Added Enum ArgumentType

Author: RealMangorage

src/main/java/org/mangorage/mangobotcore/api/command/v1/argument/types/EnumArgumentType.java

@@ -0,0 +1,26 @@
+package org.mangorage.mangobotcore.api.command.v1.argument.types;
+
+import org.mangorage.mangobotcore.api.command.v1.argument.ArgumentParseException;
+import org.mangorage.mangobotcore.api.command.v1.argument.ArgumentType;
+
+public final class EnumArgumentType<E extends Enum<E>> extends ArgumentType<E> {
+    public static <E extends Enum<E>> EnumArgumentType<E> of(Class<E> enumClass) {
+        return new EnumArgumentType<>(enumClass);
+    }
+
+    private final Class<E> enumClass;
+
+    private EnumArgumentType(Class<E> enumClass) {
+        this.enumClass = enumClass;
+    }
+
+    @Override
+    public E parse(String[] input, int startIndex) throws ArgumentParseException {
+        return Enum.valueOf(enumClass, input[startIndex]);
+    }
+
+    @Override
+    public String getString() {
+        return "";
+    }
+}

src/main/java/org/mangorage/mangobotcore/api/command/v1/argument/types/IntegerArgumentType.java

@@ -4,8 +4,6 @@
 import org.mangorage.mangobotcore.api.command.v1.argument.ArgumentType;
 
 public final class IntegerArgumentType extends ArgumentType<Integer> {
-    public static final ArgumentType<Integer> INSTANCE = new IntegerArgumentType();
-
     IntegerArgumentType() {}
 
     @Override