470 lines
16 KiB
Python
470 lines
16 KiB
Python
"""
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资产分配业务服务层
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"""
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from typing import List, Optional, Dict, Any
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from sqlalchemy.orm import Session, selectinload
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from app.crud.allocation import allocation_order, allocation_item
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from app.crud.asset import asset
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from app.schemas.allocation import (
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AllocationOrderCreate,
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AllocationOrderUpdate,
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AllocationOrderApproval
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)
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from app.core.exceptions import NotFoundException, BusinessException
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class AllocationService:
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"""资产分配服务类"""
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async def get_order(
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self,
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db: Session,
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order_id: int
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) -> Dict[str, Any]:
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"""获取分配单详情"""
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# 使用selectinload预加载关联数据，避免N+1查询
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from app.models.allocation import AllocationOrder
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from app.models.organization import Organization
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from app.models.user import User
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from app.models.allocation import AllocationItem
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obj = db.query(
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AllocationOrder
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).options(
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selectinload(AllocationOrder.items),
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selectinload(AllocationOrder.source_organization.of_type(Organization)),
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selectinload(AllocationOrder.target_organization.of_type(Organization)),
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selectinload(AllocationOrder.applicant.of_type(User)),
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selectinload(AllocationOrder.approver.of_type(User)),
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selectinload(AllocationOrder.executor.of_type(User))
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).filter(
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AllocationOrder.id == order_id
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).first()
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if not obj:
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raise NotFoundException("分配单")
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# 加载关联信息
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return self._load_order_relations(db, obj)
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def get_orders(
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self,
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db: Session,
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skip: int = 0,
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limit: int = 20,
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order_type: Optional[str] = None,
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approval_status: Optional[str] = None,
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execute_status: Optional[str] = None,
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applicant_id: Optional[int] = None,
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target_organization_id: Optional[int] = None,
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keyword: Optional[str] = None
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) -> tuple:
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"""获取分配单列表"""
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items, total = allocation_order.get_multi(
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db=db,
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skip=skip,
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limit=limit,
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order_type=order_type,
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approval_status=approval_status,
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execute_status=execute_status,
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applicant_id=applicant_id,
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target_organization_id=target_organization_id,
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keyword=keyword
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)
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# 加载关联信息
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items_with_relations = [self._load_order_relations(db, item) for item in items]
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return items_with_relations, total
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async def create_order(
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self,
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db: Session,
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obj_in: AllocationOrderCreate,
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applicant_id: int
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):
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"""创建分配单"""
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# 验证资产存在性和状态
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assets = []
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for asset_id in obj_in.asset_ids:
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asset_obj = asset.get(db, asset_id)
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if not asset_obj:
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raise NotFoundException(f"资产ID {asset_id}")
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assets.append(asset_obj)
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# 验证资产状态是否允许分配
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for asset_obj in assets:
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if not self._can_allocate(asset_obj.status, obj_in.order_type):
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raise BusinessException(
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f"资产 {asset_obj.asset_code} 当前状态为 {asset_obj.status}，不允许{self._get_order_type_name(obj_in.order_type)}操作"
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)
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# 生成分配单号
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order_code = await self._generate_order_code(db, obj_in.order_type)
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# 创建分配单
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db_obj = allocation_order.create(
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db=db,
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obj_in=obj_in,
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order_code=order_code,
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applicant_id=applicant_id
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)
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return self._load_order_relations(db, db_obj)
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def update_order(
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self,
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db: Session,
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order_id: int,
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obj_in: AllocationOrderUpdate,
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updater_id: int
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):
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"""更新分配单"""
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db_obj = allocation_order.get(db, order_id)
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if not db_obj:
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raise NotFoundException("分配单")
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# 只有草稿或待审批状态可以更新
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if db_obj.approval_status not in ["pending", "draft"]:
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raise BusinessException("只有待审批状态的分配单可以更新")
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return allocation_order.update(db, db_obj, obj_in, updater_id)
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async def approve_order(
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self,
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db: Session,
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order_id: int,
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approval_in: AllocationOrderApproval,
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approver_id: int
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):
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"""审批分配单"""
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db_obj = allocation_order.get(db, order_id)
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if not db_obj:
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raise NotFoundException("分配单")
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# 检查状态
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if db_obj.approval_status != "pending":
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raise BusinessException("该分配单已审批，无法重复审批")
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# 审批
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db_obj = allocation_order.approve(
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db=db,
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db_obj=db_obj,
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approval_status=approval_in.approval_status,
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approver_id=approver_id,
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approval_remark=approval_in.approval_remark
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)
