🧱 Grpc service basis

DysonNetwork.Pusher/Connection/WebSocketPacket.cs

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+using System.Text.Json;
+using NodaTime;
+using NodaTime.Serialization.SystemTextJson;
+
+public class WebSocketPacketType
+{
+    public const string Error = "error";
+    public const string MessageNew = "messages.new";
+    public const string MessageUpdate = "messages.update";
+    public const string MessageDelete = "messages.delete";
+    public const string CallParticipantsUpdate = "call.participants.update";
+}
+
+public class WebSocketPacket
+{
+    public string Type { get; set; } = null!;
+    public object Data { get; set; } = null!;
+    public string? ErrorMessage { get; set; }
+
+    /// <summary>
+    /// Creates a WebSocketPacket from raw WebSocket message bytes
+    /// </summary>
+    /// <param name="bytes">Raw WebSocket message bytes</param>
+    /// <returns>Deserialized WebSocketPacket</returns>
+    public static WebSocketPacket FromBytes(byte[] bytes)
+    {
+        var json = System.Text.Encoding.UTF8.GetString(bytes);
+        var jsonOpts = new JsonSerializerOptions
+        {
+            PropertyNamingPolicy = JsonNamingPolicy.SnakeCaseLower,
+            DictionaryKeyPolicy = JsonNamingPolicy.SnakeCaseLower,
+        };
+        return JsonSerializer.Deserialize<WebSocketPacket>(json, jsonOpts) ??
+            throw new JsonException("Failed to deserialize WebSocketPacket");
+    }
+
+    /// <summary>
+    /// Deserializes the Data property to the specified type T
+    /// </summary>
+    /// <typeparam name="T">Target type to deserialize to</typeparam>
+    /// <returns>Deserialized data of type T</returns>
+    public T? GetData<T>()
+    {
+        if (Data is T typedData)
+            return typedData;
+
+        var jsonOpts = new JsonSerializerOptions
+        {
+            PropertyNamingPolicy = JsonNamingPolicy.SnakeCaseLower,
+            DictionaryKeyPolicy = JsonNamingPolicy.SnakeCaseLower,
+        };
+        return JsonSerializer.Deserialize<T>(
+            JsonSerializer.Serialize(Data, jsonOpts),
+            jsonOpts
+        );
+    }
+
+    /// <summary>
+    /// Serializes this WebSocketPacket to a byte array for sending over WebSocket
+    /// </summary>
+    /// <returns>Byte array representation of the packet</returns>
+    public byte[] ToBytes()
+    {
+        var jsonOpts = new JsonSerializerOptions
+        {
+            PropertyNamingPolicy = JsonNamingPolicy.SnakeCaseLower,
+            DictionaryKeyPolicy = JsonNamingPolicy.SnakeCaseLower,
+        }.ConfigureForNodaTime(DateTimeZoneProviders.Tzdb);
+        var json = JsonSerializer.Serialize(this, jsonOpts);
+        return System.Text.Encoding.UTF8.GetBytes(json);
+    }
+}