// Copyright (c) .NET Foundation. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net.Http;
using System.Threading.Tasks;
using System.Xml.Linq;
using Microsoft.AspNetCore.Server.IntegrationTesting;
using Microsoft.AspNetCore.Server.IntegrationTesting.IIS;
using Microsoft.AspNetCore.Testing;
using Microsoft.Extensions.Logging;
using Xunit;

namespace Microsoft.AspNetCore.Server.IISIntegration.FunctionalTests
{
    public static class Helpers
    {
        public static string GetTestWebSitePath(string name)
        {
            return Path.Combine(TestPathUtilities.GetSolutionRootDirectory("IISIntegration"),"test", "WebSites", name);
        }

        public static string GetInProcessTestSitesPath() => GetTestWebSitePath("InProcessWebSite");

        public static string GetOutOfProcessTestSitesPath() => GetTestWebSitePath("OutOfProcessWebSite");
  

        public static async Task AssertStarts(IISDeploymentResult deploymentResult, string path = "/HelloWorld")
        {
            var response = await deploymentResult.HttpClient.GetAsync(path);

            var responseText = await response.Content.ReadAsStringAsync();

            Assert.Equal("Hello World", responseText);
        }

        public static async Task StressLoad(HttpClient httpClient, string path, Action<HttpResponseMessage> action)
        {
            async Task RunRequests()
            {
                var connection = new HttpClient() { BaseAddress = httpClient.BaseAddress };

                for (int j = 0; j < 10; j++)
                {
                    var response = await connection.GetAsync(path);
                    action(response);
                }
            }

            List<Task> tasks = new List<Task>();
            for (int i = 0; i < 10; i++)
            {
                tasks.Add(Task.Run(RunRequests));
            }

            await Task.WhenAll(tasks);
        }

        public static void CopyFiles(DirectoryInfo source, DirectoryInfo target, ILogger logger)
        {
            foreach (DirectoryInfo directoryInfo in source.GetDirectories())
            {
                CopyFiles(directoryInfo, target.CreateSubdirectory(directoryInfo.Name), logger);
            }
            logger.LogDebug($"Processing {target.FullName}");
            foreach (FileInfo fileInfo in source.GetFiles())
            {
                logger.LogDebug($"  Copying {fileInfo.Name}");
                var destFileName = Path.Combine(target.FullName, fileInfo.Name);
                fileInfo.CopyTo(destFileName);
            }
        }
    }
}