功能：实现客户现场使用记录

shierfeng-fastapi-backend/module_business/service/usage_service.py

@@ -0,0 +1,524 @@
+"""客户现场使用服务。"""
+
+import hashlib
+import json
+import secrets
+from datetime import datetime
+from typing import Any, NoReturn
+
+from sqlalchemy.exc import IntegrityError
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from common.vo import CrudResponseModel, PageModel
+from exceptions.exception import PermissionException, ServiceException
+from module_admin.entity.vo.user_vo import CurrentUserModel
+from module_business.dao.access_dao import AccessDao
+from module_business.dao.inventory_dao import InventoryDao
+from module_business.dao.master_dao import MasterDao
+from module_business.dao.operation_dao import OperationDao
+from module_business.domain.enums import PalletEventType, PalletFlowState
+from module_business.domain.pallet_state_machine import PalletStateMachine
+from module_business.entity.do.operation_do import BizPalletEvent, BizUsageRecord
+from module_business.entity.vo.master_vo import LinePageQueryModel
+from module_business.entity.vo.operation_vo import (
+    BusinessOptionModel,
+    PalletScanResponseModel,
+    UsageCreateModel,
+    UsageModel,
+    UsagePageQueryModel,
+)
+from module_business.service.access_service import AccessService
+
+
+class UsageService:
+    """客户现场使用服务层。"""
+
+    @staticmethod
+    def _current_identity(current_user: CurrentUserModel) -> tuple[int, str]:
+        user = current_user.user
+        if user is None or user.user_id is None or user.user_id <= 0 or not user.user_name:
+            raise ServiceException(message='当前用户信息无效')
+        return user.user_id, user.user_name
+
+    @staticmethod
+    def _is_admin(current_user: CurrentUserModel) -> bool:
+        return bool(current_user.user and current_user.user.admin)
+
+    @classmethod
+    async def _site_scope(
+        cls,
+        query_db: AsyncSession,
+        current_user: CurrentUserModel,
+    ) -> list[int] | None:
+        if cls._is_admin(current_user):
+            return None
+        user_id, _ = cls._current_identity(current_user)
+        return sorted(set(await AccessDao.list_user_site_ids(query_db, user_id)))
+
+    @classmethod
+    def _raise_pallet_not_accessible(
+        cls,
+        current_user: CurrentUserModel,
+        admin_message: str = '托盘不存在',
+    ) -> NoReturn:
+        if cls._is_admin(current_user):
+            raise ServiceException(message=admin_message)
+        raise PermissionException(data='', message='无权访问该托盘')
+
+    @classmethod
+    async def _assert_pallet_site_access(
+        cls,
+        query_db: AsyncSession,
+        current_user: CurrentUserModel,
+        site_id: int,
+        *,
+        for_update: bool = False,
+    ) -> None:
+        try:
+            if for_update:
+                await AccessService.assert_site_access(
+                    query_db,
+                    current_user,
+                    site_id,
+                    for_update=True,
+                )
+            else:
+                await AccessService.assert_site_access(query_db, current_user, site_id)
+        except PermissionException:
+            if cls._is_admin(current_user):
+                raise
+            cls._raise_pallet_not_accessible(current_user)
+
+    @classmethod
+    def _raise_usage_not_accessible(cls, current_user: CurrentUserModel) -> NoReturn:
+        if cls._is_admin(current_user):
+            raise ServiceException(message='使用记录不存在')
+        raise PermissionException(data='', message='无权访问该使用记录')
+
+    @staticmethod
+    def _record_value(record: Any, field: str) -> Any:
+        if not isinstance(record, dict):
+            return getattr(record, field)
+        if field in record:
+            return record[field]
+        words = field.split('_')
+        alias = words[0] + ''.join(word.capitalize() for word in words[1:])
+        return record.get(alias)
+
+    @staticmethod
+    def _build_request_hash(page_object: UsageCreateModel) -> str:
+        payload = json.dumps(
+            {
+                'qr_token': page_object.qr_token.strip(),
+                'line_id': page_object.line_id,
+                'used_packages': page_object.used_packages,
+            },
+            sort_keys=True,
+            separators=(',', ':'),
+        ).encode()
+        return hashlib.sha256(payload).hexdigest()
+
+    @staticmethod
