"""库存管理路由层 - 薄路由

业务逻辑下沉至 inventory.services.inventory_service，路由只做参数校验与响应组装。
路由前缀: /api/inventory
"""
from fastapi import APIRouter, Depends, Query
from sqlalchemy.ext.asyncio import AsyncSession
from typing import Optional

from shared.database.database import get_db_session
from shared.services.auth_service import get_current_active_user
from shared.models.identity import User
from ..schemas import InventoryResponse, InventoryCreate, InventoryUpdate, PaginatedResponse
from ..services.inventory_service import inventory_service

router = APIRouter(prefix="/inventory", tags=["库存管理"])


@router.get("", response_model=PaginatedResponse[InventoryResponse])
async def list_inventory(
    warehouse_id: Optional[int] = None,
    product_id: Optional[int] = None,
    low_stock: bool = False,
    skip: int = Query(0, ge=0),
    limit: int = Query(20, ge=1, le=100),
    db_session: AsyncSession = Depends(get_db_session),
    current_user: User = Depends(get_current_active_user)
):
    return await inventory_service.list_inventory(db_session, warehouse_id, product_id, low_stock, skip, limit)


@router.post("", response_model=InventoryResponse, status_code=201)
async def create_inventory(
    payload: InventoryCreate,
    db_session: AsyncSession = Depends(get_db_session),
    current_user: User = Depends(get_current_active_user)
):
    return await inventory_service.create_inventory(db_session, payload, current_user)


@router.put("/{inventory_id}", response_model=InventoryResponse)
async def update_inventory(
    inventory_id: int,
    payload: InventoryUpdate,
    db_session: AsyncSession = Depends(get_db_session),
    current_user: User = Depends(get_current_active_user)
):
    return await inventory_service.update_inventory(db_session, inventory_id, payload, current_user)


@router.delete("/{inventory_id}")
async def delete_inventory(
    inventory_id: int,
    db_session: AsyncSession = Depends(get_db_session),
    current_user: User = Depends(get_current_active_user)
):
    return await inventory_service.delete_inventory(db_session, inventory_id, current_user)