fix condition

fet2020/documents/api.py

@@ -56,7 +56,21 @@ def get_ep_group(ep_group_name: str = "fet") -> dict[str, str]:
     return ep_group
 
 
-def ep_pad_exists(pad_id: str | None = None):
+def ep_pad_exists(pad_id: str | None = None) -> (bool | None):
+    """ Check if pad exists.
+
+    Parameters
+    ----------
+    pad_id : str | None
+        Id of pad that is checked if it exists.
+
+    Returns
+    -------
+    bool | None
+        - True: Pad exists.
+        - False: Pad doesn't exist.
+        - None: There is no pad id or no connection to etherpad server.
+    """
     if pad_id is None:
         return None
 
@@ -90,7 +104,7 @@ def ep_create_new_pad(pad_id: str | None, text="helloworld"):
     if (ep_group := get_ep_group()) is None:
         return None
 
-    if ep_pad_exists(pad_id) is True:
+    if ep_pad_exists(pad_id) is False:
         ep_c.createGroupPad(groupID=ep_group["groupID"], padName=pad_id, text=text)
         logger.info(f"Create new etherpad. Pad: {pad_id}")
         return pad_id