// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import * as UI from '../../../ui/legacy/legacy.js';

export class RecorderShortcutHelper {
  #abortController: AbortController;
  #timeoutId: ReturnType<typeof setTimeout>|null = null;
  #timeout: number;

  constructor(timeout = 200) {
    this.#timeout = timeout;
    this.#abortController = new AbortController();
  }

  #cleanInternals(): void {
    this.#abortController.abort();
    if (this.#timeoutId) {
      clearTimeout(this.#timeoutId);
    }
    this.#abortController = new AbortController();
  }

  #handleCallback(callback: () => void): void {
    this.#cleanInternals();
    void callback();
  }

  handleShortcut(callback: () => void): void {
    this.#cleanInternals();

    document.addEventListener(
        'keyup',
        event => {
          if (UI.KeyboardShortcut.KeyboardShortcut.eventHasCtrlEquivalentKey(event)) {
            this.#handleCallback(callback);
          }
        },
        {signal: this.#abortController.signal},
    );

    this.#timeoutId = setTimeout(
        () => this.#handleCallback(callback),
        this.#timeout,
    );
  }
}