text: /*
   * Kuzzle, a backend software, self-hostable and ready to use
   * to power modern apps
   *
   * Copyright 2015-2020 Kuzzle
   * mailto: support AT kuzzle.io
   * website: http://kuzzle.io
   *
   * 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.
   */
  
  'use strict';
  
  class Logger {
    constructor() {
      this.logMethods = ['info', 'warn', 'error', 'silly', 'debug', 'verbose'];
  
      this.failsafeModeString = global.kuzzle.config.plugins.common.failsafeMode
        ? '[FAILSAFE MODE] '
        : '';
  
      this._useConsole();
  
      global.kuzzle.once('core:kuzzleStart', this._useLogger.bind(this));
    }
  
    _useConsole() {
      // until kuzzle has started, use the console to print logs
      for (const method of this.logMethods) {
        this[method] = message => {
          /* eslint-disable-next-line no-console */
          const writer = console[method] || console.log;
  
          writer(`${this.failsafeModeString}${message}`);
        };
      }
    }
  
    _useLogger() {
  
      // when kuzzle has started, use the event to dispatch logs
      for (const method of this.logMethods) {
        this[method] = message => {
          if ( global.kuzzle.asyncStore.exists()
            && global.kuzzle.asyncStore.has('REQUEST')
          ) {
            const request = global.kuzzle.asyncStore.get('REQUEST');
  
            global.kuzzle.emit(`log:${method}`, `[${global.kuzzle.id}] ${this.failsafeModeString}[${request.id}] ${message}`);
          }
          else {
            global.kuzzle.emit(`log:${method}`, `[${global.kuzzle.id}] ${this.failsafeModeString}${message}`);
          }
        };
      }
    }
  }
  
  module.exports = Logger;
  