146 lines
3.4 KiB
JavaScript
146 lines
3.4 KiB
JavaScript
/**
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* Password Generator - 密码生成器
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*/
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const { randomInt } = require('../../../shared/utils');
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class PasswordGenerator {
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constructor() {
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this.lowercase = 'abcdefghijklmnopqrstuvwxyz';
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this.uppercase = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
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this.numbers = '0123456789';
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this.special = '!@#$%^&*()_+-=[]{}|;:,.<>?';
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}
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/**
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* 生成密码
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* @param {Object} options - 选项
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* @returns {string}
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*/
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generate(options = {}) {
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const {
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length = 12,
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includeUppercase = true,
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includeLowercase = true,
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includeNumbers = true,
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includeSpecial = true,
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minUppercase = 1,
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minLowercase = 1,
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minNumbers = 1,
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minSpecial = 1
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} = options;
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let chars = '';
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let password = '';
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// 构建字符集
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if (includeLowercase) chars += this.lowercase;
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if (includeUppercase) chars += this.uppercase;
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if (includeNumbers) chars += this.numbers;
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if (includeSpecial) chars += this.special;
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if (chars.length === 0) {
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throw new Error('At least one character type must be included');
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}
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// 确保满足最小要求
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if (includeLowercase && minLowercase > 0) {
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for (let i = 0; i < minLowercase; i++) {
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password += this.lowercase.charAt(randomInt(0, this.lowercase.length - 1));
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}
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}
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if (includeUppercase && minUppercase > 0) {
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for (let i = 0; i < minUppercase; i++) {
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password += this.uppercase.charAt(randomInt(0, this.uppercase.length - 1));
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}
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}
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if (includeNumbers && minNumbers > 0) {
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for (let i = 0; i < minNumbers; i++) {
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password += this.numbers.charAt(randomInt(0, this.numbers.length - 1));
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}
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}
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if (includeSpecial && minSpecial > 0) {
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for (let i = 0; i < minSpecial; i++) {
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password += this.special.charAt(randomInt(0, this.special.length - 1));
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}
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}
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// 填充剩余长度
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while (password.length < length) {
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password += chars.charAt(randomInt(0, chars.length - 1));
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}
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// 打乱顺序
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password = this.shuffle(password);
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return password;
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}
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/**
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* 打乱字符串
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* @param {string} str - 字符串
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* @returns {string}
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*/
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shuffle(str) {
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const arr = str.split('');
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for (let i = arr.length - 1; i > 0; i--) {
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const j = randomInt(0, i);
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[arr[i], arr[j]] = [arr[j], arr[i]];
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}
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return arr.join('');
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}
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/**
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* 生成简单密码（只包含字母和数字）
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* @param {number} length - 长度
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* @returns {string}
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*/
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generateSimple(length = 12) {
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return this.generate({
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length,
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includeUppercase: true,
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includeLowercase: true,
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includeNumbers: true,
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includeSpecial: false
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});
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}
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/**
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* 生成强密码
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* @param {number} length - 长度
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* @returns {string}
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*/
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generateStrong(length = 16) {
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return this.generate({
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length,
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includeUppercase: true,
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includeLowercase: true,
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includeNumbers: true,
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includeSpecial: true,
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minUppercase: 2,
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minLowercase: 2,
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minNumbers: 2,
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minSpecial: 2
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});
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}
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/**
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* 批量生成
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* @param {number} count - 数量
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* @param {Object} options - 选项
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* @returns {Array}
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*/
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generateBatch(count, options = {}) {
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const passwords = [];
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for (let i = 0; i < count; i++) {
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passwords.push(this.generate(options));
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}
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return passwords;
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}
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}
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module.exports = PasswordGenerator;
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