"""
Author: Michel Peltriaux
Organization: Struktur- und Genehmigungsdirektion Nord, Rhineland-Palatinate, Germany
Contact: michel.peltriaux@sgdnord.rlp.de
Created on: 17.09.21

"""
from uuid import UUID

from django.contrib import messages
from django.utils.translation import gettext_lazy as _
from django.http import HttpRequest, Http404


def format_german_float(num) -> str:
    """ Writes a float into a string based on german float notation

    10000.000  --> "10.000,00"

    Args:
        num (float): The number

    Returns:
        num (str): The number as german Gleitkommazahl
    """
    return format(num, "0,.2f").replace(",", "X").replace(".", ",").replace("X", ".")


def check_user_is_in_any_group(request: HttpRequest):
    """
    Checks for any group membership. Adds a message in case of having none.

    """
    user = request.user
    # Inform user about missing group privileges!
    groups = user.groups.all()
    if not groups:
        messages.info(
            request,
            _("+++ Attention: You are not part of any group. You won't be able to create, edit or do anything. Please contact an administrator. +++")
        )
    return request

def check_id_is_valid_uuid(**kwargs: dict):
    uuid = kwargs.get("uuid", None) or kwargs.get("id", None)
    if uuid:
        try:
            # Check whether the id is a proper uuid or something that would break a db fetch
            UUID(uuid)
        except ValueError:
            raise Http404