package nofxos

import "fmt"

// Language represents the language for formatting output
type Language string

const (
	LangChinese Language = "zh-CN"
	LangEnglish Language = "en-US"
)

// formatValue formats a numeric value with sign and appropriate suffix
func formatValue(v float64) string {
	sign := "+"
	if v < 0 {
		sign = ""
	}
	absV := v
	if absV < 0 {
		absV = -absV
	}
	if absV >= 1e9 {
		return fmt.Sprintf("%s%.2fB", sign, v/1e9)
	} else if absV >= 1e6 {
		return fmt.Sprintf("%s%.2fM", sign, v/1e6)
	} else if absV >= 1e3 {
		return fmt.Sprintf("%s%.2fK", sign, v/1e3)
	}
	return fmt.Sprintf("%s%.2f", sign, v)
}