from typing import Any, Dict

from django.conf import settings

from zerver.lib.upload import upload_backend
from zerver.models import Realm

def get_realm_logo_url(realm: Realm, night: bool) -> str:
    if night:
        logo_source = realm.night_logo_source
        logo_version = realm.night_logo_version
    else:
        logo_source = realm.logo_source
        logo_version = realm.logo_version
    if logo_source == 'U':
        return upload_backend.get_realm_logo_url(realm.id, logo_version, night)
    return settings.DEFAULT_LOGO_URI+'?version=0'

def get_realm_logo_data(realm: Realm, night: bool) -> Dict[str, Any]:
    if night:
        return dict(night_logo_url=get_realm_logo_url(realm, night),
                    night_logo_source=realm.night_logo_source)
    return dict(logo_url=get_realm_logo_url(realm, night),
                logo_source=realm.logo_source)