"""
通用响应模型
"""
from typing import Generic, TypeVar, List, Optional
from pydantic import BaseModel, Field

T = TypeVar("T")


class DeleteResponse(BaseModel):
    """删除成功响应"""
    success: bool = Field(default=True, description="操作是否成功")
    message: str = Field(description="响应消息")

    class Config:
        json_schema_extra = {
            "example": {
                "success": True,
                "message": "删除成功"
            }
        }


class PaginatedResponse(BaseModel, Generic[T]):
    """分页列表响应"""
    items: List[T] = Field(description="数据列表")
    total: int = Field(description="总记录数")
    skip: int = Field(description="跳过的记录数")
    limit: int = Field(description="返回的记录数")

    class Config:
        json_schema_extra = {
            "example": {
                "items": [],
                "total": 0,
                "skip": 0,
                "limit": 20
            }
        }