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#
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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_update_rls_rule_partial_update_preserves_tables_and_roles() -> None:
    """A partial update without tables/roles must not clear those bindings.

    When the request body omits ``tables``/``roles``, validate() must not add
    those keys to the properties passed to the DAO, so the existing bindings
    are left untouched instead of being overwritten with empty lists.
    """
    rule = MagicMock()
    rule.tables = _mock_tables(1)
    with (
        patch(
            "superset.commands.security.update.RLSDAO.find_by_id",
            return_value=rule,
        ),
        patch(
            "superset.commands.security.update.populate_roles",
        ) as populate_roles,
        patch("superset.commands.security.update.db.session.query") as query,
        patch(
            "superset.commands.security.utils.security_manager.can_access_datasource",
            return_value=True,
        ),
    ):
        command = UpdateRLSRuleCommand(1, {"name": "new name"})
        command.validate()

    # Omitted relationships are not resolved or written back.
    populate_roles.assert_not_called()
    query.assert_not_called()
    assert "tables" not in command._properties
    assert "roles" not in command._properties
    assert command._properties["name"] == "new name"


def test_update_rls_rule_only_roles_present_does_not_touch_tables() -> None:
    """Updating only ``roles`` must not resolve or overwrite ``tables``."""
    rule = MagicMock()
    rule.tables = _mock_tables(1)
    with (
        patch(
            "superset.commands.security.update.RLSDAO.find_by_id",
            return_value=rule,
        ),
        patch(
            "superset.commands.security.update.populate_roles",
            return_value=["resolved-role"],
        ) as populate_roles,
        patch("superset.commands.security.update.db.session.query") as query,
        patch(
            "superset.commands.security.utils.security_manager.can_access_datasource",
            return_value=True,
        ),
    ):
        command = UpdateRLSRuleCommand(1, {"roles": [1]})
        command.validate()

    populate_roles.assert_called_once()
    query.assert_not_called()
    assert command._properties["roles"] == ["resolved-role"]
    assert "tables" not in command._properties


def test_update_rls_rule_partial_update_enforces_access_on_existing_tables() -> None:
    """A partial update that omits ``tables`` still enforces datasource access.

    The rule's existing table bindings must be authorized so a caller cannot
    edit a rule tied to datasources they cannot access by simply omitting
    ``tables`` from the payload.
    """
    rule = MagicMock()
    rule.tables = _mock_tables(1)
    with (
        patch(
            "superset.commands.security.update.RLSDAO.find_by_id",
            return_value=rule,
        ),
        patch("superset.commands.security.update.db.session.query") as query,
        patch(
            "superset.commands.security.utils.security_manager.can_access_datasource",
            return_value=False,
        ) as can_access,
    ):
        command = UpdateRLSRuleCommand(1, {"name": "new name"})
        with pytest.raises(RLSDatasourceForbiddenError):
            command.validate()

    # Access is checked against the rule's existing tables, not a submitted set.
    can_access.assert_called_once_with(datasource=rule.tables[0])
    query.assert_not_called()


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