wongjiahau/ttap-web

import { BeautifySubjectName } from "./beautifySubjectName";
import { Str } from "./str";

export function GetInitial(input: string): string {
  let result = BeautifySubjectName(input).trim();
  if (new Str(result).Contains("(")) {
    result = result.substring(0, result.indexOf("(")).trim();
  }
  return result
    .split(" ")
    .map((word) => {
      switch (word.toLowerCase()) {
        case "i":
          return "1";
        case "ii":
          return "2";
        default:
          return word;
      }
    })
    .map((word) => (IsNonWhiteSpaceSymbols(word[0]) ? word[0] : ""))
    .join("");

  function IsNonWhiteSpaceSymbols(char: string): boolean {
    return char !== " " && new Str(char).IsAlphaNumeric();
  }
}