from unittest.mock import patch

import demistomock as demisto
import pytest
from StringSimilarity import main, stringSimilarity


@pytest.mark.parametrize(
    "first_string, second_string, similarity_threshold, expected_result",
    [
        (
            ["hello"],
            ["hello"],
            0.9,
            [
                {
                    "StringA": "hello",
                    "StringB": "hello",
                    "SimilarityScore": 1.0,
                }
            ],
        ),
        (
            ["deeply"],
            ["deeply"],
            0.6,
            [
                {
                    "StringA": "deeply",
                    "StringB": "deeply",
                    "SimilarityScore": 1.0,
                }
            ],
        ),
        (
            ["testing"],
            ["test"],
            0.7,
            [
                {
                    "StringA": "testing",
                    "StringB": "test",
                    "SimilarityScore": 0.7272727272727273,
                }
            ],
        ),
        ("a", "b", 0.1, {None}),
    ],
)
def test_string_similarity(first_string, second_string, similarity_threshold, expected_result, mocker):
    """
    given two strings and similarity threshold
    when calling stringSimilarity
    then make sure a None value is returned when similarityScore < threshold, else is expected_result
    """
    result = stringSimilarity(first_string, second_string, similarity_threshold)
    if result is not None:
        assert result.outputs == expected_result
    else:
        assert result is None


def test_main_with_similarity_match():
    similarity_threshold = 0.1
    first_string = "hello"
    second_string = "world"

    # Mock demisto.getArg function to return the input arguments
    with patch.object(demisto, "getArg") as mocked_getArg:
        mocked_getArg.side_effect = lambda arg_name: {
            "similarity_threshold": similarity_threshold,
            "string_A": first_string,
            "string_B": second_string,
        }[arg_name]

        # Execute the main function and check if ValueError is raised
        try:
            main()
            assert demisto.results
        except ValueError as e:
            assert str(e) == "No similarity score calculated. Check the similarityThreshold value."


def test_main_with_no_similarity_match(mocker):
    similarity_threshold = 0.1
    first_string = "hello"
    second_string = "world"
    expected_results = [{"StringA": "hello", "StringB": "world", "SimilarityScore": 0.2}]
    # Mock demisto.getArg function to return the input arguments
    with patch.object(demisto, "getArg") as mocked_getArg:
        mocked_getArg.side_effect = lambda arg_name: {
            "similarity_threshold": similarity_threshold,
            "string_A": first_string,
            "string_B": second_string,
        }[arg_name]
        return_results = mocker.patch("StringSimilarity.return_results")
        # Execute the main function and check if ValueError is raised
        try:
            main()
            assert return_results.call_args[0][0].to_context()["Contents"] == expected_results
        except ValueError as e:
            assert str(e) == "No similarity score calculated. Check the similarityThreshold value."


def test_main_with_invalid_similarity_threshold(mocker):
    similarity_threshold = "invalid_threshold"
    first_string = "hello world"
    second_string = "hi world"

    # Mock demisto.getArg function to return the input arguments
    with patch.object(demisto, "getArg") as mocked_getArg:
        mocked_getArg.side_effect = lambda arg_name: {
            "similarity_threshold": similarity_threshold,
            "string_A": first_string,
            "string_B": second_string,
        }[arg_name]
        return_results = mocker.patch("StringSimilarity.return_error")
        # Execute the main function and check if ValueError is raised due to invalid similarity_threshold
        main()
        result = return_results.call_args[0][0]
        assert result == "Failed to check string similarity. Problem: could not convert string to float: 'invalid_threshold'"