Add member find/search command

PluralKit.Bot/Commands/CommandTree.cs

@@ -19,6 +19,7 @@ namespace PluralKit.Bot
         public static Command SystemTimezone = new Command("system timezone", "system timezone [timezone]", "Changes your system's time zone");
         public static Command SystemProxy = new Command("system proxy", "system proxy [on|off]", "Enables or disables message proxying in a specific server");
         public static Command SystemList = new Command("system list", "system [system] list [full]", "Lists a system's members");
+        public static Command SystemFind = new Command("system find", "system [system] find [full] <search term>", "Searches a system's members given a search term");
         public static Command SystemFronter = new Command("system fronter", "system [system] fronter", "Shows a system's fronter(s)");
         public static Command SystemFrontHistory = new Command("system fronthistory", "system [system] fronthistory", "Shows a system's front history");
         public static Command SystemFrontPercent = new Command("system frontpercent", "system [system] frontpercent [timespan]", "Shows a system's front breakdown");
@@ -91,6 +92,10 @@ namespace PluralKit.Bot
                 return HandleSwitchCommand(ctx);
             if (ctx.Match("ap", "autoproxy", "auto"))
                 return ctx.Execute<Autoproxy>(Autoproxy, m => m.AutoproxyRoot(ctx));
+            if (ctx.Match("list", "l", "members"))
+                return ctx.Execute<SystemList>(SystemList, m => m.MemberList(ctx, ctx.System));
+            if (ctx.Match("f", "find", "search", "query", "fd"))
+                return ctx.Execute<SystemList>(SystemFind, m => m.MemberFind(ctx, ctx.System));
             if (ctx.Match("link"))
                 return ctx.Execute<SystemLink>(Link, m => m.LinkSystem(ctx));
             if (ctx.Match("unlink"))
@@ -173,6 +178,8 @@ namespace PluralKit.Bot
                 await ctx.Execute<SystemEdit>(SystemProxy, m => m.SystemProxy(ctx));
             else if (ctx.Match("list", "l", "members"))
                 await ctx.Execute<SystemList>(SystemList, m => m.MemberList(ctx, ctx.System));
+            else if (ctx.Match("find", "search", "query", "fd", "s"))
+                await ctx.Execute<SystemList>(SystemFind, m => m.MemberFind(ctx, ctx.System));
             else if (ctx.Match("f", "front", "fronter", "fronters"))
             {
                 if (ctx.Match("h", "history"))
@@ -208,6 +215,8 @@ namespace PluralKit.Bot
             }
             else if (ctx.Match("list", "l", "members"))
                 await ctx.Execute<SystemList>(SystemList, m => m.MemberList(ctx, target));
+            else if (ctx.Match("find", "search", "query", "fd", "s"))
+                await ctx.Execute<SystemList>(SystemFind, m => m.MemberFind(ctx, ctx.System));
             else if (ctx.Match("f", "front", "fronter", "fronters"))
             {
                 if (ctx.Match("h", "history"))

PluralKit.Bot/Commands/SystemList.cs

@@ -107,5 +107,29 @@ namespace PluralKit.Bot
             else 
                 await RenderMemberList(ctx, system,  canShowPrivate, 25, embedTitle, _ => true, ShortRenderer);
         }
+
+        public async Task MemberFind(Context ctx, PKSystem system)
+        {
+            if (system == null) throw Errors.NoSystemError;
+            ctx.CheckSystemPrivacy(system, system.MemberListPrivacy);
+
+            var shouldShowLongList = ctx.Match("f", "full", "big", "details", "long");
+            var canShowPrivate = ctx.Match("a", "all", "everyone", "private");
+
+            var searchTerm = ctx.RemainderOrNull() ?? throw new PKSyntaxError("You must specify a search term.");
+            
+            var embedTitle = system.Name != null
+                ? $"Members of {system.Name.SanitizeMentions()} (`{system.Hid}`) **{searchTerm.SanitizeMentions()}**"
+                : $"Members of `{system.Hid}` matching **{searchTerm.SanitizeMentions()}**";
+
+            bool Filter(PKMember member) =>
+                member.Name.Contains(searchTerm, StringComparison.InvariantCultureIgnoreCase) ||
+                (member.DisplayName?.Contains(searchTerm, StringComparison.InvariantCultureIgnoreCase) ?? false);
+            
+            if (shouldShowLongList)
+                await RenderMemberList(ctx, system,  canShowPrivate, 5, embedTitle, Filter, LongRenderer);
+            else 
+                await RenderMemberList(ctx, system,  canShowPrivate, 25, embedTitle, Filter, ShortRenderer);
+        }
     }
 }