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from __future__ import annotations

from unittest import mock

import pytest

from airflow.cli.commands.standalone_command import StandaloneCommand
from airflow.executors.executor_constants import (
    CELERY_EXECUTOR,
    CELERY_KUBERNETES_EXECUTOR,
    DASK_EXECUTOR,
    DEBUG_EXECUTOR,
    KUBERNETES_EXECUTOR,
    LOCAL_EXECUTOR,
    LOCAL_KUBERNETES_EXECUTOR,
    SEQUENTIAL_EXECUTOR,
)


class TestStandaloneCommand:
    @pytest.mark.parametrize(
        "conf_executor_name, conf_sql_alchemy_conn, expected_standalone_executor",
        [
            (LOCAL_EXECUTOR, "sqlite_conn_string", LOCAL_EXECUTOR),
            (LOCAL_KUBERNETES_EXECUTOR, "sqlite_conn_string", SEQUENTIAL_EXECUTOR),
            (SEQUENTIAL_EXECUTOR, "sqlite_conn_string", SEQUENTIAL_EXECUTOR),
            (CELERY_EXECUTOR, "sqlite_conn_string", SEQUENTIAL_EXECUTOR),
            (CELERY_KUBERNETES_EXECUTOR, "sqlite_conn_string", SEQUENTIAL_EXECUTOR),
            (DASK_EXECUTOR, "sqlite_conn_string", SEQUENTIAL_EXECUTOR),
            (KUBERNETES_EXECUTOR, "sqlite_conn_string", SEQUENTIAL_EXECUTOR),
            (DEBUG_EXECUTOR, "sqlite_conn_string", SEQUENTIAL_EXECUTOR),
            (LOCAL_EXECUTOR, "other_db_conn_string", LOCAL_EXECUTOR),
            (LOCAL_KUBERNETES_EXECUTOR, "other_db_conn_string", LOCAL_EXECUTOR),
            (SEQUENTIAL_EXECUTOR, "other_db_conn_string", SEQUENTIAL_EXECUTOR),
            (CELERY_EXECUTOR, "other_db_conn_string", LOCAL_EXECUTOR),
            (CELERY_KUBERNETES_EXECUTOR, "other_db_conn_string", LOCAL_EXECUTOR),
            (DASK_EXECUTOR, "other_db_conn_string", LOCAL_EXECUTOR),
            (KUBERNETES_EXECUTOR, "other_db_conn_string", LOCAL_EXECUTOR),
            (DEBUG_EXECUTOR, "other_db_conn_string", LOCAL_EXECUTOR),
        ],
    )
    def test_calculate_env(self, conf_executor_name, conf_sql_alchemy_conn, expected_standalone_executor):
        """Should always force a local executor compatible with the db."""
        with mock.patch.dict(
            "os.environ",
            {
                "AIRFLOW__CORE__EXECUTOR": conf_executor_name,
                "AIRFLOW__DATABASE__SQL_ALCHEMY_CONN": conf_sql_alchemy_conn,
            },
        ):
            env = StandaloneCommand().calculate_env()
            assert env["AIRFLOW__CORE__EXECUTOR"] == expected_standalone_executor
