From d75adf8510c1cc2bb1608c4f337e96c790b74fd6 Mon Sep 17 00:00:00 2001
From: laentropia <aadrian887mh@gmail.com>
Date: Wed, 6 May 2026 20:20:45 -0600
Subject: [PATCH] addition: destroy graph

---
 include/graph.h |  5 +++--
 src/graph.c     | 18 ++++++++++++++++++
 2 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/include/graph.h b/include/graph.h
index d242263..844049a 100644
--- a/include/graph.h
+++ b/include/graph.h
@@ -10,7 +10,8 @@ typedef struct Edge Edge;
 typedef enum {
     GRAPH_OK,
     GRAPH_BAD_ALLOC,
-    GRAPH_NOT_FOUND,
+    GRAPH_VERTEX_NOT_FOUND,
+    GRAPH_NULL_ARG,
 } GraphErr ;
 
 typedef enum {
@@ -19,7 +20,7 @@ typedef enum {
 } GraphType;
 
 Graph *graph_create(GraphType type);
-GraphErr graph_destroy(Graph *graph);
+GraphErr graph_destroy(Graph **graph);
 
 GraphErr graph_add_vertex(Graph *graph);
 
diff --git a/src/graph.c b/src/graph.c
index c036189..6fa8f88 100644
--- a/src/graph.c
+++ b/src/graph.c
@@ -34,3 +34,21 @@ Graph *graph_create(GraphType type) {
 
     return graph;
 }
+
+GraphErr graph_destroy(Graph **graph) {
+    if (graph == NULL || *graph) {
+        return GRAPH_NULL_ARG;
+    }
+
+    size_t vertex_count = arraylist_size((*graph)->vertices);
+
+    for (size_t i = 0; i < vertex_count; i++) {
+        Vertex vertex;
+        arraylist_get((*graph)->vertices, i, &vertex);
+        arraylist_destroy(&vertex.edges);
+    }
+
+    arraylist_destroy(&(*graph)->vertices);
+
+    return GRAPH_OK;
+}