Avada-Disable-Builder-for-Non-Admins/updater.php

<?php
class Disable_non_admin_avada_updater {
    protected $file;
    protected $plugin;
    protected $basename;
    protected $active;
    private $username;
    private $repository;
    private $authorize_token;
    private $github_response;

    public function __construct( $file ) {
        $this->file = $file;
        add_action( 'admin_init', array( $this, 'set_plugin_properties' ) );
        return $this;
    }

    public function set_plugin_properties() {
        $this->plugin   = get_plugin_data( $this->file );
        $this->basename = plugin_basename( $this->file );
        $this->active   = is_plugin_active( $this->basename );
    }
    public function set_username( $username ) {
        $this->username = $username;
    }
    public function set_repository( $repository ) {
        $this->repository = $repository;
    }
    public function authorize( $token ) {
        $this->authorize_token = $token;
    }
    private function get_repository_info() {
        if ( is_null( $this->github_response ) ) { // Do we have a response?
          $request_uri = sprintf( 'https://api.github.com/repos/%s/%s/releases', $this->username, $this->repository ); // Build URI
          if( $this->authorize_token ) { // Is there an access token?
              $request_uri = add_query_arg( 'access_token', $this->authorize_to , $request_uri ); // Append it
          }        
          $response = json_decode( wp_remote_retrieve_body( wp_remote_get( $request_uri ) ), true ); // Get JSON and parse it
          if( is_array( $response ) ) { // If it is an array
              $response = current( $response ); // Get the first item
          }
          if( $this->authorize_token ) { // Is there an access token?
              $response['zipball_url'] = add_query_arg( 'access_token', $this->authorize_token, $response['zipball_url'] ); // Update our zip url with token
          }
          $this->github_response = $response; // Set it to our property  
        }
    }
    public function initialize() {
		/* Adding a filter to the transient. */
    add_filter( 'pre_set_site_transient_update_plugins', array( $this, 'modify_transient' ), 10, 1 );
		add_filter( 'plugins_api', array( $this, 'plugin_popup' ), 10, 3);
		add_filter( 'upgrader_post_install', array( $this, 'after_install' ), 10, 3 );
		// Add Authorization Token to download_package
		add_filter( 'upgrader_pre_download',
			function() {
				add_filter( 'http_request_args', [ $this, 'download_package' ], 15, 2 );
				return false; // upgrader_pre_download filter default return value.
			}
		);
	}
    public function modify_transient( $transient ) {
        if( property_exists( $transient, 'checked') ) { // Check if transient has a checked property
          if( $checked = $transient->checked ) { // Did WordPress check for updates?
            $this->get_repository_info(); // Get the repo info
            $out_of_date = version_compare( $this->github_response['tag_name'], $checked[$this->basename], 'gt' ); // Check if we're out of date
            if( $out_of_date ) {
              $new_files = $this->github_response['zipball_url']; // Get the ZIP
              $slug = current( explode('/', $this->basename ) ); // Create valid slug
              $plugin = array( // setup our plugin info
                'url' => $this->plugin["PluginURI"],
                'slug' => $slug,
                'package' => $new_files,
                'new_version' => $this->github_response['tag_name']
              );
              $transient->response[ $this->basename ] = (object) $plugin; // Return it in response
            }
          }
        }
        return $transient; // Return filtered transient
    }
    public function plugin_popup( $result, $action, $args ) {
		if( ! empty( $args->slug ) ) { // If there is a slug
			
			if( $args->slug == current( explode( '/' , $this->basename ) ) ) { // And it's our slug

				$this->get_repository_info(); // Get our repo info

				// Set it to an array
				$plugin = array(
					'name'				=> $this->plugin["Name"],
					'slug'				=> $this->basename,
					'version'			=> $this->github_response['tag_name'],
					'author'			=> $this->plugin["AuthorName"],
					'author_profile'	=> $this->plugin["AuthorURI"],
					'last_updated'		=> $this->github_response['published_at'],
					'homepage'			=> $this->plugin["PluginURI"],
					'short_description' => $this->plugin["Description"],
					'sections'			=> array(
						'Description'	=> $this->plugin["Description"],
						'Updates'		=> $this->github_response['body'],
					),
					'download_link'		=> $this->github_response['zipball_url']
				);

				return (object) $plugin; // Return the data
			}

		}
		return $result; // Otherwise return default
	}
	
	public function download_package( $args, $url ) {

		if ( null !== $args['filename'] ) {
			if( $this->authorize_token ) { 
				$args = array_merge( $args, array( "headers" => array( "Authorization" => "token {$this->authorize_token}" ) ) );
			}
		}
		
		remove_filter( 'http_request_args', [ $this, 'download_package' ] );

		return $args;
	}

	public function after_install( $response, $hook_extra, $result ) {
		global $wp_filesystem; // Get global FS object

		$install_directory = plugin_dir_path( $this->file ); // Our plugin directory
		$wp_filesystem->move( $result['destination'], $install_directory ); // Move files to the plugin dir
		$result['destination'] = $install_directory; // Set the destination for the rest of the stack

		if ( $this->active ) { // If it was active
			activate_plugin( $this->basename ); // Reactivate
		}

		return $result;
	}
}