improvements on defusing wires

going back on a wire is now possible

Bomb/Wires.cs

@@ -6,6 +6,15 @@ namespace KTANE_Bot
     public class Wires : KTANE_Module
     {
         private List<string> _wires;
+        private static readonly Dictionary<int, string> indexingDict = new Dictionary<int, string>
+        {
+            { 1, "first" },
+            { 2, "second" },
+            { 3, "third" },
+            { 4, "fourth" },
+            { 5, "fifth" },
+            { 6, "sixth"}
+        };
 
         public int WireCount => _wires.Count;
 
@@ -19,12 +28,20 @@ public void AppendWire(string color)
             _wires.Add(color);
         }
 
+        public string DeletePreviousWire()
+        {
+            var deletedWire = _wires[_wires.Count - 1];
+            _wires.RemoveAt(_wires.Count - 1);
+
+            return $@"The {indexingDict[WireCount + 1]} wire is no longer {deletedWire}.";
+        }
+
         public override string Solve()
         {
             if (_wires.Count > 6)
                 return $"Too many wires given. ({_wires.Count})";
             if (_wires.Count < 3)
-                return $"You must give at least 3 wires. ({_wires.Count})";
+                return $"You must give at least 3 wires. ({_wires.Count} given)";
 
             var redWires = (from wire in _wires where wire == "red" select wire).Count();
             var whiteWires = (from wire in _wires where wire == "white" select wire).Count();
@@ -96,16 +113,6 @@ private string IndexToWords(int index)
             if (index == _wires.Count)
                 return "last";
 
-            var indexingDict = new Dictionary<int, string>
-            {
-                { 1, "first" },
-                { 2, "second" },
-                { 3, "third" },
-                { 4, "fourth" },
-                { 5, "fifth" },
-                { 6, "sixth"}
-            };
-
             return indexingDict[index];
         }
     }

Grammar/DefuseGrammar.cs

@@ -91,7 +91,7 @@ private static Grammar _MemoryGrammar()
 
         private static Grammar _WiresGrammar()
         {
-            return new Grammar(new GrammarBuilder(new Choices(new string[] {"yellow", "blue", "black", "white", "red", "done"}))) {Name = "Wires Grammar"};
+            return new Grammar(new GrammarBuilder(new Choices(new string[] {"yellow", "blue", "black", "white", "red", "done", "wrong"}))) {Name = "Wires Grammar"};
         }
 
         private static Grammar _KnobGrammar()

Grammar/KTANE_Speech.cs

@@ -235,16 +235,8 @@ public string AnalyzeSpeech(string command)
                         //WIRES SOLVER.
                         case Solvers.Wires:
                             if (_defusingModule == null)
-                            {
-                                if (command == "done") return "You must give a color";
-
-                                var defusingModule = new Wires(_bomb);
-                                defusingModule.AppendWire(command);
-                                _defusingModule = defusingModule;
-
-                                return $"{command}; next.";
-                            }
-
+                                _defusingModule = new Wires(_bomb);
+
                             var wires = (Wires)_defusingModule;
 
                             if (command == "done")
@@ -253,6 +245,11 @@ public string AnalyzeSpeech(string command)
                                 return "Done; " + wires.Solve();
                             }
 
+                            if (command == "wrong")
+                            {
+                                return wires.WireCount < 1 ? "To delete a wire, you must first give one." : wires.DeletePreviousWire();
+                            }
+
                             wires.AppendWire(command);
 
                             if (wires.WireCount != 6) return $"{command}; next.";