73 lines
2.0 KiB
JavaScript
73 lines
2.0 KiB
JavaScript
"use strict";
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// Public modules from npm
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const ky = require("ky-universal").create({
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throwHttpErrors: false,
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});
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// Modules from file
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const { F95_BASE_URL } = require("./constants/url.js");
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/**
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* @protected
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* Check if the url belongs to the domain of the F95 platform.
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* @param {String} url URL to check
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* @returns {Boolean} true if the url belongs to the domain, false otherwise
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*/
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module.exports.isF95URL = function (url) {
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if (url.toString().startsWith(F95_BASE_URL)) return true;
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else return false;
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};
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/**
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* @protected
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* Checks if the string passed by parameter has a properly formatted and valid path to a URL.
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* @param {String} url String to check for correctness
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* @returns {Boolean} true if the string is a valid URL, false otherwise
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*/
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module.exports.isStringAValidURL = function (url) {
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try {
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new URL(url); // skipcq: JS-0078
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return true;
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} catch (err) {
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return false;
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}
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};
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/**
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* @protected
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* Check if a particular URL is valid and reachable on the web.
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* @param {String} url URL to check
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* @param {Boolean} checkRedirect If true, the function will consider redirects a violation and return false
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* @returns {Promise<Boolean>} true if the URL exists, false otherwise
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*/
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module.exports.urlExists = async function (url, checkRedirect) {
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if (!exports.isStringAValidURL(url)) {
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return false;
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}
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const response = await ky.head(url);
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let valid = response !== undefined && !/4\d\d/.test(response.status);
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if (!valid) return false;
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if (checkRedirect) {
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const redirectUrl = await exports.getUrlRedirect(url);
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if (redirectUrl === url) valid = true;
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else valid = false;
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}
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return valid;
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};
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/**
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* @protected
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* Check if the URL has a redirect to another page.
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* @param {String} url URL to check for redirect
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* @returns {Promise<String>} Redirect URL or the passed URL
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*/
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module.exports.getUrlRedirect = async function (url) {
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const response = await ky.head(url);
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return response.url;
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};
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