brainy/docs/guides/nextjs-integration.md

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# Next.js Integration Guide
Complete guide to integrating Brainy with Next.js applications, covering App Router, Pages Router, API routes, and deployment strategies.
## 🚀 Quick Start
### Installation
```bash
npx create-next-app@latest my-brainy-app
cd my-brainy-app
npm install @soulcraft/brainy
```
### Basic Setup
```jsx
// app/components/BrainyProvider.jsx
'use client'
import { createContext, useContext, useEffect, useState } from 'react'
import { Brainy } from '@soulcraft/brainy'
const BrainyContext = createContext()
export function BrainyProvider({ children }) {
const [brain, setBrain] = useState(null)
const [isReady, setIsReady] = useState(false)
useEffect(() => {
const initBrain = async () => {
const newBrain = new Brainy({
storage: { type: 'opfs' } // Browser storage for client-side
})
await newBrain.init()
setBrain(newBrain)
setIsReady(true)
}
initBrain()
}, [])
return (
<BrainyContext.Provider value={{ brain, isReady }}>
{children}
</BrainyContext.Provider>
)
}
export const useBrainy = () => {
const context = useContext(BrainyContext)
if (!context) {
throw new Error('useBrainy must be used within BrainyProvider')
}
return context
}
```
## 📱 App Router (Next.js 13+)
### Root Layout Setup
```jsx
// app/layout.jsx
import { BrainyProvider } from './components/BrainyProvider'
import './globals.css'
export const metadata = {
title: 'My Brainy App',
description: 'AI-powered search with Brainy'
}
export default function RootLayout({ children }) {
return (
<html lang="en">
<body>
<BrainyProvider>
{children}
</BrainyProvider>
</body>
</html>
)
}
```
### Search Component
```jsx
// app/components/Search.jsx
'use client'
import { useState, useCallback } from 'react'
import { useBrainy } from './BrainyProvider'
export function Search() {
const { brain, isReady } = useBrainy()
const [query, setQuery] = useState('')
const [results, setResults] = useState([])
const [loading, setLoading] = useState(false)
const handleSearch = useCallback(async (searchQuery) => {
if (!isReady || !searchQuery.trim()) {
setResults([])
return
}
setLoading(true)
try {
const searchResults = await brain.find(searchQuery)
setResults(searchResults)
} catch (error) {
console.error('Search error:', error)
setResults([])
} finally {
setLoading(false)
}
}, [brain, isReady])
if (!isReady) {
return (
<div className="flex items-center justify-center p-4">
<div className="animate-spin rounded-full h-8 w-8 border-b-2 border-blue-600"></div>
<span className="ml-2">Initializing AI...</span>
</div>
)
}
return (
<div className="max-w-4xl mx-auto p-6">
<div className="mb-6">
<input
type="text"
value={query}
onChange={(e) => {
setQuery(e.target.value)
handleSearch(e.target.value)
}}
placeholder="Search with AI..."
