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# First creating Document reader

from typing import List
from langchain.docstore.document import Document as LangchainDocument
from bs4 import BeautifulSoup
import re 


def read_wiki_html(filename: str) -> List[List]:
    """
    Reads an HTML file, extracts the contents of the <body> tag,
    finds all <figure> tags with their hrefs and <figcaption>,
    and returns the processed content as a string.

    Args:
        filename (str): The path to the HTML file.

    Returns:
        TEXT_KB: list of text extracted from the html 
        Figure_KB: list of figure captions extracted
    """
    try:
        with open(filename, 'r', encoding='utf-8') as file:
            content = file.read()

        # Parse the HTML content
        soup = BeautifulSoup(content, 'html.parser')

        # Focus only on the <body> tag
        body = soup.body
        if body is None:
            return "Error: No <body> tag found in the HTML file."
        
        body_text =  re.sub(r'\n+', '\n', body.get_text(separator="\n").strip())

        
        TEXT_KB = [
            LangchainDocument(page_content=body_text)
        ]


        # Extract all <figure> tags with their href and figcaption
        FIG_KB = []
        for figure in body.find_all('figure'):
            href = figure.find('a').get('href', 'No href') if figure.find('a') else 'No href'
            figcaption = figure.find('figcaption').get_text(strip=True) if figure.find('figcaption') else 'No figcaption'
            # figure_details.append(f"Figure: href={href}, figcaption={figcaption}")
            FIG_KB.append(
                LangchainDocument(page_content=figcaption, metadata={"url": href})
            )

        # Join the details into a single string
        return (TEXT_KB, FIG_KB)

    except FileNotFoundError:
        return f"Error: File '{filename}' not found."
    except Exception as e:
        return f"Error: {str(e)}"

if __name__=="__main__":
    contents = read_wiki_html("_data/MS Dhoni - Wikipedia.htm")
    # read_pdf()
    pass