/**
 * Copyright 2025 Google LLC
 *
 * 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
 *
 *      https://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 {BigQuery, Dataset, CreateDatasetOptions} from '@google-cloud/bigquery';
import {getLogger} from './logger.js';

export const OAUTH_SCOPES = [
  'https://www.googleapis.com/auth/cloud-platform',
  'https://www.googleapis.com/auth/cloud-platform.read-only',
  'https://www.googleapis.com/auth/bigquery',
  'https://www.googleapis.com/auth/bigquery.readonly',
];

export async function getDataset(
  bigquery: BigQuery,
  datasetId: string,
  datasetLocation?: string
): Promise<Dataset> {
  let dataset: Dataset;
  const options: CreateDatasetOptions = {
    location: datasetLocation,
  };
  try {
    dataset = bigquery.dataset(datasetId, options);
    dataset = (await dataset.get({autoCreate: true}))[0];
    if (dataset.location !== dataset.metadata.location) {
      dataset = bigquery.dataset(datasetId, {
        location: dataset.metadata.location,
      });
    }
  } catch (e) {
    const logger = getLogger();
    logger.error(`Failed to get or create the dataset ${datasetId}`);
    throw e;
  }
  return dataset;
}