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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.// Copyright Joyent and Node contributors. All rights reserved. MIT license.
import { ERR_ASYNC_TYPE, ERR_INVALID_ASYNC_ID } from "./internal/errors.ts";import { validateFunction, validateString } from "./internal/validators.mjs";import {  // deno-lint-ignore camelcase  async_id_symbol,  destroyHooksExist,  emitInit,  enabledHooksExist,  getDefaultTriggerAsyncId,  hasAsyncIdStack,  initHooksExist,  newAsyncId,  registerDestroyHook,  // deno-lint-ignore camelcase  trigger_async_id_symbol,} from "./internal/async_hooks.ts";
const destroyedSymbol = Symbol("destroyed");
type AsyncResourceOptions = number | {  triggerAsyncId?: number;  requireManualDestroy?: boolean;};
export class AsyncResource {  [async_id_symbol]: number;  [trigger_async_id_symbol]: number;  [destroyedSymbol]!: { destroyed: boolean };
  constructor(type: string, opts: AsyncResourceOptions = {}) {    validateString(type, "type");
    let triggerAsyncId: number;    let requireManualDestroy = false;    if (typeof opts !== "number") {      triggerAsyncId = opts.triggerAsyncId === undefined        ? getDefaultTriggerAsyncId()        : opts.triggerAsyncId;      requireManualDestroy = !!opts.requireManualDestroy;    } else {      triggerAsyncId = opts;    }
    // Unlike emitInitScript, AsyncResource doesn't supports null as the    // triggerAsyncId.    if (!Number.isSafeInteger(triggerAsyncId) || triggerAsyncId < -1) {      throw new ERR_INVALID_ASYNC_ID("triggerAsyncId", triggerAsyncId);    }
    const asyncId = newAsyncId();    this[async_id_symbol] = asyncId;    this[trigger_async_id_symbol] = triggerAsyncId;
    if (initHooksExist()) {      if (enabledHooksExist() && type.length === 0) {        throw new ERR_ASYNC_TYPE(type);      }
      emitInit(asyncId, type, triggerAsyncId, this);    }
    if (!requireManualDestroy && destroyHooksExist()) {      // This prop name (destroyed) has to be synchronized with C++      const destroyed = { destroyed: false };      this[destroyedSymbol] = destroyed;      registerDestroyHook(this, asyncId, destroyed);    }  }
  runInAsyncScope(    fn: (...args: unknown[]) => unknown,    thisArg: unknown,    ...args: unknown[]  ) {    // deno-lint-ignore no-unused-vars    const asyncId = this[async_id_symbol];    // TODO(kt3k): Uncomment the below    // emitBefore(asyncId, this[trigger_async_id_symbol], this);
    try {      const ret = Reflect.apply(fn, thisArg, args);
      return ret;    } finally {      if (hasAsyncIdStack()) {        // TODO(kt3k): Uncomment the below        // emitAfter(asyncId);      }    }  }
  emitDestroy() {    if (this[destroyedSymbol] !== undefined) {      this[destroyedSymbol].destroyed = true;    }    // TODO(kt3k): Uncomment the below    // emitDestroy(this[async_id_symbol]);    return this;  }
  asyncId() {    return this[async_id_symbol];  }
  triggerAsyncId() {    return this[trigger_async_id_symbol];  }
  bind(fn: (...args: unknown[]) => unknown, thisArg = this) {    validateFunction(fn, "fn");    const ret = this.runInAsyncScope.bind(      this,      fn,      thisArg,    );    Object.defineProperties(ret, {      "length": {        configurable: true,        enumerable: false,        value: fn.length,        writable: false,      },      "asyncResource": {        configurable: true,        enumerable: true,        value: this,        writable: true,      },    });    return ret;  }
  static bind(    fn: (...args: unknown[]) => unknown,    type: string | undefined,    thisArg: AsyncResource | undefined,  ) {    type = type || fn.name;    return (new AsyncResource(type || "bound-anonymous-fn")).bind(fn, thisArg);  }}
export function executionAsyncId() {  return 1;}
class AsyncHook {  enable() {  }
  disable() {  }}
export function createHook() {  return new AsyncHook();}
// Placing all exports down here because the exported classes won't export// otherwise.export default {  // Embedder API  AsyncResource,  executionAsyncId,  createHook,};