package models

import (
	"errors"
	"path"
)

func ParsePathComponents(pathStr string) (parentPath, nodeName string, nodeType VfsNodeType, err error) {
	// FIXME: 路径判断以及update的类型判断
	abspath := path.Clean(pathStr)
	if !path.IsAbs(abspath) {
		return "", "", 0, errors.New("path must be absolute")
	}

	// 特殊处理根路径
	if abspath == "/" {
		return "", "", VfsNodeTypeDirectory, nil
	}

	// 判断是文件还是目录
	nodeType = VfsNodeTypeFile
	// 如果原始路径以 / 结尾，则为目录
	if len(pathStr) > 1 && pathStr[len(pathStr)-1] == '/' {
		nodeType = VfsNodeTypeDirectory
	}
	if nodeType == VfsNodeTypeFile && path.Ext(pathStr) == ".api" {
		nodeType = VfsNodeTypeService
	}

	// 分割路径
	parentPath, nodeName = path.Split(abspath)

	// 清理父路径
	if parentPath != "/" && parentPath != "" {
		parentPath = path.Clean(parentPath)
	}

	// 处理特殊情况
	if parentPath == "." {
		parentPath = "/"
	}

	return parentPath, nodeName, nodeType, nil
}