Advent of Code Day Navigation Links

This adds forward and backwards links to each day's page.

Visiter le site de l'auteur pour obtenir de l'aide, poser une question, écrire un avis, ou signaler le script.

Enveloppe les lignes

// ==UserScript==
// @name            Advent of Code Day Navigation Links
// @namespace       Violentmonkey Scripts
// @match           https://adventofcode.com/*/day/*
// @grant           none
// @version         1.0
// @author          -
// @description     This adds forward and backwards links to each day's page.
// @author          josh
// @namespace       https://gitlab.com/userscript4/advent-of-code-day-nav
// @supportURL      https://gitlab.com/userscript4/advent-of-code-day-nav/-/issues
// @license         MIT
// ==/UserScript==

/**
 * Return the url of the requested day.
 * If less than 1 or greater than 25 provide a url to the overview page.
 * @param {number} day
 * @returns {string} A url to the requested day
 */
function makeURL(day) {
    if (day < 1 || day > 25) {
        return window.location.href.replace(/\/day\/.*/, '');
    }
    return window.location.href.replace(/(?<=\/day\/).*/, day);
}

/**
 * Create an anchor tag.
 * @param {number} day 
 * @param {string} text 
 * @returns {HTMLAnchorElement}
 */
function makeAnchor(day, text) {
    const anchor = document.createElement('a');
    anchor.href = makeURL(day);
    anchor.textContent = text;
    return anchor
}

/**
 * Find the title, extract the day number, replace the `---` with links.
 */
function addNavigationLinks() {
    const title = document.querySelector('article.day-desc > h2');
    const currentDay = parseInt(title.textContent.match(/(?<=Day )[0-9]+(?=:)/)[0]);
    title.textContent = title.textContent.match(/^--- (.*?) ---$/)[1];
    title.prepend(makeAnchor(currentDay - 1, '<-- '));
    title.append(makeAnchor(currentDay + 1, ' -->'));
}

addNavigationLinks();