+    def _is_exact_idempotent_result(
+        usage: BizUsageRecord,
+        page_object: UsageCreateModel,
+        request_hash: str,
+    ) -> bool:
+        return usage.idempotency_key == page_object.idempotency_key and usage.request_hash == request_hash
+
+    @staticmethod
+    def _success(usage_id: int) -> CrudResponseModel:
+        return CrudResponseModel(is_success=True, message='使用成功', result=usage_id)
+
+    @classmethod
+    async def _lock_and_reauthorize_usage_site(
+        cls,
+        query_db: AsyncSession,
+        site_id: int,
+        current_user: CurrentUserModel,
+    ) -> None:
+        site = await MasterDao.get_site(query_db, site_id, for_update=True)
+        try:
+            await AccessService.assert_site_access(
+                query_db,
+                current_user,
+                site_id,
+                for_update=True,
+            )
+        except PermissionException:
+            if cls._is_admin(current_user):
+                raise
+            cls._raise_usage_not_accessible(current_user)
+        if site is None:
+            raise ServiceException(message='客户现场不存在')
+
+    @classmethod
+    async def _recover_integrity_error(
+        cls,
+        query_db: AsyncSession,
+        page_object: UsageCreateModel,
+        request_hash: str,
+        current_user: CurrentUserModel,
+        expected_site_id: int,
+    ) -> CrudResponseModel:
+        try:
+            site_ids = await cls._site_scope(query_db, current_user)
+            if site_ids is not None and expected_site_id not in site_ids:
+                cls._raise_pallet_not_accessible(current_user)
+            recovered = await OperationDao.get_usage_by_idempotency_key(
+                query_db,
+                page_object.idempotency_key,
+                site_ids=site_ids,
+            )
+            if recovered is None:
+                raise ServiceException(message='使用失败，数据冲突')
+            if recovered.site_id != expected_site_id or not cls._is_exact_idempotent_result(
+                recovered, page_object, request_hash
+            ):
+                raise ServiceException(message='使用失败，幂等键已被其他请求使用')
+            await cls._lock_and_reauthorize_usage_site(
+                query_db,
+                recovered.site_id,
+                current_user,
+            )
+            return cls._success(recovered.usage_id)
+        finally:
+            await query_db.rollback()
+
+    @classmethod
+    async def get_usage_list_services(
+        cls,
+        query_db: AsyncSession,
+        query_object: UsagePageQueryModel,
+        current_user: CurrentUserModel,
+        is_page: bool = True,
+    ) -> PageModel | list[UsageModel]:
+        site_ids = await cls._site_scope(query_db, current_user)
+        if site_ids is not None and query_object.site_id is not None and query_object.site_id not in site_ids:
+            raise PermissionException(data='', message='无权访问该客户现场')
+        if site_ids == []:
+            if is_page:
+                return PageModel(
+                    rows=[],
+                    pageNum=query_object.page_num,
+                    pageSize=query_object.page_size,
+                    total=0,
+                    hasNext=False,
+                )
+            return []
+        result = await OperationDao.get_usage_list(
+            query_db,
+            query_object,
+            is_page,
+            site_ids=site_ids,
+        )
+        rows = result.rows if isinstance(result, PageModel) else result
+        models = [UsageModel.model_validate(record) for record in rows]
+        if isinstance(result, PageModel):
+            return result.model_copy(update={'rows': models})
+        return models
+
+    @classmethod
+    async def usage_detail_services(
+        cls,
+        query_db: AsyncSession,
+        usage_id: int,
+        current_user: CurrentUserModel,
+    ) -> UsageModel:
+        site_ids = await cls._site_scope(query_db, current_user)
+        usage = await OperationDao.get_usage_by_id(
+            query_db,
+            usage_id,
+            site_ids=site_ids,
+        )
+        if usage is None:
+            cls._raise_usage_not_accessible(current_user)
+        return UsageModel.model_validate(usage)
+
+    @classmethod
+    async def get_line_options_services(
+        cls,
+        query_db: AsyncSession,
+        site_id: int,
