"""库存管理 API"""
from typing import Optional
from fastapi import APIRouter, Depends, Query, HTTPException
from sqlalchemy.orm import Session

from app.core.database import get_db
from app.middleware.permission_middleware import require_permission
from app.schemas.inventory import (
    CategoryCreate, CategoryResponse,
    MaterialCreate, MaterialUpdate, MaterialListResponse,
    PurchaseInRequest, AllocateOutRequest, ReturnInRequest,
    TransactionListResponse, SerialDeviceListResponse,
    CheckCreate, CheckListResponse, InventorySummary,
)
import app.services.inventory_service as svc

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


# ── 物料分类 ──────────────────────────────────────────────────────────────────

@router.get("/categories")
def list_categories(
    db: Session = Depends(get_db),
    _: dict = Depends(require_permission("inventory.view")),
):
    return svc.get_categories(db)


@router.post("/categories", response_model=CategoryResponse)
def create_category(
    body: CategoryCreate,
    db: Session = Depends(get_db),
    _: dict = Depends(require_permission("inventory.manage")),
):
    return svc.create_category(db, body.name, body.code, body.description)


# ── 物料 ──────────────────────────────────────────────────────────────────────

@router.get("/materials", response_model=MaterialListResponse)
def list_materials(
    skip: int = Query(0, ge=0),
    limit: int = Query(20, ge=1, le=100),
    category_id: Optional[int] = None,
    keyword: Optional[str] = None,
    db: Session = Depends(get_db),
    _: dict = Depends(require_permission("inventory.view")),
):
    return svc.get_materials(db, skip, limit, category_id, keyword)


@router.post("/materials")
def create_material(
    body: MaterialCreate,
    db: Session = Depends(get_db),
    _: dict = Depends(require_permission("inventory.manage")),
):
    return svc.create_material(db, body.model_dump())


@router.put("/materials/{material_id}")
def update_material(
    material_id: int,
    body: MaterialUpdate,
    db: Session = Depends(get_db),
    _: dict = Depends(require_permission("inventory.manage")),
):
    return svc.update_material(db, material_id, body.model_dump(exclude_none=True))


@router.delete("/materials/{material_id}")
def delete_material(
    material_id: int,
    db: Session = Depends(get_db),
    _: dict = Depends(require_permission("inventory.manage")),
):
    svc.delete_material(db, material_id)
    return {"message": "删除成功"}


# ── 出入库操作 ────────────────────────────────────────────────────────────────

@router.post("/transactions/purchase")
def purchase_in(
    body: PurchaseInRequest,
    db: Session = Depends(get_db),
    current: dict = Depends(require_permission("inventory.transaction")),
):
    return svc.purchase_in(db, body.model_dump(), int(current.get("sub", 0)))


@router.post("/transactions/allocate")
def allocate_out(
    body: AllocateOutRequest,
    db: Session = Depends(get_db),
    current: dict = Depends(require_permission("inventory.transaction")),
):
    return svc.allocate_out(db, body.model_dump(), int(current.get("sub", 0)))


@router.post("/transactions/return")
def return_in(
    body: ReturnInRequest,
    db: Session = Depends(get_db),
    current: dict = Depends(require_permission("inventory.transaction")),
):
    return svc.return_in(db, body.serial_device_id, body.return_type, body.notes, int(current.get("sub", 0)))


@router.get("/transactions", response_model=TransactionListResponse)
def list_transactions(
    skip: int = Query(0, ge=0),
    limit: int = Query(20, ge=1, le=100),
    transaction_type: Optional[str] = None,
    material_id: Optional[int] = None,
    db: Session = Depends(get_db),
    _: dict = Depends(require_permission("inventory.view")),
):
    return svc.get_transactions(db, skip, limit, transaction_type, material_id)


@router.get("/transactions/{transaction_id}")
def get_transaction(
    transaction_id: int,
    db: Session = Depends(get_db),
    _: dict = Depends(require_permission("inventory.view")),
):
    return svc.get_transaction_detail(db, transaction_id)




@router.get("/batches")
def list_batches(
    material_id: int,
    db: Session = Depends(get_db),
    _: dict = Depends(require_permission("inventory.view")),
):
    return svc.get_batches_by_material(db, material_id)


# ── 序列号设备 ────────────────────────────────────────────────────────────────

@router.get("/serial-devices", response_model=SerialDeviceListResponse)
def list_serial_devices(
    skip: int = Query(0, ge=0),
    limit: int = Query(20, ge=1, le=100),
    material_id: Optional[int] = None,
    status: Optional[str] = None,
    keyword: Optional[str] = None,
    db: Session = Depends(get_db),
    _: dict = Depends(require_permission("inventory.view")),
):
    return svc.get_serial_devices(db, skip, limit, material_id, status, keyword)


# ── 库存统计 ──────────────────────────────────────────────────────────────────

@router.get("/summary", response_model=InventorySummary)
def get_summary(
    db: Session = Depends(get_db),
    _: dict = Depends(require_permission("inventory.view")),
):
    return svc.get_summary(db)


# ── 盘点 ──────────────────────────────────────────────────────────────────────

@router.get("/checks", response_model=CheckListResponse)
def list_checks(
    skip: int = Query(0, ge=0),
    limit: int = Query(20, ge=1, le=100),
    material_id: Optional[int] = None,
    db: Session = Depends(get_db),
    _: dict = Depends(require_permission("inventory.view")),
):
    return svc.get_checks(db, skip, limit, material_id)


@router.post("/checks")
def create_check(
    body: CheckCreate,
    db: Session = Depends(get_db),
    current: dict = Depends(require_permission("inventory.check")),
):
    return svc.create_check(db, body.model_dump(), int(current.get("sub", 0)))


@router.post("/checks/{check_id}/adjust")
def adjust_check(
    check_id: int,
    db: Session = Depends(get_db),
    current: dict = Depends(require_permission("inventory.check")),
):
    return svc.adjust_check(db, check_id, int(current.get("sub", 0)))