Cleanup parse_metadata

Signed-off-by: rany2 <[email protected]>

src/edge_tts/communicate.py

@@ -353,7 +353,7 @@ async def send_ssml_request() -> bool:
  )
  return True
 
- def parse_metadata():
+ def parse_metadata() -> Dict[str, Any]:
  for meta_obj in json.loads(data)["Metadata"]:
  meta_type = meta_obj["Type"]
  if meta_type == "WordBoundary":
@@ -365,10 +365,10 @@ def parse_metadata():
  "duration": current_duration,
  "text": meta_obj["Data"]["text"]["Text"],
  }
- elif meta_type in ("SessionEnd",):
+ if meta_type in ("SessionEnd",):
  continue
- else:
-  raise UnknownResponse(f"Unknown metadata type: {meta_type}")
+ raise UnknownResponse(f"Unknown metadata type: {meta_type}")
+ raise UnexpectedResponse("No WordBoundary metadata found")
 
  # Split the text into multiple strings if it is too long for the service.
  texts = split_text_by_byte_length(