TF-571 Setup and get OIDC configuration

model/lib/model.dart

@@ -76,4 +76,5 @@ export 'identity/identity_request_dto.dart';
 // OIDC
 export 'oidc/response/oidc_response.dart';
 export 'oidc/response/oidc_link_dto.dart';
-export 'oidc/request/oidc_request.dart';
+export 'oidc/request/oidc_request.dart';
+export 'oidc/oidc_configuration.dart';

model/lib/oidc/oidc_configuration.dart

@@ -0,0 +1,41 @@
+
+import 'package:equatable/equatable.dart';
+
+class OIDCConfiguration with EquatableMixin {
+  static const redirectOidc = 'teammail.mobile://oauthredirect';
+  static const wellKnownOpenId = '.well-known/openid-configuration';
+
+  final String authority;
+  final String clientId;
+  final String redirectUrl = redirectOidc;
+  final List<String> scopes;
+
+  OIDCConfiguration({
+    required this.authority,
+    required this.clientId,
+    required this.scopes
+  });
+
+  factory OIDCConfiguration.initial() {
+    return OIDCConfiguration(
+        authority: 'https://auth.upn.integration-open-paas.org/auth/realms/mobile',
+        clientId: 'teammail-mobile',
+        scopes: ['openid', 'offline_access']
+    );
+  }
+
+  String get discoveryUrl {
+    if (authority.endsWith('/')) {
+      return authority + wellKnownOpenId;
+    } else {
+      return authority + '/' + wellKnownOpenId;
+    }
+  }
+
+  @override
+  List<Object?> get props => [
+    authority,
+    clientId,
+    scopes
+  ];
+}