# Functions not dependent on advlabdb

from flask import flash
from markupsafe import Markup


def flashRandomPassword(password):
    flash(f"Random password: {password}", category="warning")


def parse_bool(str):
    str_lower = str.lower()
    if str_lower == "false":
        return False
    elif str_lower == "true":
        return True
    else:
        raise ValueError(f'Can not parse a bool from "{str}"')


def missing_formatter(view, context, model, name):
    attr = getattr(model, name)
    if attr is None:
        return Markup("<span style='color:red'>MISSING</span>")

    return attr


def str_without_semester_formatter(view, context, model, name):
    attr = getattr(model, name)
    if attr is not None:
        return attr.str_without_semester()

    return attr