# app/utils/helpers.py
import secrets
import string
from fastapi import Request


def get_client_ip(request: Request) -> str:
    forwarded = request.headers.get("X-Forwarded-For")
    if forwarded:
        return forwarded.split(",")[0].strip()
    real_ip = request.headers.get("X-Real-IP")
    if real_ip:
        return real_ip.strip()
    return request.client.host if request.client else "unknown"


def generate_code(length: int = 6) -> str:
    chars = string.ascii_uppercase + string.digits
    chars = chars.translate(str.maketrans("", "", "0O1I"))
    return "".join(secrets.choice(chars) for _ in range(length))