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import type { U8aLike } from '../types.ts';
import { u8aConcatStrict } from './concat.ts';import { u8aEq } from './eq.ts';import { u8aToU8a } from './toU8a.ts';
/** @internal */export const U8A_WRAP_ETHEREUM = /*#__PURE__*/ u8aToU8a('\x19Ethereum Signed Message:\n');
/** @internal */export const U8A_WRAP_PREFIX = /*#__PURE__*/ u8aToU8a('<Bytes>');
/** @internal */export const U8A_WRAP_POSTFIX = /*#__PURE__*/ u8aToU8a('</Bytes>');
const WRAP_LEN = U8A_WRAP_PREFIX.length + U8A_WRAP_POSTFIX.length;
/** @internal */export function u8aIsWrapped (u8a: Uint8Array, withEthereum: boolean): boolean {  return (    (      u8a.length >= WRAP_LEN &&      u8aEq(u8a.subarray(0, U8A_WRAP_PREFIX.length), U8A_WRAP_PREFIX) &&      u8aEq(u8a.slice(-U8A_WRAP_POSTFIX.length), U8A_WRAP_POSTFIX)    ) ||    (      withEthereum &&      u8a.length >= U8A_WRAP_ETHEREUM.length &&      u8aEq(u8a.subarray(0, U8A_WRAP_ETHEREUM.length), U8A_WRAP_ETHEREUM)    )  );}
/** * @name u8aUnwrapBytes * @description Removes all <Bytes>...</Bytes> wrappers from the supplied value */export function u8aUnwrapBytes (bytes: U8aLike): Uint8Array {  const u8a = u8aToU8a(bytes);
  // we don't want to unwrap Ethereum-style wraps  return u8aIsWrapped(u8a, false)    ? u8a.subarray(U8A_WRAP_PREFIX.length, u8a.length - U8A_WRAP_POSTFIX.length)    : u8a;}
/** * @name u8aWrapBytes * @description Adds a <Bytes>...</Bytes> wrapper to the supplied value (if not already existing) */export function u8aWrapBytes (bytes: U8aLike): Uint8Array {  const u8a = u8aToU8a(bytes);
  // if Ethereum-wrapping, we don't add our wrapping bytes  return u8aIsWrapped(u8a, true)    ? u8a    : u8aConcatStrict([U8A_WRAP_PREFIX, u8a, U8A_WRAP_POSTFIX]);}