service-utilities/lib/NumberBase64.js

Utility Package for FIORI UI5

/**
 * @module NumberBase64
 * @description Utilities to create a Number in Base 64
 * @author jpanti
 * @version 1.0.0
 * @created 2025-08-01
 * @lastModified 2025-08-01
 * @license ISC
 */

sap.ui.define([], () => {
  "use strict";
  const BASE64_CHARS =
    "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";

  class NumberBase64 {
    #valueInteger;
    #valueBase64;
    constructor(value) {
      this.setValue(value);
    }
    isNumeric(value) {
      return !isNaN(value) && !isNaN(parseFloat(value));
    }
    setValue(value) {
      if (!this.isNumeric(value)) {
        this.#valueInteger = value;
        this.#valueBase64 = this.encode(value);
      } else {
        this.#valueInteger = this.decode(value);
        this.#valueBase64 = value;
      }
    }
    getInteger() {
      return this.#valueInteger;
    }
    getValue() {
      return this.#valueBase64;
    }

    encode(integer) {
      if (integer === 0) return BASE64_CHARS[0];
      var base64 = "";
      while (integer > 0) {
        base64 = BASE64_CHARS[integer % 64] + base64;
        integer = Math.floor(integer / 64);
      }
      return base64;
    }

    decode(base64) {
      var integer = 0;
      for (var i = 0; i < base64.length; i++) {
        integer = integer * 64 + BASE64_CHARS.indexOf(base64[i]);
      }
      return integer;
    }
  }

  return NumberBase64;
});