feat: begin working on client

src/StevesBot.Worker/Discord/DiscordGatewayClient.cs

@@ -0,0 +1,48 @@
+namespace StevesBot.Worker.Discord;
+
+internal class DiscordGatewayClient : IDiscordGatewayClient
+{
+  private readonly DiscordGatewayClientOptions _options;
+  private readonly IWebSocketFactory _webSocketFactory;
+  private readonly ILogger<DiscordGatewayClient> _logger;
+  private readonly JsonSerializerOptions _jsonSerializerOptions = new()
+  {
+    PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
+    ReferenceHandler = ReferenceHandler.IgnoreCycles,
+    Converters =
+    {
+      new DiscordEventConverter(),
+    },
+  };
+  private readonly AsyncLock _lock = new();
+
+  private string _gatewayUrl = string.Empty;
+  private IWebSocket? _webSocket;
+  private Task? _receiveTask;
+  private DateTime _timeLastHeartbeatSent = DateTime.MinValue;
+  private DateTime _timeLastHeartbeatAcknowledged = DateTime.MinValue;
+  private CancellationTokenSource? _heartbeatCts;
+  private Task? _heartbeatTask;
+  private string _sessionId = string.Empty;
+  private string _resumeGatewayUrl = string.Empty;
+
+  public DiscordGatewayClient(
+    DiscordGatewayClientOptions options,
+    IWebSocketFactory webSocketFactory,
+    ILogger<DiscordGatewayClient> logger
+  )
+  {
+    _options = options ?? throw new ArgumentNullException(nameof(options));
+    _webSocketFactory = webSocketFactory ?? throw new ArgumentNullException(nameof(webSocketFactory));
+    _logger = logger ?? throw new ArgumentNullException(nameof(logger));
+  }
+
+  public void Dispose()
+  {
+    _heartbeatCts?.Cancel();
+    _heartbeatCts?.Dispose();
+    _heartbeatTask?.Dispose();
+    _receiveTask?.Dispose();
+    _webSocket?.Dispose();
+  }
+}

src/StevesBot.Worker/Discord/IDiscordGatewayClient.cs

@@ -0,0 +1,5 @@
+namespace StevesBot.Worker.Discord;
+
+internal interface IDiscordGatewayClient : IDisposable
+{
+}