# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.
from unittest.mock import MagicMock, patch

import pytest

from superset.commands.security.create import CreateRLSRuleCommand
from superset.commands.security.delete import DeleteRLSRuleCommand
from superset.commands.security.exceptions import RLSDatasourceForbiddenError
from superset.commands.security.update import UpdateRLSRuleCommand


def _mock_tables(*table_ids: int) -> list[MagicMock]:
    tables = []
    for table_id in table_ids:
        table = MagicMock()
        table.id = table_id
        tables.append(table)
    return tables


def _patch_query(module: str, tables: list[MagicMock]):
    """Patch db.session.query(...).filter(...).all() to return ``tables``."""
    query = MagicMock()
    query.filter.return_value.all.return_value = tables
    return patch(f"{module}.db.session.query", return_value=query)


def test_create_rls_rule_forbidden_when_no_datasource_access() -> None:
    tables = _mock_tables(1)

    with (
        _patch_query("superset.commands.security.create", tables),
        patch(
            "superset.commands.security.create.populate_roles",
            return_value=[],
        ),
        patch(
            "superset.commands.security.utils.security_manager.can_access_datasource",
            return_value=False,
        ) as can_access,
    ):
        command = CreateRLSRuleCommand({"tables": [1], "roles": []})
        with pytest.raises(RLSDatasourceForbiddenError):
            command.validate()

    can_access.assert_called_once_with(datasource=tables[0])


def test_create_rls_rule_allowed_when_datasource_access() -> None:
    tables = _mock_tables(1, 2)

    with (
        _patch_query("superset.commands.security.create", tables),
        patch(
            "superset.commands.security.create.populate_roles",
            return_value=[],
        ),
        patch(
            "superset.commands.security.utils.security_manager.can_access_datasource",
            return_value=True,
        ) as can_access,
    ):
        command = CreateRLSRuleCommand({"tables": [1, 2], "roles": []})
        command.validate()

    # Access is checked for every referenced datasource.
    assert can_access.call_count == 2
    assert command._properties["tables"] == tables


def test_create_rls_rule_forbidden_if_any_datasource_denied() -> None:
    tables = _mock_tables(1, 2)

    with (
        _patch_query("superset.commands.security.create", tables),
        patch(
            "superset.commands.security.create.populate_roles",
            return_value=[],
        ),
        patch(
            "superset.commands.security.utils.security_manager.can_access_datasource",
            side_effect=[True, False],
        ),
    ):
        command = CreateRLSRuleCommand({"tables": [1, 2], "roles": []})
        with pytest.raises(RLSDatasourceForbiddenError):
            command.validate()


def test_update_rls_rule_forbidden_when_no_datasource_access() -> None:
    tables = _mock_tables(1)

    with (
        _patch_query("superset.commands.security.update", tables),
        patch(
            "superset.commands.security.update.RLSDAO.find_by_id",
            return_value=MagicMock(),
        ),
        patch(
            "superset.commands.security.update.populate_roles",
            return_value=[],
        ),
        patch(
            "superset.commands.security.utils.security_manager.can_access_datasource",
            return_value=False,
        ) as can_access,
    ):
        command = UpdateRLSRuleCommand(1, {"tables": [1], "roles": []})
        with pytest.raises(RLSDatasourceForbiddenError):
            command.validate()

    can_access.assert_called_once_with(datasource=tables[0])


def test_update_rls_rule_allowed_when_datasource_access() -> None:
    tables = _mock_tables(1)

    with (
        _patch_query("superset.commands.security.update", tables),
        patch(
            "superset.commands.security.update.RLSDAO.find_by_id",
            return_value=MagicMock(),
        ),
        patch(
            "superset.commands.security.update.populate_roles",
            return_value=[],
        ),
        patch(
            "superset.commands.security.utils.security_manager.can_access_datasource",
            return_value=True,
        ) as can_access,
    ):
        command = UpdateRLSRuleCommand(1, {"tables": [1], "roles": []})
        command.validate()

    can_access.assert_called_once_with(datasource=tables[0])
    assert command._properties["tables"] == tables


def test_delete_rls_rule_forbidden_when_no_datasource_access() -> None:
    tables = _mock_tables(1)
    rule = MagicMock()
    rule.tables = tables

    with (
        patch(
            "superset.commands.security.delete.RLSDAO.find_by_ids",
            return_value=[rule],
        ),
        patch(
            "superset.commands.security.utils.security_manager.can_access_datasource",
            return_value=False,
        ) as can_access,
    ):
        command = DeleteRLSRuleCommand([1])
        with pytest.raises(RLSDatasourceForbiddenError):
            command.validate()

    can_access.assert_called_once_with(datasource=tables[0])


def test_delete_rls_rule_allowed_when_datasource_access() -> None:
    tables = _mock_tables(1, 2)
    rule = MagicMock()
    rule.tables = tables

    with (
        patch(
            "superset.commands.security.delete.RLSDAO.find_by_ids",
            return_value=[rule],
        ),
        patch(
            "superset.commands.security.utils.security_manager.can_access_datasource",
            return_value=True,
        ) as can_access,
    ):
        command = DeleteRLSRuleCommand([1])
        command.validate()

    # Access is checked for every datasource referenced by the rule.
    assert can_access.call_count == 2