feat(http): [WIP] implements middleware system

2022-06-23 17:07:04 +02:00
parent ea4a30ca00
commit 58d3b70bee
12 changed files with 820 additions and 0 deletions
@@ -0,0 +1,77 @@
+// Copyright (C) 2022 WYATT GROUP
+// Please see the AUTHORS file for details.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+import 'package:http/http.dart';
+import 'package:wyatt_http_client/src/middleware_client.dart';
+import 'package:wyatt_http_client/src/models/middleware_request.dart';
+import 'package:wyatt_http_client/src/models/middleware_response.dart';
+
+class Middleware {
+  Middleware? child;
+
+  MiddlewareClient? _client;
+
+  Middleware({
+    this.child,
+  });
+
+  Middleware._({
+    this.child,
+    MiddlewareClient? client,
+  }) : _client = client;
+
+  String getName() => 'Middleware';
+
+  void setClient(MiddlewareClient? client) {
+    _client = client;
+    child?.setClient(client);
+  }
+
+  Client? getClient() {
+    return _client?.inner;
+  }
+
+  Middleware deepCopy() {
+    if (child != null) {
+      return Middleware._(child: child?.deepCopy(), client: _client);
+    } else {
+      return Middleware._(client: _client);
+    }
+  }
+
+  void addChild(Middleware middleware) {
+    if (child != null) {
+      child?.addChild(middleware);
+    } else {
+      child = middleware;
+    }
+  }
+
+  MiddlewareRequest onRequest(
+    MiddlewareRequest request,
+  ) {
+    return child?.onRequest(request) ?? request;
+  }
+
+  MiddlewareResponse onResponse(MiddlewareResponse response) {
+    return child?.onResponse(response) ?? response;
+  }
+
+  @override
+  String toString() {
+    return getName();
+  }
+}