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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=[],
)