from typing import List
from typing import NoReturn

import streamlit as st
from langchain.docstore.document import Document
from streamlit.logger import get_logger

from knowledge_gpt.core.parsing import File

logger = get_logger(__name__)


def wrap_doc_in_html(docs: List[Document]) -> str:
    """Wraps each page in document separated by newlines in <p> tags"""
    text = [doc.page_content for doc in docs]
    if isinstance(text, list):
        # Add horizontal rules between pages
        text = "\n<hr/>\n".join(text)
    return "".join([f"<p>{line}</p>" for line in text.split("\n")])


def is_query_valid(query: str) -> bool:
    if not query:
        st.error("Please enter a question!")
        return False
    return True


def is_file_valid(file: File) -> bool:
    if len(file.docs) == 0 or "".join([doc.page_content for doc in file.docs]).strip() == "":
        st.error("Cannot read document! Make sure the document has selectable text")
        logger.error("Cannot read document")
        return False
    return True


def display_file_read_error(e: Exception, file_name: str) -> NoReturn:
    st.error("Error reading file. Make sure the file is not corrupted or encrypted")
    logger.error(f"{e.__class__.__name__}: {e}. Extension: {file_name.split('.')[-1]}")
    st.stop()