from collections import defaultdict from django.db.models import Prefetch from rest_framework import serializers, status from api.models import TtLocation, TtLocationSuitability, TtSetting, TtModule, TtWeekPattern, TtAvailability, \ TtStartPreference, TtUsagePreference, TtAcademicTerm, TtWeek from api.models.audit_trail import AuditTrail from api.models.audit_trail_details import AuditTrailDetails from api.views.admin.base import AdminApiBase from api.validator import BaseValidator from api.utils import decrypt_aes_128_cbc, encrypt_aes_128_cbc, generate_kafka_data, log_critical_error, get_exception_detail, \ get_add_new_data, get_ip, bulk_sync_to_redis, convert_to_redis_week, get_next_available_code from rest_framework.exceptions import ValidationError from api.translation import __ from backend.kafka import send_request from backend.redis_client import redis_client class ModuleCreate(AdminApiBase): def validate_request(self,request,settings): slot_per_week = settings["slot_per_week"] rules = { "academic_term_id": "required|exists:api.TtAcademicTerm,id", "code": "nullable|not_exists:api.TtModule,code", "name": "required", "desc": "nullable", "department_id": "nullable|exists:api.TtDepartment,id", "planned_size": "required|integer", "credit_provided": "required|integer", "week_pattern_id": "nullable|exists:api.TtWeekPattern,id", "week_pattern": "nullable|array|exists:api.TtWeek,id", "availability_id": "nullable|exists:api.TtAvailability,id", "availability_pattern": "nullable|char_count:" + slot_per_week + "|regex:[01]+", "start_preference_id": "nullable|exists:api.TtStartPreference,id", "start_preference_pattern": "nullable|char_count:" + slot_per_week + "|regex:[1-9]+", "usage_preference_id": "nullable|exists:api.TtUsagePreference,id", "usage_preference_pattern": "nullable|char_count:" + slot_per_week + "|regex:[1-9]+", "tag": "nullable|array|exists:api.TtTag,id", } # 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) # custom error after basic validation # 2025-10-01 PMO say no need check too much in pattern first, if not take too much time to do it, wait until got feedback only depends how to check # if using pattern, the pattern must follow default rules def post(self, request): # Validate input try: setting_params = { "slot_per_week", "minute_per_slot", } settings = TtSetting.get_multiple_setting(setting_params) minute_per_slot = int(settings["minute_per_slot"]) self.validate_request(request,settings) academic_term_id = request.data.get("academic_term_id") academic_term = TtAcademicTerm.objects.filter(id=academic_term_id).prefetch_related(Prefetch("week", queryset=TtWeek.objects.order_by("week"))).first() default_availability_pattern = academic_term.default_availability default_start_preference_pattern = academic_term.default_start default_usage_preference_pattern = academic_term.default_usage default_week_pattern = [w.id for w in academic_term.week.all()] week_pattern_for_redis = convert_to_redis_week(list([w.week for w in academic_term.week.all()])) old_new_data = { "old_data": None, "new_data": None, } action="module_create" # this is for audit log only # this 3 pattern if got give id, force pattern to null availability_id = request.data.get("availability_id") availability_pattern = request.data.get("availability_pattern") if availability_id: availability_pattern = None start_preference_id = request.data.get("start_preference_id") start_preference_pattern = request.data.get("start_preference_pattern") if start_preference_id: start_preference_pattern = None usage_preference_id = request.data.get("usage_preference_id") usage_preference_pattern = request.data.get("usage_preference_pattern") if usage_preference_id: usage_preference_pattern = None idata = {} # not insert to module table ignore_field = ['tag','timestamp','signature'] valid_fields = {f.column for f in TtModule._meta.fields} for key, val in request.data.items(): if key not in ignore_field: match key: case "availability_pattern" | "start_preference_pattern" | "usage_preference_pattern": # got extra handle the value for these key, so the param same name as the key, so can using this code to handle idata[key] = locals()[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 # if FE no pass in this 2 value, the loop wont add default pattern, so having this code to handle default pattern if not availability_id and not availability_pattern: idata['availability_pattern'] = default_availability_pattern if not usage_preference_id and not usage_preference_pattern: idata['usage_preference_pattern'] = default_usage_preference_pattern if not start_preference_id and not start_preference_pattern: idata['start_preference_pattern'] = default_start_preference_pattern # if FE no pass in code or is null or empty, will used default code code = request.data.get("code") if not code: idata["code"] = get_next_available_code(TtModule, "code", "MV", 10) idata['status'] = TtModule.STATUS_TO_CODE['active'] idata['created_by'] = request.user.id module = TtModule.objects.create(**idata) old_new_data['new_data']=get_add_new_data(module) # custom week pattern store in relation, so need handle like this # for create part, no need have a if else to check got pass in or not, if null just update as null only week_pattern_id = request.data.get("week_pattern_id") week_pattern = request.data.get("week_pattern") if week_pattern_id: week_pattern = None week_pattern_for_redis = [] else : if week_pattern: week_pattern_for_redis = convert_to_redis_week(list(TtWeek.objects.filter(id__in=week_pattern).values_list("week",flat=True))) old_new_data = self.update_m2m_field(module,'week',None,week_pattern,old_new_data) else: old_new_data = self.update_m2m_field(module, 'week', None, default_week_pattern, old_new_data) new_ids = request.data.get("tag", []) old_new_data = self.update_m2m_field(module,'tag',None,new_ids,old_new_data,False,True) redis_module_table = "module" # from here make it same name as db first, got different, only do extra handle redis_module_column = [ "id","code","name","department_id","academic_term_id","planned_size","real_size","credit_provided", "week_pattern_id","week_pattern","availability_id","availability_pattern","start_preference_id", "start_preference_pattern","usage_preference_id","usage_preference_pattern" ] redis_data = { "insert": {}, } redis_module_data = {} for column in redis_module_column: match column: case "week_pattern": redis_module_data[column] = week_pattern_for_redis or [] case "usage_preference_id" | "availability_id" | "start_preference_id" | "week_pattern_id": # jose request if no id, dun store null, want to store "0" value = getattr(module, column) redis_module_data[column] = 0 if value in (None,"") else value case _: redis_module_data[column] = getattr(module, column) redis_data["insert"].setdefault(redis_module_table, []).append(redis_module_data) bulk_sync_to_redis(redis_client, redis_data) # kafka push method = "module_create" kafka_topic = self.kafka_config['MICROSERVICES_TT_TOPIC'] new_data = old_new_data.get("new_data") kafka_module = [] if new_data and kafka_topic: relation_fields = [ "week", "tag", ] kafka_module = generate_kafka_data(new_data, relation_fields) kafka_request_data = { "session_id": request.user.name, "module": kafka_module, } send_request(kafka_topic, kafka_request_data, None ,method) # 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 = { "name":module.name, } # 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)