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import json
from unittest.mock import Mock, patch

from sqlalchemy.engine.url import URL

from superset.db_engine_specs.trino import TrinoEngineSpec
from tests.integration_tests.db_engine_specs.base_tests import TestDbEngineSpec


class TestTrinoDbEngineSpec(TestDbEngineSpec):
    def test_convert_dttm(self):
        dttm = self.get_dttm()

        self.assertEqual(
            TrinoEngineSpec.convert_dttm("DATE", dttm),
            "from_iso8601_date('2019-01-02')",
        )

        self.assertEqual(
            TrinoEngineSpec.convert_dttm("TIMESTAMP", dttm),
            "from_iso8601_timestamp('2019-01-02T03:04:05.678900')",
        )

    def test_adjust_database_uri(self):
        url = URL(drivername="trino", database="hive")
        TrinoEngineSpec.adjust_database_uri(url, selected_schema="foobar")
        self.assertEqual(url.database, "hive/foobar")

    def test_adjust_database_uri_when_database_contain_schema(self):
        url = URL(drivername="trino", database="hive/default")
        TrinoEngineSpec.adjust_database_uri(url, selected_schema="foobar")
        self.assertEqual(url.database, "hive/foobar")

    def test_adjust_database_uri_when_selected_schema_is_none(self):
        url = URL(drivername="trino", database="hive")
        TrinoEngineSpec.adjust_database_uri(url, selected_schema=None)
        self.assertEqual(url.database, "hive")

        url.database = "hive/default"
        TrinoEngineSpec.adjust_database_uri(url, selected_schema=None)
        self.assertEqual(url.database, "hive/default")

    def test_get_extra_params(self):
        database = Mock()

        database.extra = json.dumps({})
        database.server_cert = None
        extra = TrinoEngineSpec.get_extra_params(database)
        expected = {"engine_params": {"connect_args": {}}}
        self.assertEqual(extra, expected)

        expected = {
            "first": 1,
            "engine_params": {"second": "two", "connect_args": {"third": "three"}},
        }
        database.extra = json.dumps(expected)
        database.server_cert = None
        extra = TrinoEngineSpec.get_extra_params(database)
        self.assertEqual(extra, expected)

    @patch("superset.utils.core.create_ssl_cert_file")
    def test_get_extra_params_with_server_cert(self, create_ssl_cert_file_func: Mock):
        database = Mock()

        database.extra = json.dumps({})
        database.server_cert = "TEST_CERT"
        create_ssl_cert_file_func.return_value = "/path/to/tls.crt"
        extra = TrinoEngineSpec.get_extra_params(database)

        connect_args = extra.get("engine_params", {}).get("connect_args", {})
        self.assertEqual(connect_args.get("http_scheme"), "https")
        self.assertEqual(connect_args.get("verify"), "/path/to/tls.crt")
        create_ssl_cert_file_func.assert_called_once_with(database.server_cert)