mtsd/backend/app/api/delivery.py

"""配送管理接口"""
from typing import Optional, List
from datetime import datetime
from decimal import Decimal
from fastapi import APIRouter, Depends, Query
from sqlalchemy.orm import Session
from sqlalchemy import and_, desc, func

from app.core.database import get_db
from app.core.auth import get_current_user
from app.core.response import success_response, error_response
from app.crud.region import region_crud
from app.crud.user import user_crud
from app.crud.order import order_crud, order_item_crud
from app.crud.product import product_crud
from app.crud.unit import unit_crud
from app.crud.address import address_crud
from app.core.order_status_compat import derive_legacy_status_from_three
from app.models.models import BizPriceListItem, SysRegion, SysUser, BizOrder, BizDeliveryTaskItem, BasAddress
from app.api.admin import _resolve_admin_payload_with_crypto_fallback

router = APIRouter(prefix="/web", tags=["运营端-配送管理"])


def _numeric_to_float_optional(v) -> Optional[float]:
    if v is None:
        return None
    return float(v)


def _category_path_display(db: Session, category_id: Optional[str]) -> str:
    """一级/二级分类用 / 连接（与订单详情一致）。"""
    from app.crud.category import category_crud

    if not category_id:
        return ""
    names: List[str] = []
    cid = str(category_id).strip()
    seen = set()
    depth = 0
    while cid and depth < 24 and cid not in seen:
        seen.add(cid)
        cat = category_crud.get(db, cid)
        if not cat:
            break
        names.insert(0, (getattr(cat, "name", None) or "").strip())
        pid = getattr(cat, "parent_id", None)
        cid = str(pid).strip() if pid else ""
        depth += 1
    return "/".join([n for n in names if n])


def _supplier_unit_yuan_from_pli(pli: Optional[BizPriceListItem]) -> Optional[float]:
    """价格清单行 price 为面向客户的最终单价；pricing_coefficient 为调价系数(%)，供货单价 = price / (1 + 系数/100)。"""
    if pli is None or getattr(pli, "price", None) is None:
        return None
    final_price = Decimal(str(pli.price))
    raw_coeff = getattr(pli, "pricing_coefficient", None)
    if raw_coeff is None:
        coeff_pct = Decimal("0")
    else:
        try:
            coeff_pct = Decimal(str(raw_coeff))
        except Exception:
            coeff_pct = Decimal("0")
    factor = Decimal("1") + coeff_pct / Decimal("100")
    if factor <= Decimal("0"):
        factor = Decimal("1")
    supplier_unit = (final_price / factor).quantize(Decimal("0.01"))
    return float(supplier_unit)


def _price_list_item_map(db: Session, price_list_ids: List[str]) -> dict:
    """(price_list_id, product_id, unit_id) -> BizPriceListItem"""
    if not price_list_ids:
        return {}
    rows = (
        db.query(BizPriceListItem)
        .filter(BizPriceListItem.price_list_id.in_(price_list_ids), BizPriceListItem.is_del == 0)
        .all()
    )
    return {(r.price_list_id, r.product_id, r.unit_id): r for r in rows}


def _supplier_pickup_address_block(db: Session, supplier_id: Optional[str]) -> dict:
    """供应商默认取货地址；无默认时取第一条 pickup 类型地址。"""
    empty = {"fullAddress": None, "contactPerson": None, "contactPhone": None}
    if not supplier_id:
        return empty
    addr = address_crud.get_default(db, supplier_id, "pickup")
    if not addr:
        rows = address_crud.get_by_user_and_type(db, supplier_id, "pickup")
        addr = rows[0] if rows else None
    if not addr:
        return empty
    segs = [
        getattr(addr, "province", None),
        getattr(addr, "city", None),
        getattr(addr, "district", None),
        getattr(addr, "detail_address", None),
    ]
    full = "".join(s for s in segs if s)
    return {
        "fullAddress": full or None,
        "contactPerson": addr.contact_person,
        "contactPhone": addr.contact_phone,
    }


