"""商品单位Schema"""
from typing import Optional, List
from pydantic import BaseModel, Field


class UnitBase(BaseModel):
    """单位基础Schema"""
    name: str = Field(..., description="单位名称")
    code: str = Field(..., description="单位编码")
    is_active: bool = Field(True, description="是否启用")
    sort_order: int = Field(0, description="排序字段，数值越小越靠前")


class UnitCreate(UnitBase):
    """创建单位"""
    pass


class UnitUpdate(BaseModel):
    """更新单位"""
    name: Optional[str] = Field(None, description="单位名称")
    code: Optional[str] = Field(None, description="单位编码")
    is_active: Optional[bool] = Field(None, description="是否启用")
    sort_order: Optional[int] = Field(None, description="排序字段")


class UnitResponse(UnitBase):
    """单位响应"""
    id: str
    create_at: Optional[str] = None
    create_by: Optional[str] = None
    create_name: Optional[str] = None
    update_at: Optional[str] = None
    update_by: Optional[str] = None

    class Config:
        from_attributes = True


class UnitListResponse(BaseModel):
    """单位列表响应"""
    items: List[UnitResponse]
    total: int
    page: int
    pageSize: int
    totalPages: int