import pytest
from GoogleCloudFunctions import functions_list_command, resolve_default_project_id


@pytest.mark.parametrize(
    "project, credentials_json, expected_output,expected_exception",
    [
        (
            "some-project-id",
            {"credentials_json": {"type": "service_account", "project_id": "some-project-id"}},
            "some-project-id",
            None,
        ),
        (None, {"credentials_json": {"type": "service_account", "project_id": "some-project-id"}}, "some-project-id", None),
        ("some-project-id", {"credentials_json": {"type": "service_account"}}, "some-project-id", None),
        (None, {"credentials_json": {"type": "service_account"}}, None, SystemExit),
    ],
)
def test_resolve_default_project_id(project, credentials_json, expected_output, expected_exception):
    credentials_json = credentials_json.get("credentials_json")
    if expected_exception is None:
        assert resolve_default_project_id(project, credentials_json) == expected_output
    else:
        with pytest.raises(SystemExit):
            assert resolve_default_project_id(project, credentials_json) == expected_output


def test_format_parameters():
    from GoogleCloudFunctions import format_parameters

    parameters_to_check = "key:value , name: lastname, onemorekey : to test "
    result = format_parameters(parameters_to_check)
    assert result == '{"key": "value", "name": "lastname", "onemorekey": "to test"}'

    bad_parameters = "oh:no,bad"
    with pytest.raises(ValueError):
        format_parameters(bad_parameters)


class GoogleClientMock:
    def __init__(self, region="region", project="project", functions=None):
        if functions is None:
            functions = []
        self.region = region
        self.project = project
        self.functions = functions

    def functions_list(self, region, project_id):
        return {"functions": self.functions}


def test_no_functions():
    """
    Given:
        - Google client without functions

    When:
        - Running functions-list command

    Then:
        - Ensure expected human readable response is returned
    """
    client = GoogleClientMock()
    hr, _, _ = functions_list_command(client, {})
    assert hr == "No functions found."