from typing import Optional

from cpl.application.application_host import ApplicationHost
from cpl.application.application_host_abc import ApplicationHostABC
from cpl.application.startup_abc import StartupABC
from cpl.configuration.configuration_abc import ConfigurationABC
from cpl.dependency_injection.service_provider_base import ServiceProviderABC


class Startup(StartupABC):

    def __init__(self):
        StartupABC.__init__(self)

        self._app_host: Optional[ApplicationHostABC] = None
        self._configuration: Optional[ConfigurationABC] = None
        self._services: Optional[ServiceProviderABC] = None

    def create_application_host(self) -> ApplicationHostABC:
        self._app_host = ApplicationHost()
        self._configuration = self._app_host.configuration
        self._services = self._app_host.services
        return self._app_host

    def create_configuration(self) -> ConfigurationABC:
        self._configuration.add_environment_variables('PYTHON_')
        self._configuration.add_environment_variables('CPL_')
        self._configuration.add_console_argument('', 'version', ['v'], '')
        self._configuration.add_console_argument('-', 'test', ['t'], '')
        self._configuration.add_console_argument('-', 'var', ['v'], ':')
        self._configuration.add_console_arguments()

        return self._configuration

    def create_services(self) -> ServiceProviderABC:
        return self._services