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# 如果审批通过，执行分配逻辑
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if approval_in.approval_status == "approved":
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await self._execute_allocation_logic(db, db_obj)
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return self._load_order_relations(db, db_obj)
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async def execute_order(
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self,
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db: Session,
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order_id: int,
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executor_id: int
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):
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"""执行分配单"""
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db_obj = allocation_order.get(db, order_id)
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if not db_obj:
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raise NotFoundException("分配单")
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# 检查状态
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if db_obj.approval_status != "approved":
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raise BusinessException("该分配单未审批通过，无法执行")
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if db_obj.execute_status == "completed":
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raise BusinessException("该分配单已执行完成")
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# 执行分配单
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db_obj = allocation_order.execute(db, db_obj, executor_id)
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return self._load_order_relations(db, db_obj)
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def cancel_order(
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self,
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db: Session,
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order_id: int
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) -> bool:
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"""取消分配单"""
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db_obj = allocation_order.get(db, order_id)
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if not db_obj:
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raise NotFoundException("分配单")
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# 检查状态
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if db_obj.execute_status == "completed":
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raise BusinessException("已完成的分配单无法取消")
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allocation_order.cancel(db, db_obj)
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return True
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def delete_order(
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self,
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db: Session,
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order_id: int
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) -> bool:
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"""删除分配单"""
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db_obj = allocation_order.get(db, order_id)
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if not db_obj:
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raise NotFoundException("分配单")
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# 只有草稿或已取消的可以删除
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if db_obj.approval_status not in ["draft", "rejected", "cancelled"]:
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raise BusinessException("只能删除草稿、已拒绝或已取消的分配单")
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return allocation_order.delete(db, order_id)
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def get_order_items(
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self,
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db: Session,
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order_id: int
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) -> List:
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"""获取分配单明细"""
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# 验证分配单存在
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if not allocation_order.get(db, order_id):
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raise NotFoundException("分配单")
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return allocation_item.get_by_order(db, order_id)
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def get_statistics(
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self,
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db: Session,
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applicant_id: Optional[int] = None
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) -> Dict[str, int]:
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"""获取分配单统计信息"""
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return allocation_order.get_statistics(db, applicant_id)
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async def _execute_allocation_logic(
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self,
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db: Session,
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order_obj
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):
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"""执行分配逻辑（审批通过后自动执行）"""
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# 根据单据类型执行不同的逻辑
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if order_obj.order_type == "allocation":
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await self._execute_allocation(db, order_obj)
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elif order_obj.order_type == "transfer":
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await self._execute_transfer(db, order_obj)
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elif order_obj.order_type == "recovery":
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await self._execute_recovery(db, order_obj)
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elif order_obj.order_type == "maintenance":
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await self._execute_maintenance_allocation(db, order_obj)
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elif order_obj.order_type == "scrap":
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await self._execute_scrap_allocation(db, order_obj)
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async def _execute_allocation(self, db: Session, order_obj):
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"""执行资产分配"""
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# 更新明细状态为执行中
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allocation_item.batch_update_execute_status(db, order_obj.id, "executing")
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# 获取明细
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items = allocation_item.get_by_order(db, order_obj.id)
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# 更新资产状态
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from app.services.asset_service import asset_service
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from app.schemas.asset import AssetStatusTransition
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for item in items:
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try:
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# 变更资产状态
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await asset_service.change_asset_status(
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db=db,
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asset_id=item.asset_id,
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status_transition=AssetStatusTransition(
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new_status=item.to_status,
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remark=f"分配单: {order_obj.order_code}"
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),
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operator_id=order_obj.applicant_id
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)
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# 更新明细状态为完成
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allocation_item.update_execute_status(db, item.id, "completed")
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except Exception as e:
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# 更新明细状态为失败
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allocation_item.update_execute_status(
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db,
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item.id,
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"failed",
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failure_reason=str(e)
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)
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async def _execute_transfer(self, db: Session, order_obj):
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"""执行资产调拨"""
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# 调拨逻辑与分配类似，但需要记录调出和调入网点
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await self._execute_allocation(db, order_obj)
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async def _execute_recovery(self, db: Session, order_obj):
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"""执行资产回收"""
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# 回收逻辑
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await self._execute_allocation(db, order_obj)
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async def _execute_maintenance_allocation(self, db: Session, order_obj):
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"""执行维修分配"""
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# 维修分配逻辑
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await self._execute_allocation(db, order_obj)
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async def _execute_scrap_allocation(self, db: Session, order_obj):
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"""执行报废分配"""
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# 报废分配逻辑
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await self._execute_allocation(db, order_obj)
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def _load_order_relations(
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self,
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db: Session,
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obj
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) -> Dict[str, Any]:
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"""加载分配单关联信息"""
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from app.models.user import User
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from app.models.organization import Organization
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result = {
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"id": obj.id,
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"order_code": obj.order_code,
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"order_type": obj.order_type,
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"title": obj.title,
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"source_organization_id": obj.source_organization_id,
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"target_organization_id": obj.target_organization_id,
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"applicant_id": obj.applicant_id,
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"approver_id": obj.approver_id,
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"approval_status": obj.approval_status,
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"approval_time": obj.approval_time,
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"approval_remark": obj.approval_remark,
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"expect_execute_date": obj.expect_execute_date,
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"actual_execute_date": obj.actual_execute_date,
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"executor_id": obj.executor_id,
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"execute_status": obj.execute_status,
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"remark": obj.remark,
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"created_at": obj.created_at,
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"updated_at": obj.updated_at
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}
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# 加载关联信息
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if obj.source_organization_id:
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source_org = db.query(Organization).filter(
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Organization.id == obj.source_organization_id
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).first()
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if source_org:
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result["source_organization"] = {
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"id": source_org.id,
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"org_name": source_org.org_name,
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"org_type": source_org.org_type
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}
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if obj.target_organization_id:
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target_org = db.query(Organization).filter(
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Organization.id == obj.target_organization_id
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).first()
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if target_org:
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result["target_organization"] = {
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"id": target_org.id,
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"org_name": target_org.org_name,
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"org_type": target_org.org_type
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}
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if obj.applicant_id:
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applicant = db.query(User).filter(User.id == obj.applicant_id).first()
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if applicant:
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result["applicant"] = {
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"id": applicant.id,
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"real_name": applicant.real_name,
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"username": applicant.username
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}
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if obj.approver_id:
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approver = db.query(User).filter(User.id == obj.approver_id).first()
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if approver:
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result["approver"] = {
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"id": approver.id,
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"real_name": approver.real_name,
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"username": approver.username
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}
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if obj.executor_id:
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executor = db.query(User).filter(User.id == obj.executor_id).first()
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if executor:
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result["executor"] = {
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"id": executor.id,
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"real_name": executor.real_name,
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"username": executor.username
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}
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# 加载明细
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items = allocation_item.get_by_order(db, obj.id)
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result["items"] = [
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{
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"id": item.id,
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"asset_id": item.asset_id,
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"asset_code": item.asset_code,
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"asset_name": item.asset_name,
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"from_status": item.from_status,
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"to_status": item.to_status,
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"execute_status": item.execute_status,
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"failure_reason": item.failure_reason
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}
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for item in items
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]
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return result
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def _can_allocate(self, asset_status: str, order_type: str) -> bool:
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"""判断资产是否可以分配"""
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# 库存中或使用中的资产可以分配
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if order_type in ["allocation", "transfer"]:
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return asset_status in ["in_stock", "in_use"]
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elif order_type == "recovery":
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return asset_status == "in_use"
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elif order_type == "maintenance":
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return asset_status in ["in_stock", "in_use"]
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elif order_type == "scrap":
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return asset_status in ["in_stock", "in_use", "maintenance"]
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return False
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def _get_order_type_name(self, order_type: str) -> str:
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"""获取单据类型中文名"""
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type_names = {
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"allocation": "分配",
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"transfer": "调拨",
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"recovery": "回收",
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"maintenance": "维修",
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"scrap": "报废"
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}
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return type_names.get(order_type, "操作")
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async def _generate_order_code(self, db: Session, order_type: str) -> str:
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"""生成分配单号"""
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from datetime import datetime
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import random
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import string
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# 单据类型前缀
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prefix_map = {
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"allocation": "AL",
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"transfer": "TF",
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"recovery": "RC",
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"maintenance": "MT",
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"scrap": "SC"
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}
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prefix = prefix_map.get(order_type, "AL")
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# 日期部分
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date_str = datetime.now().strftime("%Y%m%d")
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# 序号部分（4位随机数）
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sequence = "".join(random.choices(string.digits, k=4))
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# 组合单号: AL202501240001
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order_code = f"{prefix}{date_str}{sequence}"
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# 检查是否重复，如果重复则重新生成
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while allocation_order.get_by_code(db, order_code):
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sequence = "".join(random.choices(string.digits, k=4))
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order_code = f"{prefix}{date_str}{sequence}"
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return order_code
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# 创建全局实例
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allocation_service = AllocationService()
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