className="w-full px-4 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-transparent"
/>
</div>
{loading && (
<div className="text-center py-4">
<span className="text-gray-600">Searching...</span>
</div>
)}
<div className="space-y-4">
{results.map((result, index) => (
<div key={result.id || index} className="bg-white p-4 rounded-lg shadow border">
<h3 className="font-semibold text-lg mb-2">{result.data}</h3>
<div className="flex justify-between items-center text-sm text-gray-600">
<span>Score: {(result.score * 100).toFixed(1)}%</span>
{result.metadata && (
<span>Type: {result.metadata.type || 'Unknown'}</span>
)}
</div>
</div>
))}
</div>
{query && !loading && results.length === 0 && (
<div className="text-center py-8 text-gray-500">
No results found for "{query}"
</div>
)}
</div>
)
}
```
### Main Page
```jsx
// app/page.jsx
import { Search } from './components/Search'
export default function HomePage() {
return (
<main className="min-h-screen bg-gray-50">
<div className="container mx-auto py-8">
<h1 className="text-3xl font-bold text-center mb-8">
AI-Powered Search with Brainy
</h1>
<Search />
</div>
</main>
)
}
```
## 🗂️ Pages Router
### _app.jsx Setup
```jsx
// pages/_app.jsx
import { BrainyProvider } from '../components/BrainyProvider'
import '../styles/globals.css'
export default function App({ Component, pageProps }) {
return (
<BrainyProvider>
<Component {...pageProps} />
</BrainyProvider>
)
}
```
### Search Page
```jsx
// pages/search.jsx
import { useState } from 'react'
import { useBrainy } from '../components/BrainyProvider'
export default function SearchPage() {
const { brain, isReady } = useBrainy()
const [query, setQuery] = useState('')
const [results, setResults] = useState([])
const handleSearch = async (e) => {
e.preventDefault()
if (!isReady || !query.trim()) return
const searchResults = await brain.find(query)
setResults(searchResults)
}
return (
<div className="container mx-auto p-6">
<h1 className="text-3xl font-bold mb-6">Search</h1>
<form onSubmit={handleSearch} className="mb-6">
<div className="flex gap-2">
<input
type="text"
value={query}
onChange={(e) => setQuery(e.target.value)}
placeholder="Search..."
className="flex-1 px-4 py-2 border rounded"
disabled={!isReady}
/>
<button
type="submit"
disabled={!isReady || !query.trim()}
className="px-6 py-2 bg-blue-600 text-white rounded disabled:opacity-50"
>
Search
</button>
</div>
</form>
<div className="space-y-4">
{results.map((result, index) => (
<div key={index} className="p-4 border rounded">
<h3 className="font-semibold">{result.data}</h3>
<p className="text-sm text-gray-600">
Score: {(result.score * 100).toFixed(1)}%
</p>
</div>
))}
</div>
</div>
)
}
```
## 🔌 API Routes
### Search API Endpoint
```javascript
// app/api/search/route.js (App Router)
import { Brainy } from '@soulcraft/brainy'
let brain = null
async function initBrain() {
if (!brain) {
brain = new Brainy({
storage: {
type: 'filesystem',
path: process.env.BRAINY_DATA_PATH || './brainy-data'
}
})
await brain.init()
}
return brain
}
export async function POST(request) {
try {
const { query, options = {} } = await request.json()
if (!query) {
return Response.json({ error: 'Query is required' }, { status: 400 })
}
const brainInstance = await initBrain()
const results = await brainInstance.find(query, options)
return Response.json({ results, count: results.length })
} catch (error) {
console.error('Search API error:', error)
return Response.json(
{ error: 'Search failed', details: error.message },
{ status: 500 }
)
}
}
export async function GET() {
try {
const brainInstance = await initBrain()
const stats = await brainInstance.stats()
return Response.json({
status: 'ready',
stats: {
totalItems: stats.totalItems,
storageType: stats.storageType
}
})
} catch (error) {
return Response.json(
{ status: 'error', error: error.message },
{ status: 500 }
)
}
}
```
```javascript
// pages/api/search.js (Pages Router)
import { Brainy } from '@soulcraft/brainy'
let brain = null
async function initBrain() {
if (!brain) {
brain = new Brainy({
storage: { type: 'filesystem', path: './brainy-data' }
})
await brain.init()
}
return brain
}
export default async function handler(req, res) {
if (req.method === 'POST') {
try {
