import requests

#----------------base64 page processing------------
import base64
import re

doBase64Decoding = True

def fix_base64_string(encoded_string):
    missing_padding = len(encoded_string) % 4
    if missing_padding != 0:
        encoded_string += '=' * (4 - missing_padding)
    return encoded_string

def decode_base64_in_backticks(input_string):
    def base64_decode(match):
        encoded_data = match.group(0)[1:-1]  # Extract content within backticks
        decoded_bytes = base64.b64decode( fix_base64_string(encoded_data) )
        return decoded_bytes.decode()

    pattern = r"`[^`]+`"  # Regex pattern to find substrings within backticks
    decoded_string = re.sub(pattern, base64_decode, input_string)
    return decoded_string

def remove_empty_lines(text):
    lines = text.split('\n')  # Split the text into lines
    non_empty_lines = [line for line in lines if line.strip()]  # Filter out empty lines
    return '\n'.join(non_empty_lines)  # Join non-empty lines back together

def extract_base64_sections(base64_page):
    sections = base64_page.split("***")  # Split the input string by "***" to get sections
    formatted_sections = []
    for section in sections:
        formatted_section = remove_empty_lines( section.strip().replace("#### ", "").replace("\n\n", " - ").replace("\n", ", ") )
        if doBase64Decoding: formatted_section = decode_base64_in_backticks(formatted_section)
        #formatted_section = '[🔑Base64](https://fmhy.pages.dev/base64) ► ' + formatted_section
        formatted_sections.append(formatted_section)
    lines = formatted_sections
    return lines
#----------------</end>base64 page processing------------

doLocally = False

def main():
    if doLocally:
        with open('base64.md', 'r') as file:
            base64_page = file.read()
        sections_list = extract_base64_sections(base64_page)
        with open("base64_decoded.md", "w") as file:
            file.write( "\n".join(sections_list) )

    else:
        base64_page = requests.get("https://raw.githubusercontent.com/nbats/FMHYedit/main/" + 'base64.md').text
        sections_list = extract_base64_sections(base64_page)
        print( "\n\n".join(sections_list) )

if __name__ == "__main__":
    main()