✨ Client library.

Signed-off-by: 秋雨落 <i@rain.cx>

CrystalConnector.Client/ConnectorClient.cs

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+using System.Net.WebSockets;
+using System.Reactive.Linq;
+using CrystalConnector.Client.Extensions;
+using CrystalConnector.Protocol.Entities;
+using CrystalConnector.Protocol.Messages;
+using CrystalConnector.Protocol.Packets;
+using CrystalConnector.Protocol.Packets.C2S;
+using CrystalConnector.Protocol.Packets.S2C;
+using Microsoft.Extensions.Logging;
+using Websocket.Client;
+
+namespace CrystalConnector.Client;
+
+public class ConnectorClient
+{
+    public delegate void PayloadHandler(ConnectorClient client, ForwardPacket packet);
+
+    public event PayloadHandler? OnPayload;
+    
+    private WebsocketClient Client { get; }
+
+    private List<Channel> Channels { get; } = new();
+
+    private ILogger? Logger { get; }
+
+    public ConnectorClient(NamespacedId id, string name, string key, 
+        IEnumerable<Tuple<NamespacedId, MessageDirection>> channels, Uri uri)
+    {
+        Client = new WebsocketClient(uri);
+
+        Channels.AddRange(channels.Select(ch => new Channel
+        {
+            Id = ch.Item1.ToName(),
+            Direction = ch.Item2
+        }).ToList());
+        
+        Client.ReconnectTimeout = null;
+        Client.ReconnectionHappened.Subscribe(info =>
+        {
+            Logger?.LogInformation("Connected! Type: {Type}", info.Type);
+
+            var packet = new AuthenticatePacket(id.ToName(), name, key, Channels);
+            Client.Send(packet);
+        });
+        
+        Client.MessageReceived.Where(msg => msg.MessageType == WebSocketMessageType.Binary)
+            .Subscribe(message =>
+            {
+                try
+                {
+                    var packet = IPacket.From(message.Binary!);
+                    switch (packet)
+                    {
+                        case ForwardPacket forwardPacket:
+                        {
+                            OnPayload?.Invoke(this, forwardPacket);
+                            break;
+                        }
+                        case ResultPacket resultPacket:
+                        {
+                            if (resultPacket.ResultOneofCase != Result.ResultOneofCase.Successful)
+                            {
+                                Logger?.LogWarning("Warn {Error}", resultPacket.Error.ToString());
+                            }
+                            break;
+                        }
+                    }
+                }
+                catch (Exception ex)
+                {
+                    Logger?.LogWarning(ex, "Bad packet!");
+                }
+            });
+    }
+    
+    public ConnectorClient(NamespacedId id, string name, string key, 
+        IEnumerable<Tuple<NamespacedId, MessageDirection>> channels, Uri uri, ILogger logger)
+        : this(id, name, key, channels, uri)
+    {
+        Logger = logger;
+    }
+
+    public async Task Start()
+    {
+        Logger?.LogInformation("Connector connecting...");
+        await Client.Start();
+    }
+
+    public async Task Stop()
+    {
+        Logger?.LogInformation("Connector disconnecting...");
+        await Client.Stop(WebSocketCloseStatus.NormalClosure, "");
+    }
+
+    public void Send(NamespacedId channel, string payload)
+    {
+        Client.Send(new PublishPacket(channel, payload));
+    }
+}

CrystalConnector.Client/CrystalConnector.Client.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net8.0</TargetFramework>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+        <GeneratePackageOnBuild>True</GeneratePackageOnBuild>
+        <Authors>qyl27,MeowCraftMC</Authors>
+        <RepositoryUrl>https://github.com/MeowCraftMC/CrystalConnector</RepositoryUrl>
+        <PackageLicenseExpression>Apache-2.0</PackageLicenseExpression>
+        <PackageRequireLicenseAcceptance>True</PackageRequireLicenseAcceptance>
+        <IncludeSymbols>True</IncludeSymbols>
+        <PackageProjectUrl>https://github.com/MeowCraftMC/CrystalConnector</PackageProjectUrl>
+    </PropertyGroup>
+
+    <ItemGroup>
+      <ProjectReference Include="..\CrystalConnector.Protocol\CrystalConnector.Protocol.csproj" />
+    </ItemGroup>
+
+    <ItemGroup>
+      <PackageReference Include="Websocket.Client" Version="5.0.0" />
+    </ItemGroup>
+
+</Project>

CrystalConnector.Client/Extensions/WebsocketClientExtension.cs

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+using CrystalConnector.Protocol.Packets;
+using Websocket.Client;
+
+namespace CrystalConnector.Client.Extensions;
+
+public static class WebsocketClientExtension
+{
+    public static void Send(this WebsocketClient client, IPacket packet)
+    {
+        client.Send(packet.Write());
+    }
+}