from apps.wf.serializers import TicketSimpleSerializer from apps.system.models import User from apps.wf.models import CustomField, State, Ticket, TicketFlow, Transition, Workflow from rest_framework.exceptions import APIException, PermissionDenied, ValidationError from django.utils import timezone from datetime import timedelta import random from .scripts import GetParticipants, HandleScripts from apps.utils.queryset import get_parent_queryset class WfService(object): @staticmethod def get_worlflow_states(workflow: Workflow): """ 获取工作流状态列表 """ return State.objects.filter(workflow=workflow, is_deleted=False).order_by('sort') @staticmethod def get_workflow_transitions(workflow: Workflow): """ 获取工作流流转列表 """ return Transition.objects.filter(workflow=workflow, is_deleted=False) @staticmethod def get_workflow_start_state(workflow: Workflow): """ 获取工作流初始状态 """ try: wf_state_obj = State.objects.get(workflow=workflow, type=State.STATE_TYPE_START, is_deleted=False) return wf_state_obj except: raise APIException('工作流状态配置错误') @staticmethod def get_workflow_end_state(workflow: Workflow): """ 获取工作流结束状态 """ try: wf_state_obj = State.objects.get(workflow=workflow, type=State.STATE_TYPE_END, is_deleted=False) return wf_state_obj except: raise APIException('工作流状态配置错误') @staticmethod def get_workflow_custom_fields(workflow: Workflow): """ 获取工单字段 """ return CustomField.objects.filter(is_deleted=False, workflow=workflow).order_by('sort') @staticmethod def get_workflow_custom_fields_list(workflow: Workflow): """ 获取工单字段key List """ return list(CustomField.objects.filter(is_deleted=False, workflow=workflow).order_by('sort').values_list('field_key', flat=True)) @classmethod def get_ticket_transitions(cls, ticket: Ticket): """ 获取工单当前状态下可用的流转条件 """ return cls.get_state_transitions(ticket.state) @classmethod def get_state_transitions(cls, state: State): """ 获取状态可执行的操作 """ return Transition.objects.filter(is_deleted=False, source_state=state).all() @classmethod def get_ticket_steps(cls, ticket: Ticket): steps = cls.get_worlflow_states(ticket.workflow) nsteps_list = [] for i in steps: if ticket.state == i or (not i.is_hidden): nsteps_list.append(i) return nsteps_list @classmethod def get_ticket_transitions(cls, ticket: Ticket): """ 获取工单可执行的操作 """ return cls.get_state_transitions(ticket.state) @classmethod def get_transition_by_args(cls, kwargs: dict): """ 查询并获取流转 """ kwargs['is_deleted'] = False return Transition.objects.filter(**kwargs).all() @classmethod def get_ticket_sn(cls, workflow: Workflow): """ 生成工单流水号 """ now = timezone.now() today = str(now)[:10]+' 00:00:00' next_day = str(now+timedelta(days=1))[:10]+' 00:00:00' ticket_day_count_new = Ticket.objects.filter( create_time__gte=today, create_time__lte=next_day, workflow=workflow).count()+1 return '%s_%04d%02d%02d%04d' % (workflow.sn_prefix, now.year, now.month, now.day, ticket_day_count_new) @classmethod def get_next_state_by_transition_and_ticket_info(cls, ticket: Ticket, transition: Transition, new_ticket_data: dict = {}) -> object: """ 获取下个节点状态 """ destination_state = transition.destination_state ticket_all_value = cls.get_ticket_all_field_value(ticket) ticket_all_value.update(**new_ticket_data) for key, value in ticket_all_value.items(): if isinstance(ticket_all_value[key], str): ticket_all_value[key] = "'" + ticket_all_value[key] + "'" if transition.condition_expression: for i in transition.condition_expression: expression = i['expression'].format(**ticket_all_value) import datetime import time # 用于支持条件表达式中对时间的操作 if eval(expression, {'__builtins__': None}, {'datetime': datetime, 'time': time}): destination_state = State.objects.get(pk=i['target_state']) return destination_state return destination_state @classmethod def get_ticket_state_participant_info(cls, state: State, ticket: Ticket, new_ticket_data: dict = {}, handler: User = None): """ 获取工单目标状态实际的处理人, 处理人类型 """ if state.type == State.STATE_TYPE_START: """ 回到初始状态 """ return dict(destination_participant_type=State.PARTICIPANT_TYPE_PERSONAL, destination_participant=ticket.create_by.id, multi_all_person={}) elif state.type == State.STATE_TYPE_END: """ 到达结束状态 """ return