adding backup and data perstance accross devices

server/index.js

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+import express from 'express';
+import { fileURLToPath } from 'url';
+import { dirname, join } from 'path';
+import { initDb, getAllProjects, getProject, upsertProject, deleteProject } from './db.js';
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+const app = express();
+const PORT = process.env.PORT || 3001;
+
+app.use(express.json({ limit: '10mb' }));
+
+// ---------------------------------------------------------------------------
+// Health check
+// ---------------------------------------------------------------------------
+app.get('/api/health', (_req, res) => {
+  res.json({ ok: true });
+});
+
+// ---------------------------------------------------------------------------
+// GET /api/projects — list all project summaries (no full data)
+// ---------------------------------------------------------------------------
+app.get('/api/projects', (_req, res) => {
+  try {
+    const projects = getAllProjects();
+    res.json(projects);
+  } catch (err) {
+    console.error('GET /api/projects error:', err);
+    res.status(500).json({ error: 'Failed to list projects.' });
+  }
+});
+
+// ---------------------------------------------------------------------------
+// GET /api/projects/:id — fetch a single full project
+// ---------------------------------------------------------------------------
+app.get('/api/projects/:id', (req, res) => {
+  try {
+    const project = getProject(req.params.id);
+    if (!project) return res.status(404).json({ error: 'Project not found.' });
+    res.json(project);
+  } catch (err) {
+    console.error('GET /api/projects/:id error:', err);
+    res.status(500).json({ error: 'Failed to load project.' });
+  }
+});
+
+// ---------------------------------------------------------------------------
+// PUT /api/projects/:id — create or update a project
+// ---------------------------------------------------------------------------
+app.put('/api/projects/:id', (req, res) => {
+  try {
+    const body = req.body;
+    if (!body || typeof body !== 'object') {
+      return res.status(400).json({ error: 'Invalid JSON body.' });
+    }
+    if (!body.id || !body.title || !Array.isArray(body.chapters)) {
+      return res.status(400).json({ error: 'Missing required fields: id, title, chapters.' });
+    }
+    if (body.id !== req.params.id) {
+      return res.status(400).json({ error: 'URL id does not match body id.' });
+    }
+    const saved = upsertProject(body);
+    res.json(saved);
+  } catch (err) {
+    console.error('PUT /api/projects/:id error:', err);
+    res.status(500).json({ error: 'Failed to save project.' });
+  }
+});
+
+// ---------------------------------------------------------------------------
+// DELETE /api/projects/:id — remove a project
+// ---------------------------------------------------------------------------
+app.delete('/api/projects/:id', (req, res) => {
+  try {
+    deleteProject(req.params.id);
+    res.json({ ok: true });
+  } catch (err) {
+    console.error('DELETE /api/projects/:id error:', err);
+    res.status(500).json({ error: 'Failed to delete project.' });
+  }
+});
+
+// ---------------------------------------------------------------------------
+// Serve Vite production build (when NODE_ENV=production)
+// ---------------------------------------------------------------------------
+if (process.env.NODE_ENV === 'production') {
+  const distPath = join(__dirname, '..', 'dist');
+  app.use(express.static(distPath));
+  app.get('*', (_req, res) => {
+    res.sendFile(join(distPath, 'index.html'));
+  });
+}
+
+// ---------------------------------------------------------------------------
+// Start
+// ---------------------------------------------------------------------------
+initDb();
+app.listen(PORT, () => {
+  console.log(`Bible Study API running on http://localhost:${PORT}`);
+  if (process.env.NODE_ENV === 'production') {
+    console.log('Serving Vite build from /dist');
+  }
+});