autotailor: Refactor import_json_tailoring

utils/autotailor

@@ -274,22 +274,7 @@ class Tailoring:
         with open(location, "w") if location != "-" else sys.stdout as f:
             f.write(pretty_xml)
 
-    def import_json_tailoring(self, json_tailoring):
-        with open(json_tailoring, "r") as jf:
-            all_tailorings = json.load(jf)
-
-        if 'profiles' in all_tailorings and all_tailorings['profiles']:
-            if len(all_tailorings['profiles']) > 1:
-                raise ValueError("The autotailor tool currently does not support multi-profile JSON tailoring.")
-            tailoring = all_tailorings['profiles'][0]
-        else:
-            raise ValueError("JSON Tailoring does not define any profiles.")
-
-        self.extends = tailoring["base_profile_id"]
-
-        self.profile_id = tailoring.get("id", self.profile_id)
-        self.profile_title = tailoring.get("title", self.profile_title)
-
+    def _import_groups_from_tailoring(self, tailoring):
         if "groups" in tailoring:
             for group_id, props in tailoring["groups"].items():
                 if "evaluate" in props:
@@ -298,6 +283,15 @@ class Tailoring:
                     else:
                         self.groups_to_unselect.append(group_id)
 
+    def _import_variables_from_tailoring(self, tailoring):
+        if "variables" in tailoring:
+            for variable_id, props in tailoring["variables"].items():
+                if "value" in props:
+                    self.add_value_change(variable_id, props["value"])
+                if "option_id" in props:
+                    self.change_value_attribute(variable_id, "selector", props["option_id"])
+
+    def _import_rules_from_tailoring(self, tailoring):
         if "rules" in tailoring:
             for rule_id, props in tailoring["rules"].items():
                 if "evaluate" in props:
@@ -309,12 +303,25 @@ class Tailoring:
                     if attr in props:
                         self.change_rule_attribute(rule_id, attr, props[attr])
 
-        if "variables" in tailoring:
-            for variable_id, props in tailoring["variables"].items():
-                if "value" in props:
-                    self.add_value_change(variable_id, props["value"])
-                if "option_id" in props:
-                    self.change_value_attribute(variable_id, "selector", props["option_id"])
+    def import_json_tailoring(self, json_tailoring):
+        with open(json_tailoring, "r") as jf:
+            all_tailorings = json.load(jf)
+
+        if 'profiles' in all_tailorings and all_tailorings['profiles']:
+            if len(all_tailorings['profiles']) > 1:
+                raise ValueError("The autotailor tool currently does not support multi-profile JSON tailoring.")
+            tailoring = all_tailorings['profiles'][0]
+        else:
+            raise ValueError("JSON Tailoring does not define any profiles.")
+
+        self.extends = tailoring["base_profile_id"]
+
+        self.profile_id = tailoring.get("id", self.profile_id)
+        self.profile_title = tailoring.get("title", self.profile_title)
+
+        self._import_groups_from_tailoring(tailoring)
+        self._import_rules_from_tailoring(tailoring)
+        self._import_variables_from_tailoring(tailoring)
 
 
 def get_parser():