import time
import threading
import logging
import urllib.parse
import simplejson as json
from sys import exit


from . import CONFIG
AP_CONFIG = CONFIG['ap']

try:
    with open(CONFIG['db']) as f:
        DATABASE = json.load(f)

except FileNotFoundError:
    logging.info('No database was found, making a new one.')
    DATABASE = {}

except json.decoder.JSONDecodeError:
    logging.info('Invalid JSON in db. Exiting...')
    exit(1)

following = DATABASE.get('relay-list', [])
for inbox in following:
    if urllib.parse.urlsplit(inbox).hostname in AP_CONFIG['blocked_instances']:
        following.remove(inbox)

    elif AP_CONFIG['whitelist_enabled'] is True and urllib.parse.urlsplit(inbox).hostname not in AP_CONFIG['whitelist']:
        following.remove(inbox)

DATABASE['relay-list'] = following

if 'actors' in DATABASE:
    DATABASE.pop('actors')

def database_save():
    global DATABASE
    time.sleep(60)
    while True:
        logging.info('written database file {}'.format(CONFIG['db']))
        with open(CONFIG['db'], 'w') as f:
            json.dump(DATABASE, f)
        time.sleep(1800)

threading.Thread(target=database_save).start()