def _batch_supplier_pickup_address_map(db: Session, supplier_ids: List[str]) -> dict:
    """批量获取供应商取货地址，避免列表接口逐条查询。"""
    if not supplier_ids:
        return {}
    rows = (
        db.query(BasAddress)
        .filter(
            BasAddress.user_id.in_(supplier_ids),
            BasAddress.address_type == "pickup",
            BasAddress.is_del == 0,
        )
        .order_by(BasAddress.user_id.asc(), BasAddress.is_default.desc(), BasAddress.create_at.desc(), BasAddress.id.desc())
        .all()
    )
    addr_map = {}
    for addr in rows:
        uid = str(getattr(addr, "user_id", "") or "")
        if not uid or uid in addr_map:
            continue
        segs = [
            getattr(addr, "province", None),
            getattr(addr, "city", None),
            getattr(addr, "district", None),
            getattr(addr, "detail_address", None),
        ]
        full = "".join(s for s in segs if s)
        addr_map[uid] = {
            "fullAddress": full or None,
            "contactPerson": getattr(addr, "contact_person", None),
            "contactPhone": getattr(addr, "contact_phone", None),
        }
    return addr_map


def require_admin(current_user: dict = Depends(get_current_user)):
    """验证运营人员权限"""
    if current_user.get("role") not in {"admin", "super_admin"}:
        return error_response(403, "需要运营人员权限")
    return current_user


# 配送任务状态映射
DELIVERY_STATUS_MAP = {
    "pending": "待取货",
    "assigned": "已分配",
    "picking": "取货中",
    "delivering": "配送中",
    "completed": "已完成",
    "cancelled": "已取消"
}


@router.get("/delivery-tasks", response_model=dict)
def list_delivery_tasks(
    page: int = Query(1, ge=1, description="页码"),
    pageSize: int = Query(10, ge=1, le=100, description="每页条数"),
    regionId: Optional[str] = Query(None, description="区域ID"),
    status: Optional[str] = Query(None, description="状态"),
    orderNo: Optional[str] = Query(None, description="订单号"),
    db: Session = Depends(get_db),
    current_user: dict = Depends(require_admin)
):
    """获取配送任务列表"""
    from app.crud.delivery import delivery_task_crud

    tasks, total = delivery_task_crud.get_multi_with_filters(
        db,
        region_id=regionId,
        status=status,
        order_no=orderNo,
        skip=(page - 1) * pageSize,
        limit=pageSize
    )

    region_map = {}
    supplier_map = {}
    deliver_map = {}
    client_map = {}

    task_ids = [t.id for t in tasks if getattr(t, "id", None)]
    region_ids = list({t.region_id for t in tasks if getattr(t, "region_id", None)})
    supplier_ids = list({t.supplier_id for t in tasks if getattr(t, "supplier_id", None)})
    deliver_ids = list({t.deliver_id for t in tasks if getattr(t, "deliver_id", None)})
    order_ids = list({t.order_id for t in tasks if getattr(t, "order_id", None)})

    # 批量加载区域
    if region_ids:
        regions = db.query(SysRegion).filter(SysRegion.id.in_(region_ids), SysRegion.is_del == 0).all()
        region_map = {r.id: r.name for r in regions}

    # 批量加载供应商/配送员
    user_ids = list({*supplier_ids, *deliver_ids})
    if user_ids:
        users = db.query(SysUser).filter(SysUser.id.in_(user_ids), SysUser.is_del == 0).all()
        user_map = {u.id: u for u in users}
        for sid in supplier_ids:
            u = user_map.get(sid)
            supplier_map[sid] = {"name": u.real_name if u else None, "phone": u.phone if u else None}
        for did in deliver_ids:
            u = user_map.get(did)
            deliver_map[did] = {"name": u.real_name if u else None, "phone": u.phone if u else None}

    # 批量加载订单与客户
    order_map = {}
    if order_ids:
        orders = db.query(BizOrder).filter(BizOrder.id.in_(order_ids), BizOrder.is_del == 0).all()
        order_map = {o.id: o for o in orders}
        client_ids = list({o.client_id for o in orders if getattr(o, "client_id", None)})
        if client_ids:
            clients = db.query(SysUser).filter(SysUser.id.in_(client_ids), SysUser.is_del == 0).all()
            client_map = {u.id: {"name": u.real_name if u else None, "phone": u.phone if u else None} for u in clients}

