From 57420046457c945d5ab9531aa4113deddad91235 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=A1=D1=83=D1=85=D0=B0=D0=BD=D0=BE=D0=B2=20=D0=94=D0=B0?=
 =?UTF-8?q?=D0=BD=D0=B8=D0=BB=D0=B0?= <suhanov@retailcrm.ru>
Date: Thu, 6 Feb 2025 13:03:46 +0300
Subject: [PATCH] left-hand side currencies

---
 core/util/utils.go      | 15 +++++++++++++++
 core/util/utils_test.go | 14 ++++++++++++++
 2 files changed, 29 insertions(+)

diff --git a/core/util/utils.go b/core/util/utils.go
index 71bbac6..75eba2e 100644
--- a/core/util/utils.go
+++ b/core/util/utils.go
@@ -10,6 +10,7 @@ import (
 	"io"
 	"net/http"
 	"regexp"
+	"slices"
 	"strings"
 	"sync/atomic"
 	"time"
@@ -45,6 +46,8 @@ var (
 	}
 )
 
+var lHSCurrencies = []string{"pen"}
+
 var defaultCurrencies = map[string]string{
 	"rub": "₽",
 	"uah": "₴",
@@ -271,6 +274,11 @@ func DefaultCurrencies() map[string]string {
 	return defaultCurrencies
 }
 
+// LHSCurrencies will return left-hand side currencies.
+func LHSCurrencies() []string {
+	return lHSCurrencies
+}
+
 // GetCurrencySymbol returns currency symbol by it's ISO 4127 code.
 // It returns provided currency code in uppercase if currency symbol cannot be found.
 func GetCurrencySymbol(code string) string {
@@ -281,6 +289,13 @@ func GetCurrencySymbol(code string) string {
 	return strings.ToUpper(code)
 }
 
+// GetCurrencySymbolPosition returns currency symbol position.
+// true - left-hand side,
+// (default) false - right-hand side.
+func GetCurrencySymbolPosition(code string) bool {
+	return slices.Contains(LHSCurrencies(), strings.ToLower(code))
+}
+
 func FormatCurrencyValue(value float32) string {
 	return fmt.Sprintf("%.2f", value)
 }
diff --git a/core/util/utils_test.go b/core/util/utils_test.go
index cc041e9..e57c18d 100644
--- a/core/util/utils_test.go
+++ b/core/util/utils_test.go
@@ -4,6 +4,7 @@ import (
 	"encoding/json"
 	"errors"
 	"net/http"
+	"slices"
 	"strings"
 	"testing"
 	"time"
@@ -320,6 +321,19 @@ func TestUtils_GetCurrencySymbol(t *testing.T) {
 	assert.Equal(t, "MXN", GetCurrencySymbol("mxn"))
 }
 
+func TestUtils_GetCurrencySymbolPosition(t *testing.T) {
+	for code := range DefaultCurrencies() {
+		if slices.Contains(LHSCurrencies(), strings.ToLower(code)) {
+			assert.True(t, GetCurrencySymbolPosition(code))
+			continue
+		}
+
+		assert.False(t, GetCurrencySymbolPosition(code))
+	}
+
+	assert.False(t, GetCurrencySymbolPosition("extra_code"))
+}
+
 func TestUtils_ReplaceMarkdownSymbols(t *testing.T) {
 	test := "this *is* _test_ `string` [markdown"
 	expected := "this \\*is\\* \\_test\\_ \\`string\\` \\[markdown"