"""
Tests of execution of dot operation.
"""

import numpy as np
import pytest

from concrete import fhe


@pytest.mark.parametrize(
    "size",
    [1, 4, 6, 10],
)
def test_constant_dot(size, helpers):
    """
    Test dot where one of the operators is a constant.
    """

    configuration = helpers.configuration()

    bound = int(np.floor(np.sqrt(127 / size)))
    cst = np.random.randint(0, bound, size=(size,))

    @fhe.compiler({"x": "encrypted"})
    def left_function(x):
        return np.dot(x, cst)

    @fhe.compiler({"x": "encrypted"})
    def right_function(x):
        return np.dot(cst, x)

    @fhe.compiler({"x": "encrypted"})
    def method(x):
        return x.dot(cst)

    inputset = [np.random.randint(0, bound, size=(size,)) for i in range(100)]

    left_function_circuit = left_function.compile(inputset, configuration)
    right_function_circuit = right_function.compile(inputset, configuration)
    method_circuit = method.compile(inputset, configuration)

    sample = np.random.randint(0, bound, size=(size,))

    helpers.check_execution(left_function_circuit, left_function, sample)
    helpers.check_execution(right_function_circuit, right_function, sample)
    helpers.check_execution(method_circuit, method, sample)


@pytest.mark.parametrize("size", [1, 10])
@pytest.mark.parametrize("bit_width", [2, 6])
@pytest.mark.parametrize("signed", [True, False])
@pytest.mark.parametrize("only_negative", [True, False])
def test_dot(size, bit_width, only_negative, signed, helpers):
    """
    Test dot.
    """

    configuration = helpers.configuration()

    minimum = 0 if not signed else -(2 ** (bit_width - 1))
    maximum = 2**bit_width if not signed else 2 ** (bit_width - 1)

    if only_negative:
        maximum = 1

    @fhe.compiler({"x": "encrypted", "y": "encrypted"})
    def function(x, y):
        return np.dot(x, y)

    inputset = [
        (
            np.random.randint(minimum, maximum, size=(size,)),
            np.random.randint(minimum, maximum, size=(size,)),
        )
        for i in range(100)
    ]
    circuit = function.compile(inputset, configuration)

    sample = [
        np.random.randint(minimum, maximum, size=(size,)),
        np.random.randint(minimum, maximum, size=(size,)),
    ]

    helpers.check_execution(circuit, function, sample, retries=3)