"""
Mandate routes for the backend API.
Implements the endpoints for mandate management.
"""

from fastapi import APIRouter, HTTPException, Depends, Body, Path, Request, Response
from typing import List, Dict, Any
from fastapi import status
import logging

# Import auth module
from modules.security.auth import limiter, getCurrentUser

# Import interfaces
import modules.interfaces.interfaceDbAppObjects as interfaceDbAppObjects
from modules.shared.attributeUtils import getModelAttributeDefinitions

# Import the model classes
from modules.datamodels.datamodelUam import Mandate, User

# Configure logger
logger = logging.getLogger(__name__)

# Model attributes for Mandate
mandateAttributes = getModelAttributeDefinitions(Mandate)

# Create a router for the mandate endpoints
router = APIRouter(
    prefix="/api/mandates",
    tags=["Manage Mandates"],
    responses={404: {"description": "Not found"}}
)

@router.get("/", response_model=List[Mandate])
@limiter.limit("30/minute")
async def get_mandates(
    request: Request,
    currentUser: User = Depends(getCurrentUser)
) -> List[Mandate]:
    """Get all mandates"""
    try:
        appInterface = interfaceDbAppObjects.getInterface(currentUser)
        mandates = appInterface.getAllMandates()
        return mandates
    except Exception as e:
        logger.error(f"Error getting mandates: {str(e)}")
        raise HTTPException(
            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
            detail=f"Failed to get mandates: {str(e)}"
        )

@router.get("/{mandateId}", response_model=Mandate)
@limiter.limit("30/minute")
async def get_mandate(
    request: Request,
    mandateId: str = Path(..., description="ID of the mandate"),
    currentUser: User = Depends(getCurrentUser)
) -> Mandate:
    """Get a specific mandate by ID"""
    try:
        appInterface = interfaceDbAppObjects.getInterface(currentUser)
        mandate = appInterface.getMandate(mandateId)
        
        if not mandate:
            raise HTTPException(
                status_code=status.HTTP_404_NOT_FOUND,
                detail=f"Mandate with ID {mandateId} not found"
            )
            
        return mandate
    except HTTPException:
        raise
    except Exception as e:
        logger.error(f"Error getting mandate {mandateId}: {str(e)}")
        raise HTTPException(
            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
            detail=f"Failed to get mandate: {str(e)}"
        )

@router.post("/", response_model=Mandate)
@limiter.limit("10/minute")
async def create_mandate(
    request: Request,
    mandateData: Mandate = Body(...),
    currentUser: User = Depends(getCurrentUser)
) -> Mandate:
    """Create a new mandate"""
    try:
        appInterface = interfaceDbAppObjects.getInterface(currentUser)
        
        # Create mandate
        newMandate = appInterface.createMandate(
            name=mandateData.name,
            language=mandateData.language
        )
        
        if not newMandate:
            raise HTTPException(
                status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
                detail="Failed to create mandate"
            )
            
        return newMandate
    except HTTPException:
        raise
    except Exception as e:
        logger.error(f"Error creating mandate: {str(e)}")
        raise HTTPException(
            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
            detail=f"Failed to create mandate: {str(e)}"
        )

@router.put("/{mandateId}", response_model=Mandate)
@limiter.limit("10/minute")
async def update_mandate(
    request: Request,
    mandateId: str = Path(..., description="ID of the mandate to update"),
    mandateData: Mandate = Body(...),
    currentUser: User = Depends(getCurrentUser)
) -> Mandate:
    """Update an existing mandate"""
    try:
        appInterface = interfaceDbAppObjects.getInterface(currentUser)
        
        # Check if mandate exists
        existingMandate = appInterface.getMandate(mandateId)
        if not existingMandate:
            raise HTTPException(
                status_code=status.HTTP_404_NOT_FOUND,
                detail=f"Mandate with ID {mandateId} not found"
            )
            
        # Update mandate
        updatedMandate = appInterface.updateMandate(mandateId, mandateData.model_dump())
        
        if not updatedMandate:
            raise HTTPException(
                status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
                detail="Failed to update mandate"
            )
            
        return updatedMandate
    except HTTPException:
        raise
    except Exception as e:
        logger.error(f"Error updating mandate {mandateId}: {str(e)}")
        raise HTTPException(
            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
            detail=f"Failed to update mandate: {str(e)}"
        )

@router.delete("/{mandateId}", response_model=Dict[str, Any])
@limiter.limit("10/minute")
async def delete_mandate(
    request: Request,
    mandateId: str = Path(..., description="ID of the mandate to delete"),
    currentUser: User = Depends(getCurrentUser)
) -> Dict[str, Any]:
    """Delete a mandate"""
    try:
        appInterface = interfaceDbAppObjects.getInterface(currentUser)
        
        # Check if mandate exists
        existingMandate = appInterface.getMandate(mandateId)
        if not existingMandate:
            raise HTTPException(
                status_code=status.HTTP_404_NOT_FOUND,
                detail=f"Mandate {mandateId} not found"
            )
            
        # Delete mandate
        try:
            appInterface.deleteMandate(mandateId)
        except ValueError as e:
            raise HTTPException(
                status_code=status.HTTP_400_BAD_REQUEST,
                detail=str(e)
            )
            
        return {"message": f"Mandate {mandateId} deleted successfully"}
    except HTTPException:
        raise
    except Exception as e:
        logger.error(f"Error deleting mandate {mandateId}: {str(e)}")
        raise HTTPException(
            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
            detail=f"Failed to delete mandate: {str(e)}"
        )