+        current_user: CurrentUserModel,
+    ) -> list[BusinessOptionModel]:
+        cls._current_identity(current_user)
+        await AccessService.assert_site_access(query_db, current_user, site_id)
+        site = await MasterDao.get_site(query_db, site_id)
+        if site is None:
+            raise ServiceException(message='客户现场不存在')
+        if site.status != '0':
+            raise ServiceException(message='客户现场已停用')
+        lines = await MasterDao.list_line(
+            query_db,
+            LinePageQueryModel(siteId=site_id, status='0'),
+            False,
+        )
+        options = [
+            BusinessOptionModel(
+                id=cls._record_value(line, 'line_id'),
+                code=cls._record_value(line, 'line_code'),
+                name=cls._record_value(line, 'line_name'),
+            )
+            for line in lines
+            if cls._record_value(line, 'site_id') == site_id and cls._record_value(line, 'status') == '0'
+        ]
+        return sorted(options, key=lambda option: option.id)
+
+    @classmethod
+    async def scan_usage_pallet_services(
+        cls,
+        query_db: AsyncSession,
+        qr_token: str,
+        current_user: CurrentUserModel,
+    ) -> PalletScanResponseModel:
+        normalized_qr = qr_token.strip()
+        pallet = await InventoryDao.get_pallet_by_qr_token(query_db, normalized_qr)
+        if pallet is None:
+            cls._raise_pallet_not_accessible(current_user)
+        inventory = await MasterDao.get_pallet_inventory(query_db, pallet.pallet_id)
+        if inventory is None:
+            cls._raise_pallet_not_accessible(current_user, '托盘库存不存在')
+        if inventory.site_id is None:
+            cls._raise_pallet_not_accessible(current_user, '托盘不在客户现场')
+        await cls._assert_pallet_site_access(query_db, current_user, inventory.site_id)
+
+        if pallet.qr_token != normalized_qr or pallet.pallet_id != inventory.pallet_id:
+            raise ServiceException(message='托盘二维码与库存不一致')
+        if pallet.asset_status != '0':
+            raise ServiceException(message='托盘资产已停用，不允许使用')
+        if (
+            inventory.flow_state
+            not in {
+                PalletFlowState.AT_SITE_UNUSED.value,
+                PalletFlowState.AT_SITE_PARTIAL.value,
+            }
+            or inventory.warehouse_id is not None
+            or inventory.active_filling_id is None
+            or type(inventory.remaining_packages) is not int
+            or inventory.remaining_packages <= 0
+            or inventory.remaining_packages > pallet.capacity_packages
+        ):
+            raise ServiceException(message='托盘当前状态不允许使用')
+        filling = await OperationDao.get_filling_by_id(query_db, inventory.active_filling_id)
+        if filling is None:
+            raise ServiceException(message='托盘活动装填周期不存在')
+        if (
+            filling.filling_id != inventory.active_filling_id
+            or filling.pallet_id != pallet.pallet_id
+            or filling.active_slot != 'ACTIVE'
+            or filling.closed_at is not None
+        ):
+            raise ServiceException(message='托盘活动装填周期无效')
+        return PalletScanResponseModel(
+            pallet_id=pallet.pallet_id,
+            pallet_code=pallet.pallet_code,
+            flow_state=PalletFlowState(inventory.flow_state),
+            warehouse_id=None,
+            site_id=inventory.site_id,
+            current_line_id=inventory.current_line_id,
+            active_filling_id=inventory.active_filling_id,
+            strain_id=filling.strain_id,
+            strain_code=filling.strain_code_snapshot,
+            strain_name=filling.strain_name_snapshot,
+            batch_no=filling.batch_no,
+            package_spec=filling.package_spec,
+            capacity_packages=pallet.capacity_packages,
+            remaining_packages=inventory.remaining_packages,
+            allowed_actions=['usage'],
+        )
+
+    @classmethod
+    async def record_usage_services(  # noqa: PLR0912, PLR0915
+        cls,
+        query_db: AsyncSession,
+        page_object: UsageCreateModel,
+        current_user: CurrentUserModel,
+    ) -> CrudResponseModel:
+        expected_site_id: int | None = None
+        try:
+            request_hash = cls._build_request_hash(page_object)
+            user_id, user_name = cls._current_identity(current_user)
