import pytest

from lightphe.commons.logger import Logger
from lightphe import LightPHE

logger = Logger(module="tests/test_rsa.py")


def test_api():
    cs = LightPHE(algorithm_name="RSA", key_size=50)

    m1 = 17
    m2 = 21

    c1 = cs.encrypt(plaintext=m1)
    c2 = cs.encrypt(plaintext=m2)

    # homomorphic addition
    assert cs.decrypt(c1 * c2) == m1 * m2

    # unsupported homomorphic operations
    with pytest.raises(ValueError):
        _ = c1 + c2

    with pytest.raises(ValueError):
        _ = c1 ^ c2

    with pytest.raises(ValueError):
        _ = c1 * 5

    with pytest.raises(ValueError):
        _ = 5 * c1

    logger.info("✅ RSA api test succeeded")


def test_float_multiplication():
    cs = LightPHE(algorithm_name="RSA")

    m1 = 10000
    m2 = 1.05

    c1 = cs.encrypt(plaintext=m1)
    c2 = cs.encrypt(plaintext=m2)

    # homomorphic addition
    assert cs.decrypt(c1 * c2) == m1 * m2

    logger.info("✅ RSA float multiplication test succeeded")