// Copyright (c) 2017-2022 Cloudflare, Inc.
// Licensed under the Apache 2.0 license found in the LICENSE file or at:
//     https://opensource.org/licenses/Apache-2.0
//
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

import { Buffer } from 'node-internal:internal_buffer';

export async function blob(stream) {
  return new Blob(await Array.fromAsync(stream));
}

export async function arrayBuffer(stream) {
  const ret = await blob(stream);
  return ret.arrayBuffer();
}

export async function buffer(stream) {
  return Buffer.from(await arrayBuffer(stream));
}

export async function text(stream) {
  const dec = new TextDecoder();
  let str = '';
  for await (const chunk of stream) {
    if (typeof chunk === 'string') str += chunk;
    else str += dec.decode(chunk, { stream: true });
  }
  // Flush the streaming TextDecoder so that any pending
  // incomplete multibyte characters are handled.
  str += dec.decode(undefined, { stream: false });
  return str;
}

export async function json(stream) {
  const str = await text(stream);
  return JSON.parse(str);
}

export default {
  arrayBuffer,
  blob,
  buffer,
  text,
  json,
};