Current state of the websocket server for the Hermes client

Socket/Handlers/EmoteUsageHandler.cs

@@ -0,0 +1,75 @@
+using HermesSocketLibrary.db;
+using HermesSocketLibrary.Socket.Data;
+using Npgsql;
+using ILogger = Serilog.ILogger;
+
+namespace HermesSocketServer.Socket.Handlers
+{
+    public class EmoteUsageHandler : ISocketHandler
+    {
+        public int OpCode { get; } = 8;
+
+        private readonly Database _database;
+        private readonly HashSet<string> _history;
+        private readonly EmoteUsageMessage[] _array;
+        private readonly ILogger _logger;
+
+        private int _index;
+
+        public EmoteUsageHandler(Database database, ILogger logger)
+        {
+            _database = database;
+            _logger = logger;
+            _history = new HashSet<string>(101);
+            _array = new EmoteUsageMessage[100];
+            _index = -1;
+        }
+
+
+        public async Task Execute<T>(WebSocketUser sender, T message, HermesSocketManager sockets)
+        {
+            if (message is not EmoteUsageMessage data)
+                return;
+
+            lock (_logger)
+            {
+                if (_history.Contains(data.MessageId))
+                {
+                    return;
+                }
+                _history.Add(data.MessageId);
+
+                if (_index >= _array.Length - 1)
+                    _index = -1;
+
+                _index = (_index + 1) % _array.Length;
+                if (_array[_index] != null)
+                    _history.Remove(data.MessageId);
+
+                _array[_index] = data;
+            }
+
+            int rows = 0;
+            string sql = "INSERT INTO \"EmoteUsageHistory\" (timestamp, \"broadcasterId\", \"emoteId\", \"chatterId\") VALUES (@time, @broadcaster, @emote, @chatter)";
+            using (var connection = await _database.DataSource.OpenConnectionAsync())
+            {
+                using (var command = new NpgsqlCommand(sql, connection))
+                {
+                    foreach (var entry in data.Emotes)
+                    {
+                        command.Parameters.Clear();
+                        command.Parameters.AddWithValue("time", data.DateTime);
+                        command.Parameters.AddWithValue("broadcaster", data.BroadcasterId);
+                        command.Parameters.AddWithValue("emote", entry);
+                        command.Parameters.AddWithValue("chatter", data.ChatterId);
+
+                        await command.PrepareAsync();
+                        rows += await command.ExecuteNonQueryAsync();
+                    }
+                }
+            }
+
+            _logger.Information($"Tracked {rows} emote(s) to history.");
+        }
+    }
+}