[api] refactoring: caching directory for root user is now /var/cache/bauh

bauh/api/abstract/model.py

@@ -146,7 +146,7 @@ class SoftwarePackage(ABC):
         """
         :return: base cache path for the specific app type
         """
-        return CACHE_PATH + '/' + self.get_type()
+        return f'{CACHE_PATH}/{self.get_type()}'
 
     def can_be_updated(self) -> bool:
         """

bauh/api/paths.py

@@ -1,8 +1,9 @@
 from pathlib import Path
 
+from bauh import __app_name__
 from bauh.api import user
 
-CACHE_PATH = '{}/.cache/bauh'.format(str(Path.home()))
+CACHE_PATH = f'/var/cache/{__app_name__}' if user.is_root() else f'{Path.home()}/.cache/{__app_name__}'
 CONFIG_PATH = '{}/.config/bauh'.format(str(Path.home()))
 USER_THEMES_PATH = '{}/.local/share/bauh/themes'.format(str(Path.home()))
 DESKTOP_ENTRIES_DIR = '{}/.local/share/applications'.format(str(Path.home()))

bauh/api/user.py

@@ -1,5 +1,6 @@
 import os
+from typing import Optional
 
 
-def is_root():
-    return os.getuid() == 0
+def is_root(user_id: Optional[int] = None):
+    return user_id == 0 if user_id is not None else os.getuid() == 0