from datetime import datetime
from typing import Optional

from cpl_core.application import StartupABC
from cpl_core.configuration import ConfigurationABC
from cpl_core.database import DatabaseSettings
from cpl_core.dependency_injection import ServiceCollectionABC
from cpl_core.dependency_injection import ServiceProviderABC
from cpl_core.environment import ApplicationEnvironment
from cpl_core.logging import LoggerABC

from bot_core.abc.custom_file_logger_abc import CustomFileLoggerABC
from bot_core.configuration.feature_flags_enum import FeatureFlagsEnum
from bot_core.configuration.feature_flags_settings import FeatureFlagsSettings
from bot_core.logging.command_logger import CommandLogger
from bot_core.logging.database_logger import DatabaseLogger
from bot_core.logging.message_logger import MessageLogger
from bot_data.db_context import DBContext


class Startup(StartupABC):

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

        self._config: Optional[ConfigurationABC] = None
        self._feature_flags: Optional[FeatureFlagsSettings] = None

    def configure_configuration(self, configuration: ConfigurationABC, environment: ApplicationEnvironment) -> ConfigurationABC:
        self._config = configuration
        self._feature_flags = configuration.get_configuration(FeatureFlagsSettings)
        return configuration

    def configure_services(self, services: ServiceCollectionABC, environment: ApplicationEnvironment) -> ServiceProviderABC:
        services.add_logging()
        if self._feature_flags.get_flag(FeatureFlagsEnum.core_module):
            # custom logging
            services.add_singleton(CustomFileLoggerABC, CommandLogger)
            services.add_singleton(CustomFileLoggerABC, DatabaseLogger)
            services.add_singleton(CustomFileLoggerABC, MessageLogger)

        services.add_translation()
        services.add_db_context(DBContext, self._config.get_configuration(DatabaseSettings))

        provider = services.build_service_provider()
        # instantiate custom logger
        for c in CustomFileLoggerABC.__subclasses__():
            i: LoggerABC = provider.get_service(c)


        logger: LoggerABC = provider.get_service(LoggerABC)
        for flag in [f for f in FeatureFlagsEnum]:
            logger.debug(__name__, f'Loaded feature-flag: {flag} = {self._feature_flags.get_flag(flag)}')

        return provider