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"""Unit tests for alerting in Superset"""
import logging
from contextlib import contextmanager
from unittest.mock import patch

import pytest
from flask_appbuilder.security.sqla.models import Role

from superset.extensions import db, security_manager
from superset.migrations.shared.security_converge import (
    add_pvms,
    migrate_roles,
    Pvm,
    PvmMigrationMapType,
)
from tests.integration_tests.test_app import app

logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)


@contextmanager
def create_old_role(pvm_map: PvmMigrationMapType, external_pvms):
    with app.app_context():
        pvms = []
        for old_pvm, new_pvms in pvm_map.items():
            pvms.append(
                security_manager.add_permission_view_menu(
                    old_pvm.permission, old_pvm.view
                )
            )
        for external_pvm in external_pvms:
            pvms.append(
                security_manager.find_permission_view_menu(
                    external_pvm.permission, external_pvm.view
                )
            )

        new_role = Role(name="Dummy Role", permissions=pvms)
        db.session.add(new_role)
        db.session.commit()

        yield new_role

        new_role = (
            db.session.query(Role).filter(Role.name == "Dummy Role").one_or_none()
        )
        new_role.permissions = []
        for old_pvm, new_pvms in pvm_map.items():
            security_manager.del_permission_view_menu(old_pvm.permission, old_pvm.view)
            for new_pvm in new_pvms:
                security_manager.del_permission_view_menu(
                    new_pvm.permission, new_pvm.view
                )

        db.session.delete(new_role)
        db.session.commit()


