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

# Import auth module
import modules.security.auth as auth

# Import interfaces
import modules.interfaces.gatewayInterface as gatewayInterface
from modules.interfaces.gatewayModel import Mandate, getModelAttributes

# Configure logger
logger = logging.getLogger(__name__)

# Model attributes for Mandate
mandateAttributes = getModelAttributes(Mandate)

router = APIRouter(
    prefix="/api/mandates",
    tags=["Mandates"],
    responses={404: {"description": "Not found"}}
)

@router.get("/", response_model=List[Dict[str, Any]], tags=["Mandates"])
async def get_mandates(currentUser: Dict[str, Any] = Depends(auth.getCurrentActiveUser)):
    """Get all mandates"""
    try:
        interfaceGateway = gatewayInterface.getInterface(currentUser)
        return interfaceGateway.getMandates()
    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=Dict[str, Any], tags=["Mandates"])
async def get_mandate(
    mandateId: str,
    currentUser: Dict[str, Any] = Depends(auth.getCurrentActiveUser)
):
    """Get a specific mandate by ID"""
    try:
        interfaceGateway = gatewayInterface.getInterface(currentUser)
        mandate = interfaceGateway.getMandateById(mandateId)
        
        if not mandate:
            raise HTTPException(
                status_code=status.HTTP_404_NOT_FOUND,
                detail=f"Mandate {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, tags=["Mandates"])
async def create_mandate(
    mandateData: Mandate,
    currentUser: Dict[str, Any] = Depends(auth.getCurrentActiveUser)
):
    """Create a new mandate"""
    try:
        interfaceGateway = gatewayInterface.getInterface(currentUser)
            
        try:
            createdMandate = interfaceGateway.createMandate(mandateData)
        except ValueError as e:
            raise HTTPException(
                status_code=status.HTTP_400_BAD_REQUEST,
                detail=str(e)
            )
            
        if not createdMandate:
            raise HTTPException(
                status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
                detail="Failed to create mandate"
            )
            
        return createdMandate
    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, tags=["Mandates"])
async def update_mandate(
    mandateId: str,
    mandateData: Mandate,
    currentUser: Dict[str, Any] = Depends(auth.getCurrentActiveUser)
):
    """Update an existing mandate"""
    try:
        interfaceGateway = gatewayInterface.getInterface(currentUser)
        
        # Check if mandate exists
        existingMandate = interfaceGateway.getMandateById(mandateId)
        if not existingMandate:
            raise HTTPException(
                status_code=status.HTTP_404_NOT_FOUND,
                detail=f"Mandate {mandateId} not found"
            )
            
        # Update mandate data
        try:
            updatedMandate = interfaceGateway.updateMandate(mandateId, mandateData)
        except ValueError as e:
            raise HTTPException(
                status_code=status.HTTP_400_BAD_REQUEST,
                detail=str(e)
            )
            
        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], tags=["Mandates"])
async def delete_mandate(
    mandateId: str,
    currentUser: Dict[str, Any] = Depends(auth.getCurrentActiveUser)
):
    """Delete a mandate"""
    try:
        interfaceGateway = gatewayInterface.getInterface(currentUser)
        
        # Check if mandate exists
        existingMandate = interfaceGateway.getMandateById(mandateId)
        if not existingMandate:
            raise HTTPException(
                status_code=status.HTTP_404_NOT_FOUND,
                detail=f"Mandate {mandateId} not found"
            )
            
        # Delete mandate
        try:
            interfaceGateway.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)}"
        )