Export new url validation functions

web/utils/urls.ts

@@ -1,9 +1,14 @@
 // to use with <input type="url"> fields, as the default pattern only checks for `:`,
 export const DEFAULT_TEXTFIELD_URL_PATTERN = 'https?://.*';
 
-export default function isValidUrl(url: string): boolean {
-  const validProtocols = ['http:', 'https:'];
-
+/**
+ * Determines if a URL is valid
+ * @param {string} url - A URL to validate.
+ * @param {string[]} validProtocols - An array of valid protocols. Defaults to web.
+ * @returns {boolean} - True if the URI is valid, false otherwise.
+ */
+export function isValidUrl(url: string, validProtocols: string[] = ['http', 'https']): boolean {
+  console.log(url, validProtocols);
   try {
     const validationObject = new URL(url);
     if (
@@ -19,3 +24,60 @@ export default function isValidUrl(url: string): boolean {
 
   return true;
 }
+
+/**
+ * Determines if an account is valid by simply checking for a protocol, username
+ * and server, delimited by a colon. For example: @username:example.com
+ * @param {string} account - An account to validate.
+ * @param {string} protocol - The protocol we expect the account to be using.
+ * @returns {boolean} - True if the account is valid, false otherwise.
+ */
+export function isValidAccount(account: string, protocol: string): boolean {
+  if (account.startsWith('@')) {
+    // eslint-disable-next-line no-param-reassign
+    account = account.slice(1);
+  }
+
+  const components = account.split(/:|@/);
+  const [service, user, host] = components;
+
+  console.log({ account, protocol, service, user, host });
+  if (service !== protocol) {
+    return false;
+  }
+
+  if (components.length !== 3 || !service || !user || !host) {
+    return false;
+  }
+
+  return true;
+}
+
+/**
+ * Determines if an account is valid by simply checking for a protocol, username
+ * and server, delimited by a colon. For example: @username:example.com
+ * @param {string} account - An account to validate.
+ * @returns {boolean} - True if the account is valid, false otherwise.
+ */
+export function isValidMatrixAccount(account: string): boolean {
+  if (account.startsWith('matrix:')) {
+    // eslint-disable-next-line no-param-reassign
+    account = account.slice(7);
+  } else {
+    return false;
+  }
+
+  if (account.startsWith('@')) {
+    // eslint-disable-next-line no-param-reassign
+    account = account.slice(1);
+  }
+
+  const components = account.split(':');
+  const [user, host] = components;
+
+  if (components.length !== 2 || !user || !host) {
+    return false;
+  }
+
+  return true;
+}