import 'package:http/http.dart' as http;
import 'package:http/io_client.dart';

import '../../model/endpoint_data.dart';
import '../errors/network_exception.dart';
import 'demo_mode.dart';

/// Demo sessions carry made-up credentials. Every request they sent to the
/// real Nextcloud would count as a failed login there and, in bulk, trip the
/// server's brute-force throttle for the whole IP (HTTP 429 for everyone
/// behind it). Installed app-wide via [http.runWithClient].
class DemoHttpClient extends http.BaseClient {
  final http.Client _inner = IOClient();

  @override
  Future<http.StreamedResponse> send(http.BaseRequest request) {
    if (DemoMode.active && isNextcloudHost(request.url)) {
      return Future.error(NetworkException.demoBlocked(request.url));
    }
    return _inner.send(request);
  }

  @override
  void close() => _inner.close();

  static bool isNextcloudHost(Uri url) =>
      url.host == EndpointData().nextcloud().domain;
}