verify whether currency code is in known list

pkg/exchangerates/euro_central_bank_datasource.go

@@ -8,6 +8,7 @@ import (
 	"github.com/mayswind/lab/pkg/errs"
 	"github.com/mayswind/lab/pkg/log"
 	"github.com/mayswind/lab/pkg/models"
+	"github.com/mayswind/lab/pkg/validators"
 )
 
 const euroCentralBankExchangeRateUrl = "https://www.ecb.europa.eu/stats/eurofxref/eurofxref-daily.xml"
@@ -59,6 +60,11 @@ func (e *EuroCentralBankExchangeRateData) ToLatestExchangeRateResponse(c *core.C
 
 	for i := 0; i < len(latestEuroCentralBankExchangeRate.ExchangeRates); i++ {
 		exchangeRate := latestEuroCentralBankExchangeRate.ExchangeRates[i]
+
+		if _, exists := validators.AllCurrencyNames[exchangeRate.Currency]; !exists {
+			continue
+		}
+
 		exchangeRates = append(exchangeRates, exchangeRate.ToLatestExchangeRate())
 	}
 

pkg/validators/currency.go

@@ -8,7 +8,7 @@ import (
 const ParentAccountCurrencyPlaceholder = "---"
 
 // ISO 4217
-var allCurrencyNames = map[string]bool{
+var AllCurrencyNames = map[string]bool{
 	"AED": true, //UAE Dirham
 	"AFN": true, //Afghani
 	"ALL": true, //Lek
@@ -175,7 +175,7 @@ func ValidCurrency(fl validator.FieldLevel) bool {
 			return true
 		}
 
-		_, ok := allCurrencyNames[value]
+		_, ok := AllCurrencyNames[value]
 		return ok
 	}