Finish authentication flow

lib/views/auth_web_view.dart

@@ -0,0 +1,43 @@
+import 'package:fluffychat/components/matrix.dart';
+import 'package:flutter/material.dart';
+import 'package:webview_flutter/webview_flutter.dart';
+
+class AuthWebView extends StatelessWidget {
+  final String authType;
+  final String session;
+  final Function onAuthDone;
+
+  const AuthWebView(this.authType, this.session, this.onAuthDone);
+
+  @override
+  Widget build(BuildContext context) {
+    final String url = Matrix.of(context).client.homeserver +
+        "/_matrix/client/r0/auth/$authType/fallback/web?session=$session";
+    print(url);
+    return Scaffold(
+      appBar: AppBar(
+        title: Text("Authentication"),
+        leading: IconButton(
+          icon: Icon(Icons.arrow_back),
+          onPressed: () {
+            Navigator.of(context).pop();
+            Navigator.of(context).pop();
+          },
+        ),
+        actions: <Widget>[
+          IconButton(
+            icon: Icon(Icons.check),
+            onPressed: () {
+              Navigator.of(context).pop();
+              onAuthDone();
+            },
+          )
+        ],
+      ),
+      body: WebView(
+        initialUrl: url,
+        javascriptMode: JavascriptMode.unrestricted,
+      ),
+    );
+  }
+}