Source code for langchain_community.document_loaders.facebook_chat

import datetime
import json
from pathlib import Path
from typing import Iterator, Union

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: Union[str, Path]): """Initialize with a path.""" self.file_path = path
[docs] def lazy_load(self) -> Iterator[Document]: 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)} yield Document(page_content=text, metadata=metadata)