+            site_ids = await cls._site_scope(query_db, current_user)
+            existing = await OperationDao.get_usage_by_idempotency_key(
+                query_db,
+                page_object.idempotency_key,
+                site_ids=site_ids,
+            )
+            if existing is not None:
+                if not cls._is_exact_idempotent_result(existing, page_object, request_hash):
+                    raise ServiceException(message='使用失败，幂等键已被其他请求使用')
+                if site_ids is not None and existing.site_id not in site_ids:
+                    cls._raise_usage_not_accessible(current_user)
+                await cls._lock_and_reauthorize_usage_site(
+                    query_db,
+                    existing.site_id,
+                    current_user,
+                )
+                usage_id = existing.usage_id
+                await query_db.rollback()
+                return cls._success(usage_id)
+
+            scanned_pallet = await InventoryDao.get_pallet_by_qr_token(
+                query_db,
+                page_object.qr_token.strip(),
+            )
+            if scanned_pallet is None:
+                cls._raise_pallet_not_accessible(current_user)
+
+            inventory = await InventoryDao.get_inventory_for_update(
+                query_db,
+                scanned_pallet.pallet_id,
+            )
+            if inventory is None:
+                cls._raise_pallet_not_accessible(current_user, '托盘库存不存在')
+            if inventory.site_id is None:
+                cls._raise_pallet_not_accessible(current_user, '托盘不在客户现场')
+            expected_site_id = inventory.site_id
+            await cls._assert_pallet_site_access(query_db, current_user, inventory.site_id)
+
+            locked_pallets = await InventoryDao.get_pallets_by_ids(
+                query_db,
+                [inventory.pallet_id],
+            )
+            if len(locked_pallets) != 1 or locked_pallets[0].pallet_id != inventory.pallet_id:
+                cls._raise_pallet_not_accessible(current_user)
+            pallet = locked_pallets[0]
+
+            if inventory.active_filling_id is None:
+                raise ServiceException(message='托盘不存在活动装填周期')
+            filling = await OperationDao.get_active_filling_for_update(
+                query_db,
+                inventory.active_filling_id,
+            )
+            if filling is None:
+                raise ServiceException(message='托盘活动装填周期不存在或已关闭')
+
+            site = await MasterDao.get_site(query_db, inventory.site_id, for_update=True)
+            await cls._assert_pallet_site_access(
+                query_db,
+                current_user,
+                inventory.site_id,
+                for_update=True,
+            )
+            if site is None:
+                raise ServiceException(message='客户现场不存在')
+            if site.status != '0':
+                raise ServiceException(message='客户现场已停用')
+            line = await MasterDao.get_line(query_db, page_object.line_id, for_update=True)
+            if line is None:
+                raise ServiceException(message='产线不存在')
+            if line.status != '0':
+                raise ServiceException(message='产线已停用')
+            if line.site_id != inventory.site_id:
+                raise ServiceException(message='产线不属于托盘当前客户现场')
+
+            if pallet.pallet_id != inventory.pallet_id or pallet.qr_token != page_object.qr_token.strip():
+                raise ServiceException(message='托盘二维码与库存不一致')
+            if pallet.asset_status != '0':
+                raise ServiceException(message='托盘资产已停用，不允许使用')
+            if inventory.flow_state not in {
+                PalletFlowState.AT_SITE_UNUSED.value,
+                PalletFlowState.AT_SITE_PARTIAL.value,
+            }:
+                raise ServiceException(message='托盘当前状态不允许使用')
+            if inventory.warehouse_id is not None:
+                raise ServiceException(message='托盘当前位置无效')
+            if type(inventory.remaining_packages) is not int or inventory.remaining_packages <= 0:
+                raise ServiceException(message='托盘当前余量无效')
+            if inventory.remaining_packages > pallet.capacity_packages:
+                raise ServiceException(message='托盘当前余量超过容量')
+            if type(inventory.version) is not int or inventory.version < 0:
+                raise ServiceException(message='托盘库存版本无效')
+            if (
