Fix user id extraction in dart client.

client/trailbase-dart/lib/src/client.dart

@@ -15,7 +15,7 @@ class User {
   });
 
   User.fromJson(Map<String, dynamic> json)
-      : id = json['id'],
+      : id = json['sub'],
         email = json['email'];
 
   @override
@@ -40,6 +40,19 @@ class Tokens {
         'csrf_token': csrf,
       };
 
+  bool get valid => JwtDecoder.decode(auth).isNotEmpty;
+
+  @override
+  bool operator ==(Object other) {
+    return other is Tokens &&
+        auth == other.auth &&
+        refresh == other.refresh &&
+        csrf == other.csrf;
+  }
+
+  @override
+  int get hashCode => Object.hash(auth, refresh, csrf);
+
   @override
   String toString() => 'Tokens(${auth}, ${refresh}, ${csrf})';
 }
@@ -352,7 +365,7 @@ class Client {
   User? user() {
     final authToken = tokens()?.auth;
     if (authToken != null) {
-      return User.fromJson(JwtDecoder.decode(authToken)['user']);
+      return User.fromJson(JwtDecoder.decode(authToken));
     }
     return null;
   }

client/trailbase-dart/test/trailbase_test.dart

@@ -79,13 +79,26 @@ Future<void> main() async {
 
       final oldTokens = client.tokens();
       expect(oldTokens, isNotNull);
+      expect(oldTokens!.valid, isTrue);
+
+      final user = client.user()!;
+      expect(user.id, isNot(equals('')));
+      expect(user.email, equals('admin@localhost'));
+
+      await client.logout();
+      expect(client.tokens(), isNull);
 
       // We need to wait a little to push the expiry time in seconds to avoid just getting the same token minted again.
       await Future.delayed(Duration(milliseconds: 1500));
 
+      final newTokens = await client.login('admin@localhost', 'secret');
+      expect(newTokens, isNotNull);
+      expect(newTokens.valid, isTrue);
+
+      expect(newTokens, isNot(equals(oldTokens)));
+
       await client.refreshAuthToken();
-      final newTokens = client.tokens();
-      expect(newTokens, isNot(equals(oldTokens!.auth)));
+      expect(newTokens, equals(client.tokens()));
     });
 
     test('records', () async {