"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = copyLocalFile;

var _progress = _interopRequireDefault(require("../progress"));

var _fs = require("fs");

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

/*
 * Licensed to Elasticsearch B.V. under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch B.V. licenses this file to you 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.
 */
function openSourceFile({
  sourcePath
}) {
  try {
    const fileInfo = (0, _fs.statSync)(sourcePath);
    const readStream = (0, _fs.createReadStream)(sourcePath);
    return {
      readStream,
      fileInfo
    };
  } catch (err) {
    if (err.code === 'ENOENT') {
      throw new Error('ENOTFOUND');
    }

    throw err;
  }
}

async function copyFile({
  readStream,
  writeStream,
  progress
}) {
  await new Promise((resolve, reject) => {
    // if either stream errors, fail quickly
    readStream.on('error', reject);
    writeStream.on('error', reject); // report progress as we transfer

    readStream.on('data', chunk => {
      progress.progress(chunk.length);
    }); // write the download to the file system

    readStream.pipe(writeStream); // when the write is done, we are done

    writeStream.on('finish', resolve);
  });
}
/*
// Responsible for managing local file transfers
*/


async function copyLocalFile(logger, sourcePath, targetPath) {
  try {
    const {
      readStream,
      fileInfo
    } = openSourceFile({
      sourcePath
    });
    const writeStream = (0, _fs.createWriteStream)(targetPath);

    try {
      const progress = new _progress.default(logger);
      progress.init(fileInfo.size);
      await copyFile({
        readStream,
        writeStream,
        progress
      });
      progress.complete();
    } catch (err) {
      readStream.close();
      writeStream.close();
      throw err;
    }
  } catch (err) {
    logger.error(err);
    throw err;
  }
}

module.exports = exports.default;