Configure Space: add filesystem JSON database catalog endpoints

server.js

@@ -2,6 +2,8 @@ import express from 'express';
 import cors from 'cors';
 import dotenv from 'dotenv';
 import { HfInference } from '@huggingface/inference';
+import fs from 'fs';
+import path from 'path';
 
 // Load environment variables
 dotenv.config();
@@ -13,14 +15,96 @@ const PORT = process.env.PORT || 5000;
 app.use(cors());
 app.use(express.json());
 
+// JSON File Database Configuration
+const DB_FILE = path.join(process.cwd(), 'db.json');
+
+const readDb = () => {
+  try {
+    if (!fs.existsSync(DB_FILE)) {
+      const defaultCatalog = [
+        {
+          id: '1',
+          title: 'ADHD Daily Focus Study Planner 2026',
+          subtitle: 'The Ultimate Aesthetic Organization Notebook for Neurodivergent College Students',
+          type: 'planner',
+          price: 9.99,
+          date: new Date().toLocaleDateString()
+        },
+        {
+          id: '2',
+          title: 'AWS Certified Solutions Architect Study Guide SAA-C03',
+          subtitle: 'The 30-Day Cram Sheet & High-Performance Practice Exam Bank',
+          type: 'study_guide',
+          price: 14.99,
+          date: new Date().toLocaleDateString()
+        }
+      ];
+      fs.writeFileSync(DB_FILE, JSON.stringify(defaultCatalog, null, 2));
+      return defaultCatalog;
+    }
+    return JSON.parse(fs.readFileSync(DB_FILE, 'utf8'));
+  } catch (err) {
+    return [];
+  }
+};
+
+const writeDb = (data) => {
+  fs.writeFileSync(DB_FILE, JSON.stringify(data, null, 2));
+};
+
 // Initialize Hugging Face Inference using the free serverless Token
 const hf = new HfInference(process.env.HF_API_KEY || '');
 
 // Health Check Endpoint
 app.get('/api/health', (req, res) => {
-  res.json({ status: 'ok', hfConfigured: !!process.env.HF_API_KEY });
+  res.json({ status: 'ok', hfConfigured: !!process.env.HF_API_KEY, dbConnected: true });
 });
 
+// ----------------------------------------------------
+// DATABASE CATALOG ENDPOINTS ("AI DB")
+// ----------------------------------------------------
+
+app.get('/api/catalog', (req, res) => {
+  const catalog = readDb();
+  res.json(catalog);
+});
+
+app.post('/api/catalog', (req, res) => {
+  const { title, subtitle, type, price } = req.body;
+  if (!title) {
+    return res.status(400).json({ error: 'Book title is required' });
+  }
+
+  const catalog = readDb();
+  const newBook = {
+    id: Date.now().toString(),
+    title,
+    subtitle: subtitle || '',
+    type: type || 'other',
+    price: price || 9.99,
+    date: new Date().toLocaleDateString()
+  };
+
+  catalog.unshift(newBook);
+  writeDb(catalog);
+  res.status(201).json(newBook);
+});
+
+app.delete('/api/catalog/:id', (req, res) => {
+  const { id } = req.params;
+  let catalog = readDb();
+  const originalLength = catalog.length;
+  catalog = catalog.filter(book => book.id !== id);
+  
+  if (catalog.length === originalLength) {
+    return res.status(404).json({ error: 'Book not found' });
+  }
+  
+  writeDb(catalog);
+  res.json({ success: true });
+});
+
+
 // 1. FREE TEXT GENERATION API (Uses Meta Llama 3)
 app.post('/api/generate-text', async (req, res) => {
   const { prompt, maxTokens = 800 } = req.body;