/*
 * Copyright 2020 The Backstage Authors
 *
 * 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 os from 'os';
import { Config } from '@backstage/config';
import {
  ReadTreeResponse,
  ReadTreeResponseFactoryOptions,
  ReadTreeResponseFactory,
  FromReadableArrayOptions,
} from '../types';
import { TarArchiveResponse } from './TarArchiveResponse';
import { ZipArchiveResponse } from './ZipArchiveResponse';
import { ReadableArrayResponse } from './ReadableArrayResponse';

export class DefaultReadTreeResponseFactory implements ReadTreeResponseFactory {
  static create(options: { config: Config }): DefaultReadTreeResponseFactory {
    return new DefaultReadTreeResponseFactory(
      options.config.getOptionalString('backend.workingDirectory') ??
        os.tmpdir(),
    );
  }

  constructor(private readonly workDir: string) {}

  async fromTarArchive(
    options: ReadTreeResponseFactoryOptions,
  ): Promise<ReadTreeResponse> {
    return new TarArchiveResponse(
      options.stream,
      options.subpath ?? '',
      this.workDir,
      options.etag,
      options.filter,
    );
  }

  async fromZipArchive(
    options: ReadTreeResponseFactoryOptions,
  ): Promise<ReadTreeResponse> {
    return new ZipArchiveResponse(
      options.stream,
      options.subpath ?? '',
      this.workDir,
      options.etag,
      options.filter,
    );
  }

  async fromReadableArray(
    options: FromReadableArrayOptions,
  ): Promise<ReadTreeResponse> {
    return new ReadableArrayResponse(options, this.workDir, '');
  }
}
