forked from Archives/langchain
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
40 lines
1.1 KiB
Python
40 lines
1.1 KiB
Python
"""Loader that loads Telegram chat json dump."""
|
|
import json
|
|
from pathlib import Path
|
|
from typing import List
|
|
|
|
from langchain.docstore.document import Document
|
|
from langchain.document_loaders.base import BaseLoader
|
|
|
|
|
|
def concatenate_rows(row: dict) -> str:
|
|
"""Combine message information in a readable format ready to be used."""
|
|
date = row["date"]
|
|
sender = row["from"]
|
|
text = row["text"]
|
|
return f"{sender} on {date}: {text}\n\n"
|
|
|
|
|
|
class TelegramChatLoader(BaseLoader):
|
|
"""Loader that loads Telegram chat json directory dump."""
|
|
|
|
def __init__(self, path: str):
|
|
"""Initialize with path."""
|
|
self.file_path = path
|
|
|
|
def load(self) -> List[Document]:
|
|
"""Load documents."""
|
|
p = Path(self.file_path)
|
|
|
|
with open(p, encoding="utf8") as f:
|
|
d = json.load(f)
|
|
|
|
text = "".join(
|
|
concatenate_rows(message)
|
|
for message in d["messages"]
|
|
if message["type"] == "message" and isinstance(message["text"], str)
|
|
)
|
|
metadata = {"source": str(p)}
|
|
|
|
return [Document(page_content=text, metadata=metadata)]
|