Scriptable Cache script

Cache.js

// Variables used by Scriptable.
// These must be at the very top of the file. Do not edit.
// icon-color: deep-gray; icon-glyph: magic;
// Hosting the Cache script myself to make it easier to find for those using my scripts :)
// NOTE: This script was written by evandcoleman: https://github.com/evandcoleman/scriptable

class Cache {
  constructor(name) {
    this.fm = FileManager.iCloud();
    this.cachePath = this.fm.joinPath(this.fm.documentsDirectory(), name);

    if (!this.fm.fileExists(this.cachePath)) {
      this.fm.createDirectory(this.cachePath);
    }
  }
  async read(key, expirationMinutes) {
    try {
      const path = this.fm.joinPath(this.cachePath, key);
      await this.fm.downloadFileFromiCloud(path);
      const createdAt = this.fm.creationDate(path);

      if (expirationMinutes) {
        if ((new Date()) - createdAt > (expirationMinutes * 60000)) {
          this.fm.remove(path);
          return null;
        }
      }

      const value = this.fm.readString(path);

      try {
        return JSON.parse(value);
      } catch (error) {
        return value;
      }
    } catch (error) {
      return null;
    }
  }
  write(key, value) {
    const path = this.fm.joinPath(this.cachePath, key.replace('/', '-'));
    console.log(`Caching to ${path}...`);

    if (typeof value === 'string' || value instanceof String) {
      this.fm.writeString(path, value);
    } else {
      this.fm.writeString(path, JSON.stringify(value));
    }
  }
}

module.exports = Cache;