from flask import request
from sqlalchemy.exc import IntegrityError, NoResultFound

from .blueprint import api_library

from ....controller import LibraryController
from ....schema.library.library import Library

import logging
logger = logging.getLogger(__name__)

def update_library_item(library:Library, key, value):
    if key == "id":
        raise AttributeError("id is not updatable")
    try:
        library.__getattribute__(key)
    except AttributeError:
        raise AttributeError(f"{key} not in library")
    library.__setattr__(key, value)

@api_library.route("/<_id>", methods=["PATCH"])
def update_library(_id):
    try:
        data:dict = request.json
        logger.debug(f"data: {data}")
    except Exception as e:
        logger.debug(f"{e}")
        return { "status": "error", "error": "JSON Required" }, 415
    
    try: # TODO: function
        controller = LibraryController(_id)
    except NoResultFound as e:
        logger.debug({e})
        return { "status": "error", "error": "Library not found" }, 404
    
    library = controller.data
    for key, value in data.items():
        try:
            update_library_item(library, key, value)
        except AttributeError as e:
            logger.debug(f"Error updating {e}")
            return { "status": "error", "error": e.name }
        
    try:
        controller.update()
    except IntegrityError as e:
        logger.debug(f"DB Error Creating {e}")
        return { "status": "error", "error": f"{e.orig}" }, 400
    else:     
        return { "status": "ok", "result": controller.data.to_dict() }, 200