this commit is illegal

TeamOctolings.Octobot/Commands/SettingsCommandGroup.cs

@@ -202,6 +202,29 @@ public sealed class SettingsCommandGroup : CommandGroup
         IGuildOption option, string value, GuildData data, Snowflake channelId, IUser executor, IUser bot,
         CancellationToken ct = default)
     {
+        Console.WriteLine(option.Value(data.Settings));
+
+        var equalsResult = option.ValueEquals(data.Settings, value, out var equals);
+        if (!equalsResult.IsSuccess)
+        {
+            var failedEmbed = new EmbedBuilder().WithSmallTitle(Messages.SettingNotChanged, bot)
+                .WithDescription(equalsResult.Error.Message)
+                .WithColour(ColorsList.Red)
+                .Build();
+
+            return await _feedback.SendContextualEmbedResultAsync(failedEmbed, ct: ct);
+        }
+
+        if (equals)
+        {
+            var failedEmbed = new EmbedBuilder().WithSmallTitle(Messages.SettingNotChanged, bot)
+                .WithDescription(Messages.SettingValueEquals)
+                .WithColour(ColorsList.Red)
+                .Build();
+
+            return await _feedback.SendContextualEmbedResultAsync(failedEmbed, ct: ct);
+        }
+
         var setResult = option.Set(data.Settings, value);
         if (!setResult.IsSuccess)
         {

TeamOctolings.Octobot/Data/Options/BoolOption.cs

@@ -12,6 +12,18 @@ public sealed class BoolOption : GuildOption<bool>
         return Get(settings) ? Messages.Yes : Messages.No;
     }
 
+    public override Result ValueEquals(JsonNode settings, string value, out bool equals)
+    {
+        if (!TryParseBool(value, out var boolean))
+        {
+            equals = false;
+            return new ArgumentInvalidError(nameof(value), Messages.InvalidSettingValue);
+        }
+
+        equals = Value(settings).Equals(boolean.ToString());
+        return Result.Success;
+    }
+
     public override Result Set(JsonNode settings, string from)
     {
         if (!TryParseBool(from, out var value))

TeamOctolings.Octobot/Data/Options/GuildOption.cs

@@ -21,9 +21,20 @@ public class GuildOption<T> : IGuildOption
 
     public string Name { get; }
 
+    public virtual string Value(JsonNode settings)
+    {
+        return Get(settings).ToString() ?? throw new InvalidOperationException();
+    }
+
     public virtual string Display(JsonNode settings)
     {
-        return Markdown.InlineCode(Get(settings).ToString() ?? throw new InvalidOperationException());
+        return Markdown.InlineCode(Value(settings));
+    }
+
+    public virtual Result ValueEquals(JsonNode settings, string value, out bool equals)
+    {
+        equals = Value(settings).Equals(value);
+        return Result.Success;
     }
 
     /// <summary>

TeamOctolings.Octobot/Data/Options/IGuildOption.cs

@@ -6,7 +6,9 @@ namespace TeamOctolings.Octobot.Data.Options;
 public interface IGuildOption
 {
     string Name { get; }
+    string Value(JsonNode settings);
     string Display(JsonNode settings);
+    Result ValueEquals(JsonNode settings, string value, out bool equals);
     Result Set(JsonNode settings, string from);
     Result Reset(JsonNode settings);
 }

TeamOctolings.Octobot/Data/Options/LanguageOption.cs

@@ -16,9 +16,9 @@ public sealed class LanguageOption : GuildOption<CultureInfo>
 
     public LanguageOption(string name, string defaultValue) : base(name, CultureInfoCache[defaultValue]) { }
 
-    public override string Display(JsonNode settings)
+    public override string Value(JsonNode settings)
     {
-        return Markdown.InlineCode(settings[Name]?.GetValue<string>() ?? "en");
+        return settings[Name]?.GetValue<string>() ?? "en";
     }
 
     /// <inheritdoc />

TeamOctolings.Octobot/Messages.Designer.cs

@@ -1196,5 +1196,11 @@ namespace TeamOctolings.Octobot {
                 return ResourceManager.GetString("SettingsModeratorRole", resourceCulture);
             }
         }
+        
+        internal static string SettingValueEquals {
+            get {
+                return ResourceManager.GetString("SettingValueEquals", resourceCulture);
+            }
+        }
     }
 }

TeamOctolings.Octobot/Messages.resx

@@ -681,4 +681,7 @@
     <data name="SettingsModeratorRole" xml:space="preserve">
       <value>Moderator role</value>
   </data>
+  <data name="SettingValueEquals" xml:space="preserve">
+      <value>The setting value is the same as the input value.</value>
+  </data>
 </root>

TeamOctolings.Octobot/Messages.ru.resx

@@ -681,4 +681,7 @@
     <data name="SettingsModeratorRole" xml:space="preserve">
       <value>Роль модератора</value>
   </data>
+  <data name="SettingValueEquals" xml:space="preserve">
+      <value>Значение настройки такое же, как и вводное значение.</value>
+  </data>
 </root>