bot: add member deletion command

PluralKit.Bot/Commands/MemberCommands.cs

@@ -167,6 +167,18 @@ namespace PluralKit.Bot.Commands
             await Context.Channel.SendMessageAsync($"{Emojis.Success} Member proxy tags changed to `{ContextEntity.ProxyString}`. Try proxying now!");
         }
 
+        [Command("delete")]
+        [Alias("remove", "erase", "yeet")]
+        [Remarks("member <member> delete")]
+        [MustPassOwnMember]
+        public async Task MemberDelete()
+        {
+            await Context.Channel.SendMessageAsync($"{Emojis.Warn} Are you sure you want to delete \"{ContextEntity.Name}\"? If so, reply to this message with the member's ID (`{ContextEntity.Hid}`). __***This cannot be undone!***__");
+            if (!await Context.ConfirmWithReply(ContextEntity.Hid)) throw Errors.MemberDeleteCancelled;
+            await Members.Delete(ContextEntity);
+            await Context.Channel.SendMessageAsync($"{Emojis.Success} Member deleted.");
+        }
+
         [Command]
         [Alias("view", "show", "info")]
         [Remarks("member")]

PluralKit.Bot/ContextUtils.cs

@@ -48,6 +48,12 @@ namespace PluralKit.Bot {
             (ctx.Client as BaseSocketClient).MessageReceived += Inner;
             return await (tcs.Task.TimeoutAfter(timeout));
         }
+        
+        public static async Task<bool> ConfirmWithReply(this ICommandContext ctx, string expectedReply)
+        {
+            var msg = await ctx.AwaitMessage(ctx.Channel, ctx.User, timeout: TimeSpan.FromMinutes(1));
+            return string.Equals(msg.Content, expectedReply, StringComparison.InvariantCultureIgnoreCase);
+        }
 
         public static async Task Paginate<T>(this ICommandContext ctx, ICollection<T> items, int itemsPerPage, string title, Action<EmbedBuilder, IEnumerable<T>> renderer) {
             var pageCount = (items.Count / itemsPerPage) + 1;

PluralKit.Bot/Errors.cs

@@ -18,5 +18,7 @@ namespace PluralKit.Bot {
         public static PKError BirthdayParseError(string birthday) => new PKError($"\"{birthday}\" could not be parsed as a valid date. Try a format like \"2016-12-24\" or \"May 3 1996\".");
         public static PKError ProxyMustHaveText => new PKSyntaxError("Example proxy message must contain the string 'text'.");
         public static PKError ProxyMultipleText => new PKSyntaxError("Example proxy message must contain the string 'text' exactly once.");
+        
+        public static PKError MemberDeleteCancelled => new PKError($"Member deletion cancelled. Stay safe! {Emojis.ThumbsUp}");
     }
 }

PluralKit.Bot/Services/ProxyService.cs

@@ -24,7 +24,7 @@ namespace PluralKit.Bot
         public PKSystem System;
         public string InnerText;
 
-        public string ProxyName => Member.Name + (System.Tag.Length > 0 ? " " + System.Tag : "");
+        public string ProxyName => Member.Name + (System.Tag != null ? " " + System.Tag : "");
     }
 
     class ProxyService {

PluralKit.Core/Utils.cs

@@ -101,5 +101,6 @@ namespace PluralKit
         public static readonly string Success = "\u2705";
         public static readonly string Error = "\u274C";
         public static readonly string Note = "\u2757";
+        public static readonly string ThumbsUp = "\U0001f44d";
     }
 }