from core.models.session.SessionState import SessionState
from core.controllers.ProfileController import ProfileController
from core.infrastructure.global_state import ProfileStateRepository
from core.observers.Notifications import Notifications, EventType


class SessionStateController:
    @staticmethod
    def get(id: int):
        return SessionState.find_by_id(id)

    @staticmethod
    def get_or_new(id: int):
        session_state = SessionStateController.get(id)

        if session_state is None:
            # Update the Singleton Repo
            repo = ProfileStateRepository()
            repo.sync_session_added(id)

            # Create and save the session
            session_state = SessionState(id)
            session_state.save()
            return session_state

        return session_state

    @staticmethod
    def exists(id: int):
        return SessionState.exists(id)

    @staticmethod
    def all():
        return SessionState.all()

    @staticmethod
    def update_or_create(session_state):
        # save to model:
        session_state.save()

        # get profile id:
        profile_id = session_state.id

        # Ensure repo knows this session exists
        ProfileStateRepository().sync_session_added(profile_id)

        # notify UI:
        Notifications.emit(EventType.SESSION_PROFILE_ENABLE, profile_id)

    @staticmethod
    def remove(profile_id: int):
        # save to model:
        SessionState.dissolve(profile_id)

        # cache:
        ProfileStateRepository().sync_session_removed(profile_id)

        # notify UI:
        Notifications.emit(EventType.SESSION_PROFILE_DISABLE, profile_id)