    # 批量聚合任务明细数量
    item_count_map = {}
    if task_ids:
        rows = (
            db.query(BizDeliveryTaskItem.task_id, func.count(BizDeliveryTaskItem.id))
            .filter(BizDeliveryTaskItem.task_id.in_(task_ids), BizDeliveryTaskItem.is_del == 0)
            .group_by(BizDeliveryTaskItem.task_id)
            .all()
        )
        item_count_map = {task_id: int(cnt or 0) for task_id, cnt in rows}

    # 批量供应商取货地址
    pickup_addr_map = _batch_supplier_pickup_address_map(db, supplier_ids)

    result = []
    for task in tasks:
        # 获取订单信息
        order_info = {}
        if task.order_id:
            order = order_map.get(task.order_id)
            if order:
                order_info = {
                    "orderNo": order.order_no,
                    "totalAmount": float(order.total_amount) if order.total_amount else 0,
                    "clientId": order.client_id,
                    "clientName": client_map.get(order.client_id, {}).get("name") if order.client_id else None,
                    "contactPerson": order.contact_person,
                    "contactPhone": order.contact_phone,
                    "deliveryAddress": order.delivery_address
                }

        item_count = item_count_map.get(task.id, 0)

        # 供应商取货地址（用于列表展示）
        supplier_pickup = pickup_addr_map.get(task.supplier_id, {"fullAddress": None, "contactPerson": None, "contactPhone": None})

        result.append({
            "id": task.id,
            "taskNo": task.task_no,
            "orderId": task.order_id,
            "orderNo": order_info.get("orderNo"),
            "regionId": task.region_id,
            "regionName": region_map.get(task.region_id),
            "supplierId": task.supplier_id,
            "supplierName": supplier_map.get(task.supplier_id, {}).get("name"),
            "supplierAddress": supplier_pickup.get("fullAddress"),
            "deliverId": task.deliver_id,
            "deliverName": deliver_map.get(task.deliver_id, {}).get("name"),
            "deliverPhone": deliver_map.get(task.deliver_id, {}).get("phone"),
            "status": task.status,
            "totalAmount": order_info.get("totalAmount"),
            "itemCount": item_count,
            "clientId": order_info.get("clientId"),
            "clientName": order_info.get("clientName"),
            "contactPerson": order_info.get("contactPerson"),
            "contactPhone": order_info.get("contactPhone"),
            "deliveryAddress": order_info.get("deliveryAddress"),
            "dispatchRemark": task.dispatch_remark,
            "createAt": str(task.create_at) if task.create_at else None,
            "assignTime": str(task.create_at) if task.deliver_id else None,
            "pickupTime": str(task.pickup_time) if task.pickup_time else None,
            "deliveryTime": str(task.delivery_time) if task.delivery_time else None,
            "expireTime": str(task.effective_time) if task.effective_time else None,
            "isExpiring": False
        })

    return success_response({
        "list": result,
        "total": total,
        "page": page,
        "pageSize": pageSize,
        "totalPages": (total + pageSize - 1) // pageSize
    })


@router.get("/delivery-tasks/{task_id}", response_model=dict)
def get_delivery_task(
    task_id: str,
    db: Session = Depends(get_db),
    current_user: dict = Depends(require_admin)
):
    """获取配送任务详情"""
    from app.crud.delivery import delivery_task_crud, delivery_task_item_crud

    task = delivery_task_crud.get(db, task_id)
    if not task:
        return error_response(404, "配送任务不存在")