dict(destination_participant_type=0, destination_participant=0, multi_all_person={}) multi_all_person_dict = {} destination_participant_type, destination_participant = state.participant_type, state.participant if destination_participant_type == State.PARTICIPANT_TYPE_FIELD: destination_participant = new_ticket_data.get(destination_participant, 0) if destination_participant \ in new_ticket_data else Ticket.ticket_data.get(destination_participant, 0) elif destination_participant_type == State.PARTICIPANT_TYPE_FORMCODE: # 代码获取 destination_participant = getattr(GetParticipants, destination_participant)( state=state, ticket=ticket, new_ticket_data=new_ticket_data, hander=handler) elif destination_participant_type == State.PARTICIPANT_TYPE_DEPT: # 部门 destination_participant = list(User.objects.filter( dept__in=destination_participant).values_list('id', flat=True)) elif destination_participant_type == State.PARTICIPANT_TYPE_ROLE: # 角色 user_queryset = User.objects.filter(roles__in=destination_participant) # 如果选择了角色, 需要走过滤策略 if state.filter_policy == 1: depts = get_parent_queryset(ticket.belong_dept) user_queryset = user_queryset.filter(dept__in=depts) elif state.filter_policy == 2: depts = get_parent_queryset(ticket.create_by.dept) user_queryset = user_queryset.filter(dept__in=depts) elif state.filter_policy == 3: depts = get_parent_queryset(handler.dept) user_queryset = user_queryset.filter(dept__in=depts) destination_participant = list(user_queryset.values_list('id', flat=True)) if type(destination_participant) == list: destination_participant_type = State.PARTICIPANT_TYPE_MULTI destination_participant = list(set(destination_participant)) if len(destination_participant) == 1: # 如果只有一个人 destination_participant_type = State.PARTICIPANT_TYPE_PERSONAL destination_participant = destination_participant[0] else: destination_participant_type = State.PARTICIPANT_TYPE_PERSONAL if destination_participant_type == State.PARTICIPANT_TYPE_MULTI: if state.distribute_type == State.STATE_DISTRIBUTE_TYPE_RANDOM: destination_participant = random.choice(destination_participant) elif state.distribute_type == State.STATE_DISTRIBUTE_TYPE_ALL: for i in destination_participant: multi_all_person_dict[i] = {} return dict(destination_participant_type=destination_participant_type, destination_participant=destination_participant, multi_all_person=multi_all_person_dict) @classmethod def ticket_handle_permission_check(cls, ticket: Ticket, user: User) -> dict: transitions = cls.get_state_transitions(ticket.state) if not transitions: return dict(permission=True, msg="工单当前状态无需操作") current_participant_count = 0 participant_type = ticket.participant_type participant = ticket.participant state = ticket.stateF if participant_type == State.PARTICIPANT_TYPE_PERSONAL: if user.id != participant: return dict(permission=False, msg="非当前处理人", need_accept=False) elif participant_type in [State.PARTICIPANT_TYPE_MULTI, State.PARTICIPANT_TYPE_DEPT, State.PARTICIPANT_TYPE_ROLE]: if user.id not in participant: return dict(permission=False, msg="非当前处理人", need_accept=False) current_participant_count = len(participant) if current_participant_count == 1: if [user.id] == participant or user.id == participant: pass else: return dict(permission=False, msg="非当前处理人", need_accept=False) elif current_participant_count > 1 and state.distribute_type == State.STATE_DISTRIBUTE_TYPE_ACTIVE: if user.id not in participant: return dict(permission=False, msg="非当前处理人", need_accept=False) return dict(permission=False, msg="需要先接单再处理", need_accept=True) if ticket.in_add_node: return dict(permission=False, msg="工单当前处于加签中,请加签完成后操作", need_accept=False) return dict(permission=True, msg="", need_accept=False) @classmethod def check_dict_has_all_same_value(cls, dict_obj: object) -> tuple: """ check whether all key are equal in a dict :param dict_obj: :return: """ value_list = [] for key, value in dict_obj.items(): value_list.append(value) value_0 = value_list[0] for value in value_list: if value_0 != value: return False return True @classmethod def get_ticket_all_field_value(cls, ticket: Ticket) -> dict: """ 工单所有字段的值 get ticket's all field value :param