from urllib.parse import urlparse, urlunparse
from sqlalchemy import create_engine, MetaData, Table, select, update, and_

def normalize_url(url: str) -> str:
    if not url: return ""
    url = url.strip()
    parsed = urlparse(url)
    scheme = parsed.scheme.lower()
    netloc = parsed.netloc.lower()
    path = parsed.path.rstrip('/')
    if not path: path = ""
    return urlunparse((scheme, netloc, path, parsed.params, parsed.query, ""))

def make_response(code: int, msg: str, data: any = None):
    return {"code": code, "msg": msg, "data": data}