/**
 * Copyright 2017 Google Inc. All rights reserved.
 *
 * 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.
 */
import Launcher from './Launcher';
import type {LaunchOptions, ChromeArgOptions, BrowserOptions, ProductLauncher} from './Launcher';
import {BrowserFetcher, BrowserFetcherOptions} from './BrowserFetcher';
import {puppeteerErrors, PuppeteerErrors} from './Errors';

import {devicesMap} from './DeviceDescriptors';
import type {DevicesMap} from './/DeviceDescriptors';
import {Browser} from './Browser';
import * as QueryHandler from './QueryHandler';

export class Puppeteer {
  _projectRoot: string;
  _preferredRevision: string;
  _isPuppeteerCore: boolean;
  _changedProduct = false;
  __productName: string;
  _lazyLauncher: ProductLauncher;

  constructor(projectRoot: string, preferredRevision: string, isPuppeteerCore: boolean, productName: string) {
    this._projectRoot = projectRoot;
    this._preferredRevision = preferredRevision;
    this._isPuppeteerCore = isPuppeteerCore;
    // track changes to Launcher configuration via options or environment variables
    this.__productName = productName;
  }

  launch(options: LaunchOptions & ChromeArgOptions & BrowserOptions & {product?: string; extraPrefsFirefox?: {}} = {}): Promise<Browser> {
    if (options.product)
      this._productName = options.product;
    return this._launcher.launch(options);
  }

  connect(options: BrowserOptions & {
    browserWSEndpoint?: string;
    browserURL?: string;
    transport?: Puppeteer.ConnectionTransport;
    product?: string;
  }): Promise<Browser> {
    if (options.product)
      this._productName = options.product;
    return this._launcher.connect(options);
  }

  set _productName(name: string) {
    if (this.__productName !== name)
      this._changedProduct = true;
    this.__productName = name;
  }

  get _productName(): string {
    return this.__productName;
  }

  executablePath(): string {
    return this._launcher.executablePath();
  }

  get _launcher(): ProductLauncher {
    if (!this._lazyLauncher || this._lazyLauncher.product !== this._productName || this._changedProduct) {
      // @ts-ignore
      // eslint-disable-next-line @typescript-eslint/no-var-requires
      const packageJson = require('../package.json');
      switch (this._productName) {
        case 'firefox':
          this._preferredRevision = packageJson.puppeteer.firefox_revision;
          break;
        case 'chrome':
        default:
          this._preferredRevision = packageJson.puppeteer.chromium_revision;
      }
      this._changedProduct = false;
      this._lazyLauncher = Launcher(this._projectRoot, this._preferredRevision, this._isPuppeteerCore, this._productName);
    }
    return this._lazyLauncher;
  }

  get product(): string {
    return this._launcher.product;
  }

  get devices(): DevicesMap {
    return devicesMap;
  }

  get errors(): PuppeteerErrors {
    return puppeteerErrors;
  }

  defaultArgs(options: ChromeArgOptions): string[] {
    return this._launcher.defaultArgs(options);
  }

  createBrowserFetcher(options: BrowserFetcherOptions): BrowserFetcher {
    return new BrowserFetcher(this._projectRoot, options);
  }

  // eslint-disable-next-line @typescript-eslint/camelcase
  __experimental_registerCustomQueryHandler(name: string, queryHandler: QueryHandler.QueryHandler): void {
    QueryHandler.registerCustomQueryHandler(name, queryHandler);
  }

  // eslint-disable-next-line @typescript-eslint/camelcase
  __experimental_unregisterCustomQueryHandler(name: string): void {
    QueryHandler.unregisterCustomQueryHandler(name);
  }

  // eslint-disable-next-line @typescript-eslint/camelcase
  __experimental_customQueryHandlers(): Map<string, QueryHandler.QueryHandler> {
    return QueryHandler.customQueryHandlers();
  }

  // eslint-disable-next-line @typescript-eslint/camelcase
  __experimental_clearQueryHandlers(): void {
    QueryHandler.clearQueryHandlers();
  }
}