from typing import Any from fastapi import UploadFile from sqlalchemy import func, select, update from sqlalchemy.ext.asyncio import AsyncSession from app.core.base_schema import AuthSchema, PageResultSchema, ImportResultSchema from app.core.base_crud import assert_parents_exist from app.core.bre_audit_ctx import bre_audit_suppress from app.core.exceptions import CustomException from app.core.logger import logger from app.utils.common_util import search_to_dict from app.utils.excel_util import ExcelUtil from .crud import BreedingSeedLotCRUD from .model import SeedLotModel from .schema import ( SeedLotCreateSchema, SeedLotOutSchema, SeedLotQueryParam, SeedLotUpdateSchema, ) from app.api.v1.module_bre.cross_combination.model import CrossCombinationModel from app.api.v1.module_bre.cross_combination.crud import BreedingCrossCombinationCRUD from app.api.v1.module_bre.pollination.model import PollinationModel from app.api.v1.module_bre.pollination.crud import BreedingPollinationCRUD def _is_blank(v: Any) -> bool: return v is None or (isinstance(v, str) and v.strip() == "") def _none_if_blank(v: Any) -> Any: if _is_blank(v): return None return str(v).strip() if isinstance(v, str) else v def _to_int(v: Any) -> int | None: if _is_blank(v): return None try: return int(float(v)) except (TypeError, ValueError): return None async def adjust_used(db: AsyncSession, lot_id: int | None, delta: int) -> None: """种子批已用粒数累加（seedling 引用该批时按出苗数维护，clamp >= 0）。 选择强度链前段：seed_count(获种) → used_count(已用) → remaining 派生。 delta 可正可负（新建累加 / 删除或解除关联回退）。 """ if lot_id is None or not delta: return await db.execute( update(SeedLotModel) .where(SeedLotModel.id == lot_id, SeedLotModel.is_deleted.is_(False)) .values(used_count=func.greatest(func.coalesce(SeedLotModel.used_count, 0) + delta, 0)) ) class SeedLotService: """种子批管理 模块服务层""" def __init__(self, auth: AuthSchema, db: AsyncSession) -> None: self.auth = auth self.db = db async def _check_code(self, code: str, exclude_id: int | None = None) -> None: if _is_blank(code): raise CustomException(msg="种子批号不能为空") conditions = [SeedLotModel.lot_code == code.strip(), SeedLotModel.is_deleted.is_(False)] if exclude_id is not None: conditions.append(SeedLotModel.id != exclude_id) result = await self.db.execute(select(func.count()).select_from(SeedLotModel).where(*conditions)) if result.scalar() or 0: raise CustomException(msg=f"种子批号 {code} 已存在", status_code=409) async def _check_parents(self, data: SeedLotCreateSchema | SeedLotUpdateSchema) -> None: await assert_parents_exist( self.db, [ (CrossCombinationModel, data.combination_id, '杂交组合'), (PollinationModel, data.pollination_id, '授粉记录'), ], ) async def _attach_fk_labels(self, items: list[SeedLotOutSchema]) -> None: if not items: return combo_ids = {getattr(it, "combination_id") for it in items if getattr(it, "combination_id")} if combo_ids: refs = await BreedingCrossCombinationCRUD(self.auth, self.db).get_list(search={"id": ("in", list(combo_ids))}) ref_map = {r.id: getattr(r, "combination_code") for r in refs} for it in items: it.combination_name = ref_map.get(getattr(it, "combination_id")) poll_ids = {getattr(it, "pollination_id") for it in items if getattr(it, "pollination_id")} if poll_ids: refs = await BreedingPollinationCRUD(self.auth, self.db).get_list(search={"id": ("in", list(poll_ids))}) ref_map = {r.id: f"{getattr(r, 'pollination_method') or '授粉'}#{r.id}" for r in refs} for it in