/*
 * Copyright (C)  2021-2022 Kristóf Marussy <kristof@marussy.com>
 *
 * This file is part of Sophie.
 *
 * Sophie is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, version 3.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 *
 * SPDX-License-Identifier: AGPL-3.0-only
 */

export type Disposable = Disposer | DisposableObject;

export type Disposer = () => void;

export interface DisposableObject {
  dispose(): void;
}

export class DisposeHelper implements DisposableObject {
  private readonly disposers: Disposer[] = [];

  protected registerDisposable<T extends Disposable>(disposable: T): T {
    if (typeof disposable === 'object') {
      this.disposers.push(() => disposable.dispose());
    } else {
      this.disposers.push(disposable);
    }
    return disposable;
  }

  dispose(): void {
    for (let i = this.disposers.length - 1; i >= 0; i -= 1) {
      this.disposers[i]();
    }
  }
}