import moment from 'moment';


export class AUniqCache {
  hourMap = {};
  name = '';
  keepHours = 2;

  constructor (name?) {
    this.name = name;
  }

  remove(item) {
    const hour = moment().format('YYYY-MM-DD.HH');
    delete this.hourMap[hour][item];
  }

  add(item) {
    const hour = moment().format('YYYY-MM-DD.HH');

    this.hourMap[hour] = {
      ...this.hourMap[hour],
      [item]: 1
    };

    this.cleanMap();
  }

  cleanMap() {
    const minute = moment().minute();
    const hours = Object.keys(this.hourMap);
    if (minute === 0) {
      for (const h of hours) {
        if (moment().diff(moment(h), 'hours') > this.keepHours) {
          // 如果当前时间超过2小时
          delete this.hourMap[h];
        }
      }
    }
  }
  has(item) {
    const hours = Object.keys(this.hourMap);
    for (const h of hours) {
      if (this.hourMap[h] && this.hourMap[h][item]) {
        return true;
      }
    }
    return false;
  }
  isValid(item) {
    return !this.has(item);
  }
}