// Generated, do not edit. sha256:48d09dbb5cf2116c2b2c3990d8d1b662451d072fe40458fddcaa483e74bb3100
import { bech32, hexToBytes, bytesToHex, schnorr } from '../vendor/crypto/noble-scure.js';

const HEX64 = /^[0-9a-f]{64}$/;

export function npubFromHex(hex) {
  const v = String(hex ?? '').toLowerCase();
  if (!HEX64.test(v)) return null;
  return bech32.encode('npub', bech32.toWords(hexToBytes(v)));
}

export function shortKey(key, keep = 8) {
  const k = String(key ?? '');
  return k.length > keep * 2 + 1 ? `${k.slice(0, keep)}…${k.slice(-keep)}` : k;
}

function validSecret(bytes) {
  try { schnorr.getPublicKey(bytes); return true; } catch { return false; }
}

export function secretFromText(text) {
  const v = String(text ?? '').trim();
  if (v.startsWith('npub1')) return { error: 'npub' };
  let bytes = null;
  if (HEX64.test(v.toLowerCase())) bytes = hexToBytes(v.toLowerCase());
  else if (v.startsWith('nsec1')) {
    try {
      const { prefix, words } = bech32.decode(v);
      if (prefix === 'nsec') bytes = Uint8Array.from(bech32.fromWords(words));
    } catch { bytes = null; }
  }
  return bytes && bytes.length === 32 && validSecret(bytes) ? { secret: bytes } : { error: 'invalid' };
}

export const publicKeyOf = (secret) => bytesToHex(schnorr.getPublicKey(secret));

export const nsecFromSecret = (secret) => bech32.encode('nsec', bech32.toWords(secret));

export function newSecret(random = (n) => crypto.getRandomValues(new Uint8Array(n))) {
  for (;;) {
    const bytes = random(32);
    if (validSecret(bytes)) return bytes;
  }
}