/amp-wp",
+    "type": "wordpress-plugin",
+    "license": "GPL-2.0"
+}

includes/actions/class-amp-frontend-actions.php

@@ -1,14 +1,27 @@
 <?php
-// Callbacks for adding AMP-related things to the main theme
-
-require_once( AMP__DIR__ . '/includes/actions/class-amp-actions.php' );
+/**
+ * Class AMP_Frontend_Actions
+ *
+ * @package AMP
+ */
 
+/**
+ * Class AMP_Frontend_Actions
+ *
+ * Callbacks for adding AMP-related things to the main theme
+ */
 class AMP_Frontend_Actions {
-
+
+	/**
+	 * Register hooks.
+	 */
 	public static function register_hooks() {
 		add_action( 'wp_head', 'AMP_Frontend_Actions::add_canonical' );
 	}
-
+
+	/**
+	 * Add canonical link.
+	 */
 	public static function add_canonical() {
 		if ( false === apply_filters( 'add_canonical_link', true ) ) {
 			return;

includes/actions/class-amp-paired-post-actions.php

@@ -1,9 +1,18 @@
 <?php
+/**
+ * Class AMP_Paired_Post_Actions
+ *
+ * @package AMP
+ */
 
-require_once( AMP__DIR__ . '/includes/actions/class-amp-actions.php' );
-
+/**
+ * Class AMP_Paired_Post_Actions
+ */
 class AMP_Paired_Post_Actions extends AMP_Actions {
-
+
+	/**
+	 * Register hooks.
+	 */
 	public static function register_hooks() {
 		add_action( 'amp_post_template_head', 'AMP_Paired_Post_Actions::add_generator_metadata' );
 		add_action( 'amp_post_template_head', 'AMP_Paired_Post_Actions::add_title' );
@@ -16,42 +25,75 @@ public static function register_hooks() {
 		add_action( 'amp_post_template_data', 'AMP_Paired_Post_Actions::add_analytics_scripts' );
 		add_action( 'amp_post_template_footer', 'AMP_Paired_Post_Actions::add_analytics_data' );
 	}
-
+
+	/**
+	 * Add title.
+	 *
+	 * @param AMP_Post_Template $amp_template template.
+	 */
 	public static function add_title( $amp_template ) {
 		?>
 		<title><?php echo esc_html( $amp_template->get( 'document_title' ) ); ?></title>
 		<?php
 	}
 
+	/**
+	 * Add canonical link.
+	 *
+	 * @param AMP_Post_Template $amp_template Template.
+	 */
 	public static function add_canonical_link( $amp_template ) {
 		?>
 		<link rel="canonical" href="<?php echo esc_url( $amp_template->get( 'canonical_url' ) ); ?>" />
 		<?php
 	}
 
+	/**
+	 * Print scripts.
+	 *
+	 * @param AMP_Post_Template $amp_template Template.
+	 */
 	public static function add_scripts( $amp_template ) {
 		$scripts = $amp_template->get( 'amp_component_scripts', array() );
 		foreach ( $scripts as $element => $script ) :
-			$custom_type = ($element == 'amp-mustache') ? 'template' : 'element'; ?>
+			$custom_type = ( 'amp-mustache' === $element ) ? 'template' : 'element';
+			?>
 			<script custom-<?php echo esc_attr( $custom_type ); ?>="<?php echo esc_attr( $element ); ?>" src="<?php echo esc_url( $script ); ?>" async></script>
 		<?php endforeach; ?>
 		<script src="<?php echo esc_url( $amp_template->get( 'amp_runtime_script' ) ); ?>" async></script>
 		<?php
 	}
 
+	/**
+	 * Print fonts.
+	 *
+	 * @param AMP_Post_Template $amp_template Template.
+	 */
 	public static function add_fonts( $amp_template ) {
 		$font_urls = $amp_template->get( 'font_urls', array() );
-		foreach ( $font_urls as $slug => $url ) : ?>
+		?>
+		<?php foreach ( $font_urls as $slug => $url ) : ?>
 			<link rel="stylesheet" href="<?php echo esc_url( $url ); ?>">
-		<?php endforeach;
+		<?php endforeach; ?>
+		<?php
 	}
 
