Create WooCommerce vendor managers on user registration

vendor-managers.php

/**
 * Turn all subscribers into Woo Vendors
 */
 
function figarts_make_users_vendors( $user_id ) {

	if (!defined('WC_PRODUCT_VENDORS_TAXONOMY')){
		return;
	}

	if (empty($user_id)) {
		wc_add_notice( __( '<strong>ERROR</strong>: Unable to create the vendor account for this user. Please contact the administrator to register your account.', 'localization-domain' ), 'error' );
	}

	$user_data = get_userdata($user_id);
	$username = $user_data->user_login;
	$email = $user_data->user_email;


	// Ensure vendor name is unique
	if ( term_exists( $username, WC_PRODUCT_VENDORS_TAXONOMY ) ) {
		$append     = 1;
		$o_username = $username;

		while ( term_exists( $username, WC_PRODUCT_VENDORS_TAXONOMY ) ) {
			$username = $o_username . $append;
			$append ++;
		}
	}

	// Create the new vendor
	$term = wp_insert_term(
		$username,
		WC_PRODUCT_VENDORS_TAXONOMY,
		array(
			'description' => sprintf( __( 'The vendor %s', 'localization-domain' ), $username ),
			'slug'        => sanitize_title( $username )
		)
	);

	if ( is_wp_error( $return ) ) {
		wc_add_notice( __( '<strong>ERROR</strong>: Unable to create the vendor account for this user. Please contact the administrator to register your account.', 'localization-domain' ), 'error' );
	} else {
		// Update vendor data
		$vendor_data['paypal'] = $email; // The email used for the account will be used for the payments
		$vendor_data['commission']   = ''; // The commission is 50% for each order
		$vendor_data['admins'][]     = $user_id; // The registered account is also the admin of the vendor
		$vendor_data['enable_bookings']     = 'yes'; // If you want vendors to access "Bookings" menu

		update_term_meta( $term['term_id'], 'vendor_data', apply_filters( 'wcpv_registration_default_vendor_data', $vendor_data ) );

		// change this user's role to pending vendor
		wp_update_user( apply_filters( 'wcpv_registration_default_user_data', array(
			'ID'   => $user_id,
			'role' => 'wc_product_vendors_manager_vendor',
		) ) );

	}
}