const { query, options = {} } = req.body
if (!query) {
return res.status(400).json({ error: 'Query is required' })
}
const brainInstance = await initBrain()
const results = await brainInstance.find(query, options)
res.status(200).json({ results, count: results.length })
} catch (error) {
console.error('Search API error:', error)
res.status(500).json({ error: 'Search failed', details: error.message })
}
} else {
res.setHeader('Allow', ['POST'])
res.status(405).end(`Method ${req.method} Not Allowed`)
}
}
```
### Add Data API
```javascript
// app/api/data/route.js
import { Brainy } from '@soulcraft/brainy'
let brain = null
async function initBrain() {
if (!brain) {
brain = new Brainy({
storage: { type: 'filesystem', path: './brainy-data' }
})
await brain.init()
}
return brain
}
export async function POST(request) {
try {
const { data, type, metadata } = await request.json()
if (!data || !type) {
return Response.json(
{ error: 'Data and type are required' },
{ status: 400 }
)
}
const brainInstance = await initBrain()
const id = await brainInstance.add({ data, type, metadata })
return Response.json({ id, success: true })
} catch (error) {
console.error('Add data API error:', error)
return Response.json(
{ error: 'Failed to add data', details: error.message },
{ status: 500 }
)
}
}
```
## 🔗 Server Actions (App Router)
```jsx
// app/actions/brainy.js
'use server'
import { Brainy } from '@soulcraft/brainy'
let brain = null
async function initBrain() {
if (!brain) {
brain = new Brainy({
storage: { type: 'filesystem', path: './brainy-data' }
})
await brain.init()
}
return brain
}
export async function searchAction(query, options = {}) {
try {
const brainInstance = await initBrain()
const results = await brainInstance.find(query, options)
return { results, error: null }
} catch (error) {
console.error('Search action error:', error)
return { results: [], error: error.message }
}
}
export async function addDataAction(data, type, metadata) {
try {
const brainInstance = await initBrain()
const id = await brainInstance.add({ data, type, metadata })
return { id, error: null }
} catch (error) {
console.error('Add data action error:', error)
return { id: null, error: error.message }
}
}
```
## 📊 Data Management Features
### Admin Dashboard
```jsx
// app/admin/page.jsx
'use client'
import { useState, useEffect } from 'react'
import { useBrainy } from '../components/BrainyProvider'
export default function AdminPage() {
const { brain, isReady } = useBrainy()
const [stats, setStats] = useState(null)
const [newData, setNewData] = useState('')
const [newType, setNewType] = useState('concept')
useEffect(() => {
if (isReady) {
loadStats()
}
}, [isReady])
const loadStats = async () => {
try {
const brainStats = await brain.stats()
setStats(brainStats)
} catch (error) {
console.error('Failed to load stats:', error)
}
}
const handleAddData = async (e) => {
e.preventDefault()
if (!newData.trim()) return
try {
await brain.add({
data: newData,
type: newType,
metadata: { addedAt: new Date().toISOString() }
})
setNewData('')
loadStats() // Refresh stats
} catch (error) {
console.error('Failed to add data:', error)
}
}
if (!isReady) {
return <div>Loading admin panel...</div>
}
return (
<div className="container mx-auto p-6">
<h1 className="text-3xl font-bold mb-6">Admin Dashboard</h1>
{/* Stats */}
{stats && (
<div className="grid grid-cols-1 md:grid-cols-3 gap-4 mb-8">
<div className="bg-blue-100 p-4 rounded">
<h3 className="font-semibold">Total Items</h3>
<p className="text-2xl">{stats.totalItems}</p>
</div>
<div className="bg-green-100 p-4 rounded">
<h3 className="font-semibold">Storage Type</h3>
<p className="text-lg">{stats.storageType}</p>
</div>
<div className="bg-purple-100 p-4 rounded">
<h3 className="font-semibold">Memory Usage</h3>
<p className="text-lg">{stats.memoryUsage || 'N/A'}</p>
</div>
</div>
)}
{/* Add Data Form */}
<div className="bg-white p-6 rounded-lg shadow">
<h2 className="text-xl font-semibold mb-4">Add New Data</h2>
<form onSubmit={handleAddData} className="space-y-4">
<div>
<label className="block text-sm font-medium mb-1">Data</label>
<textarea
value={newData}
onChange={(e) => setNewData(e.target.value)}
placeholder="Enter data to add..."
