// Copyright (c) 2024, the gRPC project authors. Please see the AUTHORS file
// for details. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

import 'package:grpc/grpc.dart';
import 'package:grpc/src/client/call.dart';
import 'package:test/test.dart';

import '../src/client_utils.dart';

void main() {
  const dummyValue = 0;
  const cancelDurationMillis = 300;

  late ClientHarness harness;

  setUp(() {
    harness = ClientHarness()..setUp();
  });

  tearDown(() {
    harness.tearDown();
  });

  test('WebCallOptions mergeWith CallOptions returns WebCallOptions', () {
    final options1 = WebCallOptions(
      bypassCorsPreflight: true,
      withCredentials: true,
    );
    final metadata = {'test': '42'};
    final options2 = CallOptions(metadata: metadata);
    final mergedOptions1 = options1.mergedWith(options2) as WebCallOptions;
    final mergedOptions2 = options2.mergedWith(options1) as WebCallOptions;

    expect(mergedOptions1.metadata, metadata);
    expect(mergedOptions1.bypassCorsPreflight, true);
    expect(mergedOptions1.withCredentials, true);

    expect(mergedOptions2.metadata, metadata);
    expect(mergedOptions2.bypassCorsPreflight, true);
    expect(mergedOptions2.withCredentials, true);
  });

  test('Cancelling a call correctly complete headers future', () async {
    final clientCall = harness.client.unary(dummyValue);

    Future.delayed(
      Duration(milliseconds: cancelDurationMillis),
    ).then((_) => clientCall.cancel());

    expect(await clientCall.headers, isEmpty);

    await expectLater(
      clientCall,
      throwsA(
        isA<GrpcError>().having(
          (e) => e.codeName,
          'Test codename',
          contains('CANCELLED'),
        ),
      ),
    );
  });

  test('Cancelling a call correctly complete trailers futures', () async {
    final clientCall = harness.client.unary(dummyValue);

    Future.delayed(Duration(milliseconds: cancelDurationMillis)).then((_) {
      clientCall.cancel();
    });

    expect(await clientCall.trailers, isEmpty);

    await expectLater(
      clientCall,
      throwsA(
        isA<GrpcError>().having(
          (e) => e.codeName,
          'Test codename',
          contains('CANCELLED'),
        ),
      ),
    );
  });
}