add invite support

Closes #82

lib/widgets/invites_list.dart

@@ -1,9 +1,17 @@
-import "package:flutter_riverpod/flutter_riverpod.dart";
+import "package:flutter_hooks/flutter_hooks.dart";
+import "package:hooks_riverpod/hooks_riverpod.dart";
 import "package:material_ui/material_ui.dart";
+import "package:nexus/controllers/invites.dart";
+import "package:nexus/helpers/extensions/get_localpart.dart";
+import "package:nexus/main.dart";
+import "package:nexus/models/content/create.dart";
 import "package:nexus/models/nav_page.dart";
+import "package:nexus/models/room_summary.dart";
+import "package:nexus/widgets/avatar_or_hash.dart";
+import "package:nexus/widgets/room_summary_dialog.dart";
 
 class const InvitesList({super.key})
-    extends StatelessWidget
+    extends HookConsumerWidget
     implements NavPage {
   @override
   String get title => "Invites";
@@ -11,12 +19,117 @@ class const InvitesList({super.key})
   @override
   IconData get icon => Icons.inbox;
 
-  // TODO: Show notification badge here
   @override
-  Future<int>? badgeBuilder(WidgetRef ref) => null;
+  int? badgeCount(WidgetRef ref) => switch (ref.watch(
+    InvitesController.provider.select((invites) => invites.length),
+  )) {
+    0 => null,
+    final count => count,
+  };
 
   @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final invites = ref.watch(InvitesController.provider);
+    final decliningAll = useState(false);
+
+    Future<void> declineAll() async {
+      final confirmed = await showDialog<bool>(
+        context: context,
+        builder: (context) => AlertDialog(
+          title: const Text("Decline All Invites"),
+          content: Text(
+            "Are you sure you want to decline all ${invites.length} invites?",
+          ),
+          actions: [
+            TextButton(
+              onPressed: () => Navigator.of(context).pop(false),
+              child: const Text("Cancel"),
+            ),
+            TextButton(
+              onPressed: () => Navigator.of(context).pop(true),
+              child: const Text("Decline All"),
+            ),
+          ],
+        ),
+      );
+      if (confirmed != true) return;
+
+      decliningAll.value = true;
+      await ref
+          .read(InvitesController.provider.notifier)
+          .declineAll()
+          .onError(showError);
+      if (context.mounted) decliningAll.value = false;
+    }
+
+    return Scaffold(
+      backgroundColor: Colors.transparent,
+      floatingActionButton: invites.isEmpty
+          ? null
+          : FloatingActionButton.extended(
+              onPressed: decliningAll.value ? null : declineAll,
+              icon: decliningAll.value
+                  ? const SizedBox.square(
+                      dimension: 24,
+                      child: CircularProgressIndicator(),
+                    )
+                  : const Icon(Icons.clear_all),
+              label: const Text("Decline all"),
+            ),
+      body: invites.isEmpty
+          ? Center(
+              child: Text(
+                "No invites",
+                style: Theme.of(context).textTheme.headlineMedium,
+              ),
+            )
+          : ListView(
+              // Leave room for the FAB under the last invite
+              padding: const .only(left: 8, top: 8, right: 8, bottom: 88),
+              children: invites.map(InviteCard.new).toList(),
+            ),
+    );
+  }
+}
+
+class const InviteCard(final RoomSummary invite, {super.key})
+    extends StatelessWidget {
+  @override
   Widget build(BuildContext context) {
-    return const Placeholder();
+    final name = invite.name ?? invite.canonicalAlias ?? invite.roomId;
+    final inviterName =
+        invite.inviterProfile?.displayName ?? invite.invitedBy?.localpart;
+
+    return Card(
+      clipBehavior: .antiAlias,
+      child: ListTile(
+        onTap: () => showDialog(
+          context: context,
+          builder: (_) => RoomSummaryDialog(invite),
+        ),
+        leading: AvatarOrHash(
+          invite.avatarUrl,
+          name,
+          dimension: 40,
+          fallback: invite.isDirect
+              ? null
+              : Icon(
+                  invite.roomType == RoomType.space
+                      ? Icons.workspaces
+                      : Icons.numbers,
+                ),
+        ),
+        title: Text(name, maxLines: 1, overflow: .ellipsis),
+        subtitle: Text(
+          [
+            if (inviterName != null)
+              "${invite.isDirect ? "Direct message from" : "Invited by"} $inviterName",
+            ?invite.topic,
+          ].join("\n"),
+          maxLines: 2,
+          overflow: .ellipsis,
+        ),
+      ),
+    );
   }
 }