Refactor member updates to use a patch object

PluralKit.Core/Models/ModelQueryExt.cs

@@ -3,6 +3,8 @@ using System.Threading.Tasks;
 
 using Dapper;
 
+using PluralKit.Core;
+
 namespace PluralKit.Core
 {
     public static class ModelQueryExt
@@ -26,5 +28,16 @@ namespace PluralKit.Core
             conn.QueryFirstAsync<MemberGuildSettings>(
                 "insert into member_guild (guild, member) values (@guild, @member) on conflict (guild, member) do update set guild = @guild, member = @member returning *",
                 new {guild, member});
+
+        public static Task<PKMember> UpdateMember(this IPKConnection conn, MemberId id, MemberPatch patch)
+        {
+            var (query, pms) = patch.Apply(new UpdateQueryBuilder("members", "id = @id"))
+                .WithConstant("id", id)
+                .Build("returning *");
+            return conn.QueryFirstAsync<PKMember>(query, pms);
+        }
+
+        public static Task DeleteMember(this IPKConnection conn, MemberId id) =>
+            conn.ExecuteAsync("delete from members where id = @Id", new {Id = id});
     }
 }