feat: Open alias in discover page

lib/components/default_app_bar_search_field.dart

@@ -80,6 +80,7 @@ class _DefaultAppBarSearchFieldState extends State<DefaultAppBarSearchField> {
                     icon: Icon(Icons.backspace_outlined),
                     onPressed: () {
                       _searchController.clear();
+                      widget.onChanged?.call('');
                       _focusNode.unfocus();
                     },
                   )

lib/utils/url_launcher.dart

@@ -5,6 +5,7 @@ import 'package:fluffychat/components/matrix.dart';
 import 'package:fluffychat/app_config.dart';
 import 'package:fluffychat/utils/app_route.dart';
 import 'package:fluffychat/views/chat.dart';
+import 'package:fluffychat/views/discover_view.dart';
 import 'package:flutter/material.dart';
 import 'package:url_launcher/url_launcher.dart';
 import 'matrix_identifier_string_extension.dart';
@@ -78,14 +79,8 @@ class UrlLauncher {
         );
         return;
       }
-      if (roomIdOrAlias[0] == '!') {
+      if (roomIdOrAlias.sigil == '!') {
         roomId = roomIdOrAlias;
-      }
-      if (await showOkCancelAlertDialog(
-            context: context,
-            title: 'Join room $roomIdOrAlias',
-          ) ==
-          OkCancelResult.ok) {
         final response =
             await SimpleDialogs(context).tryRequestWithLoadingDialog(
           matrix.client.joinRoomOrAlias(
@@ -103,8 +98,15 @@ class UrlLauncher {
               context, ChatView(response, scrollToEventId: event)),
           (r) => r.isFirst,
         );
-      }
-    } else if (identifier[0] == '@') {
+      } else if (identifier.sigil == '#') {
+        await Navigator.of(context).pushAndRemoveUntil(
+          AppRoute.defaultRoute(
+            context,
+            DiscoverView(alias: identifier),
+          ),
+          (r) => r.isFirst,
+        );
+      } else if (identifier.sigil == '@') {
         final user = User(
           identifier,
           room: Room(id: '', client: matrix.client),
@@ -139,3 +141,4 @@ class UrlLauncher {
       }
     }
   }
+}

lib/views/discover_view.dart

@@ -15,16 +15,22 @@ import 'package:flutter_gen/gen_l10n/l10n.dart';
 import 'empty_page.dart';
 
 class DiscoverView extends StatelessWidget {
+  final String alias;
+
+  const DiscoverView({Key key, this.alias}) : super(key: key);
   @override
   Widget build(BuildContext context) {
     return AdaptivePageLayout(
-      firstScaffold: DiscoverPage(),
+      firstScaffold: DiscoverPage(alias: alias),
       secondScaffold: EmptyPage(),
     );
   }
 }
 
 class DiscoverPage extends StatefulWidget {
+  final String alias;
+
+  const DiscoverPage({Key key, this.alias}) : super(key: key);
   @override
   _DiscoverPageState createState() => _DiscoverPageState();
 }
@@ -114,6 +120,7 @@ class _DiscoverPageState extends State<DiscoverPage> {
 
   @override
   void initState() {
+    _genericSearchTerm = widget.alias;
     _scrollController.addListener(() async {
       if (_scrollController.position.pixels > 0 && _scrolledToTop) {
         setState(() => _scrolledToTop = false);
@@ -126,8 +133,11 @@ class _DiscoverPageState extends State<DiscoverPage> {
 
   @override
   Widget build(BuildContext context) {
+    final server = _genericSearchTerm?.isValidMatrixId ?? false
+        ? _genericSearchTerm.domain
+        : _server;
     _publicRoomsResponse ??= Matrix.of(context).client.searchPublicRooms(
-          server: _server,
+          server: server,
           genericSearchTerm: _genericSearchTerm,
         );
     return Scaffold(
@@ -149,7 +159,7 @@ class _DiscoverPageState extends State<DiscoverPage> {
           if (snapshot.hasError) {
             return Center(child: Text(snapshot.error.toString()));
           }
-          if (!snapshot.hasData) {
+          if (snapshot.connectionState != ConnectionState.done) {
             return Center(child: CircularProgressIndicator());
           }
           final publicRoomsResponse = snapshot.data;