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from pyflink.java_gateway import get_gateway

from pyflink.common import Configuration
from pyflink.table import EnvironmentSettings
from pyflink.testing.test_case_utils import PyFlinkTestCase


class EnvironmentSettingsTests(PyFlinkTestCase):

    def test_mode_selection(self):

        builder = EnvironmentSettings.new_instance()

        # test the default behaviour to make sure it is consistent with the python doc
        environment_settings = builder.build()
        self.assertTrue(environment_settings.is_streaming_mode())

        # test in_streaming_mode
        environment_settings = builder.in_streaming_mode().build()
        self.assertTrue(environment_settings.is_streaming_mode())

        environment_settings = EnvironmentSettings.in_streaming_mode()
        self.assertTrue(environment_settings.is_streaming_mode())

        # test in_batch_mode
        environment_settings = builder.in_batch_mode().build()
        self.assertFalse(environment_settings.is_streaming_mode())

        environment_settings = EnvironmentSettings.in_batch_mode()
        self.assertFalse(environment_settings.is_streaming_mode())

    def test_with_built_in_catalog_name(self):

        gateway = get_gateway()

        DEFAULT_BUILTIN_CATALOG = gateway.jvm.TableConfigOptions.TABLE_CATALOG_NAME.defaultValue()

        builder = EnvironmentSettings.new_instance()

        # test the default behaviour to make sure it is consistent with the python doc
        environment_settings = builder.build()

        self.assertEqual(environment_settings.get_built_in_catalog_name(), DEFAULT_BUILTIN_CATALOG)

        environment_settings = builder.with_built_in_catalog_name("my_catalog").build()

        self.assertEqual(environment_settings.get_built_in_catalog_name(), "my_catalog")

    def test_with_built_in_database_name(self):

        gateway = get_gateway()

        DEFAULT_BUILTIN_DATABASE = gateway.jvm.TableConfigOptions.TABLE_DATABASE_NAME.defaultValue()

        builder = EnvironmentSettings.new_instance()

        # test the default behaviour to make sure it is consistent with the python doc
        environment_settings = builder.build()

        self.assertEqual(environment_settings.get_built_in_database_name(),
                         DEFAULT_BUILTIN_DATABASE)

        environment_settings = builder.with_built_in_database_name("my_database").build()

        self.assertEqual(environment_settings.get_built_in_database_name(), "my_database")

    def test_to_configuration(self):

        expected_settings = EnvironmentSettings.new_instance().in_batch_mode().build()
        config = expected_settings.get_configuration()

        self.assertEqual("BATCH", config.get_string("execution.runtime-mode", "stream"))

    def test_from_configuration(self):

        config = Configuration()
        config.set_string("execution.runtime-mode", "batch")

        actual_setting = EnvironmentSettings.new_instance().with_configuration(config).build()
        self.assertFalse(actual_setting.is_streaming_mode(), "Use batch mode.")