import base64
import json
import time
import uuid
from Crypto.Cipher import AES


def encrypt_padding(string: str, block_size: int) -> str:
    length = len(string.encode('utf-8'))
    add_length = block_size - (length % block_size)
    return string + (chr(add_length) * add_length)


def aes_encrypt(string: str, aes_key: str) -> str:
    cipher = AES.new(aes_key.encode('utf-8'), AES.MODE_ECB)
    cipher_text = cipher.encrypt(encrypt_padding(string, AES.block_size).encode('utf-8'))
    cipher_text = base64.b64encode(cipher_text)
    return cipher_text.decode()


def genRat(url: str,emp:int) -> str:
    mi = {
        't': int(time.time() * 1000),
        'w': str(uuid.uuid4()),
        'r': url,
        'u': emp
    }
    return aes_encrypt(json.dumps(mi), '253140fdc9c44b0cb903c387b3e85d64')