Fix ping-like query failing; other small changes

RegexBot-Modules/PendingOutRole/ModuleConfig.cs

@@ -5,7 +5,7 @@ class ModuleConfig {
     public EntityName Role { get; }
 
     public ModuleConfig(JObject conf) {
-        var cfgRole = conf["Role"]?.Value<string>();
+        var cfgRole = conf[nameof(Role)]?.Value<string>();
         if (string.IsNullOrWhiteSpace(cfgRole))
             throw new ModuleLoadException("Role was not specified.");
         Role = new EntityName(cfgRole);

RegexBot-Modules/RegexModerator/ResponseExecutor.cs

@@ -141,7 +141,7 @@ class ResponseExecutor {
             result = await _bot.KickAsync(_guild, $"Rule '{_rule.Label}'", _user.Id,
                                           parameter, _rule.NotifyUserOfRemoval);
         }
-        if (result.ErrorForbidden) return FromError(ForbiddenGenericError);
+        if (result.ErrorForbidden) return FromError(Strings.ForbiddenGenericError);
         if (result.ErrorNotFound) return FromError("The target user is no longer in the server.");
         if (_rule.NotifyChannelOfRemoval) await _msg.Channel.SendMessageAsync(result.GetResultString(_bot));
         return FromSuccess(result.MessageSendSuccess ? null : "Unable to send notification DM.");

RegexBot/Common/Utilities.cs

@@ -2,12 +2,18 @@
 using Discord.WebSocket;
 using Newtonsoft.Json.Linq;
 using System.Diagnostics.CodeAnalysis;
+using System.Text.RegularExpressions;
 
 namespace RegexBot.Common;
 /// <summary>
 /// Miscellaneous utility methods useful for the bot and modules.
 /// </summary>
 public static class Utilities {
+    public static Regex ChannelMention { get; } = new(@"<#(?<snowflake>\d+)>", RegexOptions.Compiled);
+    public static Regex CustomEmoji { get; } = new(@"<:(?<name>[A-Za-z0-9_]{2,}):(?<ID>\d+)>", RegexOptions.Compiled);
+    public static Regex DiscriminatorSearch { get; } = new(@"(.+)#(\d{4}(?!\d))", RegexOptions.Compiled);
+    public static Regex UserMention { get; } = new(@"<@!?(?<snowflake>\d+)>", RegexOptions.Compiled);
+
     /// <summary>
     /// Performs common checks on the specified message to see if it fits all the criteria of a
     /// typical, ordinary message sent by an ordinary guild user.

RegexBot/Services/EntityCache/UserCachingSubservice.cs

@@ -1,6 +1,6 @@
 using Discord.WebSocket;
+using RegexBot.Common;
 using RegexBot.Data;
-using System.Text.RegularExpressions;
 
 namespace RegexBot.Services.EntityCache;
 /// <summary>
@@ -10,8 +10,6 @@ namespace RegexBot.Services.EntityCache;
 /// </summary>
 [System.Diagnostics.CodeAnalysis.SuppressMessage("Performance", "CA1822:Mark members as static")]
 class UserCachingSubservice {
-    private static Regex DiscriminatorSearch { get; } = new(@"(.+)#(\d{4}(?!\d))", RegexOptions.Compiled);
-
     internal UserCachingSubservice(RegexbotClient bot) {
         bot.DiscordClient.GuildMembersDownloaded += DiscordClient_GuildMembersDownloaded;
         bot.DiscordClient.GuildMemberUpdated += DiscordClient_GuildMemberUpdated;
@@ -84,15 +82,18 @@ class UserCachingSubservice {
             return query.SingleOrDefault();
         }
 
-        // Is search just a number? Assume ID, pass it on to the correct place.
+        // Is search actually a ping? Extract ID.
+        var m = Utilities.UserMention.Match(search);
+        if (m.Success) search = m.Groups["snowflake"].Value;
+
+        // Is search a number? Assume ID, proceed to query.
         if (ulong.TryParse(search, out var searchid)) {    
             var idres = innerQuery(searchid, null);
             if (idres != null) return idres;
         }
 
-        // If the above fails, assume the number may be a string to search.
+        // All of the above failed. Assume the number may be a string to search.
         var namesplit = SplitNameAndDiscriminator(search);
-
         return innerQuery(null, namesplit);
     }
 
@@ -114,22 +115,25 @@ class UserCachingSubservice {
             return query.SingleOrDefault();
         }
 
-        // Is search just a number? Assume ID, pass it on to the correct place.
+        // Is search actually a ping? Extract ID.
+        var m = Utilities.UserMention.Match(search);
+        if (m.Success) search = m.Groups["snowflake"].Value;
+
+        // Is search a number? Assume ID, proceed to query.
         if (ulong.TryParse(search, out var searchid)) {
             var idres = innerQuery(guildId, searchid, null);
             if (idres != null) return idres;
         }
         
-        // If the above fails, assume the number may be a string to search.
+        // All of the above failed. Assume the number may be a string to search.
         var namesplit = SplitNameAndDiscriminator(search);
-
         return innerQuery(guildId, null, namesplit);
     }
 
     private static (string, string?) SplitNameAndDiscriminator(string input) {
         string name;
         string? disc = null;
-        var split = DiscriminatorSearch.Match(input);
+        var split = Utilities.DiscriminatorSearch.Match(input);
         if (split.Success) {
             name = split.Groups[1].Value;
             disc = split.Groups[2].Value;