import hashlib
import html
import random
import secrets
import string
from datetime import datetime, timedelta

from service.conf import settings

POOL_NAME = (
    f"frontend-api-{settings.PROFILE}-user-pool"
    if settings.PROFILE in ["live", "test"]
    else "frontend-api-devel-user-pool"
)


def make_iso_date_now():
    return f'{datetime.utcnow().isoformat(timespec="microseconds")}Z'


def make_date_in_future(**kw):
    return f"{(datetime.utcnow() + timedelta(**kw)).date()}"


def make_random_hash() -> str:
    random_hash = hashlib.sha224("SCHEMA094u".encode())
    random_hash.update(make_iso_date_now().encode())
    random_hash.update(f"{random.random()}".encode())
    return random_hash.hexdigest()


def generate_password(length: int = 12) -> str:
    alphabet = string.ascii_letters + string.digits
    while True:
        password = "".join(secrets.choice(alphabet) for _ in range(length))
        if (
            any(c.islower() for c in password)
            and any(c.isupper() for c in password)
            and any(c.isdigit() for c in password)
        ):
            return password


def generate_schema_id(marker="c") -> str:
    return marker + make_random_hash()


def esc(ss):
    return html.escape(str(ss)).encode("ascii", "xmlcharrefreplace").decode("UTF-8")