Source code for langchain_community.document_loaders.facebook_chat
import datetime
import json
from pathlib import Path
from typing import List
from langchain_core.documents import Document
from langchain_community.document_loaders.base import BaseLoader
[docs]def concatenate_rows(row: dict) -> str:
"""Combine message information in a readable format ready to be used.
Args:
row: dictionary containing message information.
"""
sender = row["sender_name"]
text = row["content"]
date = datetime.datetime.fromtimestamp(row["timestamp_ms"] / 1000).strftime(
"%Y-%m-%d %H:%M:%S"
)
return f"{sender} on {date}: {text}\n\n"
[docs]class FacebookChatLoader(BaseLoader):
"""Load `Facebook Chat` messages directory dump."""
[docs] def __init__(self, path: str):
"""Initialize with a path."""
self.file_path = path
[docs] 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.get("content") and isinstance(message["content"], str)
)
metadata = {"source": str(p)}
return [Document(page_content=text, metadata=metadata)]