from typing import Dict

from sqlalchemy.sql import Selectable

from awokado.exceptions import (
    CreateResourceForbidden,
    ReadResourceForbidden,
    UpdateResourceForbidden,
    DeleteResourceForbidden,
)


class BaseAuth:
    """
    CREATE = {
    'ROLE NAME': Boolean value
    }

    Example:
    'ADMIN': True,
    'GUEST': False

    READ,
    UPDATE,
    DELETE

    """

    CREATE: Dict[str, bool] = {
        # 'ROLE NAME': Boolean value,
        #  Example:
        # 'ADMIN': True,
        # 'GUEST': False,
    }
    READ: Dict[str, bool] = {}
    UPDATE: Dict[str, bool] = {}
    DELETE: Dict[str, bool] = {}

    @classmethod
    def can_create(cls, session, payload, user_id: int, skip_exc=False):
        if skip_exc:
            return False
        raise CreateResourceForbidden()

    @classmethod
    def can_read(cls, ctx, query: Selectable, skip_exc=False):
        if skip_exc:
            return False

        raise ReadResourceForbidden()

    @classmethod
    def can_update(cls, session, user_id: int, obj_ids: list, skip_exc=False):
        if skip_exc:
            return False

        raise UpdateResourceForbidden()

    @classmethod
    def can_delete(cls, session, user_id: int, obj_ids: list, skip_exc=False):
        if skip_exc:
            return False

        raise DeleteResourceForbidden()

    @classmethod
    def _get_read_query(cls, ctx, query: Selectable):
        return query