    # 获取任务明细
    items = delivery_task_item_crud.get_by_task(db, task_id)

    # 获取关联信息
    region_name = None
    if task.region_id:
        region = region_crud.get(db, task.region_id)
        region_name = region.name if region else None

    supplier_info = {"name": None, "phone": None}
    if task.supplier_id:
        supplier = user_crud.get(db, task.supplier_id)
        if supplier:
            supplier_info = {"name": supplier.real_name, "phone": supplier.phone}

    deliver_info = {"name": None, "phone": None}
    if task.deliver_id:
        deliver = user_crud.get(db, task.deliver_id)
        if deliver:
            deliver_info = {"name": deliver.real_name, "phone": deliver.phone}

    # 获取订单信息
    order_info = {}
    order_price_list_id: Optional[str] = None
    if task.order_id:
        order = order_crud.get(db, task.order_id)
        if order:
            order_info = {
                "orderNo": order.order_no,
                "totalAmount": float(order.total_amount) if order.total_amount else 0,
                "contactPerson": order.contact_person,
                "contactPhone": order.contact_phone,
                "deliveryAddress": order.delivery_address
            }
            order_price_list_id = getattr(order, "price_list_id", None)

    pickup_addr = _supplier_pickup_address_block(db, task.supplier_id)

    # 处理任务明细（商品展示字段对齐运营端订单明细）
    item_details = []
    pli_map = _price_list_item_map(db, [order_price_list_id]) if order_price_list_id else {}
    for item in items:
        product = product_crud.get(db, item.product_id)
        order_line = order_item_crud.get(db, item.order_item_id) if item.order_item_id else None

        unit_row = None
        if order_line and order_line.unit_id:
            unit_row = unit_crud.get(db, order_line.unit_id)
        elif product and product.unit_id:
            unit_row = unit_crud.get(db, product.unit_id)

        image_url = getattr(product, "image_url", None) if product else None
        category_path = ""
        if product and getattr(product, "category_id", None):
            category_path = _category_path_display(db, str(product.category_id))
        measure_value = _numeric_to_float_optional(getattr(product, "measure_value", None)) if product else None

        qty = float(item.quantity) if item.quantity else 0.0
        unit_price = float(order_line.unit_price) if order_line and order_line.unit_price is not None else None
        amount = float(order_line.amount) if order_line and order_line.amount is not None else None
        if amount is None and unit_price is not None:
            amount = round(qty * float(unit_price), 2)

        client = user_crud.get(db, item.client_id) if item.client_id else None

        # 供货/售价字段：对齐「订单详情」逻辑：优先使用价格清单计算供货单价；无价格清单时兜底订单行售价
        selling_unit_price = unit_price
        selling_amount = amount
        unit_id_for_price = None
        if order_line and getattr(order_line, "unit_id", None):
            unit_id_for_price = order_line.unit_id
        elif product and getattr(product, "unit_id", None):
            unit_id_for_price = product.unit_id

        supplier_unit_price = None
        if order_price_list_id and item.product_id and unit_id_for_price:
            pli = pli_map.get((order_price_list_id, item.product_id, unit_id_for_price))
            supplier_unit_price = _supplier_unit_yuan_from_pli(pli)
        if supplier_unit_price is None:
            supplier_unit_price = unit_price
        supplier_amount = None
        if supplier_unit_price is not None:
            supplier_amount = round(qty * float(supplier_unit_price), 2)

        item_details.append({
            "id": item.id,
            "orderItemId": item.order_item_id,
            "productId": item.product_id,
            "productName": product.name if product else None,
            "imageUrl": image_url,
            "categoryName": category_path or None,
            "measureValue": measure_value,
            "unitName": unit_row.name if unit_row else None,
            "unitPrice": unit_price,
            "amount": amount,
            "sellingUnitPrice": selling_unit_price,
            "sellingAmount": selling_amount,
            "supplierId": task.supplier_id,
            "supplierName": supplier_info.get("name"),
            "supplierUnitPrice": supplier_unit_price,
            "supplierAmount": supplier_amount,
            "quantity": qty,
            "deliveredQuantity": float(item.delivered_quantity) if item.delivered_quantity else 0,
            "clientName": client.real_name if client else None,
            "clientPhone": client.phone if client else None,
            "clientAddress": item.delivery_address,
            "contactPerson": item.contact_person,
            "contactPhone": item.contact_phone,
            "deliveryAddress": item.delivery_address,
            "status": item.status
        })

