from io import BytesIO
import logging
import re
import requests as r
import tarfile


BASE_URL = "https://arch.middleearth.fr"
DB_NAME = "casio.db"

def get_from_regex(regex, package, arch):
    file = BytesIO(r.get(f"{BASE_URL}/{arch}/{DB_NAME}").content)
    db = tarfile.open(fileobj=file)

    name = list(filter(
        lambda item: item.isdir() and package in item.name,
        db.getmembers()
    ))[0].name

    return regex.search(name).group(1)

def get_package_version(package, arch):
    regex = re.compile(".+-(\d+\.\d+(?:\.\d+)?)-\d+")

    version = get_from_regex(regex, package, arch)
    logging.debug(f"{package}: found {version}")

    return version

def get_package_tarball(package, arch):
    regex = re.compile("(.+)")

    tarball = get_from_regex(regex, package, arch) + f"-{arch}.pkg.tar.xz"
    logging.debug(f"{package}: found {tarball}")

    return tarball, f"{BASE_URL}/{arch}/{tarball}"