cityssm/unleet

import { translationSymbols } from "./translations.js";


const whitespaceCharactersList = [
  " ",
  String.fromCodePoint(160),
  String.fromCodePoint(8201),
  String.fromCodePoint(8194),
  String.fromCodePoint(8195)
];
export const whitespaceCharactersRegex = new RegExp("[" + whitespaceCharactersList.join("") + "]", "g");


export const isLetter = (potentialLetter: string): boolean => {
  if ("abcdefghijklmnopqrstuvwxyz".includes(potentialLetter)) {
    return true;
  }
  return false;
};


export const indiciesOf = (sourceString: string, searchString: string): number[] => {

  const indicies: number[] = [];

  for (let index = 0; index < sourceString.length - searchString.length; index += 1) {

    if (sourceString.slice(index, searchString.length + index) === searchString) {
      indicies.push(index);
    }
  }

  return indicies;
};


export const isPotentialLeet = (potentialLeetString: string): boolean => {

  for (const leetSymbol of translationSymbols) {

    if (isLetter(leetSymbol)) {
      continue;
    }

    if (potentialLeetString.includes(leetSymbol)) {
      return true;
    }
  }

  return false;
};


export const combineStringArrays = (stringArrays: string[][]): string[] => {

  if (stringArrays.length <= 1) {
    return stringArrays[0];
  }

  const array1 = stringArrays[0];
  const array2 = stringArrays[1];

  const newArray: string[] = [];

  for (const value1 of array1) {
    for (const value2 of array2) {
      newArray.push(value1 + " " +  value2);
    }
  }

  return combineStringArrays([newArray, ...stringArrays.slice(2)]);
};