+	/**
+	 * Print boilerplate CSS.
+	 *
+	 * @param AMP_Post_Template $amp_template Template.
+	 */
 	public static function add_boilerplate_css( $amp_template ) {
 		?>
 		<style amp-boilerplate>body{-webkit-animation:-amp-start 8s steps(1,end) 0s 1 normal both;-moz-animation:-amp-start 8s steps(1,end) 0s 1 normal both;-ms-animation:-amp-start 8s steps(1,end) 0s 1 normal both;animation:-amp-start 8s steps(1,end) 0s 1 normal both}@-webkit-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-moz-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-ms-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-o-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}</style><noscript><style amp-boilerplate>body{-webkit-animation:none;-moz-animation:none;-ms-animation:none;animation:none}</style></noscript>
 		<?php
 	}
 
+	/**
+	 * Print Schema.org metadata.
+	 *
+	 * @param AMP_Post_Template $amp_template Template.
+	 */
 	public static function add_schemaorg_metadata( $amp_template ) {
 		$metadata = $amp_template->get( 'metadata' );
 		if ( empty( $metadata ) ) {
@@ -62,54 +104,70 @@ public static function add_schemaorg_metadata( $amp_template ) {
 		<?php
 	}
 
+	/**
+	 * Print styles.
+	 *
+	 * @param AMP_Post_Template $amp_template Template.
+	 */
 	public static function add_styles( $amp_template ) {
 		$styles = $amp_template->get( 'post_amp_styles' );
 		if ( ! empty( $styles ) ) {
-			echo '/* Inline styles */' . PHP_EOL;
+			echo '/* Inline styles */' . PHP_EOL; // WPCS: XSS OK.
 			foreach ( $styles as $selector => $declarations ) {
 				$declarations = implode( ';', $declarations ) . ';';
-				printf( '%1$s{%2$s}', $selector, $declarations );
+				printf( '%1$s{%2$s}', $selector, $declarations ); // WPCS: XSS OK.
 			}
 		}
 	}
-
+
+	/**
+	 * Add analytics scripts.
+	 *
+	 * @param array $data Data.
+	 * @return array Data.
+	 */
 	public static function add_analytics_scripts( $data ) {
 		if ( ! empty( $data['amp_analytics'] ) ) {
 			$data['amp_component_scripts']['amp-analytics'] = 'https://cdn.ampproject.org/v0/amp-analytics-0.1.js';
 		}
 		return $data;
 	}
-
-	public static  function add_analytics_data( $amp_template ) {
+
+	/**
+	 * Print analytics data.
+	 *
+	 * @param AMP_Post_Template $amp_template Template.
+	 */
+	public static function add_analytics_data( $amp_template ) {
 		$analytics_entries = $amp_template->get( 'amp_analytics' );
 		if ( empty( $analytics_entries ) ) {
 			return;
 		}
-		
+
 		foreach ( $analytics_entries as $id => $analytics_entry ) {
 			if ( ! isset( $analytics_entry['type'], $analytics_entry['attributes'], $analytics_entry['config_data'] ) ) {
 				/* translators: %1$s is analytics entry ID, %2$s is actual entry keys. */
 				_doing_it_wrong( __FUNCTION__, sprintf( esc_html__( 'Analytics entry for %1$s is missing one of the following keys: `type`, `attributes`, or `config_data` (array keys: %2$s)', 'amp' ), esc_html( $id ), esc_html( implode( ', ', array_keys( $analytics_entry ) ) ) ), '0.3.2' );
 				continue;
 			}
-			
+
 			$script_element = AMP_HTML_Utils::build_tag( 'script', array(
 				'type' => 'application/json',
 			), wp_json_encode( $analytics_entry['config_data'] ) );
-			
+
 			$amp_analytics_attr = array_merge( array(
 				'id' => $id,
 				'type' => $analytics_entry['type'],
 			), $analytics_entry['attributes'] );
-			
-			echo AMP_HTML_Utils::build_tag( 'amp-analytics', $amp_analytics_attr, $script_element );
+
+			echo AMP_HTML_Utils::build_tag( 'amp-analytics', $amp_analytics_attr, $script_element ); // WPCS: XSS OK.
 		}
 	}
 
