refactor: Unify naming of direct/single/1:1/normal chats (#8442)

Unifies internal naming of single/direct/1:1/normal chats
to match the naming used in the API.

Closes: #8368
Signed-off-by: Jagoda Ślązak <jslazak@jslazak.com>

---------

Signed-off-by: Jagoda Ślązak <jslazak@jslazak.com>

deltachat-rpc-client/src/deltachat_rpc_client/account.py

@@ -186,7 +186,7 @@ class Account:
         return [Contact(self, contact_id) for contact_id in contact_ids]
 
     def create_chat(self, account: "Account") -> Chat:
-        """Create a 1:1 chat with another account."""
+        """Create a single chat with another account."""
         return self.create_contact(account).create_chat()
 
     def get_device_chat(self) -> Chat:
@@ -222,7 +222,7 @@ class Account:
         return [AttrDict(contact=Contact(self, contact["id"]), **contact) for contact in contacts]
 
     def get_chat_by_contact(self, contact: Union[int, Contact]) -> Optional[Chat]:
-        """Return 1:1 chat for a contact if it exists."""
+        """Return single chat for a contact if it exists."""
         if isinstance(contact, Contact):
             assert contact.account == self
             contact_id = contact.id

deltachat-rpc-client/src/deltachat_rpc_client/chat.py

@@ -252,7 +252,7 @@ class Chat:
     def get_contacts(self) -> list[Contact]:
         """Get the contacts belonging to this chat.
 
-        For single/direct chats self-address is not included.
+        For single chats self-address is not included.
         """
         contacts = self._rpc.get_chat_contacts(self.account.id, self.id)
         return [Contact(self.account, contact_id) for contact_id in contacts]

deltachat-rpc-client/src/deltachat_rpc_client/const.py

@@ -97,7 +97,7 @@ class ChatType(str, Enum):
     """Chat type."""
 
     SINGLE = "Single"
-    """1:1 chat, i.e. a direct chat with a single contact"""
+    """Single chat (a chat with a with a single contact)"""
 
     GROUP = "Group"
 

deltachat-rpc-client/src/deltachat_rpc_client/contact.py

@@ -55,7 +55,7 @@ class Contact:
         return snapshot
 
     def create_chat(self) -> "Chat":
-        """Create or get an existing 1:1 chat for this contact."""
+        """Create or get an existing single chat for this contact."""
         from .chat import Chat
 
         return Chat(

deltachat-rpc-client/src/deltachat_rpc_client/pytestplugin.py

@@ -104,7 +104,7 @@ class ACFactory:
         return ac_clone
 
     def get_accepted_chat(self, ac1: Account, ac2: Account) -> Chat:
-        """Create a new 1:1 chat between ac1 and ac2 accepted on both sides.
+        """Create a new single chat between ac1 and ac2 accepted on both sides.
 
         Returned chat is a chat with ac2 from ac1 point of view.
         """