"""商品分类Schema"""
from typing import Optional, List
from pydantic import BaseModel, Field


class CategoryBase(BaseModel):
    """分类基础Schema"""
    name: str = Field(..., description="分类名称")
    image_url: Optional[str] = Field(None, description="分类图片URL")
    parent_id: Optional[str] = Field(None, description="父分类ID")
    sort_order: int = Field(0, description="排序")
    is_active: bool = Field(True, description="是否启用")


class CategoryCreate(CategoryBase):
    """创建分类"""
    pass


class CategoryUpdate(BaseModel):
    """更新分类"""
    name: Optional[str] = Field(None, description="分类名称")
    image_url: Optional[str] = Field(None, description="分类图片URL")
    parent_id: Optional[str] = Field(None, description="父分类ID")
    sort_order: Optional[int] = Field(None, description="排序")
    is_active: Optional[bool] = Field(None, description="是否启用")


class CategoryTreeNode(BaseModel):
    """分类树节点"""
    id: str
    name: str
    parentId: Optional[str] = None
    sortOrder: int = 0
    isActive: bool = True
    children: List["CategoryTreeNode"] = []

    class Config:
        from_attributes = True


class CategoryResponse(CategoryBase):
    """分类响应"""
    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 CategoryListResponse(BaseModel):
    """分类列表响应"""
    items: List[CategoryResponse]
    total: int
    page: int
    pageSize: int
    totalPages: int