Refactor ServerUtilsConfig#set to delete existing objects at path

Bukkit/src/main/java/net/frankheijden/serverutils/bukkit/entities/BukkitYamlConfig.java

@@ -54,10 +54,15 @@ public class BukkitYamlConfig implements ServerUtilsConfig {
     }
 
     @Override
-    public void set(String path, Object value) {
+    public void setUnsafe(String path, Object value) {
         config.set(path, value);
     }
 
+    @Override
+    public void remove(String path) {
+        config.set(path, null);
+    }
+
     @Override
     public String getString(String path) {
         return config.getString(path);

Bungee/src/main/java/net/frankheijden/serverutils/bungee/entities/BungeeYamlConfig.java

@@ -33,7 +33,13 @@ public class BungeeYamlConfig implements ServerUtilsConfig {
 
     @Override
     public Object get(String path) {
-        Object obj = config.get(path);
+        Object obj;
+        try {
+            obj = config.get(path);
+        } catch (ClassCastException ignored) {
+            return null;
+        }
+
         if (obj instanceof Configuration) {
             return new BungeeYamlConfig((Configuration) obj);
         }
@@ -61,10 +67,15 @@ public class BungeeYamlConfig implements ServerUtilsConfig {
     }
 
     @Override
-    public void set(String path, Object value) {
+    public void setUnsafe(String path, Object value) {
         config.set(path, value);
     }
 
+    @Override
+    public void remove(String path) {
+        config.set(path, null);
+    }
+
     @Override
     public String getString(String path) {
         return config.getString(path);

Common/src/main/java/net/frankheijden/serverutils/common/config/JsonConfig.java

@@ -137,7 +137,7 @@ public class JsonConfig implements ServerUtilsConfig {
     }
 
     @Override
-    public void set(String path, Object value) {
+    public void setUnsafe(String path, Object value) {
         int lastDotIndex = path.lastIndexOf('.');
 
         String memberName = path;
@@ -158,6 +158,20 @@ public class JsonConfig implements ServerUtilsConfig {
         jsonObject.add(memberName, gson.toJsonTree(value));
     }
 
+    @Override
+    public void remove(String path) {
+        int lastDotIndex = path.lastIndexOf('.');
+
+        JsonObject object;
+        if (lastDotIndex == -1) {
+            object = config;
+        } else {
+            object = ((JsonConfig) get(path.substring(0, lastDotIndex))).config;
+        }
+
+        object.remove(path.substring(lastDotIndex + 1));
+    }
+
     @Override
     public String getString(String path) {
         JsonElement element = getJsonElement(path);

Common/src/main/java/net/frankheijden/serverutils/common/config/ServerUtilsConfig.java

@@ -40,7 +40,31 @@ public interface ServerUtilsConfig {
      * @param path The path.
      * @param value The object to set the path's value to.
      */
-    void set(String path, Object value);
+    default void set(String path, Object value) {
+        if (value == null) {
+            remove(path);
+        } else {
+            String pathSegment = path;
+
+            int lastDotIndex;
+            while ((lastDotIndex = pathSegment.lastIndexOf('.')) != -1) {
+                String parentPath = path.substring(0, lastDotIndex);
+                if (!(get(parentPath) instanceof ServerUtilsConfig)) {
+                    remove(parentPath);
+                }
+                pathSegment = parentPath;
+            }
+
+            setUnsafe(path, value);
+        }
+    }
+
+    void setUnsafe(String path, Object value);
+
+    /**
+     * Removes a path.
+     */
+    void remove(String path);
 
     /**
      * Retrieves a string from a path.
@@ -122,7 +146,7 @@ public interface ServerUtilsConfig {
             String defKey = (root.isEmpty() ? "" : root + ".") + key;
             Object value = conf.get(key);
             if (def.get(defKey) == null) {
-                conf.set(key, null);
+                conf.remove(key);
             } else if (value instanceof ServerUtilsConfig) {
                 removeOldKeys(def, (ServerUtilsConfig) value, defKey);
             }

Velocity/src/main/java/net/frankheijden/serverutils/velocity/entities/VelocityTomlConfig.java

@@ -56,21 +56,13 @@ public class VelocityTomlConfig implements ServerUtilsConfig {
     }
 
     @Override
-    public void set(String path, Object value) {
+    public void setUnsafe(String path, Object value) {
-        if (value == null) {
+        config.set(path, value);
-            config.remove(path);
+    }
-        } else {
+
-            int lastDotIndex = path.lastIndexOf('.');
+    @Override
-            if (lastDotIndex != -1) {
+    public void remove(String path) {
-                String parentPath = path.substring(0, lastDotIndex);
+        config.remove(path);
-                try {
-                    CommentedConfig parent = config.get(parentPath);
-                } catch (ClassCastException ex) {
-                    config.remove(parentPath);
-                }
-            }
-            config.set(path, value);
-        }
     }
 
     @Override