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wp/wp-content/plugins/wordpress-seo/src/integrations/third-party/amp.php

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+<?php
+
+namespace Yoast\WP\SEO\Integrations\Third_Party;
+
+use Yoast\WP\SEO\Conditionals\Front_End_Conditional;
+use Yoast\WP\SEO\Integrations\Front_End_Integration;
+use Yoast\WP\SEO\Integrations\Integration_Interface;
+
+/**
+ * AMP integration.
+ */
+class AMP implements Integration_Interface {
+
+	/**
+	 * The front end integration.
+	 *
+	 * @var Front_End_Integration
+	 */
+	protected $front_end;
+
+	/**
+	 * Returns the conditionals based in which this loadable should be active.
+	 *
+	 * @return array
+	 */
+	public static function get_conditionals() {
+		return [ Front_End_Conditional::class ];
+	}
+
+	/**
+	 * Constructs the AMP integration
+	 *
+	 * @param Front_End_Integration $front_end The front end integration.
+	 */
+	public function __construct( Front_End_Integration $front_end ) {
+		$this->front_end = $front_end;
+	}
+
+	/**
+	 * Initializes the integration.
+	 *
+	 * This is the place to register hooks and filters.
+	 *
+	 * @return void
+	 */
+	public function register_hooks() {
+		\add_action( 'amp_post_template_head', [ $this, 'remove_amp_meta_output' ], 0 );
+		\add_action( 'amp_post_template_head', [ $this->front_end, 'call_wpseo_head' ], 9 );
+	}
+
+	/**
+	 * Removes amp meta output.
+	 *
+	 * @return void
+	 */
+	public function remove_amp_meta_output() {
+		\remove_action( 'amp_post_template_head', 'amp_post_template_add_title' );
+		\remove_action( 'amp_post_template_head', 'amp_post_template_add_canonical' );
+		\remove_action( 'amp_post_template_head', 'amp_print_schemaorg_metadata' );
+	}
+}