// -----------------------------------------
// SoundScribe (TM) and related software.
// 
// Copyright (C) 2007-2011 Vannatech
// http://www.vannatech.com
// All rights reserved.
// 
// This source code is subject to the MIT License.
// http://www.opensource.org/licenses/mit-license.php
//
// 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;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using Vannatech.CoreAudio.Constants;
using Vannatech.CoreAudio.Enumerations;
using Vannatech.CoreAudio.Externals;
using Vannatech.CoreAudio.Interfaces;

namespace CoreAudioTests.Common
{
	/// <summary>
	/// Test manager used to run tests within the context of a AudioClientService object.
	/// </summary>
	/// <typeparam name="T">The interface type.</typeparam>
	public class ServiceTestManager<T> : TestManager<T>
	{
		/// <summary>
		/// Creats a new test manager instance.
		/// </summary>
		/// <typeparam name="T">The interface type.</typeparam>
		/// <param name="comIId">The COM IID of the interface.</param>
		/// <returns>A new service test manager instance.</returns>
		public static ServiceTestManager<T> Create(string comIId)
		{
			return new ServiceTestManager<T>(TestUtilities.CreateAudioClientServiceCollection<T>(comIId));
		}

		/// <summary>
		/// Creats a new test manager instance.
		/// </summary>
		/// <typeparam name="T">The interface type.</typeparam>
		/// <param name="comIId">The COM IID of the interface.</param>
		/// <param name="exclusiveMode">A value indicating whether or not to use exclusive mode.</param>
		/// <returns>A new service test manager instance.</returns>
		public static ServiceTestManager<T> Create(string comIId, bool exclusiveMode)
		{
			return new ServiceTestManager<T>(TestUtilities.CreateAudioClientServiceCollection<T>(comIId, exclusiveMode));
		}

		/// <summary>
		/// Creats a new test manager instance.
		/// </summary>
		/// <typeparam name="T">The interface type.</typeparam>
		/// <param name="comIId">The COM IID of the interface.</param>
		/// <param name="exclusiveMode">A value indicating whether or not to use exclusive mode.</param>
		/// <param name="streamFlags">The stream flags to use during initialization.</param>
		/// <returns>A new service test manager instance.</returns>
		public static ServiceTestManager<T> Create(string comIId, bool exclusiveMode, UInt32 streamFlags)
		{
			return new ServiceTestManager<T>(TestUtilities.CreateAudioClientServiceCollection<T>(comIId, exclusiveMode, streamFlags));
		}

		/// <summary>
        /// A list of audio client service objects to test against.
		/// </summary>
        protected IEnumerable<AudioClientService<T>> Items
        {
            get;
            set;
        }

		/// <summary>
		/// Indicates whether or not to start the audio client before running a test.
		/// </summary>
		public bool AutoStartClient
		{
			get;
			set;
		}

		/// <summary>
		/// Creates a new instance of the class.
		/// </summary>
		/// <param name="items">A list of device activations to use.</param>
		public ServiceTestManager(IEnumerable<AudioClientService<T>> items)
		{
			Items = items;
		}

		/// <summary>
		/// Runs the tests.
		/// </summary>
		protected override void OnRun()
		{
			var isTested = false;

			foreach (var i in Items)
			{
				try
				{
					var isRunning = false;

					if (AutoStartClient)
					{
						var startResult = i.AudioClient.Start();
						if (startResult != 0) continue;

						// Slight delay is required.
						System.Threading.Thread.Sleep(100);
						isRunning = true;
					}

					OnTestReady(i.ServiceInterface);

					if (isRunning) i.AudioClient.Stop();
					isTested = true;
				}
				finally
				{
					EnsureDisposal(i);
				}
			}

			if (!isTested) Assert.Inconclusive("No valid services were found to test against.");
		}
	}
}