    # 处理图片
    pickup_images = []
    if task.pickup_image_url:
        pickup_images = task.pickup_image_url.split(",")

    delivery_images = []
    if task.delivery_image_url:
        delivery_images = task.delivery_image_url.split(",")

    return success_response({
        "id": task.id,
        "taskNo": task.task_no,
        "orderId": task.order_id,
        "orderNo": order_info.get("orderNo"),
        "regionId": task.region_id,
        "regionName": region_name,
        "supplierId": task.supplier_id,
        "supplierName": supplier_info.get("name"),
        "supplierPhone": supplier_info.get("phone"),
        "supplierAddress": pickup_addr.get("fullAddress"),
        "supplierPickup": {
            "address": pickup_addr.get("fullAddress"),
            "contactPerson": pickup_addr.get("contactPerson"),
            "contactPhone": pickup_addr.get("contactPhone"),
        },
        "customerDelivery": {
            "address": order_info.get("deliveryAddress"),
            "contactPerson": order_info.get("contactPerson"),
            "contactPhone": order_info.get("contactPhone"),
        },
        "deliverId": task.deliver_id,
        "deliverName": deliver_info.get("name"),
        "deliverPhone": deliver_info.get("phone"),
        "status": task.status,
        "totalAmount": order_info.get("totalAmount"),
        "createAt": str(task.create_at) if task.create_at else None,
        "assignTime": str(task.create_at) if task.deliver_id else None,
        "pickupTime": str(task.pickup_time) if task.pickup_time else None,
        "pickupRemark": task.pickup_remark,
        "pickupImages": pickup_images,
        "deliveryTime": str(task.delivery_time) if task.delivery_time else None,
        "deliveryRemark": task.delivery_remark,
        "deliveryImages": delivery_images,
        "dispatchRemark": task.dispatch_remark,
        "items": item_details
    })


@router.post("/delivery-tasks/assign", response_model=dict)
def assign_delivery_task(
    request: dict,
    db: Session = Depends(get_db),
    current_user: dict = Depends(require_admin)
):
    """分配配送任务"""
    request, req_err = _resolve_admin_payload_with_crypto_fallback(request, current_user)
    if req_err is not None:
        return req_err
    from app.crud.delivery import delivery_task_crud
    from app.crud.order import order_crud

    order_id = request.get("orderId")
    deliver_id = request.get("deliverId")

    if not order_id:
        return error_response(400, "请选择订单")
    if not deliver_id:
        return error_response(400, "请选择配送员")

    # 验证配送员存在
    deliver = user_crud.get(db, deliver_id)
    if not deliver:
        return error_response(404, "配送员不存在")
    if deliver.role != "deliver":
        return error_response(400, "该用户不是配送员")

    task = delivery_task_crud.assign_deliver(
        db,
        order_id=order_id,
        deliver_id=deliver_id,
        operator_id=current_user.get("user_id")
    )

    if not task:
        return error_response(400, "分配失败，请检查订单状态")

    # 阶段D前收尾：分配配送优先维护 delivery_status
    order = order_crud.get(db, order_id)
    if order:
        order.delivery_status = "delivering"
        if order.order_status != "cancelled":
            order.order_status = "pending_confirm"
        order.status = derive_legacy_status_from_three(
            order_status=order.order_status,
            delivery_status=order.delivery_status,
            pay_status=order.pay_status,
        )
        order.update_at = datetime.now()
        db.commit()

    return success_response({
        "id": task.id,
        "status": task.status,
        "message": "分配成功"
    })


