funny react

Program.cs

@@ -66,6 +66,32 @@ client.MessageService.MessageReceived += async (message) =>
         }
     };
 
+    if (Utils.ContainsAny(content, $"{prefix}react"))
+    {
+        if (message.AuthorUserId != ownerId) return;
+
+        string[] args = content.Split(' ', StringSplitOptions.RemoveEmptyEntries);
+        if (args.Length < 2) return;
+        string emoji = args[1];
+
+        var interceptor = new Utils.ReactionInterceptor(Console.Out);
+        Console.SetOut(interceptor);
+
+        while (true)
+        {
+            interceptor.Reset();
+            await message.AddReactionAsync(emoji);
+            if (interceptor.DetectedAlreadyExists)
+            {
+                Console.SetOut(new StreamWriter(Console.OpenStandardOutput()) { AutoFlush = true });
+                Console.WriteLine("Reaction already exists, stopping.");
+                break; 
+            }
+        }
+
+        Console.SetOut(new StreamWriter(Console.OpenStandardOutput()) { AutoFlush = true });
+    }
+
     var echoprefixes = new[] { $"{prefix}echo"};
     if (Utils.ContainsAny(content, echoprefixes))
     {

utils.cs

@@ -2,6 +2,7 @@ using System.Globalization;
 using System.Text.Json;
 using Valour.Sdk.Models;
 using Valour.Sdk.Client;
+using System.Text;
 
 namespace SkyBot
 {
@@ -105,5 +106,33 @@ namespace SkyBot
                 initializedPlanets.Add(planet.Id);
             }
         }
+
+        public class ReactionInterceptor : TextWriter
+        {
+            private readonly TextWriter _original;
+            public bool DetectedAlreadyExists { get; private set; }
+            public override Encoding Encoding => _original.Encoding;
+
+            public ReactionInterceptor(TextWriter original)
+            {
+                _original = original;
+            }
+
+            public void Reset() => DetectedAlreadyExists = false;
+
+            public override void WriteLine(string value)
+            {
+                if (value?.Contains("Reaction already exists") == true)
+                    DetectedAlreadyExists = true;
+                _original.WriteLine(value);
+            }
+
+            public override void Write(string value)
+            {
+                if (value?.Contains("Reaction already exists") == true)
+                    DetectedAlreadyExists = true;
+                _original.Write(value);
+            }
+        }
     };
 };