"""
    Utilities
    @author : Sakshi Tantak
"""
import streamlit as st
import base64

def markdown_table_to_json(markdown):
    lines = markdown.strip().split("\n")
    
    # Extract headers
    headers = [h.strip() for h in lines[0].split("|") if h.strip()]
    
    # Extract rows
    rows = []
    for line in lines[2:]:  # Skip header and separator line
        values = [v.strip() for v in line.split("|") if v.strip()]
        row_dict = dict(zip(headers, values))
        rows.append(row_dict)
    
    return rows

def validate_pdf(pdf_bytes: bytes) -> bool:
    """
    Validates the uploaded PDF file.
    """
    if not pdf_bytes:
        return False

    # Check file signature for PDF (%PDF-)
    return pdf_bytes.startswith(b'%PDF-')

def displayPDF(file):
    # Opening file from file path
    if isinstance(file, str):
        file_bytes = open(file, 'rb').read()
    else:
        file_bytes = file
    # with open(file, "rb") as f:
    base64_pdf = base64.b64encode(file_bytes).decode('utf-8')

    # Embedding PDF in HTML
    pdf_display = F'<embed src="data:application/pdf;base64,{base64_pdf}" width="700" height="1000" type="application/pdf">'

    # Displaying File
    st.markdown(pdf_display, unsafe_allow_html=True)