ticket: :return: """ # 获取工单基础表中的字段中的字段信息 field_info_dict = TicketSimpleSerializer(instance=ticket).data # 获取自定义字段的值 custom_fields_queryset = cls.get_workflow_custom_fields(ticket.workflow) for i in custom_fields_queryset: field_info_dict[i.field_key] = ticket.ticket_data.get(i.field_key, None) return field_info_dict @classmethod def handle_ticket(cls, ticket: Ticket, transition: Transition, new_ticket_data: dict = {}, handler: User = None, suggestion: str = '', created: bool = False, by_timer: bool = False, by_task: bool = False, by_hook: bool = False): source_state = ticket.state source_ticket_data = ticket.ticket_data # 校验处理权限 if not handler or not created: # 没有处理人意味着系统触发不校验处理权限 result = WfService.ticket_handle_permission_check(ticket, handler) if result.get('permission') is False: raise PermissionDenied(result.get('msg')) # 校验表单必填项目 if transition.field_require_check or not created: for key, value in ticket.state.state_fields.items(): if int(value) == State.STATE_FIELD_REQUIRED: if key not in new_ticket_data or not new_ticket_data[key]: raise ValidationError('字段{}必填'.format(key)) destination_state = cls.get_next_state_by_transition_and_ticket_info(ticket, transition, new_ticket_data) multi_all_person = ticket.multi_all_person if multi_all_person: multi_all_person[handler.id] = dict(transition=transition.id) # 判断所有人处理结果是否一致 if WfService.check_dict_has_all_same_value(multi_all_person): participant_info = WfService.get_ticket_state_participant_info( destination_state, ticket, new_ticket_data) destination_participant_type = participant_info.get('destination_participant_type', 0) destination_participant = participant_info.get('destination_participant', 0) multi_all_person = {} else: # 处理人没有没有全部处理完成或者处理动作不一致 destination_participant_type = ticket.participant_type destination_state = ticket.state # 保持原状态 destination_participant = [] for key, value in multi_all_person.items(): if not value: destination_participant.append(key) else: # 当前处理人类型非全部处理 participant_info = WfService.get_ticket_state_participant_info(destination_state, ticket, new_ticket_data) destination_participant_type = participant_info.get('destination_participant_type', 0) destination_participant = participant_info.get('destination_participant', 0) multi_all_person = participant_info.get('multi_all_person', {}) # 更新工单信息：基础字段及自定义字段， add_relation字段 需要下个处理人是部门、角色等的情况 ticket.state = destination_state ticket.participant_type = destination_participant_type ticket.participant = destination_participant ticket.multi_all_person = multi_all_person if destination_state.type == State.STATE_TYPE_END: ticket.act_state = Ticket.TICKET_ACT_STATE_FINISH elif destination_state.type == State.STATE_TYPE_START: ticket.act_state = Ticket.TICKET_ACT_STATE_DRAFT else: ticket.act_state = Ticket.TICKET_ACT_STATE_ONGOING if transition.attribute_type == Transition.TRANSITION_ATTRIBUTE_TYPE_REFUSE: ticket.act_state = Ticket.TICKET_ACT_STATE_BACK # 只更新必填和可选的字段 if not created: for key, value in source_state.state_fields.items(): if value in (State.STATE_FIELD_REQUIRED, State.STATE_FIELD_OPTIONAL): if key in new_ticket_data: source_ticket_data[key] = new_ticket_data[key] ticket.ticket_data = source_ticket_data ticket.save() # 更新工单流转记录 if not by_task: TicketFlow.objects.create(ticket=ticket, state=source_state, ticket_data=WfService.get_ticket_all_field_value(ticket), suggestion=suggestion, participant_type=State.PARTICIPANT_TYPE_PERSONAL, participant=handler, transition=transition) if created: if source_state.participant_cc: TicketFlow.objects.create(ticket=ticket, state=source_state, participant_type=0, intervene_type=Transition.TRANSITION_INTERVENE_TYPE_CC, participant=None, participant_cc=source_state.participant_cc) # 目标状态需要抄送 if destination_state.participant_cc: TicketFlow.objects.create(ticket=ticket, state=destination_state, participant_type=0, intervene_type=Transition.TRANSITION_INTERVENE_TYPE_CC, participant=None, participant_cc=destination_state.participant_cc) # 如果目标状态是脚本则执行 if destination_state.participant_type == State.PARTICIPANT_TYPE_ROBOT: getattr(HandleScripts, destination_state.participant)(ticket) return ticket