feat: move API keys storage to Postgres database instead of localStorage

backend/database.js

@@ -25,7 +25,8 @@ const initDB = async () => {
         role TEXT DEFAULT 'user',
         api_credits INTEGER DEFAULT 10,
         storage_limit_mb INTEGER DEFAULT 500,
-        is_active BOOLEAN DEFAULT false
+        is_active BOOLEAN DEFAULT false,
+        api_keys TEXT
       )
     `);
     
@@ -36,6 +37,12 @@ const initDB = async () => {
     } catch (err) {
       // Ignore if it already exists
     }
+    
+    try {
+      await client.query(`ALTER TABLE profiles ADD COLUMN api_keys TEXT`);
+    } catch (err) {
+      // Ignore if it already exists
+    }
 
     await client.query(`
       CREATE TABLE IF NOT EXISTS projects (

backend/server.js

@@ -116,6 +116,40 @@ app.get('/api/auth/me', authenticate, async (req, res) => {
   }
 });
 
+// 3.5. Get User API Keys
+app.get('/api/user/keys', authenticate, async (req, res) => {
+  try {
+    const profile = await get('SELECT api_keys FROM profiles WHERE id = ?', [req.user.id]);
+    let keys = {};
+    if (profile && profile.api_keys) {
+      try {
+        keys = JSON.parse(profile.api_keys);
+      } catch (e) {
+        // ignore invalid json
+      }
+    }
+    res.json({ keys });
+  } catch (err) {
+    res.status(500).json({ error: err.message });
+  }
+});
+
+// 3.6. Update User API Keys
+app.put('/api/user/keys', authenticate, async (req, res) => {
+  const { keys } = req.body;
+  if (!keys || typeof keys !== 'object') {
+    return res.status(400).json({ error: 'Invalid keys object' });
+  }
+  
+  try {
+    const keysStr = JSON.stringify(keys);
+    await run('UPDATE profiles SET api_keys = ? WHERE id = ?', [keysStr, req.user.id]);
+    res.json({ success: true });
+  } catch (err) {
+    res.status(500).json({ error: err.message });
+  }
+});
+
 // 4. Get all projects for user
 app.get('/api/projects', authenticate, async (req, res) => {
   try {

src/components/DashboardSettings.tsx

@@ -2,6 +2,7 @@ import React, { useState, useEffect } from 'react';
 import { motion, AnimatePresence } from 'framer-motion';
 import { X, Settings, Key, Sparkles, Image as ImageIcon, Lightbulb, Box } from 'lucide-react';
 import { cn } from '../lib/utils';
+import { api } from '../lib/api';
 
 interface DashboardSettingsProps {
   isOpen: boolean;
@@ -19,25 +20,37 @@ export const DashboardSettings: React.FC<DashboardSettingsProps> = ({ isOpen, on
 
   useEffect(() => {
     if (isOpen) {
-      setFalApiKey(localStorage.getItem('FAL_API_KEY') || '');
-      setTripoApiKey(localStorage.getItem('TRIPO_API_KEY') || '');
-      setMeshyApiKey(localStorage.getItem('MESHY_API_KEY') || '');
-      setStabilityApiKey(localStorage.getItem('stability_api_key') || '');
-      setOpenAiKey(localStorage.getItem('openai_api_key') || '');
-      setGeminiApiKey(localStorage.getItem('GEMINI_API_KEY') || '');
-      setNanoBananaApiKey(localStorage.getItem('NANO_BANANA_API_KEY') || '');
+      api.getUserKeys().then(keys => {
+        setFalApiKey(keys.FAL_API_KEY || '');
+        setTripoApiKey(keys.TRIPO_API_KEY || '');
+        setMeshyApiKey(keys.MESHY_API_KEY || '');
+        setStabilityApiKey(keys.stability_api_key || '');
+        setOpenAiKey(keys.openai_api_key || '');
+        setGeminiApiKey(keys.GEMINI_API_KEY || '');
+        setNanoBananaApiKey(keys.NANO_BANANA_API_KEY || '');
+      }).catch(err => {
+        console.error("Failed to load user keys", err);
+      });
     }
   }, [isOpen]);
 
