// Licensed to the Software Freedom Conservancy (SFC) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The SFC 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.

class FilterBy {
  constructor(level) {
    this.level_ = level
  }

  static logLevel(level) {
    if (
      level === undefined ||
      (level != undefined &&
        !['debug', 'error', 'info', 'warning'].includes(level))
    ) {
      throw Error(
        `Please pass valid log level. Valid log levels are 'debug', 'error', 'info' and 'warning'. Received: ${level}`
      )
    }

    return new FilterBy(level)
  }

  getLevel() {
    return this.level_
  }
}

// PUBLIC API

module.exports = {
  FilterBy,
}
