from rest_framework import status
from rest_framework.exceptions import ValidationError

from api.models.es_session import EsSession
from api.models.es_session_seat import EsSessionSeat
from api.translation import __
from api.utils import log_critical_error, get_exception_detail
from api.validator import BaseValidator
from api.views.admin.base import AdminApiBase


class SessionSeatAssignClear(AdminApiBase):
    def post(self, request):
        try:
            result = self.get_data(request)
            return self.api_response(data=result)
        except ValidationError as e:
            first_message = e.detail["error"]
            errors = e.detail["errors"]
            return self.api_response(error=first_message, errors=errors, code=status.HTTP_400_BAD_REQUEST)
        except Exception as e:
            e_details = get_exception_detail(e)
            log_critical_error(user_id=None, descr=e_details["descr"], url=e_details["url"], trace=e_details["trace"])
            return self.api_response(error=__("message.internal_server_error"), code=status.HTTP_500_INTERNAL_SERVER_ERROR)

    def get_data(self, request):
        rules = {
            "session_id": "required|array|exists:api.EsSession,id",
        }
        attribute = {
            "session_id": __("attr.session_id"),
        }
        validator = BaseValidator(request.data, rules, attribute)
        error = validator.validate()
        if error:
            raise ValidationError(error)

        session_ids = request.data.get("session_id")

        # Clear all seats for the given sessions
        EsSessionSeat.objects.filter(session_id__in=session_ids).delete()

        return {}