from rest_framework import status
from rest_framework.exceptions import ValidationError

from api.models.audit_trail import AuditTrail
from api.models.audit_trail_details import AuditTrailDetails
from api.models.tt_student import TtStudent
from api.translation import __
from api.utils import bulk_sync_to_redis, get_exception_detail, get_ip, log_critical_error
from api.validator import BaseValidator
from api.views.admin.base import AdminApiBase
from backend.kafka import send_request
from backend.redis_client import redis_client

class StudentDelete(AdminApiBase):
    def validate_request(self, request):
        rules = {
            "id": "required|array|exists:api.TtStudent,id",
        }
        validator = BaseValidator(request.data, rules, {})
        error = validator.validate()
        if error:
            raise ValidationError(error)

    def post(self, request):
        try:
            self.validate_request(request)

            action = "student_delete"
            ids = request.data.get("id")
            students = TtStudent.objects.filter(id__in=ids)
            student_name = ",".join(students.values_list("name", flat=True))

            students.delete()

            #remove from redis
            redis_student_table = "student"
            redis_data = {
                "delete": {}
            }
            
            for id in ids:
                redis_data["delete"].setdefault(redis_student_table, []).append(id)

            bulk_sync_to_redis(redis_client,redis_data)

            #kafka
            method = action
            kafka_topic = self.kafka_config["MICROSERVICES_TT_TOPIC"]
            if kafka_topic:
                kafka_request_data = {
                    "session_id": request.user.name,
                    "student_ids": ids,
                }
                send_request(kafka_topic, kafka_request_data, None, method)

            audit_trail = AuditTrail.objects.create(
                user_id=request.user.id,
                type=self.audit_type,
                ip_address=get_ip(request),
            )
            AuditTrailDetails.custom_insert(
                audit_trail=audit_trail,
                action=action,
                remark_param={"name": student_name},
            )

            return self.api_response(data={})
        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)