Killed history

NadekoBot.Core/Common/Attributes/UserPerm.cs

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+using System;
+using System.Threading.Tasks;
+using Discord.Commands;
+using Microsoft.Extensions.DependencyInjection;
+using NadekoBot.Modules.Administration.Services;
+
+namespace Discord
+{
+    [AttributeUsage(AttributeTargets.Method, AllowMultiple = false)]
+    public class UserPermAttribute : PreconditionAttribute
+    {
+        public RequireUserPermissionAttribute UserPermissionAttribute { get; }
+
+        public UserPermAttribute(GuildPerm permission)
+        {
+            UserPermissionAttribute = new RequireUserPermissionAttribute((GuildPermission)permission);
+        }
+
+        public UserPermAttribute(ChannelPerm permission)
+        {
+            UserPermissionAttribute = new RequireUserPermissionAttribute((ChannelPermission)permission);
+        }
+
+        public override Task<PreconditionResult> CheckPermissionsAsync(ICommandContext context, CommandInfo command, IServiceProvider services)
+        {
+            var permService = services.GetService<DiscordPermOverrideService>();
+            if (permService.TryGetOverrides(context.Guild?.Id ?? 0, command.Name.ToUpperInvariant(), out var _))
+                return Task.FromResult(PreconditionResult.FromSuccess());
+            
+            return UserPermissionAttribute.CheckPermissionsAsync(context, command, services);
+        }
+    }
+}