1 files changed, 39 insertions, 0 deletions
diff --git a/browser/components/newtab/content-src/asrouter/templates/SendToDeviceSnippet/isEmailOrPhoneNumber.js b/browser/components/newtab/content-src/asrouter/templates/SendToDeviceSnippet/isEmailOrPhoneNumber.js
new file mode 100644
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+++ b/browser/components/newtab/content-src/asrouter/templates/SendToDeviceSnippet/isEmailOrPhoneNumber.js
@@ -0,0 +1,39 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/**
+ * Checks if a given string is an email or phone number or neither
+ * @param {string} val The user input
+ * @param {ASRMessageContent} content .content property on ASR message
+ * @returns {"email"|"phone"|""} The type of the input
+ */
+export function isEmailOrPhoneNumber(val, content) {
+  const { locale } = content;
+  // http://emailregex.com/
+  const email_re =
+    /^(([^<>()[\]\\.,;:\s@"]+(\.[^<>()[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
+  const check_email = email_re.test(val);
+  let check_phone; // depends on locale
+  switch (locale) {
+    case "en-US":
+    case "en-CA":
+      // allow 10-11 digits in case user wants to enter country code
+      check_phone = val.length >= 10 && val.length <= 11 && !isNaN(val);
+      break;
+    case "de":
+      // allow between 2 and 12 digits for german phone numbers
+      check_phone = val.length >= 2 && val.length <= 12 && !isNaN(val);
+      break;
+    // this case should never be hit, but good to have a fallback just in case
+    default:
+      check_phone = !isNaN(val);
+      break;
+  }
+  if (check_email) {
+    return "email";
+  } else if (check_phone) {
+    return "phone";
+  }
+  return "";
+}