@pytest.mark.parametrize(
    "description, new_pvms, pvm_map, external_pvms, deleted_views, deleted_permissions",
    [
        (
            "Many to one readonly",
            {"NewDummy": ("can_read",)},
            {
                Pvm("DummyView", "can_list"): (Pvm("NewDummy", "can_read"),),
                Pvm("DummyView", "can_show"): (Pvm("NewDummy", "can_read"),),
            },
            (),
            ("DummyView",),
            (),
        ),
        (
            "Many to one with new permission",
            {"NewDummy": ("can_new_perm", "can_write")},
            {
                Pvm("DummyView", "can_list"): (Pvm("NewDummy", "can_new_perm"),),
                Pvm("DummyView", "can_show"): (Pvm("NewDummy", "can_write"),),
            },
            (),
            ("DummyView",),
            (),
        ),
        (
            "Many to one with multiple permissions",
            {
                "NewDummy": (
                    "can_read",
                    "can_write",
                )
            },
            {
                Pvm("DummyView", "can_list"): (Pvm("NewDummy", "can_read"),),
                Pvm("DummyView", "can_show"): (Pvm("NewDummy", "can_read"),),
                Pvm("DummyView", "can_add"): (Pvm("NewDummy", "can_write"),),
                Pvm("DummyView", "can_delete"): (Pvm("NewDummy", "can_write"),),
            },
            (),
            ("DummyView",),
            (),
        ),
        (
            "Many to one with multiple views",
            {
                "NewDummy": (
                    "can_read",
                    "can_write",
                )
            },
            {
                Pvm("DummyView", "can_list"): (Pvm("NewDummy", "can_read"),),
                Pvm("DummyView", "can_show"): (Pvm("NewDummy", "can_read"),),
                Pvm("DummyView", "can_add"): (Pvm("NewDummy", "can_write"),),
                Pvm("DummyView", "can_delete"): (Pvm("NewDummy", "can_write"),),
                Pvm("DummySecondView", "can_list"): (Pvm("NewDummy", "can_read"),),
                Pvm("DummySecondView", "can_show"): (Pvm("NewDummy", "can_read"),),
                Pvm("DummySecondView", "can_add"): (Pvm("NewDummy", "can_write"),),
                Pvm("DummySecondView", "can_delete"): (Pvm("NewDummy", "can_write"),),
            },
            (),
            ("DummyView", "DummySecondView"),
            (),
        ),
        (
            "Many to one with existing permission-view (pvm)",
            {
                "NewDummy": (
                    "can_read",
                    "can_write",
                )
            },
            {
                Pvm("DummyView", "can_list"): (Pvm("NewDummy", "can_read"),),
                Pvm("DummyView", "can_add"): (Pvm("NewDummy", "can_write"),),
            },
            (Pvm("UserDBModelView", "can_list"),),
            ("DummyView",),
            (),
        ),
        (
            "Many to one with existing multiple permission-view (pvm)",
            {
                "NewDummy": (
                    "can_read",
                    "can_write",
                )
            },
            {
                Pvm("DummyView", "can_list"): (Pvm("NewDummy", "can_read"),),
                Pvm("DummyView", "can_add"): (Pvm("NewDummy", "can_write"),),
                Pvm("DummySecondView", "can_list"): (Pvm("NewDummy", "can_read"),),
                Pvm("DummySecondView", "can_add"): (Pvm("NewDummy", "can_write"),),
            },
            (
                Pvm("UserDBModelView", "can_list"),
                Pvm("UserDBModelView", "can_add"),
            ),
            ("DummyView",),
            (),
        ),
        (
            "Many to one with old permission that gets deleted",
            {
                "NewDummy": (
                    "can_read",
                    "can_write",
                )
            },
            {
                Pvm("DummyView", "can_new_perm"): (Pvm("NewDummy", "can_read"),),
                Pvm("DummyView", "can_add"): (Pvm("NewDummy", "can_write"),),
            },
            (),
            ("DummyView",),
            ("can_new_perm",),
        ),
        (
            "Many to Many (normally should be a downgrade)",
            {
                "DummyView": (
                    "can_list",
                    "can_show",
                    "can_add",
                )
            },
            {
                Pvm("NewDummy", "can_read"): (
                    Pvm("DummyView", "can_list"),
                    Pvm("DummyView", "can_show"),
                ),
                Pvm("NewDummy", "can_write"): (Pvm("DummyView", "can_add"),),
            },
            (),
            ("NewDummy",),
            (),
        ),
        (
            "Many to Many delete old permissions",
            {
                "DummyView": (
                    "can_list",
                    "can_show",
                    "can_add",
                )
            },
            {
                Pvm("NewDummy", "can_new_perm1"): (
                    Pvm("DummyView", "can_list"),
                    Pvm("DummyView", "can_show"),
                ),
                Pvm(
                    "NewDummy",
                    "can_new_perm2",
                ): (Pvm("DummyView", "can_add"),),
            },
            (),
            ("NewDummy",),
            ("can_new_perm1", "can_new_perm2"),
        ),
    ],
)
def test_migrate_role(
    description, new_pvms, pvm_map, external_pvms, deleted_views, deleted_permissions
):
    """
    Permission migration: generic tests
    """
    logger.info(description)
    with create_old_role(pvm_map, external_pvms) as old_role:
        role_name = old_role.name

        # Run migrations
        add_pvms(db.session, new_pvms)
        migrate_roles(db.session, pvm_map)

        role = db.session.query(Role).filter(Role.name == role_name).one_or_none()
        for old_pvm, new_pvms in pvm_map.items():
            old_pvm_model = security_manager.find_permission_view_menu(
                old_pvm.permission, old_pvm.view
            )
            assert old_pvm_model is None
            new_pvm_model = security_manager.find_permission_view_menu(
                new_pvms[0].permission, new_pvms[0].view
            )
            assert new_pvm_model is not None
            assert new_pvm_model in role.permissions
        # assert deleted view menus
        for deleted_view in deleted_views:
            assert security_manager.find_view_menu(deleted_view) is None
        # assert deleted permissions
        for deleted_permission in deleted_permissions:
            assert security_manager.find_permission(deleted_permission) is None
        # assert externals are still there
        for external_pvm in external_pvms:
            assert (
                security_manager.find_permission_view_menu(
                    external_pvm.permission, external_pvm.view
                )
                is not None
            )