className="w-full px-3 py-2 border rounded focus:ring-2 focus:ring-blue-500"
rows={3}
required
/>
</div>
<div>
<label className="block text-sm font-medium mb-1">Type</label>
<select
value={newType}
onChange={(e) => setNewType(e.target.value)}
className="w-full px-3 py-2 border rounded focus:ring-2 focus:ring-blue-500"
>
<option value="concept">Concept</option>
<option value="document">Document</option>
<option value="person">Person</option>
<option value="project">Project</option>
<option value="task">Task</option>
</select>
</div>
<button
type="submit"
className="px-6 py-2 bg-blue-600 text-white rounded hover:bg-blue-700"
>
Add Data
</button>
</form>
</div>
</div>
)
}
```
## 🚀 Deployment
### Environment Variables
```bash
# .env.local
BRAINY_DATA_PATH=/app/brainy-data
NODE_ENV=production
```
### Vercel Deployment
```json
// vercel.json
{
"functions": {
"app/api/**/*.js": {
"maxDuration": 30
}
},
"env": {
"BRAINY_DATA_PATH": "/tmp/brainy-data"
}
}
```
### Docker Setup
```dockerfile
# Dockerfile
FROM node:22-alpine
WORKDIR /app
# Copy package files
COPY package*.json ./
RUN npm ci --only=production
# Copy app files
COPY . .
# Build the app
RUN npm run build
# Create data directory
RUN mkdir -p /app/brainy-data
EXPOSE 3000
CMD ["npm", "start"]
```
### next.config.js
```javascript
// next.config.js
/** @type {import('next').NextConfig} */
const nextConfig = {
experimental: {
serverComponentsExternalPackages: ['@soulcraft/brainy']
},
webpack: (config, { isServer }) => {
if (!isServer) {
config.resolve.fallback = {
...config.resolve.fallback,
fs: false,
path: false,
crypto: false
}
}
return config
}
}
module.exports = nextConfig
```
## ⚡ Performance Optimization
### Client-Side Optimization
```jsx
// app/hooks/useBrainCache.js
import { useState, useCallback, useMemo } from 'react'
export function useBrainCache() {
const [cache, setCache] = useState(new Map())
const getCachedResult = useCallback((query) => {
return cache.get(query)
}, [cache])
const setCachedResult = useCallback((query, result) => {
setCache(prev => {
const newCache = new Map(prev)
newCache.set(query, result)
// Keep only last 100 results
if (newCache.size > 100) {
const firstKey = newCache.keys().next().value
newCache.delete(firstKey)
}
return newCache
})
}, [])
return { getCachedResult, setCachedResult }
}
```
### Debounced Search
```jsx
// app/hooks/useDebounceSearch.js
import { useState, useEffect, useCallback } from 'react'
import { useBrainy } from '../components/BrainyProvider'
export function useDebounceSearch(delay = 300) {
const { brain, isReady } = useBrainy()
const [query, setQuery] = useState('')
const [results, setResults] = useState([])
const [loading, setLoading] = useState(false)
const search = useCallback(async (searchQuery) => {
if (!isReady || !searchQuery.trim()) {
setResults([])
return
}
setLoading(true)
try {
const searchResults = await brain.find(searchQuery)
setResults(searchResults)
} catch (error) {
console.error('Search error:', error)
setResults([])
} finally {
setLoading(false)
}
}, [brain, isReady])
useEffect(() => {
const timer = setTimeout(() => {
search(query)
}, delay)
return () => clearTimeout(timer)
}, [query, delay, search])
return { query, setQuery, results, loading }
}
```
## 🔒 Security Best Practices
### Input Validation
```javascript
// app/utils/validation.js
export function validateSearchQuery(query) {
if (typeof query !== 'string') {
throw new Error('Query must be a string')
}
if (query.length > 1000) {
throw new Error('Query too long')
}
// Sanitize query
return query.trim()
}
export function validateDataInput(data, type, metadata) {
if (!data || !type) {
throw new Error('Data and type are required')
}
if (typeof data !== 'string') {
throw new Error('Data must be a string')
}
