text: /*
   * Copyright 2020 Spotify AB
   *
   * 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.
   */
  
  import goodMorning from './locales/goodMorning.locales.json';
  import goodAfternoon from './locales/goodAfternoon.locales.json';
  import goodEvening from './locales/goodEvening.locales.json';
  
  // Select a large random integer at startup, to prevent the greetings to change every time the user
  // navigates.
  const greetingRandomSeed = Math.floor(Math.random() * 1000000);
  
  export function getTimeBasedGreeting() {
    const random = array => array[greetingRandomSeed % array.length];
  
    const currentHour = new Date(Date.now()).getHours();
    if (currentHour >= 23) {
      return {
        language: 'Seriously',
        greeting: 'Get some rest',
      };
    }
    const timeOfDay = hour => {
      if (hour < 12) return goodMorning;
      if (hour < 17) return goodAfternoon;
      return goodEvening;
    };
    const greetings = timeOfDay(currentHour);
    const greetingsKey = random(Object.keys(greetings));
    return {
      language: greetingsKey,
      greeting: greetings[greetingsKey],
    };
  }
  