als-path-tree/lib/options.js

A Node.js library for managing a virtual file system structure, offering functionalities for file and directory operations with a shared storage system.

class Options {
   static options = {
      logger: console,
      thresholdRating: 3,
      thresholdPercentage: 20,
      maxStoreTime: 1000 * 60 * 60 * 24,
      weights: {
         accessCount: 5, // Чем больше обращений, тем выше приоритет
         lastAccess: -3, // Чем старше дата последнего обращения, тем ниже приоритет
         size: -1, // Чем больше размер файла, тем ниже приоритет
      }
   }
   constructor() {}
   get logger() { return Options.options.logger }
   get thresholdRating() { return Options.options.thresholdRating }
   get thresholdPercentage() { return Options.options.thresholdPercentage }
   get maxStoreTime() { return Options.options.maxStoreTime }
   get weights() { return Options.options.weights }

   set logger(logger) {
      const methods = ['log', 'warn', 'error']
      if (typeof logger !== 'object') throw new Error(`logger must be object with methods ${methods.join}.`)
      for (const methodName of methods) {
         if (typeof logger[methodName] !== 'function') throw new Error(`logger must to include method ${methodName} as function.`)
      }
      Options.options.logger = logger
   }

   set thresholdRating(value) {
      if (typeof value !== 'number' || value > 100 || value < 1) throw new Error('Threshold rating must be a number between 1 and 100.');
      Options.options.thresholdRating = value
   }

   set thresholdPercentage(value) {
      if (typeof value !== 'number' || value > 100 || value < 1) throw new Error('Threshold percentage must be a number between 1 and 100.');
      Options.options.thresholdPercentage = value
   }

   set maxStoreTime(value) {
      if (typeof value !== 'number' || value < 1000 * 60) throw new Error('maxStoreTime must be a number between larger than 1000*60 (minute).');
      Options.options.maxStoreTime = value
   }

   set weights(obj={}) {
      const keys = ['accessCount', 'lastAccess', 'size']
      keys.forEach(key => {if(typeof obj[key] === 'number') Options.options.weights[key] = obj[key]})
   }
}

module.exports = new Options()