From 78adb13eda84fe3bb9808d8ce55ef72900425d25 Mon Sep 17 00:00:00 2001
From: Shu Chen <shu@zulip.com>
Date: Thu, 9 Nov 2023 11:25:23 +0000
Subject: [PATCH] narrow: Add ApiNarrowIsUnread

---
 lib/api/model/narrow.dart    | 8 ++++++++
 lib/model/internal_link.dart | 2 ++
 2 files changed, 10 insertions(+)

diff --git a/lib/api/model/narrow.dart b/lib/api/model/narrow.dart
index 8907c4de767..7383d382ba4 100644
--- a/lib/api/model/narrow.dart
+++ b/lib/api/model/narrow.dart
@@ -114,6 +114,14 @@ class ApiNarrowPmWith extends ApiNarrowDm {
   ApiNarrowPmWith._(super.operand, {super.negated});
 }
 
+// TODO: generalize into ApiNarrowIs
+class ApiNarrowIsUnread extends ApiNarrowElement {
+  @override String get operator => 'is';
+  @override String get operand => 'unread';
+
+  ApiNarrowIsUnread({super.negated});
+}
+
 class ApiNarrowMessageId extends ApiNarrowElement {
   @override String get operator => 'id';
 
diff --git a/lib/model/internal_link.dart b/lib/model/internal_link.dart
index 7874f989ccb..15fc0cbeb73 100644
--- a/lib/model/internal_link.dart
+++ b/lib/model/internal_link.dart
@@ -84,6 +84,8 @@ Uri narrowLink(PerAccountStore store, Narrow narrow, {int? nearMessageId}) {
         fragment.write('${element.operand.join(',')}-$suffix');
       case ApiNarrowDm():
         assert(false, 'ApiNarrowDm should have been resolved');
+      case ApiNarrowIsUnread():
+        fragment.write(element.operand.toString());
       case ApiNarrowMessageId():
         fragment.write(element.operand.toString());
     }