import datetime
import hashlib
import os


def timestamp():
    return int(datetime.datetime.now().timestamp())


def file_hash(path: str, algo: str, block_size: int = 4096):
    fd = open(path, "rb")
    h = hashlib.new(algo)
    while True:
        data = fd.read(block_size)
        if len(data) > 0:
            h.update(data)
        else:
            break
    return h.hexdigest()


def file_md5(path, block_size=4096):
    return file_hash(path, "md5", block_size)


def file_sha256(path, block_size=4096):
    return file_hash(path, "sha256", block_size)