philippebeck/servidio

// ! ******************** GETTERS ********************

/**
 * ? GET CATEGORIES
 * * Returns an array of unique categories from the given items
 * @param {Array} items - An array of objects representing items with a 'cat' property
 * @return {Array} An array of unique cat categories from the given items
 */
export function getCats(items) {

  return [...new Set(items.map(item => item.cat))];
}

/**
 * ? GET ITEM NAME
 * * Returns the name of the item with the given id from the provided array of items
 * @param {string} id - The id of the item to search for
 * @param {Array} items - An array of items to search through
 * @return {string|boolean} The name of the item with the given id if found, false otherwise
 */
export function getItemName(id, items) {
  const item = items.find(item => item.id === id);

  return item ? item.name : false;
}

/**
 * ? GET ITEMS BY CATEGORY
 * * Groups an array of items by category & sorts each category's item list by id or name
 * @param {Array} items - The array of items to group
 * @param {string} [sortBy="id"] - The property to sort the items by
 * @return {Object} An object where each key is a category & its value is the array of items belonging to that category
 */
export function getItemsByCat(items, sortBy = "id") {
  const itemsByCat = {};

  for (const item of items) {
    const cat       = item.cat;
    itemsByCat[cat] = itemsByCat[cat] ?? [];

    itemsByCat[cat].push(item);
  }

  for (const cat in itemsByCat) {
    itemsByCat[cat].sort((a, b) => sortBy === "id"
    ? a.id - b.id
    : a.name.localeCompare(b.name));
  }

  return itemsByCat;
}