package util

import (
    "fmt"
)

func FormatFilesize(bytes int64) string {
    var unit string
    var value float64
    if bytes > 1024*1024*1024*1024 {
        unit = "TiB"
        value = float64(bytes) / (1024*1024*1024*1024)
    } else if bytes > 1024*1024*1024 {
        unit = "GiB"
        value = float64(bytes) / (1024*1024*1024)
    } else if bytes > 1024*1024 {
        unit = "MiB"
        value = float64(bytes) / (1024*1024)
    } else if bytes > 1024 {
        unit = "KiB"
        value = float64(bytes) / (1024)
    } else {
        unit = "B"
        value = float64(bytes)
    }
    return fmt.Sprintf("%.1f %s", value, unit)
}

func FormatFilesize2(bytes int64) string {
	if bytes == 0 { // this is what gorm returns for NULL
		return "Unknown"
	} else {
		return FormatFilesize(bytes)
	}
}