// 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"
)

var (
	rePhoneCn *regexp.Regexp
	rePhone   *regexp.Regexp
)

func init() {
	// https://learnku.com/articles/31543
	rePhoneCn, _ = regexp.Compile(`^1(3\d|4[5-9]|5[0-35-9]|6[2567]|7[0-8]|8\d|9[0-35-9])\d{8}$`)
	rePhone, _ = regexp.Compile("(\\d{3})\\d*(\\d{4})")
}

func IsEmailValid(email string) bool {
	_, err := mail.ParseAddress(email)
	return err == nil
}

func IsPhoneCnValid(phone string) bool {
	return rePhoneCn.MatchString(phone)
}

func getMaskedPhone(phone string) string {
	return rePhone.ReplaceAllString(phone, "$1****$2")
}