from rest_framework import status
from rest_framework.exceptions import ValidationError

from api.models import EsSessionStart, EsSessionStartDay
from api.models.audit_trail import AuditTrail
from api.models.audit_trail_details import AuditTrailDetails
from api.translation import __
from api.utils import log_critical_error, get_exception_detail, get_add_new_data, get_ip
from api.validator import BaseValidator
from api.views.admin.base import AdminApiBase


class SessionStartCreate(AdminApiBase):
    def validate_request(self,request):
        status_code_string = ",".join(str(v) for v in EsSessionStart.STATUS_TO_CODE.values())
        rules = {
            "exam_period_id": "required|exists:api.EsExamPeriod,id",
            "code": "required|not_exists:api.EsSessionStart,code",
            "start_time": "required|time",
            "days": "nullable|array",
            "status": "required|in:"+status_code_string,
        }

        # if need rename field, can put here
        attribute = {
            # "email": __("attr.email"),
        }

        validator = BaseValidator(request.data,rules,attribute)
        error = validator.validate()
        if error:
            raise ValidationError(error)

        days = request.data.get("days", [])
        if days:
            rules = {
                "days": "required|integer|gte:0|lte:6",
            }

            for day in days:
                validator = BaseValidator({
                    "days": day
                }, rules, attribute)
                error = validator.validate()
                if error:
                    raise ValidationError(error)

    def post(self, request):
        # Validate input
        try:
            self.validate_request(request)

            old_new_data = {
                "new_data": None,
            }

            action="session_start_create" # this is for audit log only

            idata = {}
            ignore_field = []
            valid_fields = {f.column for f in EsSessionStart._meta.fields}

            for key, val in request.data.items():
                if key not in ignore_field:
                    match key:
                        case _:
                            if key in valid_fields:#for insert, key can check in default part, cause if got special handle, i can check the way to use key also
                                # default the key will same as db column name
                                idata[key] = val

            idata['created_by'] = request.user.id
            new_obj = EsSessionStart.objects.create(**idata)

            old_new_data['new_data'] = get_add_new_data(new_obj)

            days = request.data.get("days", [])
            if days:
                EsSessionStartDay.bulk_insert(new_obj.id, days)
                old_new_data.setdefault("new_data", [])["days"]= days

            # insert audit trail and details
            # can insert the parent first, then only insert details
            audit_trail = AuditTrail.objects.create(
                user_id=request.user.id,
                type=self.audit_type,
                ip_address=get_ip(request)
            )
            remark_param = {
                "code":new_obj.code,
            }

            # call to a function for insert details, so in future if want change to used worker, can modify in function only
            AuditTrailDetails.custom_insert(
                audit_trail=audit_trail,
                action=action,
                remark_param=remark_param,
                new_data=old_new_data['new_data'],
            )
            response = {

            }

            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)