first commit

server/index.js

@@ -0,0 +1,62 @@
+import express from 'express';
+import cors from 'cors';
+import { tmpdir } from 'os';
+import { join } from 'path';
+import { promises as fs } from 'fs';
+import { v4 as uuidV4 } from 'uuid';
+import Epub from 'epub-gen';
+
+const app = express();
+const PORT = process.env.PORT || 4000;
+const ORIGIN = process.env.CLIENT_ORIGIN || 'http://localhost:5173';
+
+app.use(cors({ origin: ORIGIN, credentials: true }));
+app.use(express.json({ limit: '10mb' }));
+
+const sanitizeHtml = (text = '') =>
+  text
+    .replace(/&/g, '&')
+    .replace(/</g, '&lt;')
+    .replace(/>/g, '&gt;')
+    .replace(/"/g, '&quot;')
+    .replace(/'/g, '&#39;')
+    .replace(/\n/g, '<br/>');
+
+app.post('/generate-epub', async (req, res) => {
+  const { text, meta } = req.body || {};
+  if (!text || !text.trim()) {
+    return res.status(400).json({ message: 'text is required' });
+  }
+
+  const title = meta?.title || 'imgPub OCR Export';
+  const author = meta?.author || 'imgPub';
+  const filename = meta?.filename || `imgpub${Date.now()}.epub`;
+
+  const content = [
+    {
+      title,
+      data: `<div>${sanitizeHtml(text)}</div>`,
+    },
+  ];
+
+  const outputPath = join(tmpdir(), `imgpub-${uuidV4()}.epub`);
+
+  try {
+    const epub = new Epub({ title, author, content }, outputPath);
+    await epub.promise;
+    const buffer = await fs.readFile(outputPath);
+    await fs.unlink(outputPath).catch(() => {});
+    res.json({ filename, data: buffer.toString('base64') });
+  } catch (error) {
+    console.error('EPUB generation failed:', error);
+    res.status(500).json({ message: 'EPUB generation failed' });
+  }
+});
+
+app.get('/', (_, res) => {
+  res.json({ status: 'ok' });
+});
+
+app.listen(PORT, () => {
+  console.log(`imgPub EPUB server listening on port ${PORT}`);
+});