-  const saveKeys = () => {
-    localStorage.setItem('FAL_API_KEY', falApiKey);
-    localStorage.setItem('TRIPO_API_KEY', tripoApiKey);
-    localStorage.setItem('MESHY_API_KEY', meshyApiKey);
-    localStorage.setItem('stability_api_key', stabilityApiKey);
-    localStorage.setItem('openai_api_key', openAiKey);
-    localStorage.setItem('GEMINI_API_KEY', geminiApiKey);
-    localStorage.setItem('NANO_BANANA_API_KEY', nanoBananaApiKey);
-    onClose();
+  const saveKeys = async () => {
+    const keys = {
+      FAL_API_KEY: falApiKey,
+      TRIPO_API_KEY: tripoApiKey,
+      MESHY_API_KEY: meshyApiKey,
+      stability_api_key: stabilityApiKey,
+      openai_api_key: openAiKey,
+      GEMINI_API_KEY: geminiApiKey,
+      NANO_BANANA_API_KEY: nanoBananaApiKey
+    };
+    try {
+      await api.saveUserKeys(keys);
+      onClose();
+    } catch (err) {
+      console.error("Failed to save keys", err);
+      alert("Failed to save API keys to database");
+    }
   };
 
   if (!isOpen) return null;

src/lib/api.ts

@@ -39,6 +39,25 @@ export const api = {
     return data;
   },
   
+  // API Keys
+  getUserKeys: async () => {
+    const res = await fetch(`${API_URL}/user/keys`, { headers: getHeaders() });
+    const data = await res.json();
+    if (!res.ok) throw new Error(data.error);
+    return data.keys || {};
+  },
+  
+  saveUserKeys: async (keys) => {
+    const res = await fetch(`${API_URL}/user/keys`, {
+      method: 'PUT',
+      headers: getHeaders(),
+      body: JSON.stringify({ keys })
+    });
+    const data = await res.json();
+    if (!res.ok) throw new Error(data.error);
+    return data;
+  },
+  
   // Projects
   getProjects: async () => {
     const res = await fetch(`${API_URL}/projects`, { headers: getHeaders() });

src/pages/SparkPlug.tsx

@@ -40,8 +40,10 @@ export default function SparkPlug() {
     setIsLoading(true);
     
     try {
-      // Simulate reading PDF with Gemini
-      const geminiKey = localStorage.getItem('GEMINI_API_KEY');
+      // Validate keys
+      const keys = await api.getUserKeys();
+      const geminiKey = keys.GEMINI_API_KEY;
+      
       if (!geminiKey) {
         alert("Please configure your Gemini API Key in the Dashboard Settings first.");
         setIsLoading(false);
@@ -69,7 +71,10 @@ export default function SparkPlug() {
     setIsLoading(true);
     
     try {
-      const nanoBananaKey = localStorage.getItem('NANO_BANANA_API_KEY');
+      // Validate keys
+      const keys = await api.getUserKeys();
+      const nanoBananaKey = keys.NANO_BANANA_API_KEY;
+      
       if (!nanoBananaKey) {
         alert("Please configure your Nano Banana API Key in the Dashboard Settings first.");
         setIsLoading(false);
@@ -102,7 +107,10 @@ export default function SparkPlug() {
     setIsLoading(true);
     
     try {
-      const meshyKey = localStorage.getItem('MESHY_API_KEY');
+      // Validate keys
+      const keys = await api.getUserKeys();
+      const meshyKey = keys.MESHY_API_KEY;
+      
       if (!meshyKey) {
         alert("Please configure your Meshy API Key in the Dashboard Settings first.");
         setIsLoading(false);