@router.post("/delivery-tasks/assign-batch", response_model=dict)
def assign_delivery_task_batch(
    request: dict,
    db: Session = Depends(get_db),
    current_user: dict = Depends(require_admin)
):
    """批量分配配送任务"""
    request, req_err = _resolve_admin_payload_with_crypto_fallback(request, current_user)
    if req_err is not None:
        return req_err
    from app.crud.delivery import delivery_task_crud
    from app.crud.order import order_crud

    assignments = request.get("assignments", [])

    if not assignments:
        return error_response(400, "请选择要分配的订单")

    results = []
    for assignment in assignments:
        order_id = assignment.get("orderId")
        deliver_id = assignment.get("deliverId")

        if order_id and deliver_id:
            task = delivery_task_crud.assign_deliver(
                db,
                order_id=order_id,
                deliver_id=deliver_id,
                operator_id=current_user.get("user_id")
            )
            if task:
                # 阶段D前收尾：分配配送优先维护 delivery_status
                order = order_crud.get(db, order_id)
                if order:
                    order.delivery_status = "delivering"
                    if order.order_status != "cancelled":
                        order.order_status = "pending_confirm"
                    order.status = derive_legacy_status_from_three(
                        order_status=order.order_status,
                        delivery_status=order.delivery_status,
                        pay_status=order.pay_status,
                    )
                    order.update_at = datetime.now()
                    db.commit()
                results.append({"orderId": order_id, "success": True})
            else:
                results.append({"orderId": order_id, "success": False, "reason": "分配失败"})

    success_count = sum(1 for r in results if r.get("success"))
    return success_response({
        "total": len(results),
        "success": success_count,
        "failed": len(results) - success_count,
        "results": results
    })


@router.get("/delivery-tasks/warnings", response_model=dict)
def list_delivery_warnings(
    page: int = Query(1, ge=1, description="页码"),
    pageSize: int = Query(10, ge=1, le=100, description="每页条数"),
    regionId: Optional[str] = Query(None, description="区域ID"),
    withinMinutes: int = Query(60, description="多少分钟内即将过期"),
    db: Session = Depends(get_db),
    current_user: dict = Depends(require_admin)
):
    """获取配送时效预警列表"""
    from app.crud.delivery import delivery_task_crud

    tasks, total, warning_count = delivery_task_crud.get_warning_tasks(
        db,
        region_id=regionId,
        within_minutes=withinMinutes,
        skip=(page - 1) * pageSize,
        limit=pageSize
    )

    region_map = {}
    deliver_map = {}

    result = []
    for task in tasks:
        if task.region_id and task.region_id not in region_map:
            region = region_crud.get(db, task.region_id)
            region_map[task.region_id] = region.name if region else None

        if task.deliver_id and task.deliver_id not in deliver_map:
            deliver = user_crud.get(db, task.deliver_id)
            deliver_map[task.deliver_id] = deliver.real_name if deliver else None

        order_info = {}
        if task.order_id:
            order = order_crud.get(db, task.order_id)
            if order:
                order_info = {"orderNo": order.order_no}

        # 计算剩余时间和预警级别
        remaining_minutes = 0
        warning_level = "normal"
        is_overdue = False

        if task.effective_time:
            now = datetime.now()
            remaining = task.effective_time - now
            remaining_minutes = int(remaining.total_seconds() / 60)

            if remaining_minutes < 0:
                is_overdue = True
                warning_level = "overdue"
            elif remaining_minutes <= 15:
                warning_level = "urgent"
            elif remaining_minutes <= 30:
                warning_level = "warning"

        result.append({
            "id": task.id,
            "taskNo": task.task_no,
            "orderId": task.order_id,
            "orderNo": order_info.get("orderNo"),
            "regionId": task.region_id,
            "regionName": region_map.get(task.region_id),
            "deliverId": task.deliver_id,
            "deliverName": deliver_map.get(task.deliver_id),
            "status": task.status,
            "expireTime": str(task.effective_time) if task.effective_time else None,
            "remainingMinutes": remaining_minutes,
            "isOverdue": is_overdue,
            "warningLevel": warning_level
        })

    return success_response({
        "list": result,
        "total": total,
        "warningCount": warning_count,
        "page": page,
        "pageSize": pageSize,
        "totalPages": (total + pageSize - 1) // pageSize
    })


