created common.py for extracting deep comparision function.

collection/plugins/module_utils/common.py

@@ -0,0 +1,36 @@
+import json
+
+def deep_equal(a, b):
+    """
+    Compare two data structures for deep equality by converting them to JSON strings.
+
+    Parameters:
+    a (any): First data structure to compare.
+    b (any): Second data structure to compare.
+
+    Returns:
+    bool: True if the two data structures are equal, False otherwise.
+    """
+    return json.dumps(a, sort_keys=True) == json.dumps(b, sort_keys=True)
+
+def get_changes(module_params, module_args_keys_list, current_config):
+    """
+    Function to get changes by comparing module parameters with current configuration.
+
+    Args:
+        module_params (dict): The parameters of the module.
+        module_args_keys_list (list): List of keys to check in module parameters.
+        current_config (dict): The current configuration to compare against.
+
+    Returns:
+        dict: A dictionary containing the changes.
+    """
+    changes = {}
+    
+    for key, value in module_params.items():
+        if key in module_args_keys_list:
+            if value is not None:
+                if not deep_equal(value, current_config.get(key)):
+                    changes[key] = value
+    
+    return changes

collection/plugins/modules/device_defaults.py

@@ -151,11 +151,9 @@ response:
 '''
 
 from ansible_collections.community.syncthing.plugins.module_utils.syncthing_api import SyncthingModule
+from ansible_collections.community.syncthing.plugins.module_utils.common import get_changes
 import json
 
-def deep_equal(a, b):
-    return json.dumps(a, sort_keys=True) == json.dumps(b, sort_keys=True)
-
 def run_module():
     module_args = dict(
         addresses=dict(type='list', required=False),