// AWS Lambda with Hono
import { Hono } from 'hono';
import { handle } from 'hono/aws-lambda';

const app = new Hono();

app.get('/users/:id', async (c) => {
  const { id } = c.req.param();
  const user = await db.user.findUnique({ where: { id } });
  
  if (!user) {
    return c.json({ error: 'User not found' }, 404);
  }
  
  return c.json(user);
});

app.post('/users', async (c) => {
  const body = await c.req.json();
  const user = await db.user.create({ data: body });
  return c.json(user, 201);
});

// Export handler for AWS Lambda
export const handler = handle(app);

// SQS Event Handler
import type { SQSEvent } from 'aws-lambda';

export const handler = async (event: SQSEvent) => {
  const results = await Promise.allSettled(
    event.Records.map(async (record) => {
      const order = JSON.parse(record.body);
      
      // Process the order
      await processOrder(order);
      
      // Send confirmation email
      await sendConfirmationEmail(order.userId, order.id);
      
      return { orderId: order.id, status: 'processed' };
    })
  );
  
  // Return failed messages for retry
  const failures = results
    .map((r, i) => r.status === 'rejected' ? event.Records[i].messageId : null)
    .filter(Boolean);
  
  return {
    batchItemFailures: failures.map(id => ({ itemIdentifier: id }))
  };
};

// Supabase client setup
import { createClient } from '@supabase/supabase-js';

const supabase = createClient(
  process.env.SUPABASE_URL!,
  process.env.SUPABASE_ANON_KEY!
);

// Real-time subscription
const subscribeToOrders = (userId: string, callback: (order: Order) => void) => {
  return supabase
    .channel('orders')
    .on(
      'postgres_changes',
      {
        event: 'INSERT',
        schema: 'public',
        table: 'orders',
        filter: `user_id=eq.${userId}`
      },
      (payload) => callback(payload.new as Order)
    )
    .subscribe();
};

// Database operations with RLS
const getUserOrders = async (userId: string) => {
  const { data, error } = await supabase
    .from('orders')
    .select(`
      id,
      status,
      total,
      items:order_items(
        product:products(name, price),
        quantity
      )
    `)
    .eq('user_id', userId)
    .order('created_at', { ascending: false });
  
  if (error) throw error;
  return data;
};

// Clerk authentication integration
import { clerkMiddleware, getAuth } from '@hono/clerk-auth';
import { Hono } from 'hono';

const app = new Hono();

// Apply Clerk middleware
app.use('*', clerkMiddleware());

// Protected route
app.get('/api/profile', async (c) => {
  const auth = getAuth(c);
  
  if (!auth?.userId) {
    return c.json({ error: 'Unauthorized' }, 401);
  }
  
  const user = await db.user.findUnique({
    where: { clerkId: auth.userId }
  });
  
  return c.json(user);
});

// Cloudflare Workers / Vercel Edge
import { Hono } from 'hono';

const app = new Hono();

// Geolocation-based routing
app.get('/api/pricing', async (c) => {
  const country = c.req.header('cf-ipcountry') || 'US';
  
  const pricing = await getPricingForRegion(country);
  
  return c.json(pricing, {
    headers: {
      'Cache-Control': 'public, max-age=3600',
      'CDN-Cache-Control': 'public, max-age=86400'
    }
  });
});

// A/B testing at the edge
app.get('/api/experiment/:name', async (c) => {
  const { name } = c.req.param();
  const userId = c.req.header('x-user-id') || crypto.randomUUID();
  
  // Deterministic bucket assignment
  const bucket = hashToBucket(userId, name);
  const variant = bucket < 50 ? 'control' : 'treatment';
  
  return c.json({ 
    experiment: name,
    variant,
    config: await getExperimentConfig(name, variant)
  });
});

// Edge caching with stale-while-revalidate
app.get('/api/products/:id', async (c) => {
  const { id } = c.req.param();
  const cacheKey = `product:${id}`;
  
  // Check edge cache
  const cached = await c.env.KV.get(cacheKey, 'json');
  if (cached) {
    // Revalidate in background
    c.executionCtx.waitUntil(revalidateProduct(c.env.KV, id));
    return c.json(cached);
  }
  
  const product = await fetchProduct(id);
  await c.env.KV.put(cacheKey, JSON.stringify(product), { expirationTtl: 3600 });
  
  return c.json(product);
});

export default app;

import { Hono } from 'hono';
import { handle } from 'hono/aws-lambda';
import { cors } from 'hono/cors';
import { logger } from 'hono/logger';

const app = new Hono();

