/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 validate

import "unicode"

type PasswordChecker struct {
}

func (p *PasswordChecker) MatchString(s string) bool {
	var (
		hasMinLen  = false
		hasUpper   = false
		hasLower   = false
		hasNumber  = false
		hasSpecial = false
	)
	if len(s) >= 8 {
		hasMinLen = true
	}
	for _, char := range s {
		switch {
		case unicode.IsUpper(char):
			hasUpper = true
		case unicode.IsLower(char):
			hasLower = true
		case unicode.IsNumber(char):
			hasNumber = true
		case unicode.IsPunct(char) || unicode.IsSymbol(char):
			hasSpecial = true
		}
	}
	return hasMinLen && hasUpper && hasLower && hasNumber && hasSpecial
}
func (p *PasswordChecker) String() string {
	return "should len >= 8, contain upper && lower && number && special chars"
}