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#
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#
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from datetime import datetime
from typing import Optional
from unittest.mock import Mock, patch

import pytest

from superset.db_engine_specs.impala import ImpalaEngineSpec as spec  # noqa: N813
from superset.models.core import Database
from superset.models.sql_lab import Query
from tests.unit_tests.db_engine_specs.utils import assert_convert_dttm
from tests.unit_tests.fixtures.common import dttm  # noqa: F401


@pytest.mark.parametrize(
    "target_type,expected_result",
    [
        ("Date", "CAST('2019-01-02' AS DATE)"),
        ("TimeStamp", "CAST('2019-01-02T03:04:05.678900' AS TIMESTAMP)"),
        ("UnknownType", None),
    ],
)
def test_convert_dttm(
    target_type: str,
    expected_result: Optional[str],
    dttm: datetime,  # noqa: F811
) -> None:
    assert_convert_dttm(spec, target_type, expected_result, dttm)


def test_get_cancel_query_id() -> None:
    query = Query()

    cursor_mock = Mock()
    last_operation_mock = Mock()
    cursor_mock._last_operation = last_operation_mock

    guid = bytes(reversed(bytes.fromhex("9fbdba20000000006940643a2731718b")))
    last_operation_mock.handle.operationId.guid = guid

    assert (
        spec.get_cancel_query_id(cursor_mock, query)
        == "6940643a2731718b:9fbdba2000000000"
    )


@patch("superset.db_engine_specs.impala.is_safe_host", return_value=True)
@patch("requests.post")
def test_cancel_query(post_mock: Mock, _safe_host: Mock) -> None:  # noqa: PT019
    query = Query()
    database = Database(
        database_name="test_impala",
        sqlalchemy_uri="impala://impala.example.com:21050/default",
    )
    query.database = database

    response_mock = Mock()
    response_mock.status_code = 200
    post_mock.return_value = response_mock

    result = spec.cancel_query(None, query, "6940643a2731718b:9fbdba2000000000")

    post_mock.assert_called_once_with(
        "http://impala.example.com:25000/cancel_query?query_id=6940643a2731718b:9fbdba2000000000",
        timeout=3,
        allow_redirects=False,
    )
    assert result is True


@patch("superset.db_engine_specs.impala.is_safe_host", return_value=True)
@patch("requests.post")
def test_cancel_query_failed(post_mock: Mock, _safe_host: Mock) -> None:  # noqa: PT019
    query = Query()
    database = Database(
        database_name="test_impala",
        sqlalchemy_uri="impala://impala.example.com:21050/default",
    )
    query.database = database

    response_mock = Mock()
    response_mock.status_code = 500
    post_mock.return_value = response_mock

    result = spec.cancel_query(None, query, "6940643a2731718b:9fbdba2000000000")

    post_mock.assert_called_once_with(
        "http://impala.example.com:25000/cancel_query?query_id=6940643a2731718b:9fbdba2000000000",
        timeout=3,
        allow_redirects=False,
    )
    assert result is False


@patch("superset.db_engine_specs.impala.is_safe_host", return_value=True)
@patch("requests.post")
def test_cancel_query_exception(post_mock: Mock, _safe_host: Mock) -> None:  # noqa: PT019
    query = Query()
    database = Database(
        database_name="test_impala",
        sqlalchemy_uri="impala://impala.example.com:21050/default",
    )
    query.database = database

    post_mock.side_effect = Exception("Network error")

    result = spec.cancel_query(None, query, "6940643a2731718b:9fbdba2000000000")

    assert result is False


@patch("requests.post")
def test_cancel_query_blocks_internal_host(post_mock: Mock, app_context: None) -> None:
    """A private/internal Impala host is refused by default (no HTTP call)."""
    query = Query()
    database = Database(
        database_name="test_impala",
        sqlalchemy_uri="impala://169.254.169.254:21050/default",
    )
    query.database = database

    result = spec.cancel_query(None, query, "6940643a2731718b:9fbdba2000000000")

    assert result is False
    post_mock.assert_not_called()


@patch("requests.post")
def test_cancel_query_allows_internal_host_with_opt_out(
    post_mock: Mock, app_context: None
) -> None:
    """IMPALA_CANCEL_QUERY_ALLOW_INTERNAL_HOSTS=True permits internal targets."""
    from flask import current_app

    query = Query()
    database = Database(
        database_name="test_impala",
        sqlalchemy_uri="impala://10.0.0.5:21050/default",
    )
    query.database = database

    response_mock = Mock()
    response_mock.status_code = 200
    post_mock.return_value = response_mock

    original = current_app.config.get("IMPALA_CANCEL_QUERY_ALLOW_INTERNAL_HOSTS")
    current_app.config["IMPALA_CANCEL_QUERY_ALLOW_INTERNAL_HOSTS"] = True
    try:
        result = spec.cancel_query(None, query, "6940643a2731718b:9fbdba2000000000")
    finally:
        current_app.config["IMPALA_CANCEL_QUERY_ALLOW_INTERNAL_HOSTS"] = original

    post_mock.assert_called_once_with(
        "http://10.0.0.5:25000/cancel_query?query_id=6940643a2731718b:9fbdba2000000000",
        timeout=3,
        allow_redirects=False,
    )
    assert result is True