123 lines
2.8 KiB
JavaScript
123 lines
2.8 KiB
JavaScript
/**
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* 路由辅助工具
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* 用于简化 HTTP 路由处理
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*/
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import { URL } from 'url';
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/**
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* JSON 响应辅助函数
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*/
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export function jsonResponse(res, data, status = 200, origin = '*') {
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const headers = {
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'Content-Type': 'application/json',
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'Access-Control-Allow-Origin': origin,
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'Access-Control-Allow-Methods': 'GET, HEAD, POST, PUT, DELETE, OPTIONS',
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'Access-Control-Allow-Headers': 'Content-Type, Authorization',
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};
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res.writeHead(status, headers);
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res.end(JSON.stringify(data));
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}
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/**
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* 读取请求体
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*/
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export async function readBody(req) {
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return new Promise((resolve, reject) => {
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const chunks = [];
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req.on('data', chunk => chunks.push(chunk));
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req.on('end', () => resolve(Buffer.concat(chunks)));
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req.on('error', reject);
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});
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}
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/**
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* 解析 JSON 请求体
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*/
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export async function readJsonBody(req) {
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const body = await readBody(req);
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if (body.length === 0) return {};
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try {
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return JSON.parse(body.toString());
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} catch {
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throw new Error('Invalid JSON');
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}
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}
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/**
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* 解析 URL 路径参数
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* @param {string} pathname - 请求路径
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* @param {string} pattern - 路由模式，如 '/api/documents/:id'
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* @returns {Object|null} 解析出的参数或 null
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*/
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export function parsePathParams(pathname, pattern) {
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const patternParts = pattern.split('/');
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const pathnameParts = pathname.split('/');
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if (patternParts.length !== pathnameParts.length) {
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return null;
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}
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const params = {};
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for (let i = 0; i < patternParts.length; i++) {
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if (patternParts[i].startsWith(':')) {
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params[patternParts[i].slice(1)] = pathnameParts[i];
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} else if (patternParts[i] !== pathnameParts[i]) {
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return null;
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}
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}
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return params;
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}
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/**
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* 检查路径是否匹配
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* @param {string} pathname - 请求路径
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* @param {string} prefix - 路径前缀
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* @returns {boolean}
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*/
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export function pathStartsWith(pathname, prefix) {
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return pathname.startsWith(prefix);
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}
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/**
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* 获取路径剩余部分
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* @param {string} pathname - 请求路径
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* @param {string} prefix - 路径前缀
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* @returns {string}
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*/
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export function getPathRemainder(pathname, prefix) {
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return pathname.slice(prefix.length);
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}
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/**
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* 解析查询参数
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* @param {string} searchParams - URL 查询字符串
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* @returns {Object}
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*/
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export function parseQuery(searchParams) {
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const params = new URLSearchParams(searchParams);
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const result = {};
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for (const [key, value] of params) {
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result[key] = value;
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}
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return result;
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}
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/**
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* 验证 UUID 格式
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*/
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export function isValidUUID(id) {
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return /^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i.test(id);
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}
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/**
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* 生成 UUID
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*/
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export function generateUUID() {
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return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
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var r = Math.random() * 16 | 0, v = c == 'x' ? r : (r & 0x3 | 0x8);
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return v.toString(16);
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});
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} |