from os import chdir, path, listdir, stat, remove, sep
from datetime import timedelta
from time import time
from binascii import unhexlify

from fhost import app, db, File


chdir(path.dirname(path.abspath(__file__)) + sep + app.config["FHOST_STORAGE_PATH"])

max_content_len = app.config["MAX_CONTENT_LENGTH"]
min_days = app.config['MIN_DAYS']
max_days = app.config['MAX_DAYS']
current_file = time()

for filename in listdir('.'):
    file_stat = stat(filename)

    age = timedelta(seconds=current_file - file_stat.st_mtime).days

    maxage = min_days + (-max_days + min_days) * (file_stat.st_size / max_content_len - 1) ** 3

    if True:
        file_obj = File.query.filter_by(sha256=unhexlify(filename)).first()
        file_obj.removed = True
        db.session.add(file_obj)
        remove(filename)
        print('Deleting file: {}, age: {}'.format(filename, age))
    db.session.commit()