"""
This module contains functions for the server
"""
import time
from requests import ReadTimeout
from requests import ConnectionError as RequestConnectionError

from app.logger import log
from app.lib.artistlib import CheckArtistImages
from app.lib.populate import Populate, PopulateCancelledError

from app.utils.generators import get_random_str
from app.utils.network import Ping
from app.utils.threading import background

from app.settings import ParserFlags, get_flag, get_scan_sleep_time


@background
def run_periodic_scans():
    """
    Runs periodic scans.
    """
    # ValidateAlbumThumbs()
    # ValidatePlaylistThumbs()

    while get_flag(ParserFlags.DO_PERIODIC_SCANS):
        try:
            Populate(key=get_random_str())
        except PopulateCancelledError:
            pass

        if Ping()():
            try:
                CheckArtistImages()
            except (RequestConnectionError, ReadTimeout):
                log.error(
                    "Internet connection lost. Downloading artist images stopped."
                )

        sleep_time = get_scan_sleep_time()
        time.sleep(sleep_time)