Add utilities folder & master update class

Create a master version file of the self update class for managing mass updates to the class

.utilities/class-wpsp-blocks-self-update.php

@@ -0,0 +1,101 @@
+<?php
+/**
+ * Plugin Autoupdate Filter Self Update class.
+ * sets up autoupdates for this GitHub-hosted plugin.
+ *
+ * @package wpsp
+ */
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit; // Exit if accessed directly.
+}
+
+class WPSP_Blocks_Self_Update {
+
+	public static $instance;
+
+	/**
+	 * Get instance of this class.
+	 *
+	 * @return WPSP_Blocks_Self_Update
+	 */
+	public static function get_instance() {
+		if ( ! self::$instance ) {
+			self::$instance = new self();
+		}
+
+		return self::$instance;
+	}
+
+	/**
+	 * Initialize WordPress hooks
+	 */
+	public function hooks() {
+		add_filter( 'update_plugins_opsoasis.mystagingwebsite.com', array( $this, 'self_update' ), 10, 3 );
+	}
+
+	/**
+	 * Check for updates to this plugin
+	 *
+	 * @param array  $update   Array of update data.
+	 * @param array  $plugin_data Array of plugin data.
+	 * @param string $plugin_file Path to plugin file.
+	 *
+	 * @return array|bool Array of update data or false if no update available.
+	 */
+	public function self_update( $update, array $plugin_data, string $plugin_file ) {
+		// Already completed update check elsewhere.
+		if ( ! empty( $update ) ) {
+			return $update;
+		}
+
+		// Check this is a plugin we actually manage.
+		$wpsp_blocks = array_map(
+			function( $block ) {
+				return "{$block}/{$block}.php";
+			},
+			apply_filters( 'wpsp_installed_blocks', array() )
+		);
+
+		if ( ! in_array( $plugin_file, $wpsp_blocks, true ) ) {
+			return $update;
+		}
+
+		$plugin_filename_parts = explode( '/', $plugin_file );
+
+		// Ask opsoasis.mystagingwebsite.com if there's an update.
+		$response = wp_remote_get(
+			'https://opsoasis.mystagingwebsite.com/wp-json/opsoasis-blocks-version-manager/v1/update-check',
+			array(
+				'body' => array(
+					'plugin'  => $plugin_filename_parts[0],
+					'version' => $plugin_data['Version'],
+				),
+			)
+		);
+
+		// Bail if this plugin wasn't found on opsoasis.mystagingwebsite.com.
+		if ( 404 === wp_remote_retrieve_response_code( $response ) || 202 === wp_remote_retrieve_response_code( $response ) ) {
+			return $update;
+		}
+
+		$updated_version = wp_remote_retrieve_body( $response );
+		$updated_array   = json_decode( $updated_version, true );
+
+		// Get the zip file.
+		$zip = wp_remote_get( $updated_array['package_url'] );
+
+		// If the zip file was found, return the update.
+		if ( 200 === wp_remote_retrieve_response_code( $zip ) ) {
+			return array(
+				'slug'    => $updated_array['slug'],
+				'version' => $updated_array['version'],
+				'url'     => $updated_array['package_url'],
+				'package' => wp_remote_retrieve_body( $zip ),
+			);
+		}
+
+		// If we're here, nothing was found on github.
+		return $update;
+	}
+}