113 lines
3.1 KiB
JavaScript
113 lines
3.1 KiB
JavaScript
import { createReadStream } from 'node:fs';
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import { stat } from 'node:fs/promises';
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import http from 'node:http';
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import path from 'node:path';
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import { fileURLToPath } from 'node:url';
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const root = fileURLToPath(new URL('../apps/web-ele/dist', import.meta.url));
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const host = process.env.HOST || '127.0.0.1';
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const port = Number(process.env.PORT || 5777);
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const basePath = process.env.BASE_PATH || '/ai-agent-admin';
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const apiPrefix = `${basePath}/basic-api`;
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const rootApiPrefix = '/basic-api';
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const apiTarget =
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process.env.API_TARGET || 'http://124.220.21.25/zq-ai-admin/basic-api';
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const mime = {
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'.css': 'text/css; charset=utf-8',
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'.html': 'text/html; charset=utf-8',
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'.ico': 'image/x-icon',
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'.js': 'application/javascript; charset=utf-8',
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'.json': 'application/json; charset=utf-8',
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'.mjs': 'application/javascript; charset=utf-8',
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'.mp3': 'audio/mpeg',
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'.png': 'image/png',
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'.svg': 'image/svg+xml',
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};
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async function exists(filePath) {
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try {
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return (await stat(filePath)).isFile();
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} catch {
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return false;
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}
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}
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async function proxy(req, res) {
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const targetBase = apiTarget.replace(/\/$/, '');
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const apiPath = req.url.startsWith(apiPrefix)
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? req.url.replace(apiPrefix, '')
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: req.url.replace(rootApiPrefix, '');
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const target = new URL(`${targetBase}${apiPath}`);
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const headers = { ...req.headers };
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delete headers.host;
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let upstream;
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try {
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upstream = await fetch(target, {
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body: ['GET', 'HEAD'].includes(req.method) ? undefined : req,
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duplex: 'half',
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headers,
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method: req.method,
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});
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} catch (error) {
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res.writeHead(502, { 'Content-Type': 'text/plain; charset=utf-8' });
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res.end(`Proxy upstream unavailable: ${target}\n${error.message}`);
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return;
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}
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res.writeHead(upstream.status, Object.fromEntries(upstream.headers));
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if (upstream.body) {
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res.end(Buffer.from(await upstream.arrayBuffer()));
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} else {
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res.end();
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}
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}
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async function serve(req, res) {
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const url = new URL(req.url || '/', `http://${host}:${port}`);
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if (
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url.pathname.startsWith(apiPrefix) ||
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url.pathname.startsWith(rootApiPrefix)
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) {
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await proxy(req, res);
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return;
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}
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if (url.pathname === '/' || url.pathname === '') {
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res.writeHead(302, { Location: `${basePath}/` });
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res.end();
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return;
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}
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if (!url.pathname.startsWith(basePath)) {
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res.writeHead(404);
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res.end('Not Found');
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return;
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}
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let rel = url.pathname.slice(basePath.length) || '/index.html';
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if (rel === '/') rel = '/index.html';
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let filePath = path.join(root, rel);
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if (!(await exists(filePath))) {
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filePath = path.join(root, 'index.html');
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}
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const ext = path.extname(filePath);
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res.setHeader('Content-Type', mime[ext] || 'application/octet-stream');
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createReadStream(filePath).pipe(res);
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}
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const server = http.createServer((req, res) => {
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serve(req, res).catch((error) => {
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res.writeHead(500);
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res.end(error?.stack || String(error));
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});
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});
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server.listen(port, host, () => {
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console.log(`web-ele dist server: http://${host}:${port}${basePath}/`);
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console.log(`api proxy: ${apiPrefix} -> ${apiTarget}`);
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});
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