F95API/app/scripts/urls-helper.js

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