+                filling.filling_id != inventory.active_filling_id
+                or filling.pallet_id != pallet.pallet_id
+                or filling.active_slot != 'ACTIVE'
+                or filling.closed_at is not None
+            ):
+                raise ServiceException(message='托盘活动装填周期无效')
+            if inventory.current_line_id is not None and inventory.current_line_id != line.line_id:
+                raise ServiceException(message='托盘本次驻场周期已绑定其他产线')
+            if type(page_object.used_packages) is not int or page_object.used_packages <= 0:
+                raise ServiceException(message='使用包数必须为正整数')
+            if page_object.used_packages > inventory.remaining_packages:
+                raise ServiceException(message='使用包数不能超过当前余量')
+
+            remaining_after = inventory.remaining_packages - page_object.used_packages
+            target_state = PalletFlowState.AT_SITE_EMPTY if remaining_after == 0 else PalletFlowState.AT_SITE_PARTIAL
+            PalletStateMachine.ensure_transition(
+                PalletFlowState(inventory.flow_state),
+                target_state,
+            )
+
+            current_time = datetime.now()
+            usage = BizUsageRecord(
+                usage_no=f'US-{secrets.token_hex(16)}',
+                pallet_id=pallet.pallet_id,
+                active_filling_id=filling.filling_id,
+                site_id=inventory.site_id,
+                line_id=line.line_id,
+                used_packages=page_object.used_packages,
+                remaining_packages_after=remaining_after,
+                idempotency_key=page_object.idempotency_key,
+                request_hash=request_hash,
+                operator_id=user_id,
+                occurred_at=current_time,
+            )
+            usage = await OperationDao.add_usage_record(query_db, usage)
+            usage_id = usage.usage_id
+
+            before_state = inventory.flow_state
+            before_warehouse_id = inventory.warehouse_id
+            before_site_id = inventory.site_id
+            before_line_id = inventory.current_line_id
+            before_remaining_packages = inventory.remaining_packages
+            inventory.current_line_id = line.line_id
+            inventory.remaining_packages = remaining_after
+            inventory.flow_state = target_state.value
+            if target_state is PalletFlowState.AT_SITE_EMPTY:
+                filling.active_slot = None
+                filling.closed_at = current_time
+                filling.update_by = user_name
+                filling.update_time = current_time
+                await OperationDao.update_filling_record(query_db, filling)
+                inventory.active_filling_id = None
+            inventory.version += 1
+            inventory.updated_at = current_time
+            event = BizPalletEvent(
+                pallet_id=inventory.pallet_id,
+                event_type=PalletEventType.USAGE_RECORDED.value,
+                source_type='USAGE',
+                source_id=usage_id,
+                before_state=before_state,
+                after_state=target_state.value,
+                before_warehouse_id=before_warehouse_id,
+                before_site_id=before_site_id,
+                before_line_id=before_line_id,
+                after_warehouse_id=inventory.warehouse_id,
+                after_site_id=inventory.site_id,
+                after_line_id=inventory.current_line_id,
+                before_remaining_packages=before_remaining_packages,
+                after_remaining_packages=remaining_after,
+                operator_id=user_id,
+                occurred_at=current_time,
+                idempotency_key=page_object.idempotency_key,
+                request_hash=request_hash,
+            )
+            await InventoryDao.add_event(query_db, inventory, event)
+            await query_db.commit()
+            return cls._success(usage_id)
+        except IntegrityError:
+            await query_db.rollback()
+            if expected_site_id is None:
+                raise ServiceException(message='使用失败，数据冲突') from None
+            return await cls._recover_integrity_error(
+                query_db,
+                page_object,
+                request_hash,
+                current_user,
+                expected_site_id,
+            )
+        except Exception:
+            await query_db.rollback()
+            raise