node-hoyolab/dist/cjs/cache/cache.js

node-hoyolab is an unofficial API Wrapper library developed to integrate with the Hoyolab, which provides a more convenient way to access the Hoyolab API.

"use strict";
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __defNormalProp = (obj, key, value) => key in obj ? __defProp(obj, key, { enumerable: true, configurable: true, writable: true, value }) : obj[key] = value;
var __export = (target, all) => {
  for (var name in all)
    __defProp(target, name, { get: all[name], enumerable: true });
};
var __copyProps = (to, from, except, desc) => {
  if (from && typeof from === "object" || typeof from === "function") {
    for (let key of __getOwnPropNames(from))
      if (!__hasOwnProp.call(to, key) && key !== except)
        __defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
  }
  return to;
};
var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
var __publicField = (obj, key, value) => {
  __defNormalProp(obj, typeof key !== "symbol" ? key + "" : key, value);
  return value;
};
var cache_exports = {};
__export(cache_exports, {
  Cache: () => Cache
});
module.exports = __toCommonJS(cache_exports);
var import_os = require("os");
class Cache {
  /**
   * Creates an instance of Cache.
   */
  constructor() {
    __publicField(this, "cache", /* @__PURE__ */ new Map());
    __publicField(this, "maxCacheCap");
    this.maxCacheCap = this.calculateMaxCapacity();
  }
  /**
   * Calculates the maximum capacity of the cache based on available system memory.
   * @returns The maximum capacity of the cache.
   */
  calculateMaxCapacity() {
    const totalMemory = (0, import_os.totalmem)();
    const maxCapacityPercentage = 0.2;
    const maxCapacityBytes = totalMemory * maxCapacityPercentage;
    return Math.floor(maxCapacityBytes / (1024 * 50));
  }
  /**
   * Retrieves the value associated with the specified key from the cache.
   * @param key - The key to look up in the cache.
   * @returns The cached value if found and not expired; otherwise, returns null.
   */
  get(key) {
    const entry = this.cache.get(key);
    if (entry && Date.now() < entry.ttl) {
      return entry.value;
    }
    return null;
  }
  /**
   * Stores a key-value pair in the cache with a specified TTL (Time To Live).
   * @param key - The key to store in the cache.
   * @param value - The value to associate with the key.
   * @param ttl - The TTL (Time To Live) in seconds for the cached entry.
   */
  set(key, value, ttl) {
    if (ttl < 1) {
      return;
    }
    if (this.cache.size >= this.maxCacheCap) {
      const oldestKey = this.cache.keys().next().value;
      this.cache.delete(oldestKey);
    }
    const expireTime = Date.now() + ttl * 1e3;
    const entry = { value, ttl: expireTime };
    this.cache.set(key, entry);
  }
  /**
   * Removes the entry with the specified key from the cache.
   * @param key - The key to delete from the cache.
   */
  delete(key) {
    this.cache.delete(key);
  }
  /**
   * Checks if the cache contains an entry with the specified key.
   * @param key - The key to check in the cache.
   * @returns True if the cache contains the key; otherwise, false.
   */
  has(key) {
    return this.get(key) !== null;
  }
}
// Annotate the CommonJS export names for ESM import in node:
0 && (module.exports = {
  Cache
});