// Middleware
app.use('*', logger());
app.use('*', cors());

// Routes
app.route('/users', userRoutes);
app.route('/orders', orderRoutes);
app.route('/products', productRoutes);

// Health check
app.get('/health', (c) => c.json({ status: 'healthy' }));

// Error handling
app.onError((err, c) => {
  console.error('Error:', err);
  return c.json(
    { error: err.message },
    err instanceof HTTPException ? err.status : 500
  );
});

export const handler = handle(app);

import { Hono } from 'hono';
import { zValidator } from '@hono/zod-validator';
import { z } from 'zod';

const userRoutes = new Hono();

const createUserSchema = z.object({
  email: z.string().email(),
  name: z.string().min(2),
});

userRoutes.get('/:id', async (c) => {
  const { id } = c.req.param();
  const user = await userService.findById(id);
  
  if (!user) {
    return c.json({ error: 'User not found' }, 404);
  }
  
  return c.json(user);
});

userRoutes.post('/', zValidator('json', createUserSchema), async (c) => {
  const data = c.req.valid('json');
  const user = await userService.create(data);
  return c.json(user, 201);
});

export { userRoutes };

import type { 
  SQSEvent, 
  S3Event, 
  DynamoDBStreamEvent 
} from 'aws-lambda';

// SQS Handler
export const sqsHandler = async (event: SQSEvent) => {
  const batchItemFailures: { itemIdentifier: string }[] = [];
  
  for (const record of event.Records) {
    try {
      const message = JSON.parse(record.body);
      await processMessage(message);
    } catch (error) {
      console.error('Failed to process message:', error);
      batchItemFailures.push({ itemIdentifier: record.messageId });
    }
  }
  
  return { batchItemFailures };
};

// S3 Handler
export const s3Handler = async (event: S3Event) => {
  for (const record of event.Records) {
    const bucket = record.s3.bucket.name;
    const key = decodeURIComponent(record.s3.object.key);
    
    if (record.eventName.startsWith('ObjectCreated')) {
      await processNewFile(bucket, key);
    } else if (record.eventName.startsWith('ObjectRemoved')) {
      await handleFileRemoval(bucket, key);
    }
  }
};

// DynamoDB Streams Handler
export const dynamoHandler = async (event: DynamoDBStreamEvent) => {
  for (const record of event.Records) {
    if (record.eventName === 'INSERT') {
      const newItem = unmarshall(record.dynamodb!.NewImage!);
      await onItemCreated(newItem);
    } else if (record.eventName === 'MODIFY') {
      const oldItem = unmarshall(record.dynamodb!.OldImage!);
      const newItem = unmarshall(record.dynamodb!.NewImage!);
      await onItemUpdated(oldItem, newItem);
    } else if (record.eventName === 'REMOVE') {
      const oldItem = unmarshall(record.dynamodb!.OldImage!);
      await onItemDeleted(oldItem);
    }
  }
};

import type { ScheduledEvent } from 'aws-lambda';

// Daily cleanup task
export const dailyCleanup = async (event: ScheduledEvent) => {
  console.log('Running daily cleanup at:', event.time);
  
  // Delete expired sessions
  const expiredSessions = await db.session.deleteMany({
    where: {
      expiresAt: { lt: new Date() }
    }
  });
  console.log(`Deleted ${expiredSessions.count} expired sessions`);
  
  // Archive old orders
  const oldOrders = await db.order.findMany({
    where: {
      status: 'completed',
      completedAt: { lt: subtractDays(new Date(), 90) }
    }
  });
  
  for (const order of oldOrders) {
    await archiveOrder(order);
  }
  console.log(`Archived ${oldOrders.length} old orders`);
  
  return { success: true };
};

// Hourly metrics aggregation
export const aggregateMetrics = async (event: ScheduledEvent) => {
  const hourAgo = subtractHours(new Date(), 1);
  
  const metrics = await db.event.groupBy({
    by: ['type'],
    _count: { id: true },
    where: {
      createdAt: { gte: hourAgo }
    }
  });
  
  await db.hourlyMetrics.create({
    data: {
      hour: hourAgo,
      metrics: JSON.stringify(metrics)
    }
  });
  
  return { aggregated: metrics.length };
};