RealmInputScreen: Add ValidationError.Empty

Author: chrisbobbe

src/start/RealmInputScreen.js

@@ -25,12 +25,15 @@ type Props = $ReadOnly<{|
 |}>;
 
 enum ValidationError {
-  InvalidUrl = 0,
-  NoUseEmail = 1,
+  Empty = 0,
+  InvalidUrl = 1,
+  NoUseEmail = 2,
 }
 
 function validationErrorMsg(validationError: ValidationError): LocalizableText {
   switch (validationError) {
+    case ValidationError.Empty:
+      return 'Please enter a URL.';
     case ValidationError.InvalidUrl:
       return 'Please enter a valid URL.';
     case ValidationError.NoUseEmail:
@@ -45,6 +48,10 @@ type MaybeParsedInput =
 const tryParseInput = (realmInputValue: string): MaybeParsedInput => {
   const trimmedInputValue = realmInputValue.trim();
 
+  if (trimmedInputValue.length === 0) {
+    return { valid: false, error: ValidationError.Empty };
+  }
+
   const withScheme = /^https?:\/\//.test(trimmedInputValue)
     ? trimmedInputValue
     : `https://${trimmedInputValue}`;

static/translations/messages_en.json

@@ -129,6 +129,7 @@
   "Chat": "Chat",
   "Sign in with {method}": "Sign in with {method}",
   "Invalid input": "Invalid input",
+  "Please enter a URL.": "Please enter a URL.",
   "Please enter a valid URL.": "Please enter a valid URL.",
   "Please enter the server URL, not your email.": "Please enter the server URL, not your email.",
   "Wrong email or password. Try again.": "Wrong email or password. Try again.",