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.es_exam_activity import EsExamActivity
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 ExamActivityCreate(AdminApiBase):
	def validate_request(self, request):
		rules = {
			"exam_requirement_id": "required|exists:api.EsExamRequirement,id",
			# "location_id": "nullable|exists:api.EsLocation,id",
			"session_id": "nullable|exists:api.EsSession,id",
			"code": "required|not_exists:api.EsExamActivity,code",
			"name": "required",
			# "time_slot": "nullable|integer|gte:0",
			"is_scheduled": "nullable",
			"invigilator_suitability": "nullable|array|exists:api.EsSuitability,id",
			"location_suitability": "nullable|array|exists:api.EsSuitability,id",
		}

		attribute = {}

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

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

			old_new_data = {
				"new_data": None,
			}

			action = "exam_activity_create"

			idata = {}
			valid_fields = {f.column for f in EsExamActivity._meta.fields}

			for key, val in request.data.items():
				if key in valid_fields:
					idata[key] = val

			idata["created_by"] = request.user.id
			exam_activity = EsExamActivity.objects.create(**idata)

			old_new_data["new_data"] = get_add_new_data(exam_activity)

			if "invigilator_suitability" in request.data:
				new_ids = request.data.get("invigilator_suitability", [])
				old_new_data = self.update_m2m_field(exam_activity, "invigilator_suitability", None, new_ids, old_new_data)

			if "location_suitability" in request.data:
				new_ids = request.data.get("location_suitability", [])
				old_new_data = self.update_m2m_field(exam_activity, "location_suitability", None, new_ids, old_new_data)

			audit_trail = AuditTrail.objects.create(
				user_id=request.user.id,
				type=self.audit_type,
				ip_address=get_ip(request),
			)
			remark_param = {
				"code": exam_activity.code,
			}

			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)