Added .doas command which executes the command as if you were the target user

src/NadekoBot/Modules/Administration/Self/DoAsUserMessage.cs

@@ -0,0 +1,138 @@
+using MessageType = Discord.MessageType;
+
+namespace NadekoBot.Modules.Administration;
+
+public sealed class DoAsUserMessage : IUserMessage
+{
+    private readonly string _message;
+    private IUserMessage _msg;
+    private readonly IUser _user;
+
+    public DoAsUserMessage(SocketUserMessage msg, IUser user, string message)
+    {
+        _msg = msg;
+        _user = user;
+        _message = message;
+    }
+
+    public ulong Id => _msg.Id;
+
+    public DateTimeOffset CreatedAt => _msg.CreatedAt;
+
+    public Task DeleteAsync(RequestOptions options = null)
+    {
+        return _msg.DeleteAsync(options);
+    }
+
+    public Task AddReactionAsync(IEmote emote, RequestOptions options = null)
+    {
+        return _msg.AddReactionAsync(emote, options);
+    }
+
+    public Task RemoveReactionAsync(IEmote emote, IUser user, RequestOptions options = null)
+    {
+        return _msg.RemoveReactionAsync(emote, user, options);
+    }
+
+    public Task RemoveReactionAsync(IEmote emote, ulong userId, RequestOptions options = null)
+    {
+        return _msg.RemoveReactionAsync(emote, userId, options);
+    }
+
+    public Task RemoveAllReactionsAsync(RequestOptions options = null)
+    {
+        return _msg.RemoveAllReactionsAsync(options);
+    }
+
+    public Task RemoveAllReactionsForEmoteAsync(IEmote emote, RequestOptions options = null)
+    {
+        return _msg.RemoveAllReactionsForEmoteAsync(emote, options);
+    }
+
+    public IAsyncEnumerable<IReadOnlyCollection<IUser>> GetReactionUsersAsync(IEmote emoji, int limit,
+        RequestOptions options = null)
+    {
+        return _msg.GetReactionUsersAsync(emoji, limit, options);
+    }
+
+    public MessageType Type => _msg.Type;
+
+    public MessageSource Source => _msg.Source;
+
+    public bool IsTTS => _msg.IsTTS;
+
+    public bool IsPinned => _msg.IsPinned;
+
+    public bool IsSuppressed => _msg.IsSuppressed;
+
+    public bool MentionedEveryone => _msg.MentionedEveryone;
+
+    public string Content => _message;
+
+    public string CleanContent => _msg.CleanContent;
+
+    public DateTimeOffset Timestamp => _msg.Timestamp;
+
+    public DateTimeOffset? EditedTimestamp => _msg.EditedTimestamp;
+
+    public IMessageChannel Channel => _msg.Channel;
+
+    public IUser Author => _user;
+
+    public IReadOnlyCollection<IAttachment> Attachments => _msg.Attachments;
+
+    public IReadOnlyCollection<IEmbed> Embeds => _msg.Embeds;
+
+    public IReadOnlyCollection<ITag> Tags => _msg.Tags;
+
+    public IReadOnlyCollection<ulong> MentionedChannelIds => _msg.MentionedChannelIds;
+
+    public IReadOnlyCollection<ulong> MentionedRoleIds => _msg.MentionedRoleIds;
+
+    public IReadOnlyCollection<ulong> MentionedUserIds => _msg.MentionedUserIds;
+
+    public MessageActivity Activity => _msg.Activity;
+
+    public MessageApplication Application => _msg.Application;
+
+    public MessageReference Reference => _msg.Reference;
+
+    public IReadOnlyDictionary<IEmote, ReactionMetadata> Reactions => _msg.Reactions;
+
+    public IReadOnlyCollection<IMessageComponent> Components => _msg.Components;
+
+    public IReadOnlyCollection<IStickerItem> Stickers => _msg.Stickers;
+
+    public MessageFlags? Flags => _msg.Flags;
+
+    public IMessageInteraction Interaction => _msg.Interaction;
+
+    public Task ModifyAsync(Action<MessageProperties> func, RequestOptions options = null)
+    {
+        return _msg.ModifyAsync(func, options);
+    }
+
+    public Task PinAsync(RequestOptions options = null)
+    {
+        return _msg.PinAsync(options);
+    }
+
+    public Task UnpinAsync(RequestOptions options = null)
+    {
+        return _msg.UnpinAsync(options);
+    }
+
+    public Task CrosspostAsync(RequestOptions options = null)
+    {
+        return _msg.CrosspostAsync(options);
+    }
+
+    public string Resolve(TagHandling userHandling = TagHandling.Name, TagHandling channelHandling = TagHandling.Name,
+        TagHandling roleHandling = TagHandling.Name,
+        TagHandling everyoneHandling = TagHandling.Ignore, TagHandling emojiHandling = TagHandling.Name)
+    {
+        return _msg.Resolve(userHandling, channelHandling, roleHandling, everyoneHandling, emojiHandling);
+    }
+
+    public IUserMessage ReferencedMessage => _msg.ReferencedMessage;
+}

src/NadekoBot/Modules/Administration/Self/SelfCommands.cs

@@ -35,6 +35,26 @@ public partial class Administration
             _medusaLoader = medusaLoader;
         }
 
+        [Cmd]
+        [OwnerOnly]
+        public async Task DoAs(IUser user, [Leftover] string message)
+        {
+            if (ctx.User is not IGuildUser { GuildPermissions.Administrator: true })
+                return;
+
+            if (ctx.Guild is SocketGuild sg && ctx.Channel is ISocketMessageChannel ch
+                && ctx.Message is SocketUserMessage msg)
+            {
+                var fakeMessage = new DoAsUserMessage(msg, user, message);
+                
+                await _cmdHandler.TryRunCommand(sg, ch, fakeMessage);
+            }
+            else
+            {
+                await ReplyErrorLocalizedAsync(strs.error_occured);
+            }
+        }
+
         [Cmd]
         [RequireContext(ContextType.Guild)]
         [UserPerm(GuildPerm.Administrator)]

src/NadekoBot/Services/CommandHandler.cs

@@ -302,7 +302,7 @@ public class CommandHandler : INService, IReadyExecutor
     }
 
     public Task<(bool Success, string Error, CommandInfo Info)> ExecuteCommandAsync(
-        CommandContext context,
+        ICommandContext context,
         string input,
         int argPos,
         IServiceProvider serviceProvider,
@@ -311,7 +311,7 @@ public class CommandHandler : INService, IReadyExecutor
 
 
     public async Task<(bool Success, string Error, CommandInfo Info)> ExecuteCommand(
-        CommandContext context,
+        ICommandContext context,
         string input,
         IServiceProvider services,
         MultiMatchHandling multiMatchHandling = MultiMatchHandling.Exception)

src/NadekoBot/data/aliases.yml

@@ -1384,3 +1384,6 @@ eval:
   - eval
 autopublish:
   - autopublish
+doas:
+  - doas
+  - execas 

src/NadekoBot/data/strings/commands/commands.en-US.yml

@@ -2346,3 +2346,7 @@ autopublish:
   desc: "Make the bot automatically publish all messages posted in the news channel this command was executed in."
   args:
     - ""
+doas:
+  desc: "Execute the command as if you were the target user. Requires bot ownership and server administrator permission."
+  args:
+    - "@Thief .give all @Admin"