package utils

import (
	"os"
	"path/filepath"
	"strings"
)

// PathInfo 路径信息
type PathInfo struct {
	Dir          string // 目录
	Ext          string // 扩展名
	Filename     string // 没有扩展名的文件名名称
	FullFileName string // 文件全名
}

// PathForInfo 解析路径
// 返回文件，路径，文件名等信息
func PathForInfo(path string) (pi PathInfo) {
	if path == "" {
		return
	}
	ext := filepath.Ext(path)
	dir, name := filepath.Split(path)

	pi.Dir = dir
	pi.Ext = ext
	pi.Filename = strings.TrimRight(name, ext)
	pi.FullFileName = name
	return
}

func GetFileSize(filepath string) (int64, error) {
	fi, err := os.Stat(filepath)
	if err != nil {
		return 0, err
	}
	// get the size
	return fi.Size(), nil
}

// JoinUrlPath 域名与uri拼接
func JoinUrlPath(host string, uri string) (urlpath string) {
	switch {
	case strings.HasSuffix(host, "/") && strings.HasPrefix(uri, "/"):
		urlpath = host[0:len(host)-1] + uri
	case !strings.HasSuffix(host, "/") && !strings.HasPrefix(uri, "/"):
		urlpath = host + "/" + uri
	default:
		urlpath = host + uri
	}
	return
}