@router.post("/delivery-tasks/{task_id}/cancel", response_model=dict)
def cancel_delivery_task(
    task_id: str,
    request: dict,
    db: Session = Depends(get_db),
    current_user: dict = Depends(require_admin)
):
    """取消配送任务"""
    request, req_err = _resolve_admin_payload_with_crypto_fallback(request, current_user)
    if req_err is not None:
        return req_err
    from app.crud.delivery import delivery_task_crud

    task = delivery_task_crud.get(db, task_id)
    if not task:
        return error_response(404, "配送任务不存在")

    reason = request.get("reason")

    task = delivery_task_crud.cancel_task(
        db,
        task_id=task_id,
        reason=reason,
        operator_id=current_user.get("user_id"),
        operator_real_name=current_user.get("real_name"),
    )

    if not task:
        return error_response(400, "当前状态不支持取消")

    return success_response({
        "id": task.id,
        "status": task.status,
        "message": "取消成功"
    })


@router.post("/delivery-tasks/{task_id}/reassign", response_model=dict)
def reassign_delivery_task(
    task_id: str,
    request: dict,
    db: Session = Depends(get_db),
    current_user: dict = Depends(require_admin)
):
    """重新分配配送任务"""
    request, req_err = _resolve_admin_payload_with_crypto_fallback(request, current_user)
    if req_err is not None:
        return req_err
    from app.crud.delivery import delivery_task_crud

    task = delivery_task_crud.get(db, task_id)
    if not task:
        return error_response(404, "配送任务不存在")

    new_deliver_id = request.get("deliverId")
    if not new_deliver_id:
        return error_response(400, "请选择新配送员")

    # 验证新配送员
    new_deliver = user_crud.get(db, new_deliver_id)
    if not new_deliver:
        return error_response(404, "配送员不存在")
    if new_deliver.role != "deliver":
        return error_response(400, "该用户不是配送员")

    task = delivery_task_crud.reassign(
        db,
        task_id=task_id,
        new_deliver_id=new_deliver_id,
        operator_id=current_user.get("user_id"),
        operator_real_name=current_user.get("real_name"),
    )

    if not task:
        return error_response(400, "当前状态不支持重新分配")

    return success_response({
        "id": task.id,
        "deliverId": task.deliver_id,
        "message": "重新分配成功"
    })


@router.get("/delivery-tasks/pending", response_model=dict)
def list_pending_delivery_tasks(
    page: int = Query(1, ge=1, description="页码"),
    pageSize: int = Query(10, ge=1, le=100, description="每页条数"),
    regionId: Optional[str] = Query(None, description="区域ID"),
    db: Session = Depends(get_db),
    current_user: dict = Depends(require_admin)
):
    """获取待分配的配送任务"""
    from app.crud.delivery import delivery_task_crud, delivery_task_item_crud

    tasks, total = delivery_task_crud.get_pending_list(
        db,
        region_id=regionId,
        skip=(page - 1) * pageSize,
        limit=pageSize
    )

    region_map = {}

    result = []
    for task in tasks:
        if task.region_id and task.region_id not in region_map:
            region = region_crud.get(db, task.region_id)
            region_map[task.region_id] = region.name if region else None

        order_info = {}
        if task.order_id:
            order = order_crud.get(db, task.order_id)
            if order:
                order_info = {
                    "orderNo": order.order_no,
                    "totalAmount": float(order.total_amount) if order.total_amount else 0,
                    "contactPerson": order.contact_person,
                    "contactPhone": order.contact_phone,
                    "deliveryAddress": order.delivery_address
                }

        items = delivery_task_item_crud.get_by_task(db, task.id)

        result.append({
            "id": task.id,
            "taskNo": task.task_no,
            "orderId": task.order_id,
            "orderNo": order_info.get("orderNo"),
            "regionId": task.region_id,
            "regionName": region_map.get(task.region_id),
            "status": task.status,
            "totalAmount": order_info.get("totalAmount"),
            "itemCount": len(items),
            "createAt": str(task.create_at) if task.create_at else None
        })

    return success_response({
        "list": result,
        "total": total,
        "page": page,
        "pageSize": pageSize,
        "totalPages": (total + pageSize - 1) // pageSize
    })