initial

lib/controllers/last_synced_controller.dart

@@ -0,0 +1,12 @@
+import "package:riverpod/riverpod.dart";
+
+class LastSyncedController extends Notifier<String?> {
+  @override
+  String? build() => null;
+
+  void set(String value) => state = value;
+
+  static final provider = NotifierProvider<LastSyncedController, String?>(
+    LastSyncedController.new,
+  );
+}

lib/helpers/api_helper.dart

@@ -1,12 +1,14 @@
 import "dart:convert";
 import "dart:io";
 import "package:markdown/markdown.dart";
+import "package:nexusbot/controllers/last_synced_controller.dart";
 import "package:nexusbot/controllers/login_controller.dart";
 import "package:nexusbot/controllers/settings_controller.dart";
 import "package:nexusbot/models/registration.dart";
 import "package:shelf/shelf.dart";
 import "package:http/http.dart" as http;
 import "package:riverpod/riverpod.dart";
+import "package:matrix/matrix.dart";
 
 class ApiHelper {
   final Ref ref;
@@ -86,12 +88,35 @@ class ApiHelper {
     return json.decode(response.body)["event_id"];
   }
 
+  Future<String> listen() async {
+    final settings = ref.watch(SettingsController.provider)!;
+    final response = await http.get(
+      settings.homeserver.replace(
+        path: "_matrix/client/v3/sync",
+        queryParameters: {
+          "timeout": "30000",
+          if (ref.watch(LastSyncedController.provider) != null case final since)
+            "since": since,
+        },
+      ),
+      headers: await getHeaders(),
+    );
+
+    if (response.statusCode != 200) {
+      throw Exception("Sync failed: ${response.body}");
+    }
+
+    final data = json.decode(response);
+  }
+
   Future<Response> register(Request request) async {
     final settings = ref.read(SettingsController.provider)!;
     final registration = Registration.fromJson(
       json.decode(await request.readAsString()),
     );
 
+    Login
+
     final event = await sendMessage("""# Registration request
 - Username: `${registration.username}`
 - Email: `${registration.email}`""", room: settings.adminRoom);