set of functions that allows you to integrate domain names and have them show up where wallet ady is normally displayed

getAllDomainOwner.ts

import { MainDomain, NameAccountAndDomain, TldParser } from "@onsol/tldparser";
import { Connection, PublicKey } from "@solana/web3.js";

/**
 * Validates and resolves an Eclipse address or domain to a PublicKey.
 * Mostly used in searches.
 * Ideally the value is debounced on typing
 * 
 * This function can handle two types of input:
 * 1. An Eclipse domain (e.g., "miester.turbo")
 * 2. An Eclipse public key (as a base58 encoded string)
 * 
 * For domains, it resolves the owner's public key.
 * For public keys, it validates the key and returns it as a PublicKey object.
 *
 * @param {Connection} connection - A connection to an Eclipse cluster
 * @param {string} domainOrPubkey - A Eclipse domain or public key string
 * @returns {Promise<PublicKey | undefined>} The resolved PublicKey or undefined if not found or invalid
 */
export async function validateEclipseAddress(
  connection: Connection,
  domainOrPubkey: string,
): Promise<PublicKey | undefined> {
  if (domainOrPubkey.includes('.') && domainOrPubkey.split('.').length === 2) {
    const parser = new TldParser(connection);
    return await parser.getOwnerFromDomainTld(domainOrPubkey);
  } 
  
  try {
    const userAddress = new PublicKey(domainOrPubkey);
    return PublicKey.isOnCurve(userAddress.toBytes()) ? userAddress : undefined;
  } catch {
    return undefined;
  }
}

/**
 * Retrieves the main domain associated with a given Eclipse public key.
 * 
 * A user can set one of their domains as the "main" domain. This function
 * fetches that main domain if it exists.
 *
 * @param {Connection} connection - A connection to an Eclipse cluster
 * @param {PublicKey} publicKey - The public key to query for the main domain
 * @returns {Promise<MainDomain | undefined>} The main domain associated with the public key or undefined if not found
 */
export async function getUserMainDomain(
  connection: Connection,
  publicKey: PublicKey,
): Promise<MainDomain | undefined> {
  const parser = new TldParser(connection);
  try {
    return await parser.getMainDomain(publicKey);
  } catch {
    return undefined;
  }
}

/**
 * Retrieves all domains associated with a given Eclipse public key.
 * 
 * This function fetches all domains owned by the specified public key,
 * regardless of whether they are set as the main domain or not.
 *
 * @param {Connection} connection - A connection to an Eclipse cluster
 * @param {PublicKey} publicKey - The public key to query for domains
 * @returns {Promise<NameAccountAndDomain[] | undefined>} An array of all domains associated with the public key or undefined if none found
 */
export async function getUserDomains(
  connection: Connection,
  publicKey: PublicKey,
): Promise<NameAccountAndDomain[] | undefined> {
  const parser = new TldParser(connection);
  try {
    const domains = await parser.getParsedAllUserDomains(publicKey);
    return domains && domains.length > 0 ? domains : undefined;
  } catch {
    return undefined;
  }
}