@empathyco/x-components/js/utils/is-new-query.js

Empathy X Components

import { isStringEmpty } from './string.js';

/**
 * Regex for splitting a query into its words.
 *
 * @public
 */
const SPLIT_WORDS_REGEX = /[\s-]/;
/**
 * Compares two queries to know if the new one is a refined query from the previous one or a new
 * one.
 *
 * A refined query is a query which has the previous query or part of it.
 * Example:
 * - previousQuery = 'lego star'.
 * - newQuery = 'lego star wars'.
 *
 * Example:
 * - previousQuery = 'lego star wars'.
 * - newQuery = 'lego star'.
 *
 * A new query is a query which has not the previous query.
 * Example:
 * - previousQuery = 'lego star'.
 * - newQuery = 'lego wars'.
 *
 * In this case, it is changing the word set, because a word is changed by another one, so
 * this is changing the search intention.
 *
 * @param newQuery - The new query.
 * @param previousQuery - The previous query.
 *
 * @returns A boolean which flags if the query is refined or not.
 *
 * @public
 */
function isNewQuery(newQuery, previousQuery) {
    const isNewQueryEmpty = isStringEmpty(newQuery);
    const isPreviousQueryEmpty = isStringEmpty(previousQuery);
    const previousQueryWords = previousQuery.split(SPLIT_WORDS_REGEX);
    const newQueryWords = newQuery.split(SPLIT_WORDS_REGEX);
    return (!previousQueryWords.every(previousQueryWord => newQueryWords.some(newQueryWord => newQueryWord.includes(previousQueryWord) || previousQueryWord.includes(newQueryWord))) ||
        (isNewQueryEmpty && !isPreviousQueryEmpty) ||
        (!isNewQueryEmpty && isPreviousQueryEmpty));
}

export { SPLIT_WORDS_REGEX, isNewQuery };
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