Enhance OxiAPI and Node classes with type hints and property updates

- Updated the `OxiAPI` class to check for `None` explicitly when setting authentication credentials.
- Added type hints to the `Node` class and introduced a TODO for future enhancements.
- Refactored properties in the `NodeView` class to include type hints and improved handling of optional data retrieval.

oxi/core.py

@@ -3,6 +3,7 @@ from requests import Session
 from .node import Node
 
 
+# TODO: Add custom adapter for Oxi
 class OxiAPI:
     def __init__(
         self,
@@ -14,7 +15,7 @@ class OxiAPI:
         self.base_url = url.rstrip("/")
         self._session = Session()
         self._session.verify = verify
-        if username and password:
+        if username is not None and password is not None:
             self._session.auth = (username, password)
         self.node = Node(self._session, self.base_url)
 

oxi/node.py

@@ -7,11 +7,11 @@ if TYPE_CHECKING:
     from requests import Session
 
 
+# TODO: Add type hints
 class Node:
     def __init__(self, session: "Session", base_url: str):
         self._session = session
         self._base_url = base_url
-        self._data = None
 
     def __call__(self, name: str) -> NodeView:
         url = f"{self._base_url}/node/show/{name}"

oxi/view.py

@@ -20,36 +20,41 @@ class NodeView:
         return response.status_code
 
     @property
-    def ip(self):
+    def name(self) -> str:
+        return self._data.get("name")
+
+    @property
+    def ip(self) -> str:
         return self._data.get("ip")
 
     @property
-    def full_name(self):
+    def full_name(self) -> str:
         return self._data.get("full_name")
 
     @property
-    def group(self):
+    def group(self) -> str:
         return self._data.get("group")
 
     @property
-    def model(self):
+    def model(self) -> str:
         return self._data.get("model")
 
     @property
-    def last_status(self):
+    def last_status(self) -> str:
-        return self._data.get("last").get("status")
+        last = self._data.get("last") or {}
+        return last.get("status")
 
     @property
-    def last_check(self):
+    def last_check(self) -> str:
-        return self._data.get("last").get("start")
+        last = self._data.get("last") or {}
+        return last.get("start")
 
-    @property
+    def refresh(self) -> str:
-    def refresh(self):
         result = self._updater()
         if result != 200:
             raise ValueError(f"Failed to refresh node {self.full_name}")
         return "OK"
 
     @cached_property
-    def config(self):
+    def config(self) -> NodeConfig:
         return NodeConfig(self._session, self.full_name, self.model, self._base_url)