Prevent duplicate/overwritten keys

src/Editor/Editor.php

@@ -2,6 +2,7 @@
 
 namespace NoccyLabs\JsonEdit\Editor;
 
+use Exception;
 use NoccyLabs\JsonEdit\List\TreeList;
 use NoccyLabs\JsonEdit\Settings;
 use NoccyLabs\JsonEdit\Terminal\Terminal;
@@ -590,10 +591,14 @@ class Editor
         if ($parent->node instanceof ObjectNode) {
             $newVal = $this->ask("\e[0;33mnew key:\e[0m ", $entry->key);
             if (!empty($newVal)) {
+                try {
                     $parent->node->rename($entry->key, $newVal);
                     $entry->key = $newVal;
-                $this->list->parseTree();
                     $this->redrawEditor();
+                } catch (Exception $e) {
+                    $this->redrawEditor();
+                    $this->showMessage("\e[97;41m".$e->getMessage());
+                }
             }
         } else {
             // $this->term->setCursor(1, $h);
@@ -679,6 +684,10 @@ class Editor
                 $this->redrawInfoBar();
                 return;
             }
+            if ($node->hasKey($key)) {
+                $this->showMessage("\e[97;41mThe key {$key} already exists");
+                return;
+            }
         }
 
         if ($value === null)

src/List/TreeList.php

@@ -131,19 +131,6 @@ class TreeList implements Countable, IteratorAggregate
             $path = dirname($path);
         }
 
-        // $depth = $this->getEntryForIndex($index)->depth;
-        // if ($ignoreSelf) $depth = max(0, $depth - 1);
-        // echo "{start={$depth}}"; sleep(1);
-        // while ($index >= 0) {
-        //     $entry = $this->getEntryForIndex($index);
-        //     if ($entry->depth < $depth) {
-        //         $node = $entry->node;
-        //         if ($node instanceof ArrayNode || $node instanceof ObjectNode) {
-        //             return $index;
-        //         }
-        //     }
-        //     $index--;
-        // }
         return null;
     }
 

src/Tree/ObjectNode.php

@@ -15,8 +15,16 @@ class ObjectNode extends Node implements CollapsibleNode
         $this->properties[$key] = $value;
     }
 
+    public function hasKey(string $key): bool
+    {
+        return array_key_exists($key, $this->properties);
+    }
+
     public function rename(string $key, string $newKey)
     {
+        if (array_key_exists($newKey, $this->properties)) {
+            throw new \Exception("Key {$newKey} already exists");
+        }
         $renamed = [];
         foreach ($this->properties as $k=>$v) {
             $renamed[($k==$key)?$newKey:$k] = $v;