from pathlib import Path
import urllib
import os

def project_dir_path(root_dir:str):
    """Create project directories (data, artifacts, model) and return their paths."""
    path_list = [os.path.join(root_dir, dir_) for dir_ in ["data", "artifacts", "model"]]
    for p in path_list:
        os.makedirs(p, exist_ok=True)
    return path_list

def txt_file_downloader(url: str, data_dir: str, file_name: str) -> str:
    """Download a text file if missing and return its contents as a string."""
    file_path = Path(data_dir).joinpath(file_name)
    if not file_path.is_file():
        file_path.parent.mkdir(parents=True, exist_ok=True)
        urllib.request.urlretrieve(url=url, filename=file_path)
    return file_path.read_text(encoding="utf-8")

ASSETS_DIR = Path(__file__).parent.parent / "assets"

def load_css():
    return (ASSETS_DIR / "css/theme.css").read_text(encoding="utf-8")

def load_markdown(name):
    return (ASSETS_DIR / f"markdown/{name}.md").read_text(encoding="utf-8")