package ngo

import "fmt"

// DataSize format bytes number friendly. eg: 1024 => 1KB, 1024*1024 => 1MB
//
// Usage:
//
//	file, err := os.Open(path)
//	fl, err := file.Stat()
//	fmtSize := DataSize(fl.Size())
func DataSize(size uint64) string {
	switch {
	case size < 1024:
		return fmt.Sprintf("%dB", size)
	case size < 1024*1024:
		return fmt.Sprintf("%.2fK", float64(size)/1024)
	case size < 1024*1024*1024:
		return fmt.Sprintf("%.2fM", float64(size)/1024/1024)
	default:
		return fmt.Sprintf("%.2fG", float64(size)/1024/1024/1024)
	}
}