Merge pull request #576 from InstaZDLL/feat/timestamp-pdf

feat: add Timestamp PDF tool with RFC 3161 support

vite.config.ts

@@ -1,5 +1,7 @@
 import { defineConfig, Plugin } from 'vitest/config';
 import type { IncomingMessage, ServerResponse } from 'http';
+import http from 'http';
+import https from 'https';
 import type { Connect } from 'vite';
 // import basicSsl from '@vitejs/plugin-basic-ssl';
 import tailwindcss from '@tailwindcss/vite';
@@ -198,13 +200,89 @@ function createLanguageMiddleware(isDev: boolean): Connect.NextHandleFunction {
   };
 }
 
+function createCorsProxyMiddleware(): Connect.NextHandleFunction {
+  return (
+    req: IncomingMessage,
+    res: ServerResponse,
+    next: Connect.NextFunction
+  ): void => {
+    if (!req.url?.startsWith('/cors-proxy')) return next();
+
+    if (req.method === 'OPTIONS') {
+      res.setHeader('Access-Control-Allow-Origin', req.headers.origin || '*');
+      res.setHeader('Access-Control-Allow-Methods', 'GET,POST,OPTIONS');
+      res.setHeader('Access-Control-Allow-Headers', 'Content-Type');
+      res.statusCode = 204;
+      res.end();
+      return;
+    }
+
+    const parsed = new URL(req.url, 'http://localhost');
+    const targetUrl = parsed.searchParams.get('url');
+    if (!targetUrl) {
+      res.statusCode = 400;
+      res.end('Missing url parameter');
+      return;
+    }
+
+    console.log(`[CORS Proxy] ${req.method} ${targetUrl}`);
+
+    const bodyChunks: Buffer[] = [];
+    req.on('data', (chunk: Buffer) => bodyChunks.push(chunk));
+    req.on('end', () => {
+      const body = Buffer.concat(bodyChunks);
+      const target = new URL(targetUrl);
+      const transport = target.protocol === 'https:' ? https : http;
+
+      const headers: Record<string, string> = {};
+      if (req.headers['content-type']) {
+        headers['Content-Type'] = req.headers['content-type'] as string;
+      }
+      if (body.length > 0) {
+        headers['Content-Length'] = String(body.length);
+      }
+
+      const proxyReq = transport.request(
+        targetUrl,
+        { method: req.method || 'GET', headers },
+        (proxyRes) => {
+          console.log(
+            `[CORS Proxy] Response: ${proxyRes.statusCode} from ${targetUrl}`
+          );
+          res.setHeader(
+            'Access-Control-Allow-Origin',
+            req.headers.origin || '*'
+          );
+          res.setHeader('Access-Control-Allow-Methods', 'GET,POST,OPTIONS');
+          res.setHeader('Access-Control-Allow-Headers', 'Content-Type');
+          res.statusCode = proxyRes.statusCode || 200;
+          proxyRes.pipe(res);
+        }
+      );
+
+      proxyReq.on('error', (err) => {
+        console.error('[CORS Proxy] Error:', err.message);
+        res.statusCode = 502;
+        res.end(`Proxy error: ${err.message}`);
+      });
+
+      if (body.length > 0) {
+        proxyReq.write(body);
+      }
+      proxyReq.end();
+    });
+  };
+}
+
 function languageRouterPlugin(): Plugin {
   return {
     name: 'language-router',
     configureServer(server) {
+      server.middlewares.use(createCorsProxyMiddleware());
       server.middlewares.use(createLanguageMiddleware(true));
     },
     configurePreviewServer(server) {
+      server.middlewares.use(createCorsProxyMiddleware());
       server.middlewares.use(createLanguageMiddleware(false));
     },
   };
@@ -310,7 +388,7 @@ export default defineConfig(() => {
         include: ['buffer', 'stream', 'util', 'zlib', 'process'],
         globals: {
           Buffer: true,
-          global: true,
+          global: false,
           process: true,
         },
       }),
@@ -557,6 +635,7 @@ export default defineConfig(() => {
             __dirname,
             'src/pages/digital-sign-pdf.html'
           ),
+          'timestamp-pdf': resolve(__dirname, 'src/pages/timestamp-pdf.html'),
           'validate-signature-pdf': resolve(
             __dirname,
             'src/pages/validate-signature-pdf.html'