@pittica/google-cloud-storage-helpers/dist/storage/json.js

Helpers for Google Cloud Storage.

// Copyright 2024-2025 Pittica S.r.l.
//
// 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.

const {
  Storage
} = require("@google-cloud/storage");
const log = require("@pittica/logger-helpers");

/**
 * Writes JSON data.
 *
 * @param {string} file File name and path.
 * @param {object} body Document body.
 *
 * @returns {boolean} Write action response.
 */
exports.writeJson = async (file, body, bucket) => {
  const storage = new Storage();
  const stream = storage.bucket(bucket).file(file).createWriteStream({
    metadata: {
      contentType: "application/json"
    }
  });
  stream.on("error", error => log.error(error));
  stream.on("finish", () => log.success(`"${file}" has been written.`));
  const buffer = Buffer.from(JSON.stringify(body));
  return stream.end(buffer);
};

/**
 * Group files by table.
 *
 * @param {Array} files An array of files.
 */
exports.groupJson = files => {
  const result = {};
  files.forEach(file => {
    if (file.endsWith(".json")) {
      const group = file.split(/^(.*)\-[\d]+\.json$/gis);
      if (group.length > 1) {
        if (typeof result[group[1]] === "undefined") {
          result[group[1]] = [];
        }
        result[group[1]].push(file);
      }
    }
  });
  return result;
};