95 lines
2.1 KiB
TypeScript
95 lines
2.1 KiB
TypeScript
import env from "../env";
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import { parseDomain } from "./domains";
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/**
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* Prepends the CDN url to the given path (If a CDN is configured).
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*
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* @param path The path to prepend the CDN url to.
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* @returns The path with the CDN url prepended.
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*/
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export function cdnPath(path: string): string {
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return `${env.CDN_URL}${path}`;
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}
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/**
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* Returns true if the given string is a link to inside the application.
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*
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* Important Note: If this is called server-side, it will always return false.
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* The reason this is in a shared util is because it's used in an editor plugin
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* which is also in the shared code
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*
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* @param url The url to check.
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* @returns True if the url is internal, false otherwise.
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*/
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export function isInternalUrl(href: string) {
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// empty strings are never internal
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if (href === "") {
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return false;
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}
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// relative paths are always internal
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if (href[0] === "/") {
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return true;
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}
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const outline =
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typeof window !== "undefined"
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? parseDomain(window.location.href)
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: undefined;
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const domain = parseDomain(href);
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return outline?.host === domain.host;
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}
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/**
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* Returns true if the given string is a url.
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*
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* @param url The url to check.
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* @returns True if a url, false otherwise.
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*/
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export function isUrl(text: string) {
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if (text.match(/\n/)) {
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return false;
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}
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try {
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const url = new URL(text);
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return url.hostname !== "";
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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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* Returns true if the given string is a link to outside the application.
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*
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* @param url The url to check.
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* @returns True if the url is external, false otherwise.
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*/
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export function isExternalUrl(url: string) {
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return !isInternalUrl(url);
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}
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/**
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* For use in the editor, this function will ensure that a url is
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* potentially valid, and filter out unsupported and malicious protocols.
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*
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* @param url The url to sanitize
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* @returns The sanitized href
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*/
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export function sanitizeUrl(url: string | null | undefined) {
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if (!url) {
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return undefined;
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}
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if (
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!isUrl(url) &&
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!url.startsWith("/") &&
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!url.startsWith("#") &&
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!url.startsWith("mailto:")
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) {
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return `https://${url}`;
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}
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return url;
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}
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