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

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

# Import interfaces
import modules.interfaces.gatewayInterface as gatewayInterface
import modules.interfaces.gatewayModel as gatewayModel

# Configure logger
logger = logging.getLogger(__name__)

# Model attributes for User
userAttributes = gatewayModel.getModelAttributes(gatewayModel.User)

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

@router.get("/", response_model=List[Dict[str, Any]], tags=["Users"])
async def get_users(currentUser: Dict[str, Any] = Depends(auth.getCurrentActiveUser)):
    """Get all users in the current mandate"""
    try:
        interfaceGateway = gatewayInterface.getInterface(currentUser)
        return interfaceGateway.getUsers()
    except Exception as e:
        logger.error(f"Error getting users: {str(e)}")
        raise HTTPException(
            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
            detail=f"Failed to get users: {str(e)}"
        )

@router.get("/{userId}", response_model=Dict[str, Any], tags=["Users"])
async def get_user(
    userId: str,
    currentUser: Dict[str, Any] = Depends(auth.getCurrentActiveUser)
):
    """Get a specific user by ID"""
    try:
        interfaceGateway = gatewayInterface.getInterface(currentUser)
        user = interfaceGateway.getUserById(userId)
        
        if not user:
            raise HTTPException(
                status_code=status.HTTP_404_NOT_FOUND,
                detail=f"User {userId} not found"
            )
            
        return user
    except HTTPException:
        raise
    except Exception as e:
        logger.error(f"Error getting user {userId}: {str(e)}")
        raise HTTPException(
            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
            detail=f"Failed to get user: {str(e)}"
        )

@router.post("/", response_model=gatewayModel.User, tags=["Users"])
async def create_user(
    userData: gatewayModel.User,
    currentUser: Dict[str, Any] = Depends(auth.getCurrentActiveUser)
):
    """Create a new user"""
    try:
        # Get admin user for user creation
        interfaceRoot = gatewayInterface.getRootInterface()
            
        try:
            # Convert User model to dict and pass to createUser
            createdUser = interfaceRoot.createUser(
                username=userData.username,
                email=userData.email,
                fullName=userData.fullName,
                language=userData.language,
                disabled=userData.disabled,
                privilege=userData.privilege,
                authenticationAuthority=userData.authenticationAuthority
            )
        except ValueError as e:
            raise HTTPException(
                status_code=status.HTTP_400_BAD_REQUEST,
                detail=str(e)
            )
            
        if not createdUser:
            raise HTTPException(
                status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
                detail="Failed to create user"
            )
            
        return createdUser
    except HTTPException:
        raise
    except Exception as e:
        logger.error(f"Error creating user: {str(e)}")
        raise HTTPException(
            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
            detail=f"Failed to create user: {str(e)}"
        )

@router.put("/{userId}", response_model=gatewayModel.User, tags=["Users"])
async def update_user(
    userId: str,
    userData: gatewayModel.User,
    currentUser: Dict[str, Any] = Depends(auth.getCurrentActiveUser)
):
    """Update an existing user"""
    try:
        # Get admin user for user updates
        interfaceGateway = gatewayInterface.getInterface(currentUser)
        
        # Check if user exists
        existingUser = interfaceGateway.getUserById(userId)
        if not existingUser:
            raise HTTPException(
                status_code=status.HTTP_404_NOT_FOUND,
                detail=f"User {userId} not found"
            )
            
        # Update user data
        try:
            updatedUser = interfaceGateway.updateUser(userId, userData)
        except ValueError as e:
            raise HTTPException(
                status_code=status.HTTP_400_BAD_REQUEST,
                detail=str(e)
            )
            
        if not updatedUser:
            raise HTTPException(
                status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
                detail="Failed to update user"
            )
            
        return updatedUser
    except HTTPException:
        raise
    except Exception as e:
        logger.error(f"Error updating user {userId}: {str(e)}")
        raise HTTPException(
            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
            detail=f"Failed to update user: {str(e)}"
        )

@router.delete("/{userId}", response_model=Dict[str, Any], tags=["Users"])
async def delete_user(
    userId: str,
    currentUser: Dict[str, Any] = Depends(auth.getCurrentActiveUser)
):
    """Delete a user"""
    try:
        interfaceGateway = gatewayInterface.getInterface(currentUser)
        interfaceGateway.deleteUser(userId)
        return {"message": f"User {userId} deleted successfully"}
    except ValueError as e:
        raise HTTPException(
            status_code=status.HTTP_400_BAD_REQUEST,
            detail=str(e)
        )
    except Exception as e:
        logger.error(f"Error deleting user {userId}: {str(e)}")
        raise HTTPException(
            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
            detail=f"Failed to delete user: {str(e)}"
        )