rebase from live enviornment

wp/plugins/imagify/classes/Imagifybeat/Core.php

@@ -0,0 +1,172 @@
+<?php
+namespace Imagify\Imagifybeat;
+
+defined( 'ABSPATH' ) || die( 'Cheatin’ uh?' );
+
+/**
+ * Imagifybeat core.
+ *
+ * @since  1.9.3
+ * @author Grégory Viguier
+ */
+class Core {
+	use \Imagify\Traits\InstanceGetterTrait;
+
+	/**
+	 * Class init: launch hooks.
+	 *
+	 * @since  1.9.3
+	 * @access public
+	 * @author Grégory Viguier
+	 */
+	public function init() {
+		add_action( 'wp_ajax_imagifybeat',        [ $this, 'core_handler' ], 1 );
+		add_filter( 'imagifybeat_refresh_nonces', [ $this, 'refresh_imagifybeat_nonces' ] );
+	}
+
+	/**
+	 * Ajax handler for the Imagifybeat API.
+	 *
+	 * Runs when the user is logged in.
+	 *
+	 * @since  1.9.3
+	 * @access public
+	 * @author Grégory Viguier
+	 */
+	public function core_handler() {
+		if ( empty( $_POST['_nonce'] ) ) {
+			wp_send_json_error();
+		}
+
+		$data        = [];
+		$response    = [];
+		$nonce_state = wp_verify_nonce( wp_unslash( $_POST['_nonce'] ), 'imagifybeat-nonce' );
+
+		// Screen_id is the same as $current_screen->id and the JS global 'pagenow'.
+		if ( ! empty( $_POST['screen_id'] ) ) {
+			$screen_id = sanitize_key( $_POST['screen_id'] );
+		} else {
+			$screen_id = 'front';
+		}
+
+		if ( ! empty( $_POST['data'] ) ) {
+			$data = wp_unslash( (array) $_POST['data'] );
+		}
+
+		if ( 1 !== $nonce_state ) {
+			/**
+			 * Filters the nonces to send.
+			 *
+			 * @since  1.9.3
+			 * @author Grégory Viguier
+			 *
+			 * @param array  $response  The Imagifybeat response.
+			 * @param array  $data      The $_POST data sent.
+			 * @param string $screen_id The screen id.
+			 */
+			$response = apply_filters( 'imagifybeat_refresh_nonces', $response, $data, $screen_id );
+
+			if ( false === $nonce_state ) {
+				// User is logged in but nonces have expired.
+				$response['nonces_expired'] = true;
+				wp_send_json( $response );
+			}
+		}
+
+		if ( ! empty( $data ) ) {
+			/**
+			 * Filters the Imagifybeat response received.
+			 *
+			 * @since  1.9.3
+			 * @author Grégory Viguier
+			 *
+			 * @param array  $response  The Imagifybeat response.
+			 * @param array  $data      The $_POST data sent.
+			 * @param string $screen_id The screen id.
+			 */
+			$response = apply_filters( 'imagifybeat_received', $response, $data, $screen_id );
+		}
+
+		/**
+		 * Filters the Imagifybeat response sent.
+		 *
+		 * @since  1.9.3
+		 * @author Grégory Viguier
+		 *
+		 * @param array  $response  The Imagifybeat response.
+		 * @param string $screen_id The screen id.
+		 */
+		$response = apply_filters( 'imagifybeat_send', $response, $screen_id );
+
+		/**
+		 * Fires when Imagifybeat ticks in logged-in environments.
+		 *
+		 * Allows the transport to be easily replaced with long-polling.
+		 *
+		 * @since  1.9.3
+		 * @author Grégory Viguier
+		 *
+		 * @param array  $response  The Imagifybeat response.
+		 * @param string $screen_id The screen id.
+		 */
+		do_action( 'imagifybeat_tick', $response, $screen_id );
+
+		// Send the current time according to the server.
+		$response['server_time'] = time();
+
+		wp_send_json( $response );
+	}
+
+	/**
+	 * Add the latest Imagifybeat nonce to the Imagifybeat response.
+	 *
+	 * @since  1.9.3
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @param  array $response  The Imagifybeat response.
+	 * @return array            The Imagifybeat response.
+	 */
+	public function refresh_imagifybeat_nonces( $response ) {
+		// Refresh the Imagifybeat nonce.
+		$response['imagifybeat_nonce'] = wp_create_nonce( 'imagifybeat-nonce' );
+		return $response;
+	}
+
+	/**
+	 * Get Imagifybeat settings.
+	 *
+	 * @since  1.9.3
+	 * @access public
+	 * @author Grégory Viguier
+	 *
+	 * @return array
+	 */
+	public function get_settings() {
+		global $pagenow;
+
+		$settings = [];
+
+		if ( ! is_admin() ) {
+			$settings['ajaxurl'] = admin_url( 'admin-ajax.php', 'relative' );
+		}
+
+		if ( is_user_logged_in() ) {
+			$settings['nonce'] = wp_create_nonce( 'imagifybeat-nonce' );
+		}
+
+		if ( 'customize.php' === $pagenow ) {
+			$settings['screenId'] = 'customize';
+		}
+
+		/**
+		 * Filters the Imagifybeat settings.
+		 *
+		 * @since  1.9.3
+		 * @author Grégory Viguier
+		 *
+		 * @param array $settings Imagifybeat settings array.
+		 */
+		return (array) apply_filters( 'imagifybeat_settings', $settings );
+	}
+}