mass migrate to adaptive sheets

lib/widgets/join_sheet.dart

@@ -0,0 +1,62 @@
+import "package:material_ui/material_ui.dart";
+import "package:nexus/helpers/extensions/show_adaptive_sheet.dart";
+import "package:nexus/widgets/sheet_layout.dart";
+import "package:flutter_hooks/flutter_hooks.dart";
+import "package:hooks_riverpod/hooks_riverpod.dart";
+import "package:nexus/controllers/room_summary.dart";
+import "package:nexus/helpers/extensions/get_link_info.dart";
+import "package:nexus/widgets/room_summary_sheet.dart";
+
+class const JoinSheet(final WidgetRef ref, {super.key}) extends HookWidget {
+  @override
+  Widget build(BuildContext context) {
+    final roomAlias = useTextEditingController();
+
+    Future<void> onJoin() async {
+      Navigator.of(context).pop();
+
+      final linkInfo = roomAlias.text.linkInfo;
+      final via = linkInfo?.via ?? const .empty();
+      final roomIdOrAlias = linkInfo?.identifier ?? roomAlias.text;
+
+      context.showAdaptiveSheet(
+        (context) => Consumer(
+          builder: (context, ref, _) => switch (ref.watch(
+            RoomSummaryController.provider(
+              .new(roomIdOrAlias: roomIdOrAlias, via: via),
+            ),
+          )) {
+            AsyncData(:final value) => RoomSummarySheet(value, via: via),
+            AsyncError _ || AsyncLoading _ => RoomSummarySheet(
+              .new(roomId: roomIdOrAlias),
+              via: via,
+            ),
+          },
+        ),
+      );
+    }
+
+    return SheetLayout(
+      title: Text("Join a Room"),
+      actions: [
+        TextButton(onPressed: Navigator.of(context).pop, child: Text("Cancel")),
+        TextButton(onPressed: onJoin, child: Text("Join")),
+      ],
+      children: [
+        Column(
+          mainAxisSize: .min,
+          crossAxisAlignment: .start,
+          children: [
+            Text("Enter the room alias, Matrix URI, or Matrix.to link."),
+            SizedBox(height: 12),
+            TextField(
+              controller: roomAlias,
+              decoration: .new(hintText: "#room:server.name"),
+              onEditingComplete: onJoin,
+            ),
+          ],
+        ),
+      ],
+    );
+  }
+}