Chore: add type hints

src/aura_engine/core/client.py

@@ -44,12 +44,12 @@ class CoreClient:
 
     skip_log_commands = ("aura_engine.status", "mixer.volume")
 
-    instance = None
+    instance: CoreClient
     logger: logging.Logger
     config: confuse.Configuration
     connection = None
     event_dispatcher = None
-    conn = None
+    conn: CoreConnection
 
     def __init__(self, event_dispatcher):
         """
@@ -80,7 +80,7 @@ class CoreClient:
             if not self.conn.is_connected():
                 self.conn.open()
         except CoreConnectionError as e:
-            self.logger.critical(SU.red(e.message))
+            self.logger.critical(SU.red(str(e)))
 
     @synchronized
     def disconnect(self):
@@ -231,10 +231,10 @@ class CoreConnection:
 
     logger: logging.Logger
     config: confuse.Configuration
-    socket_path = None
-    socket = None
-    connected = None
-    message = None
+    socket_path: str
+    socket: socket.socket
+    connected: bool
+    message: str
 
     def __init__(self):
         """
@@ -248,7 +248,6 @@ class CoreConnection:
 
         self.connected = False
         self.message = ""
-        self.socket = None
 
     def is_connected(self):
         """
@@ -286,7 +285,7 @@ class CoreConnection:
         """
         if self.connected:
             message = "quit\r"
-            self.socket.sendall(message.decode(CoreConnection.ENCODING))
+            self.socket.sendall(message.encode(CoreConnection.ENCODING))
             self.socket.close()
             self.connected = False
 
@@ -378,6 +377,7 @@ class CoreConnection:
                 msg = "Unknown error while socket.read()"
                 self.logger.error(SU.red(msg), e)
             return self.message
+        # FIXME: return str if no tests depend on this None.
         return None