import numpy as np
import pytest
from src.models import KeypadSize
from src.user_cipher import UserCipher, CustomerCipher


@pytest.mark.parametrize(
    "passcode_len",
    [
        6
    ]
)
def test_encode_decode_base64(passcode_len):
    data = np.random.choice(2**16, passcode_len, replace=False)
    encoded = UserCipher.encode_base64_str(data)
    decoded = UserCipher.decode_base64_str(encoded)
    assert (len(data) == len(decoded))
    assert (all(data[idx] == decoded[idx] for idx in range(passcode_len)))


@pytest.mark.parametrize(
    "keypad_size,max_nkode_len",
    [
        (KeypadSize(numb_of_keys=10, props_per_key=11), 10),
        (KeypadSize(numb_of_keys=9, props_per_key=11), 10),
        (KeypadSize(numb_of_keys=8, props_per_key=11), 12),
    ])
def test_decode_mask(keypad_size, max_nkode_len):
    customer = CustomerCipher.create(keypad_size)
    passcode_entry = np.random.choice(keypad_size.total_props, 4, replace=False)
    passcode_values = [customer.property_key[idx] for idx in passcode_entry]
    customer_pos_vals = customer.position_key
    user_keys = UserCipher.create(keypad_size, customer_pos_vals, max_nkode_len)
    passcode = user_keys.encipher_nkode(passcode_entry, customer)
    orig_passcode_pos_vals = customer.get_props_position_vals(passcode_values)
    passcode_pos_vals = user_keys.decipher_mask(passcode.mask, customer_pos_vals, len(passcode_entry))
    assert (len(passcode_pos_vals) == len(orig_passcode_pos_vals))
    assert (all(orig_passcode_pos_vals[idx] == passcode_pos_vals[idx] for idx in range(len(passcode_pos_vals))))