1797.设计一个验证系统.js

/*
 * @lc app=leetcode.cn id=1797 lang=javascript
 *
 * [1797] 设计一个验证系统
 */

// @lc code=start
/**
 * @param {number} timeToLive
 */
var AuthenticationManager = function(timeToLive) {
  this.timeToLive = timeToLive
  this.manager = {}
  // this.manager = new Map() //管理所有token {}
};

/** 
 * @param {string} tokenId 
 * @param {number} currentTime
 * @return {void}
 */
AuthenticationManager.prototype.generate = function(tokenId, currentTime) {
  this.manager[tokenId] = currentTime
  // this.manager.set(tokenId,currentTime)
};

/** 
 * @param {string} tokenId 
 * @param {number} currentTime
 * @return {void}
 */
AuthenticationManager.prototype.renew = function(tokenId, currentTime) {
  if(tokenId in this.manager){
    let time = this.manager[tokenId]
    if(time+this.timeToLive >currentTime){
      this.manager[tokenId] = currentTime
    }
  }
};

/** 
 * @param {number} currentTime
 * @return {number}
 */
AuthenticationManager.prototype.countUnexpiredTokens = function(currentTime) {
  let result = 0

  for(const time of Object.values(this.manager)){
    if(time + this.timeToLive>currentTime){
      result+=1
    }
  }
  return result
};

/**
 * Your AuthenticationManager object will be instantiated and called as such:
 * var obj = new AuthenticationManager(timeToLive)
 * obj.generate(tokenId,currentTime)
 * obj.renew(tokenId,currentTime)
 * var param_3 = obj.countUnexpiredTokens(currentTime)
 */
// @lc code=end