// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.

using System;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using MQTTnet.Implementations;

namespace MQTTnet.Tests.Internal;

// ReSharper disable InconsistentNaming
[TestClass]
public class CrossPlatformSocket_Tests
{
    [TestMethod]
    public async Task Connect_Send_Receive()
    {
        var crossPlatformSocket = new CrossPlatformSocket(ProtocolType.Tcp);
        await crossPlatformSocket.ConnectAsync(new DnsEndPoint("www.github.com", 80), CancellationToken.None);

        var requestBuffer = "GET / HTTP/1.1\r\nHost: www.github.com\r\n\r\n"u8.ToArray();
        await crossPlatformSocket.SendAsync(new ArraySegment<byte>(requestBuffer), SocketFlags.None);

        var buffer = new byte[1024];
        var length = await crossPlatformSocket.ReceiveAsync(new ArraySegment<byte>(buffer), SocketFlags.None);
        crossPlatformSocket.Dispose();

        var responseText = Encoding.UTF8.GetString(buffer, 0, length);

        Assert.Contains("HTTP/1.1", responseText);
    }

    [TestMethod]
    public Task Try_Connect_Invalid_Host()
    {
        return Assert.ThrowsExactlyAsync<OperationCanceledException>(async () =>
        {
            var crossPlatformSocket = new CrossPlatformSocket(ProtocolType.Tcp);

            var cancellationToken = new CancellationTokenSource(TimeSpan.FromSeconds(5));
            cancellationToken.Token.Register(() => crossPlatformSocket.Dispose());

            await crossPlatformSocket.ConnectAsync(new DnsEndPoint("www.github.com", 54321), cancellationToken.Token);
        });
    }

    // [TestMethod]
    // public async Task Use_Disconnected_Socket()
    // {
    //     var crossPlatformSocket = new CrossPlatformSocket(ProtocolType.Tcp);
    //
    //     await crossPlatformSocket.ConnectAsync("www.github.com", 80);
    //
    //     var requestBuffer = Encoding.UTF8.GetBytes("GET /wrong_uri HTTP/1.1\r\nConnection: close\r\n\r\n");
    //     await crossPlatformSocket.SendAsync(new ArraySegment<byte>(requestBuffer), System.Net.Sockets.SocketFlags.None);
    //
    //     var buffer = new byte[64000];
    //     var length = await crossPlatformSocket.ReceiveAsync(new ArraySegment<byte>(buffer), System.Net.Sockets.SocketFlags.None);
    //
    //     await Task.Delay(500);
    //
    //     await crossPlatformSocket.SendAsync(new ArraySegment<byte>(requestBuffer), System.Net.Sockets.SocketFlags.None);
    // }

    [TestMethod]
    public void Set_Options()
    {
        var crossPlatformSocket = new CrossPlatformSocket(ProtocolType.Tcp);

        Assert.IsFalse(crossPlatformSocket.ReuseAddress);
        crossPlatformSocket.ReuseAddress = true;
        Assert.IsTrue(crossPlatformSocket.ReuseAddress);

        Assert.IsFalse(crossPlatformSocket.NoDelay);
        crossPlatformSocket.NoDelay = true;
        Assert.IsTrue(crossPlatformSocket.NoDelay);
    }
}