package utils

import (
	"regexp"
	"strings"
)

// ValidateEmail 验证邮箱
func ValidateEmail(email string) bool {
	pattern := `^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$`
	matched, _ := regexp.MatchString(pattern, email)
	return matched
}

// ValidateUsername 验证用户名
func ValidateUsername(username string) bool {
	if len(username) < 3 || len(username) > 30 {
		return false
	}
	pattern := `^[a-zA-Z0-9_]+$`
	matched, _ := regexp.MatchString(pattern, username)
	return matched
}

// ValidatePassword 验证密码强度
func ValidatePassword(password string) bool {
	if len(password) < 6 || len(password) > 50 {
		return false
	}
	return true
}

// ValidatePhone 验证手机号
func ValidatePhone(phone string) bool {
	pattern := `^1[3-9]\d{9}$`
	matched, _ := regexp.MatchString(pattern, phone)
	return matched
}

// SanitizeHTML 清理HTML
func SanitizeHTML(input string) string {
	// 简单实现，实际使用建议用专门库
	input = strings.ReplaceAll(input, "<", "<")
	input = strings.ReplaceAll(input, ">", ">")
	return input
}