import { Client } from "ldapts";
import config from "./config.ts";

const { ldap, ldapEnabled } = config;

let client: Client;
if (ldapEnabled) {
  client = new Client({ url: ldap.url as string });
}

export async function lookupPubkeyByUsername(
  username: string,
): Promise<string | undefined> {
  let pubkey: string | undefined;

  try {
    await client.bind(ldap.bindDN as string, ldap.password as string);

    const { searchEntries } = await client.search(ldap.searchDN as string, {
      filter: `(cn=${username})`,
      attributes: ["nostrKey"],
    });

    if (
      searchEntries.length > 0 &&
      typeof searchEntries[0].nostrKey === "string"
    ) {
      pubkey = searchEntries[0].nostrKey.toString();
    }

    await client.unbind();
  } catch (e) {
    await client.unbind();
    throw e;
  }

  return pubkey;
}

export async function lookupUsernameByPubkey(
  pubkey: string,
): Promise<string | undefined> {
  let username: string | undefined;

  try {
    await client.bind(ldap.bindDN as string, ldap.password as string);

    const { searchEntries } = await client.search(ldap.searchDN as string, {
      filter: `(nostrKey=${pubkey})`,
      attributes: ["cn"],
    });

    if (searchEntries.length > 0) {
      username = searchEntries[0].cn.toString();
    }

    await client.unbind();
  } catch (e) {
    await client.unbind();
    throw e;
  }

  return username;
}