/**********************************************************************
 * Copyright (C) 2023-2025 Red Hat, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * SPDX-License-Identifier: Apache-2.0
 ***********************************************************************/

import { injectable } from 'inversify';

import { CancellationTokenSource } from './cancellation-token.js';

@injectable()
export class CancellationTokenRegistry {
  private callbackId = 0;

  private callbacksCancellableToken = new Map<number, CancellationTokenSource>();

  createCancellationTokenSource(): number {
    // keep track of this request
    this.callbackId++;

    const token = new CancellationTokenSource();

    // store the callback that will resolve the promise
    this.callbacksCancellableToken.set(this.callbackId, token);

    return this.callbackId;
  }

  getCancellationTokenSource(id: number): CancellationTokenSource | undefined {
    if (this.hasCancellationTokenSource(id)) {
      return this.callbacksCancellableToken.get(id);
    }
    return undefined;
  }

  hasCancellationTokenSource(id: number): boolean {
    return this.callbacksCancellableToken.has(id);
  }
}
