from abc import abstractmethod

from flask import abort
from notifications_utils.serialised_model import (
    SerialisedModel,
    SerialisedModelCollection,
)


class JSONModel(SerialisedModel):

    def __init__(self, _dict):
        # in the case of a bad request _dict may be `None`
        self._dict = _dict or {}
        for property in self.ALLOWED_PROPERTIES:
            if property in self._dict:
                setattr(self, property, self._dict[property])

    def __bool__(self):
        return self._dict != {}

    def __hash__(self):
        return hash(self.id)

    def __eq__(self, other):
        return self.id == other.id

    def _get_by_id(self, things, id):
        try:
            return next(thing for thing in things if thing['id'] == str(id))
        except StopIteration:
            abort(404)


class ModelList(SerialisedModelCollection):

    @property
    @abstractmethod
    def client_method(self):
        pass

    def __init__(self, *args):
        self.items = self.client_method(*args)