From de1b539fb68fc49324fc7a2d0003f6b54c659932 Mon Sep 17 00:00:00 2001
From: Cristi <cristian.ciobanu.it@gmail.com>
Date: Tue, 17 Mar 2026 15:29:58 +0200
Subject: [PATCH] Enhancement Added link type support on the server side

---
 gns3server/schemas/controller/links.py |  3 +++
 tests/controller/test_link.py          | 37 ++++++++++++++++++++++++++
 2 files changed, 40 insertions(+)

diff --git a/gns3server/schemas/controller/links.py b/gns3server/schemas/controller/links.py
index cdcf6047f..606d267af 100644
--- a/gns3server/schemas/controller/links.py
+++ b/gns3server/schemas/controller/links.py
@@ -47,6 +47,9 @@ class LinkStyle(BaseModel):
     color: Optional[str] = None
     width: Optional[int] = None
     type: Optional[int] = None
+    link_type: Optional[str] = None
+    bezier_curviness: Optional[int] = None
+    flowchart_roundness: Optional[int] = None
 
 
 class LinkBase(BaseModel):
diff --git a/tests/controller/test_link.py b/tests/controller/test_link.py
index 1448585e3..88091e12b 100644
--- a/tests/controller/test_link.py
+++ b/tests/controller/test_link.py
@@ -381,3 +381,40 @@ async def test_available_filters(project, compute):
     node2._ports = [EthernetPort("E0", 0, 0, 4)]
     await link.add_node(node2, 0, 4)
     assert len(link.available_filters()) > 0
+
+
+@pytest.mark.asyncio
+async def test_update_link_style(project, compute):
+
+    node1 = Node(project, compute, "node1", node_type="qemu")
+    node1._ports = [EthernetPort("E0", 0, 0, 4)]
+    node2 = Node(project, compute, "node2", node_type="qemu")
+    node2._ports = [EthernetPort("E0", 0, 1, 3)]
+
+    link = Link(project)
+    link.create = AsyncioMagicMock()
+    link._project.emit_notification = MagicMock()
+    project.dump = MagicMock()
+
+    await link.add_node(node1, 0, 4)
+    await link.add_node(node2, 1, 3)
+
+    await link.update_link_style({
+        "color": "#00ff00",
+        "width": 3,
+        "type": 1,
+        "link_type": "flowchart",
+        "bezier_curviness": 150,
+        "flowchart_roundness": 20,
+    })
+
+    assert link.asdict()["link_style"] == {
+        "color": "#00ff00",
+        "width": 3,
+        "type": 1,
+        "link_type": "flowchart",
+        "bezier_curviness": 150,
+        "flowchart_roundness": 20,
+    }
+    link._project.emit_notification.assert_called_with("link.updated", link.asdict())
+    assert project.dump.called