Helper methods

helpers.js

/**
 * Helper helper function
 * Generate a title case.
 * @param {string} string
 */
const titleCase = string => {
  let splitStr = string.toLowerCase().split(" ");
  for (let i = 0; i < splitStr.length; i++) {
    // You do not need to check if i is larger than splitStr length, as your for does that for you
    // Assign it back to the array
    splitStr[i] =
      splitStr[i].charAt(0).toUpperCase() + splitStr[i].substring(1);
  }
  // Directly return the joined string
  return splitStr.join(" ");
};

/**
 * Helper helper function
 * Remove invalid characters
 * @param {string} string
 */
const removeInvalidCharacter = string => {
  return string.replace(/[^a-zA-Z0-9\- ]/g, "");
};

const makeId = length => {
  let result = "";
  const characters =
    "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
  const charactersLength = characters.length;
  for (var i = 0; i < length; i++) {
    result += characters.charAt(Math.floor(Math.random() * charactersLength));
  }
  return result.toLowerCase();
};

const processShopName = string => {
  const str = string.trim();
  return titleCase(removeInvalidCharacter(str));
};

const processShopUrl = string => {
  const str = string
    .trim()
    .toLowerCase()
    .replace(/ /g, "-");
  return removeInvalidCharacter(str);
};

module.exports = { processShopName, processShopUrl, makeId };