feat: add download functionality for board configuration files (#2111)

src/pages/api/download.ts

@@ -0,0 +1,34 @@
+import AdmZip from 'adm-zip';
+import fs from 'fs';
+import { NextApiRequest, NextApiResponse } from 'next';
+import { getServerAuthSession } from '~/server/auth';
+import { getFrontendConfig } from '~/tools/config/getFrontendConfig';
+
+const handler = async (req: NextApiRequest, res: NextApiResponse) => {
+  const session = await getServerAuthSession({ req, res });
+  if (!session) {
+    return res.status(401).end();
+  }
+
+  if (!session.user.isAdmin) {
+    return res.status(403).end();
+  }
+
+  const files = fs.readdirSync('./data/configs').filter((file) => file.endsWith('.json'));
+
+  const zip = new AdmZip();
+
+  for (const file of files) {
+    const data = await getFrontendConfig(file.replace('.json', ''));
+    const content = JSON.stringify(data, null, 2);
+    zip.addFile(file, Buffer.from(content, 'utf-8'));
+  }
+
+  const zipBuffer = zip.toBuffer();
+  res.setHeader('Content-Type', 'application/zip');
+  res.setHeader('Content-Disposition', 'attachment; filename=board-configs.zip');
+  res.setHeader('Content-Length', zipBuffer.length.toString());
+  res.status(200).end(zipBuffer);
+};
+
+export default handler;