﻿// Copyright 2015 Renaud Paquay 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.

using System;
using System.Threading.Tasks;
using mtsuite.shared.Utils;

namespace mtsuite.shared.Tasks {
  public class DefaultTask<T> : DefaultTask, ITask<T> {
    public DefaultTask(Task<T> task)
      : base(task) {
    }

    public Task<T> TypedTask {
      get { return (Task<T>)Task; }
    }

    public T Result {
      get { return TypedTask.Result; }
    }

    public ITask ContinueWith(Action<ITask<T>> continuation) {
      return Wrap(TypedTask.ContinueWith(t => continuation(this)));
    }

    public ITask<TNewResult> ContinueWith<TNewResult>(Func<ITask<T>, TNewResult> continuation) {
      return Wrap(TypedTask.ContinueWith(t => continuation(this)));
    }

    public ITask Then(Func<ITask<T>, ITask> taskFactory) {
      return Wrap(TypedTask.ContinueWithTask(t => Unwrap(taskFactory(this))));
    }

    public ITask<TNewResult> Then<TNewResult>(Func<ITask<T>, ITask<TNewResult>> taskFactory) {
      return Wrap(TypedTask.ContinueWithTask(t => Unwrap(taskFactory(this))));
    }
  }
}