# Copyright (c) 2025 Patrick Motsch
# All rights reserved.
from typing import Any, Optional

from modules.datamodels.datamodelUam import User
from modules.datamodels.datamodelChat import ChatWorkflow

class PublicService:
    """Lightweight proxy exposing only public callable attributes of a target.

    - Hides names starting with '_'
    - Optionally restricts to callables only
    - Optional name_filter predicate for allow-list patterns
    """

    def __init__(self, target: Any, functionsOnly: bool = True, nameFilter=None):
        self._target = target
        self._functionsOnly = functionsOnly
        self._nameFilter = nameFilter

    def __getattr__(self, name: str):
        if name.startswith('_'):
            raise AttributeError(f"'{type(self._target).__name__}' attribute '{name}' is private")
        if self._nameFilter and not self._nameFilter(name):
            raise AttributeError(f"'{name}' not exposed by policy")
        attr = getattr(self._target, name)
        if self._functionsOnly and not callable(attr):
            raise AttributeError(f"'{name}' is not a function")
        return attr

    def __dir__(self):
        names = [
            n for n in dir(self._target)
            if not n.startswith('_')
            and (not self._functionsOnly or callable(getattr(self._target, n, None)))
            and (self._nameFilter(n) if self._nameFilter else True)
        ]
        return sorted(names)


class Services:

    def __init__(self, user: User, workflow: ChatWorkflow = None, mandateId: Optional[str] = None):
        self.user: User = user
        self.workflow: ChatWorkflow = workflow
        self.mandateId: Optional[str] = mandateId
        self.currentUserPrompt: str = ""  # Cleaned/normalized user intent for the current round
        self.rawUserPrompt: str = ""      # Original raw user message for the current round

        # Initialize interfaces with explicit mandateId

        from modules.interfaces.interfaceDbChat import getInterface as getChatInterface
        self.interfaceDbChat = getChatInterface(user, mandateId=mandateId)
        
        from modules.interfaces.interfaceDbApp import getInterface as getAppInterface
        self.interfaceDbApp = getAppInterface(user, mandateId=mandateId)
        
        from modules.interfaces.interfaceDbManagement import getInterface as getComponentInterface
        self.interfaceDbComponent = getComponentInterface(user, mandateId=mandateId)
        
        from modules.interfaces.interfaceDbTrustee import getInterface as getTrusteeInterface
        self.interfaceDbTrustee = getTrusteeInterface(user, mandateId=mandateId)
        
        # Expose RBAC directly on services for convenience
        self.rbac = self.interfaceDbApp.rbac if self.interfaceDbApp else None
        
        # Initialize service packages

        from .serviceExtraction.mainServiceExtraction import ExtractionService
        self.extraction = PublicService(ExtractionService(self))

        from .serviceGeneration.mainServiceGeneration import GenerationService
        self.generation = PublicService(GenerationService(self))

        from .serviceNeutralization.mainServiceNeutralization import NeutralizationService
        self.neutralization = PublicService(NeutralizationService(self))

        from .serviceSharepoint.mainServiceSharepoint import SharepointService
        self.sharepoint = PublicService(SharepointService(self))

        from .serviceAi.mainServiceAi import AiService
        self.ai = PublicService(AiService(self), functionsOnly=False)
        
        from .serviceTicket.mainServiceTicket import TicketService
        self.ticket = PublicService(TicketService(self))
    
        from .serviceChat.mainServiceChat import ChatService
        self.chat = PublicService(ChatService(self))
        
        from .serviceUtils.mainServiceUtils import UtilsService
        self.utils = PublicService(UtilsService(self))
        
        from .serviceWeb.mainServiceWeb import WebService
        self.web = PublicService(WebService(self))
        
        from .serviceSecurity.mainServiceSecurity import SecurityService
        self.security = PublicService(SecurityService(self))
        
        from .serviceMessaging.mainServiceMessaging import MessagingService
        self.messaging = PublicService(MessagingService(self))
        

def getInterface(user: User, workflow: ChatWorkflow = None, mandateId: Optional[str] = None) -> Services:
    """
    Get Services instance for the given user and mandate context.
    
    Args:
        user: The authenticated user
        workflow: Optional ChatWorkflow context
        mandateId: Explicit mandate context (from RequestContext / X-Mandate-Id header). Required.
    """
    return Services(user, workflow, mandateId=mandateId)