refactor: Replace 'private' with 'direct'.

Author: Ajnus

tests/conftest.py

@@ -450,7 +450,7 @@ def msg_template_factory(
     """
     Generate message template for all types of messages(stream/PM/group)
     """
-    # TODO: Separate Message into distinct types for stream and private messages.
+    # TODO: Separate Message into distinct types for stream and direct messages.
     message = Message(
         id=msg_id,
         sender_full_name="Foo Foo",

zulipterminal/model.py

@@ -1555,7 +1555,7 @@ def get_stream_by_id(streams: List[StreamData], stream_id: int) -> StreamData:
 
     def _handle_typing_event(self, event: Event) -> None:
         """
-        Handle typing notifications (in private messages)
+        Handle typing notifications (in direct messages)
         """
         assert event["type"] == "typing"
 

zulipterminal/ui_tools/messages.py

@@ -1017,7 +1017,7 @@ def keypress(self, size: urwid_Size, key: str) -> Optional[str]:
             self.model.controller.view.middle_column.set_focus("footer")
         elif is_command_key("EDIT_MESSAGE", key):
             # User can't edit messages of others that already have a subject
-            # For private messages, subject = "" (empty string)
+            # For direct messages, subject = "" (empty string)
             # This also handles the realm_message_content_edit_limit_seconds == 0 case
             if (
                 self.message["sender_id"] != self.model.user_id
@@ -1089,7 +1089,7 @@ def keypress(self, size: urwid_Size, key: str) -> Optional[str]:
                         )
                         return key
                 else:
-                    # The remaining case is of a private message not belonging to user.
+                    # The remaining case is of a direct message not belonging to user.
                     # Which should be already handled by the topmost if block
                     raise RuntimeError(
                         "Reached unexpected block. This should be handled at the top."