import { Context } from "@oak/oak";
import { nip19 } from "@nostr/tools";
import { lookupUsernameByPubkey } from "../directory.ts";
import { notFoundHandler } from "../handlers/errors.ts";

const npubHandler = async function (ctx: Context) {
  const npub = ctx.state.path;
  let pubkey: string;

  try {
    pubkey = nip19.decode(npub).data as string;
  } catch (_e) {
    notFoundHandler(ctx);
    return;
  }

  const username = await lookupUsernameByPubkey(pubkey);

  if (username) {
    ctx.response.redirect(`/@${username}`);
  } else {
    notFoundHandler(ctx);
  }
};

export default npubHandler;