// Copyright (c) 2020 Sergey Ivonchik
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
// OR OTHER DEALINGS IN THE SOFTWARE.

using System.Collections.Generic;
using System.Threading;
using Httx.Requests.Extensions;

namespace Httx.Requests.Decorators {
  public class Cancel : BaseRequest {
    private readonly CancellationToken currentToken;

    public Cancel(IRequest next, CancellationToken token) : base(next) {
      currentToken = token;
    }

    public override IEnumerable<KeyValuePair<string, object>> Headers =>
        new Dictionary<string, object> { [InternalHeaders.CancelToken] = currentToken };
  }

  public static class CancelFluentExtensions {
    public static IRequest Cancel(this IRequest request, CancellationToken token) => new Cancel(request, token);
  }
}