"""
文件系统操作相关的 Pydantic Schema
"""
from pydantic import BaseModel, Field
from typing import Optional, List


class FileTreeNode(BaseModel):
    """文件树节点 Schema"""
    title: str = Field(..., description="节点标题（文件/文件夹名）")
    key: str = Field(..., description="节点唯一键（相对路径）")
    isLeaf: bool = Field(..., description="是否叶子节点")
    children: Optional[List['FileTreeNode']] = Field(None, description="子节点")

    class Config:
        from_attributes = True


# 支持递归引用
FileTreeNode.model_rebuild()


class FileContentRequest(BaseModel):
    """文件内容请求 Schema"""
    path: str = Field(..., description="文件相对路径")


class FileSaveRequest(BaseModel):
    """文件保存请求 Schema"""
    path: str = Field(..., description="文件相对路径")
    content: str = Field(..., description="文件内容")


class FileOperateRequest(BaseModel):
    """文件操作请求 Schema"""
    action: str = Field(..., description="操作类型：rename|delete|create_dir|create_file")
    path: str = Field(..., description="当前路径")
    new_path: Optional[str] = Field(None, description="新路径（重命名时使用）")
    content: Optional[str] = Field(None, description="文件内容（创建文件时使用）")


class FileUploadResponse(BaseModel):
    """文件上传响应 Schema"""
    filename: str = Field(..., description="文件名")
    path: str = Field(..., description="文件相对路径")
    url: str = Field(..., description="文件访问URL")
    size: int = Field(..., description="文件大小（字节）")