items: it.pollination_name = ref_map.get(getattr(it, "pollination_id")) def _fill_remaining(self, items: list[SeedLotOutSchema]) -> None: for it in items: if it.seed_count is not None and it.used_count is not None: it.remaining = max(it.seed_count - it.used_count, 0) else: it.remaining = None async def detail(self, id: int) -> SeedLotOutSchema: obj = await BreedingSeedLotCRUD(self.auth, self.db).get(id=id) if not obj: raise CustomException(msg="该种子批不存在") out = SeedLotOutSchema.model_validate(obj) await self._attach_fk_labels([out]) self._fill_remaining([out]) return out async def get_list( self, search: SeedLotQueryParam | None = None, order_by: list[dict[str, str]] | None = None, ) -> list[SeedLotOutSchema]: obj_list = await BreedingSeedLotCRUD(self.auth, self.db).get_list( search=search_to_dict(search), order_by=order_by ) outs = [SeedLotOutSchema.model_validate(obj) for obj in obj_list] await self._attach_fk_labels(outs) self._fill_remaining(outs) return outs async def page( self, page_no: int, page_size: int, search: SeedLotQueryParam | None = None, order_by: list[dict[str, str]] | None = None, ) -> PageResultSchema[SeedLotOutSchema]: offset = (page_no - 1) * page_size result = await BreedingSeedLotCRUD(self.auth, self.db).page( offset=offset, limit=page_size, order_by=order_by or [{"id": "asc"}], search=search_to_dict(search, {}), out_schema=SeedLotOutSchema, ) await self._attach_fk_labels(result.items) self._fill_remaining(result.items) return result async def create(self, data: SeedLotCreateSchema) -> SeedLotOutSchema: await self._check_code(data.lot_code) await self._check_parents(data) obj = await BreedingSeedLotCRUD(self.auth, self.db).create(data=data) out = SeedLotOutSchema.model_validate(obj) await self._attach_fk_labels([out]) self._fill_remaining([out]) return out async def update(self, id: int, data: SeedLotUpdateSchema) -> SeedLotOutSchema: obj = await BreedingSeedLotCRUD(self.auth, self.db).get(id=id) if not obj: raise CustomException(msg="更新失败，该种子批不存在") if not _is_blank(data.lot_code): await self._check_code(data.lot_code, exclude_id=id) await self._check_parents(data) obj = await BreedingSeedLotCRUD(self.auth, self.db).update(id=id, data=data) out = SeedLotOutSchema.model_validate(obj) await self._attach_fk_labels([out]) self._fill_remaining([out]) return out async def delete(self, ids: list[int]) -> None: if not ids: raise CustomException(msg="删除失败，删除对象不能为空") objs = await BreedingSeedLotCRUD(self.auth, self.db).get_list(search={"id": ("in", ids)}) obj_map = {o.id: o for o in objs} for id_ in ids: if id_ not in obj_map: raise CustomException(msg="删除失败，该种子批不存在") await BreedingSeedLotCRUD(self.auth, self.db).delete(ids=ids) async def list_options(self) -> list[dict[str, Any]]: """供前端下拉选择使用：返回 [{value, label}]。""" obj_list = await BreedingSeedLotCRUD(self.auth, self.db).get_list(order_by=[{"id": "asc"}]) return [{"value": o.id, "label": o.lot_code} for o in obj_list] @staticmethod def batch_export(obj_list: list[dict[str, Any]]) -> bytes: mapping_dict = { "combination_name": "杂交组合", "lot_code": "种子批号", "harvest_year": "收获年份", "seed_count": "收获粒数", "used_count": "已用粒数", "remaining": "剩余粒数", "germination_rate": "发芽率%", "storage_type": "存储类型", "storage_location": "存放位置", "test_date": "检测日期", "remark": "备注", "created_time": "创建时间", "created_by": "创建者", } data = [dict(item) for item in obj_list] for item in data: creator = item.get("created_by") item["created_by"] = creator.get("name", "未知") if isinstance(creator, dict) else "未知" return ExcelUtil.export_list2excel(list_data=data, mapping_dict=mapping_dict) async def batch_import(self, file: UploadFile, update_support: bool = False) -> ImportResultSchema: header_dict = { "杂交组合": "combination_id", "种子批号": "lot_code", "收获年份": "harvest_year", "收获粒数": "seed_count", "已用粒数": "used_count", "发芽率%": "germination_rate", "存储类型": "storage_type", "存放位置": "storage_location", "检测日期": "test_date", "备注": "remark", } try: contents = await file.read() rows = ExcelUtil.read_excel_to_dicts(contents) await file.close() if not rows: raise CustomException(msg="导入文件为空") missing_headers = [h for h in header_dict if h not in rows[0]] if missing_headers: raise CustomException(msg=f"导入文件缺少必要的列: {', '.join(missing_headers)}") combo_refs = await BreedingCrossCombinationCRUD(self.auth, self.db).get_list(order_by=[{"id": "asc"}]) combo_map = {getattr(r, "combination_code"): r.id for r in combo_refs} mapped_rows = [] for row in rows: mapped_rows.append({en: row.get(ch) for ch, en in header_dict.items()}) required_fields = ["combination_id", "lot_code"] errors = [] for field in required_fields: missing_indices = [i + 1 for i, r in enumerate(mapped_rows) if _is_blank(r.get(field))] if missing_indices: field_name = next(k for k, v in header_dict.items() if v == field) rows_str = "、".join(str(i) for i in missing_indices) errors.append(f"{field_name}不能为空，第{rows_str}行") if errors: raise CustomException(msg=f"导入失败，以下行缺少必要字段：\n{'; '.join(errors)}") error_msgs: list[str] = [] success_count = 0 crud = BreedingSeedLotCRUD(self.auth, self.db) # 批量导入：抑制逐行审计，仅导入结束汇总记一条 IMPORT 审计行 with bre_audit_suppress(): for i, row in enumerate(mapped_rows, start=1): try: combo_val = combo_map.get(str(row.get("combination_id")).strip()) if not _is_blank(row.get("combination_id")) else None fields = { "combination_id": combo_val, "lot_code": _none_if_blank(row.get("lot_code")), "harvest_year": _to_int(row.get("harvest_year")), "seed_count": _to_int(row.get("seed_count")), "used_count": _to_int(row.get("used_count")) or 0, "germination_rate": _none_if_blank(row.get("germination_rate")), "storage_type": _none_if_blank(row.get("storage_type")), "storage_location": _none_if_blank(row.get("storage_location")), "test_date": _none_if_blank(row.get("test_date")), "remark": _none_if_blank(row.get("remark")), } create_data = SeedLotCreateSchema(**fields) await self._check_code(create_data.lot_code) await self._check_parents(create_data) await crud.create(data=create_data) success_count += 1 except Exception as e: error_msgs.append(f"第{i}行: {e!s}") continue from app.api.v1.module_bre.audit.service import AuditLogService await AuditLogService.write( self.db, entity_type="bre_seed_lot", entity_id=None, action="IMPORT", new_value=f"valid={success_count}, invalid={len(error_msgs)}", created_id=self.auth.user.id if self.auth.user.id else None, ) return ImportResultSchema( valid_count=success_count, invalid_count=len(error_msgs), message_list=error_msgs, ) except Exception as e: logger.error(f"批量导入种子批管理失败: {e!s}") raise CustomException(msg=f"导入失败: {e!s}") @staticmethod def import_template_download() -> bytes: header_list = [ "杂交组合", "种子批号", "收获年份", "收获粒数", "已用粒数", "发芽率%", "存储类型", "存放位置", "检测日期", "备注", ] return ExcelUtil.get_excel_template( header_list=header_list, selector_header_list=[], option_list=[], )