Files
auto-virtual-tryon/app/application/services/order_service.py

218 lines
8.5 KiB
Python

"""Order application service."""
from fastapi import HTTPException, status
from math import ceil
from sqlalchemy import String, cast, func, or_, select
from sqlalchemy.orm import selectinload
from app.api.schemas.asset import AssetRead
from app.api.schemas.order import (
CreateOrderRequest,
CreateOrderResponse,
OrderDetailResponse,
OrderListItemResponse,
OrderListResponse,
)
from app.application.services.revision_service import RevisionService
from app.application.services.workflow_service import WorkflowService
from app.domain.enums import CustomerLevel, OrderStatus, ServiceMode
from app.infra.db.models.order import OrderORM
from app.infra.db.models.workflow_run import WorkflowRunORM
from app.workers.workflows.types import PipelineWorkflowInput
class OrderService:
"""Application service for order management."""
def __init__(self) -> None:
self.workflow_service = WorkflowService()
self.revision_service = RevisionService()
async def create_order(self, session, payload: CreateOrderRequest) -> CreateOrderResponse:
"""Create an order, persist a workflow run, and start Temporal execution."""
self._validate_mode(payload.customer_level, payload.service_mode)
order = OrderORM(
customer_level=payload.customer_level,
service_mode=payload.service_mode,
status=OrderStatus.CREATED,
model_id=payload.model_id,
pose_id=payload.pose_id,
garment_asset_id=payload.garment_asset_id,
scene_ref_asset_id=payload.scene_ref_asset_id,
)
session.add(order)
await session.flush()
workflow_id = f"order-{order.id}"
workflow_run = WorkflowRunORM(
order_id=order.id,
workflow_id=workflow_id,
workflow_type=self.workflow_service.workflow_type_for_mode(payload.service_mode),
status=OrderStatus.CREATED,
)
session.add(workflow_run)
await session.commit()
workflow_input = PipelineWorkflowInput(
order_id=order.id,
workflow_run_id=workflow_run.id,
customer_level=order.customer_level,
service_mode=order.service_mode,
model_id=order.model_id,
pose_id=order.pose_id,
garment_asset_id=order.garment_asset_id,
scene_ref_asset_id=order.scene_ref_asset_id,
)
try:
await self.workflow_service.start_workflow(workflow_input)
except Exception as exc:
order.status = OrderStatus.FAILED
workflow_run.status = OrderStatus.FAILED
await session.commit()
raise HTTPException(
status_code=status.HTTP_503_SERVICE_UNAVAILABLE,
detail=f"Failed to start Temporal workflow: {exc}",
) from exc
return CreateOrderResponse(order_id=order.id, workflow_id=workflow_id, status=order.status)
async def get_order(self, session, order_id: int) -> OrderDetailResponse:
"""Return a single order with workflow context and final asset."""
result = await session.execute(
select(OrderORM)
.where(OrderORM.id == order_id)
.options(
selectinload(OrderORM.assets),
selectinload(OrderORM.workflow_runs),
)
)
order = result.scalar_one_or_none()
if order is None:
raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Order not found")
workflow_run = order.workflow_runs[0] if order.workflow_runs else None
final_asset = next((asset for asset in order.assets if asset.id == order.final_asset_id), None)
snapshot = await self.revision_service.get_revision_snapshot(session, order_id)
return OrderDetailResponse(
order_id=order.id,
customer_level=order.customer_level,
service_mode=order.service_mode,
status=order.status,
model_id=order.model_id,
pose_id=order.pose_id,
garment_asset_id=order.garment_asset_id,
scene_ref_asset_id=order.scene_ref_asset_id,
final_asset_id=order.final_asset_id,
workflow_id=workflow_run.workflow_id if workflow_run else None,
current_step=workflow_run.current_step if workflow_run else None,
current_revision_asset_id=snapshot.current_revision_asset_id,
current_revision_version=snapshot.current_revision_version,
latest_revision_asset_id=snapshot.latest_revision_asset_id,
latest_revision_version=snapshot.latest_revision_version,
revision_count=snapshot.revision_count,
review_task_status=snapshot.review_task_status,
pending_manual_confirm=snapshot.pending_manual_confirm,
final_asset=AssetRead.model_validate(final_asset) if final_asset else None,
created_at=order.created_at,
updated_at=order.updated_at,
)
async def list_orders(
self,
session,
*,
page: int = 1,
limit: int = 20,
query: str | None = None,
status_filter: OrderStatus | None = None,
order_id: int | None = None,
) -> OrderListResponse:
"""Return recent orders for dashboard overview pages."""
filters = []
if status_filter is not None:
filters.append(OrderORM.status == status_filter)
if order_id is not None:
filters.append(OrderORM.id == order_id)
if query:
search_term = query.strip()
if search_term:
filters.append(
or_(
cast(OrderORM.id, String).ilike(f"{search_term}%"),
OrderORM.workflow_runs.any(
WorkflowRunORM.workflow_id.ilike(f"%{search_term}%")
),
)
)
query = select(OrderORM).options(selectinload(OrderORM.workflow_runs))
count_query = select(func.count()).select_from(OrderORM)
if filters:
query = query.where(*filters)
count_query = count_query.where(*filters)
total = (await session.execute(count_query)).scalar_one()
total_pages = ceil(total / limit) if total else 0
offset = (page - 1) * limit
query = query.order_by(OrderORM.updated_at.desc(), OrderORM.id.desc()).offset(offset).limit(limit)
result = await session.execute(query)
orders = result.scalars().all()
items = []
for order in orders:
workflow_run = order.workflow_runs[0] if order.workflow_runs else None
snapshot = await self.revision_service.get_revision_snapshot(session, order.id)
items.append(
OrderListItemResponse(
order_id=order.id,
workflow_id=workflow_run.workflow_id if workflow_run else None,
customer_level=order.customer_level,
service_mode=order.service_mode,
status=order.status,
current_step=workflow_run.current_step if workflow_run else None,
updated_at=order.updated_at,
final_asset_id=order.final_asset_id,
review_task_status=snapshot.review_task_status,
latest_revision_asset_id=snapshot.latest_revision_asset_id,
latest_revision_version=snapshot.latest_revision_version,
revision_count=snapshot.revision_count,
pending_manual_confirm=snapshot.pending_manual_confirm,
)
)
return OrderListResponse(
page=page,
limit=limit,
total=total,
total_pages=total_pages,
items=items,
)
@staticmethod
def _validate_mode(customer_level: CustomerLevel, service_mode: ServiceMode) -> None:
"""Validate the allowed customer-level and service-mode combinations."""
if customer_level == CustomerLevel.LOW and service_mode != ServiceMode.AUTO_BASIC:
raise HTTPException(
status_code=status.HTTP_400_BAD_REQUEST,
detail="Low-level customers only support auto_basic",
)
if customer_level == CustomerLevel.MID and service_mode != ServiceMode.SEMI_PRO:
raise HTTPException(
status_code=status.HTTP_400_BAD_REQUEST,
detail="Mid-level customers only support semi_pro",
)