feat: support multiple country codes for sending SMS (#1557)

* feat: support multiple country code

* feat: improve UI

* feat: migrate accountItem

* fix: Aliyun compatible

* fix: phone validate

* fix: typo

util/validation.go

@@ -0,0 +1,50 @@
+// Copyright 2021 The Casdoor Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package util
+
+import (
+	"net/mail"
+	"regexp"
+
+	"github.com/nyaruka/phonenumbers"
+)
+
+var rePhone *regexp.Regexp
+
+func init() {
+	rePhone, _ = regexp.Compile("(\\d{3})\\d*(\\d{4})")
+}
+
+func IsEmailValid(email string) bool {
+	_, err := mail.ParseAddress(email)
+	return err == nil
+}
+
+func IsPhoneValid(phone string, countryCode string) bool {
+	phoneNumber, err := phonenumbers.Parse(phone, countryCode)
+	if err != nil {
+		return false
+	}
+	return phonenumbers.IsValidNumber(phoneNumber)
+}
+
+func IsPhoneAllowInRegin(countryCode string, allowRegions []string) bool {
+	return !ContainsString(allowRegions, countryCode)
+}
+
+func GetE164Number(phone string, countryCode string) (string, bool) {
+	phoneNumber, _ := phonenumbers.Parse(phone, countryCode)
+	return phonenumbers.Format(phoneNumber, phonenumbers.E164), phonenumbers.IsValidNumber(phoneNumber)
+}