module.exports = class KeyGenerator {

  // Initialise a new generator with the given key space.
  constructor(options = {}) {
    this.keyLength = options.keyLength;
    this.keySpace = options.keySpace;
  }

  // Generate a key of the given length.
  createKey() {
    var text = "";
    for (var i = 0; i < this.keyLength; i++) {
      const index = Math.floor(Math.random() * this.keySpace.length);
      text += this.keySpace.charAt(index);
    }
    return text;
  }

};