import os
from datetime import datetime
from typing import Optional

from cpl_core.application import StartupABC
from cpl_core.configuration import ConfigurationABC
from cpl_core.dependency_injection import ServiceProviderABC, ServiceCollectionABC
from cpl_core.environment import ApplicationEnvironment
from cpl_discord import get_discord_collection


class Startup(StartupABC):

    def __init__(self):
        StartupABC.__init__(self)
        self._start_time = datetime.now()

        self._config: Optional[ConfigurationABC] = None

    def configure_configuration(self, configuration: ConfigurationABC, environment: ApplicationEnvironment) -> ConfigurationABC:
        environment.set_working_directory(os.path.dirname(os.path.realpath(__file__)))
        configuration.add_environment_variables('KDB_')
        configuration.add_environment_variables('DISCORD_')

        configuration.add_json_file(f'config/appsettings.json', optional=False)
        configuration.add_json_file(f'config/appsettings.{environment.environment_name}.json', optional=True)
        configuration.add_json_file(f'config/appsettings.{environment.host_name}.json', optional=True)

        configuration.add_configuration('Startup_StartTime', str(self._start_time))

        self._config = configuration
        return configuration

    def configure_services(self, services: ServiceCollectionABC, environment: ApplicationEnvironment) -> ServiceProviderABC:
        services.add_logging()
        services.add_translation()
        services.add_discord()
        discord_collection = get_discord_collection(services)

        return services.build_service_provider()