"""产品 Pydantic Schemas"""
from __future__ import annotations
import uuid
from datetime import datetime
from pydantic import BaseModel, Field


class ProductCreate(BaseModel):
    """创建产品"""
    serial_number: str = Field(..., min_length=16, max_length=16, description="产品序列号(16位)")
    order_id: uuid.UUID = Field(..., description="所属订单ID")
    material_id: str | None = Field(None, max_length=64, description="物料ID(逻辑外键→老系统)")
    parent_product_id: uuid.UUID | None = Field(None, description="父产品ID")

    model_config = {"from_attributes": True}


class ProductUpdate(BaseModel):
    """更新产品"""
    serial_number: str | None = Field(None, min_length=16, max_length=16)
    material_id: str | None = Field(None, max_length=64)
    status: str | None = Field(None, max_length=50, description="产品状态")
    parent_product_id: uuid.UUID | None = Field(None)

    model_config = {"from_attributes": True}


class ProductResponse(BaseModel):
    """产品响应"""
    id: uuid.UUID
    serial_number: str
    order_id: uuid.UUID
    material_id: str | None
    parent_product_id: uuid.UUID | None
    current_location_id: str | None = None
    status: str
    created_at: datetime

    model_config = {"from_attributes": True}


class ProductScanResponse(BaseModel):
    """扫码查询响应 — 产品信息 + 完整任务树（递归嵌套）"""
    id: uuid.UUID
    serial_number: str
    order_id: uuid.UUID
    order_no: str = ""
    material_id: str | None
    parent_product_id: uuid.UUID | None
    current_location_id: str | None = None
    status: str
    created_at: datetime
    top_level_tasks: list[TaskSummaryResponse] = []
    task_tree: list[TaskResponse] = []

    model_config = {"from_attributes": True}


# 延迟导入，避免循环引用 — TaskSummaryResponse 在 tasks.py 中定义
from app.schemas.task import TaskSummaryResponse  # noqa: E402
ProductScanResponse.model_rebuild()