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2018-04-18 12:01:51 +00:00
package utils
import (
"fmt"
"github.com/animenotifier/arn"
"github.com/pariz/gountries"
)
// Current currency rates
const (
yenToEuro = 0.0075
yenToDollar = 0.0093
)
var countryQuery = gountries.New()
// YenToUserCurrency converts the Yen price to the user currency.
func YenToUserCurrency(amount int, user *arn.User) string {
if user == nil || user.Location.CountryName == "" {
return fmt.Sprintf("%.2f $", float64(amount)*yenToDollar)
}
country, err := countryQuery.FindCountryByName(user.Location.CountryName)
if err != nil {
return fmt.Sprintf("%.2f $", float64(amount)*yenToDollar)
}
if arn.Contains(country.Currencies, "EUR") {
return fmt.Sprintf("%.2f €", float64(amount)*yenToEuro)
}
return fmt.Sprintf("%.2f $", float64(amount)*yenToDollar)
}