feat: added authentification and redirection

lib/data/repositories/auth_repository.dart

@@ -0,0 +1,43 @@
+import 'package:flutter/foundation.dart';
+import 'package:seshat/data/services/auth_client.dart';
+import 'package:seshat/utils/result.dart';
+
+class AuthRepository extends ChangeNotifier {
+  AuthRepository({required AuthClient authClient}) : _authClient = authClient;
+
+  final AuthClient _authClient;
+
+  bool? _isAuthenticated;
+
+  Future<bool> get isLoggedIn async {
+    if (_isAuthenticated != null) {
+      return _isAuthenticated!;
+    }
+    final result = await _authClient.hasValidToken();
+    switch (result) {
+      case Ok():
+        if (result.value) {
+          return true;
+        }
+        return false;
+      case Error():
+        return false;
+    }
+  }
+
+  Future<Result<void>> login(String username, String password) async {
+    try {
+      final result = await _authClient.login(username, password);
+      switch (result) {
+        case Ok():
+          _isAuthenticated = true;
+          return Result.ok(());
+        case Error():
+          return Result.error(result.error);
+      }
+    } catch (e, stackTrace) {
+      debugPrintStack(stackTrace: stackTrace);
+      return Result.error(Exception(e));
+    }
+  }
+}

lib/data/repositories/owner_repository.dart

@@ -14,32 +14,42 @@ class OwnerRepository {
 
   final ApiClient _apiClient;
   final WebsocketClient _wsClient;
-  List<Owner>? _cachedData;
+  List<Owner>? _cachedOwners;
+
+  Future<Result<Owner>> postOwner(
+    String firstName,
+    String lastName,
+    String contact,
+  ) async {
+    return Result.ok(
+      Owner(firstName: firstName, lastName: lastName, contact: contact, id: 50),
+    );
+  }
 
   Future<Result<List<Owner>>> getOwners() async {
-    if (_cachedData == null) {
+    if (_cachedOwners == null) {
       final result = await _apiClient.getOwners();
 
       if (result is Ok<List<Owner>>) {
-        _cachedData = result.value;
+        _cachedOwners = result.value;
       }
 
       return result;
     } else {
-      return Result.ok(_cachedData!);
+      return Result.ok(_cachedOwners!);
     }
   }
 
   Stream<Owner> liveOwners() async* {
-    await for (String data in _wsClient.connect()) {
+    await for (String data in await _wsClient.connect()) {
       Map<String, dynamic> decodedData = jsonDecode(
         data,
       ).cast<Map<String, dynamic>>();
       Owner owner = Owner.fromJSON(decodedData);
-      if (_cachedData == null) {
-        getOwners();
+      if (_cachedOwners == null) {
+        await getOwners();
       } else {
-        _cachedData!.add(owner);
+        _cachedOwners!.add(owner);
         yield* Stream.value(owner);
       }
     }