if (data.length > 10000) {
throw new Error('Data too long')
}
return { data: data.trim(), type, metadata }
}
```
### Rate Limiting
```javascript
// app/middleware/rateLimit.js
const requests = new Map()
export function rateLimit(req, limit = 100, window = 60000) {
const ip = req.headers['x-forwarded-for'] || req.connection.remoteAddress
const now = Date.now()
if (!requests.has(ip)) {
requests.set(ip, [])
}
const userRequests = requests.get(ip)
// Remove old requests
const validRequests = userRequests.filter(time => now - time < window)
if (validRequests.length >= limit) {
throw new Error('Rate limit exceeded')
}
validRequests.push(now)
requests.set(ip, validRequests)
return true
}
```
## 📚 Advanced Patterns
### Context + Reducer Pattern
```jsx
// app/contexts/BrainyContext.jsx
'use client'
import { createContext, useContext, useReducer, useEffect } from 'react'
import { Brainy } from '@soulcraft/brainy'
const BrainyContext = createContext()
const initialState = {
brain: null,
isReady: false,
error: null,
stats: null
}
function brainyReducer(state, action) {
switch (action.type) {
case 'INIT_START':
return { ...state, error: null }
case 'INIT_SUCCESS':
return { ...state, brain: action.brain, isReady: true, error: null }
case 'INIT_ERROR':
return { ...state, error: action.error, isReady: false }
case 'UPDATE_STATS':
return { ...state, stats: action.stats }
default:
return state
}
}
export function BrainyProvider({ children }) {
const [state, dispatch] = useReducer(brainyReducer, initialState)
useEffect(() => {
const initBrain = async () => {
dispatch({ type: 'INIT_START' })
try {
const brain = new Brainy()
await brain.init()
dispatch({ type: 'INIT_SUCCESS', brain })
// Load initial stats
const stats = await brain.stats()
dispatch({ type: 'UPDATE_STATS', stats })
} catch (error) {
console.error('Brain initialization failed:', error)
dispatch({ type: 'INIT_ERROR', error: error.message })
}
}
initBrain()
}, [])
return (
<BrainyContext.Provider value={{ state, dispatch }}>
{children}
</BrainyContext.Provider>
)
}
export const useBrainyContext = () => {
const context = useContext(BrainyContext)
if (!context) {
throw new Error('useBrainyContext must be used within BrainyProvider')
}
return context
}
```
## 🔍 Testing
### Unit Tests
```javascript
// __tests__/brainy.test.js
import { render, screen, waitFor } from '@testing-library/react'
import { BrainyProvider } from '../app/components/BrainyProvider'
import { Search } from '../app/components/Search'
// Mock Brainy
jest.mock('@soulcraft/brainy', () => ({
Brainy: jest.fn().mockImplementation(() => ({
init: jest.fn().mockResolvedValue(undefined),
find: jest.fn().mockResolvedValue([
{ id: '1', data: 'Test result', score: 0.9 }
])
}))
}))
describe('Search Component', () => {
it('renders search input', async () => {
render(
<BrainyProvider>
<Search />
</BrainyProvider>
)
await waitFor(() => {
expect(screen.getByPlaceholderText('Search with AI...')).toBeInTheDocument()
})
})
})
```
## 📖 Complete Example Project
Here's a complete mini-project structure:
```
my-brainy-app/
├── app/
│ ├── components/
│ │ ├── BrainyProvider.jsx
│ │ ├── Search.jsx
│ │ └── AdminPanel.jsx
│ ├── api/
│ │ ├── search/route.js
│ │ └── data/route.js
│ ├── admin/
│ │ └── page.jsx
│ ├── layout.jsx
│ └── page.jsx
├── next.config.js
├── package.json
└── README.md
```
This structure provides a complete, production-ready Next.js application with Brainy integration.
## 🎯 Next Steps
- [Vue.js Integration Guide](vue-integration.md) - Vue.js patterns
- [Production Deployment](../deployment/CLOUD_DEPLOYMENT_GUIDE.md) - Deploy to production
- [API Reference](../api/README.md) - Complete API documentation
- [Examples Repository](https://github.com/soulcraftlabs/brainy-examples) - More examples