from app.core.observer_manager import ObserverManager, NotificationType
from app.core.language_manager import LanguageManager
from app.core.theme_manager import ThemeManager
from app.core.settings_manager import SettingsManager
from app.core.alert_manager import AlertManager
from app.core.update_manager import UpdateManager
from app.core.dicom_manager import DicomManager
from app.core.export_manager import ExportManager
from typing import Optional

class MainManager:
    _instance: Optional['MainManager'] = None
    
    def __init__(self) -> None:
        if MainManager._instance is not None:
            raise Exception("This class is a singleton!")
        else:
            MainManager._instance = self
            self.observer_manager: ObserverManager = ObserverManager()
            self.theme_manager: ThemeManager = ThemeManager()
            self.settings_manager: SettingsManager = SettingsManager(self.observer_manager, self.theme_manager)
            self.language_manager: LanguageManager = LanguageManager(self.settings_manager)
            self.alert_manager: AlertManager = AlertManager(self.language_manager, self.theme_manager)
            self.update_manager: UpdateManager = UpdateManager(self.settings_manager, self.language_manager, self.alert_manager)
            self.dicom_manager: DicomManager = DicomManager()
            self.export_manager: ExportManager = ExportManager(self.dicom_manager)
    @classmethod
    def get_instance(cls) -> 'MainManager':
        if cls._instance is None:
            cls._instance = cls()
        return cls._instance
    
    def get_observer_manager(self) -> ObserverManager:
        return self.observer_manager
        
    def get_theme_manager(self) -> ThemeManager:
        return self.theme_manager
        
    def get_settings_manager(self) -> SettingsManager:
        return self.settings_manager
        
    def get_language_manager(self) -> LanguageManager:
        return self.language_manager

    def get_alert_manager(self) -> AlertManager:
        return self.alert_manager
    
    def get_update_manager(self) -> UpdateManager:
        return self.update_manager
    
    def get_dicom_manager(self) -> DicomManager:
        return self.dicom_manager
    
    def get_export_manager(self) -> ExportManager:
        return self.export_manager