 	/**
-	 * Add AMP generator metadata.
+	 * Print AMP generator metadata.
 	 *
-	 * @param object $amp_template AMP_Post_Template object.
+	 * @param AMP_Post_Template $amp_template AMP_Post_Template object.
 	 * @since 0.6
 	 */
 	public static function add_generator_metadata( $amp_template ) {

includes/admin/functions.php

@@ -1,9 +1,6 @@
 <?php
 // Callbacks for adding AMP-related things to the admin.
 
-require_once AMP__DIR__ . '/includes/options/class-amp-options-menu.php';
-require_once AMP__DIR__ . '/includes/options/views/class-amp-options-manager.php';
-
 define( 'AMP_CUSTOMIZER_QUERY_VAR', 'customize_amp' );
 
 /**
@@ -31,6 +28,11 @@ function amp_maybe_init_customizer() {
 	add_action( 'admin_menu', 'amp_add_customizer_link' );
 }
 
+/**
+ * Get permalink for the first AMP-eligible post.
+ *
+ * @return string|null
+ */
 function amp_admin_get_preview_permalink() {
 	/**
 	 * Filter the post type to retrieve the latest for use in the AMP template customizer.
@@ -40,7 +42,7 @@ function amp_admin_get_preview_permalink() {
 	$post_type = (string) apply_filters( 'amp_customizer_post_type', 'post' );
 
 	if ( ! post_type_supports( $post_type, 'amp' ) ) {
-		return;
+		return null;
 	}
 
 	$post_ids = get_posts( array(

includes/amp-helper-functions.php

@@ -1,11 +1,17 @@
 <?php
+/**
+ * AMP Helper Functions
+ *
+ * @package AMP
+ */
 
 /**
- * Get AMP permalink.
+ * Retrieves the full AMP-specific permalink for the given post ID.
  *
  * @since 0.1
  *
  * @param int $post_id Post ID.
+ *
  * @return string AMP permalink.
  */
 function amp_get_permalink( $post_id ) {
@@ -27,7 +33,7 @@ function amp_get_permalink( $post_id ) {
 	}
 
 	$parsed_url = wp_parse_url( get_permalink( $post_id ) );
-	$structure = get_option( 'permalink_structure' );
+	$structure  = get_option( 'permalink_structure' );
 	if ( empty( $structure ) || ! empty( $parsed_url['query'] ) || is_post_type_hierarchical( get_post_type( $post_id ) ) ) {
 		$amp_url = add_query_arg( AMP_QUERY_VAR, '', get_permalink( $post_id ) );
 	} else {
@@ -64,6 +70,8 @@ function post_supports_amp( $post ) {
  * Are we currently on an AMP URL?
  *
  * Note: will always return `false` if called before the `parse_query` hook.
+ *
+ * @return bool Whether it is the AMP endpoint.
  */
 function is_amp_endpoint() {
 	if ( 0 === did_action( 'parse_query' ) ) {
@@ -73,6 +81,12 @@ function is_amp_endpoint() {
 	return false !== get_query_var( AMP_QUERY_VAR, false );
 }
 
+/**
+ * Get AMP asset URL.
+ *
+ * @param string $file Relative path to file in assets directory.
+ * @return string URL.
+ */
 function amp_get_asset_url( $file ) {
 	return plugins_url( sprintf( 'assets/%s', $file ), AMP__FILE__ );
 }