from collections import defaultdict
from rest_framework import serializers, status

from api.models import TtDepartment, TtZone, TtTag, TtUsagePreference, TtFreeBlock, TtSetting, TtAcademicTerm, \
    TtTimeBlock, TtActivity
from api.views.admin.base import AdminApiBase
from api.validator import BaseValidator
from api.utils import log_critical_error, get_exception_detail, start_slot_end_slot_to_pattern
from rest_framework.exceptions import ValidationError
from api.translation import __


class JtaSplitRules(AdminApiBase):
    def validate_request(self,request):
        rules = {
            "activity_id": "required|exists:api.TtActivity,id",
        }
        # if need rename field, can put here
        attribute = {
            # "email": __("attr.email"),
        }
        # validate id first, cause need get free_block by id, if wrong id direct return error
        validator = BaseValidator(request.data,rules,attribute)
        error = validator.validate()
        if error:
            raise ValidationError(error)
        # custom error after basic validation

        if error:
            raise ValidationError(error)

    def post(self, request):
        # Validate input
        try:
            setting_params = {
                "slot_per_week",
            }
            settings = TtSetting.get_multiple_setting(setting_params)
            slot_per_week = int(settings["slot_per_week"])
            self.api_log_skip_outgoing_data=True
            self.validate_request(request)
            activity_id = request.data.get("activity_id")

            child_activity = (
                TtActivity.objects.filter(
                    id=activity_id,
                )
                .prefetch_related(
                    "jta_children",  # actually is getting this activity jta_parent
                ).first()
            )

            info = None
            if child_activity:
                info = {
                    "code": child_activity.code,
                    "name": child_activity.name,
                    "desc": child_activity.desc,
                    "jta_parent_activities": [
                        {
                            "id": jta_parent.id,
                            "code": jta_parent.code,
                            "name": jta_parent.name,
                            "desc": jta_parent.desc
                        }
                        for jta_parent in child_activity.jta_children.all()
                    ]
                }

            data = {}
            data['delete_confirmation_api'] = False
            data["allow_remove"] = [

            ]

            response = {
                "info": info,
                "rules": data,
            }

            return self.api_response(data=response)
        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)