from data.cat import Cat
import systems.ui as ui
import re


def check_cat_name(name):
    name = name.strip()
    if not name:
        return "Please choose a name:"
    if len(name) > 4 or len(name) < 20:
        return "Please choose a name greater than 4 charecters and less than 20:"
    if re.search(r"[^a-zA-Z \-']", name):
        return "Please only use letters, spaces, hyphens and apostrophes:"
    return "Ok"


def shelter():
    # TODO: make
    name = ui.text("Welcome to the shelter! Please choose a name for your cat:")
    while True:
        check_result = check_cat_name(name)
        if check_result != "Ok":
            name = ui.text(check_result)
        else:
            break
    return Cat(name)