T8323: vyos_vlan module

1 files changed, 79 insertions, 0 deletions

diff --git a/plugins/module_utils/vyos.py b/plugins/module_utils/vyos.py
index 5eda204..fedcc13 100644
--- a/plugins/module_utils/vyos.py
+++ b/plugins/module_utils/vyos.py
@@ -27,6 +27,85 @@ from ansible_collections.vyos.rest.plugins.module_utils.vyos_rest import (
 )
 
 
+# ---------------------------------------------------------------------------
+# Dynamic config utilities
+# ---------------------------------------------------------------------------
+
+
+def _kebab_to_snake(s):
+    """Convert kebab-case string to snake_case."""
+    return s.replace("-", "_")
+
+
+def _snake_to_kebab(s):
+    """Convert snake_case string to kebab-case."""
+    return s.replace("_", "-")
+
+
+def normalize(raw):
+    """Recursively normalize an API response dict to snake_case keys."""
+    if isinstance(raw, dict):
+        return {_kebab_to_snake(k): normalize(v) for k, v in raw.items()}
+    if isinstance(raw, list):
+        return [normalize(v) for v in raw]
+    return raw
+
+
+def denormalize_path(path):
+    """Convert a snake_case path list to kebab-case for the API."""
+    return [_snake_to_kebab(p) for p in path]
+
+
+def _diff_value(want_val, have_val, path, cmds, delete_missing):
+    if isinstance(want_val, dict):
+        if not want_val:
+            if not have_val:
+                cmds.append(("set", denormalize_path(path)))
+        else:
+            have_dict = have_val if isinstance(have_val, dict) else {}
+            _diff_dict(want_val, have_dict, path, cmds, delete_missing)
+    elif isinstance(want_val, list):
+        have_set = set(have_val) if isinstance(have_val, list) else set()
+        for item in want_val:
+            if item not in have_set:
+                cmds.append(("set", denormalize_path(path + [str(item)])))
+        if delete_missing:
+            want_set = set(str(i) for i in want_val)
+            for item in have_val or []:
+                if str(item) not in want_set:
+                    cmds.append(("delete", denormalize_path(path + [str(item)])))
+    else:
+        if want_val != have_val:
+            cmds.append(("set", denormalize_path(path + [str(want_val)])))
+
+
+def _diff_dict(want, have, path, cmds, delete_missing):
+    for key, want_val in want.items():
+        _diff_value(want_val, have.get(key), path + [key], cmds, delete_missing)
+    if delete_missing:
+        for key in have:
+            if key not in want:
+                cmds.append(("delete", denormalize_path(path + [key])))
+
+
+def diff_configs(want, have, base_path, delete_missing=False):
+    """Diff two normalized config dicts and return API command tuples.
+
+    Args:
+        want (dict): Desired configuration (snake_case keys).
+        have (dict): Current configuration (snake_case keys).
+        base_path (list): Base API path for commands.
+        delete_missing (bool): Generate delete commands for keys in
+            ``have`` absent from ``want``.
+
+    Returns:
+        list: Tuples of ``("set", path)`` or ``("delete", path)``.
+    """
+    cmds = []
+    _diff_dict(want, have, base_path, cmds, delete_missing)
+    return cmds
+
+
 class VyOSModule:
     """Thin wrapper around VyOSRestClient for resource modules.