Split message/proxy data up in MessageContext and ProxyMember

PluralKit.Core/Database/Functions/MessageContext.cs

@@ -0,0 +1,27 @@
+#nullable enable
+using System.Collections.Generic;
+
+using NodaTime;
+
+namespace PluralKit.Core
+{
+    /// <summary>
+    /// Model for the `message_context` PL/pgSQL function in `functions.sql`
+    /// </summary>
+    public class MessageContext
+    {
+        public int? SystemId { get; set; }
+        public ulong? LogChannel { get; set; }
+        public bool InBlacklist { get; set; }
+        public bool InLogBlacklist { get; set; }
+        public bool LogCleanupEnabled { get; set; }
+        public bool ProxyEnabled { get; set; }
+        public AutoproxyMode AutoproxyMode { get; set; }
+        public int? AutoproxyMember { get; set; }
+        public ulong? LastMessage { get; set; }
+        public int? LastMessageMember { get; set; }
+        public int LastSwitch { get; set; }
+        public IReadOnlyList<int> LastSwitchMembers { get; set; } = new int[0];
+        public Instant LastSwitchTimestamp { get; set; }
+    }
+}