// @ts-nocheck
/*
 * Copyright (C) 2020 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

export function initializeTransformStream(this) {
  let transformer = arguments[0];

  // This is the path for CreateTransformStream.
  if ($isObject(transformer) && $getByIdDirectPrivate(transformer, "TransformStream")) return this;

  let writableStrategy = arguments[1];
  let readableStrategy = arguments[2];

  if (transformer === undefined) transformer = null;

  if (readableStrategy === undefined) readableStrategy = {};

  if (writableStrategy === undefined) writableStrategy = {};

  let transformerDict = {};
  if (transformer !== null) {
    if ("start" in transformer) {
      transformerDict["start"] = transformer["start"];
      if (typeof transformerDict["start"] !== "function") $throwTypeError("transformer.start should be a function");
    }
    if ("transform" in transformer) {
      transformerDict["transform"] = transformer["transform"];
      if (typeof transformerDict["transform"] !== "function")
        $throwTypeError("transformer.transform should be a function");
    }
    if ("flush" in transformer) {
      transformerDict["flush"] = transformer["flush"];
      if (typeof transformerDict["flush"] !== "function") $throwTypeError("transformer.flush should be a function");
    }

    if ("readableType" in transformer) throw new RangeError("TransformStream transformer has a readableType");
    if ("writableType" in transformer) throw new RangeError("TransformStream transformer has a writableType");
  }

  const readableHighWaterMark = $extractHighWaterMark(readableStrategy, 0);
  const readableSizeAlgorithm = $extractSizeAlgorithm(readableStrategy);

  const writableHighWaterMark = $extractHighWaterMark(writableStrategy, 1);
  const writableSizeAlgorithm = $extractSizeAlgorithm(writableStrategy);

  const startPromiseCapability = $newPromiseCapability(Promise);
  $initializeTransformStream(
    this,
    startPromiseCapability.promise,
    writableHighWaterMark,
    writableSizeAlgorithm,
    readableHighWaterMark,
    readableSizeAlgorithm,
  );
  $setUpTransformStreamDefaultControllerFromTransformer(this, transformer, transformerDict);

  if ("start" in transformerDict) {
    const controller = $getByIdDirectPrivate(this, "controller");
    const startAlgorithm = () => $promiseInvokeOrNoopMethodNoCatch(transformer, transformerDict["start"], [controller]);
    startAlgorithm().$then(
      () => {
        // FIXME: We probably need to resolve start promise with the result of the start algorithm.
        startPromiseCapability.resolve.$call();
      },
      error => {
        startPromiseCapability.reject.$call(undefined, error);
      },
    );
  } else startPromiseCapability.resolve.$call();

  return this;
}

$getter;
export function readable() {
  if (!$isTransformStream(this)) throw $ERR_INVALID_THIS("TransformStream");

  return $getByIdDirectPrivate(this, "readable");
}

export function writable() {
  if (!$isTransformStream(this)) throw $ERR_INVALID_THIS("TransformStream");

  return $getByIdDirectPrivate(this, "writable");
}
