// RESTful API with validation and error handling
import { Router } from 'express';
import { z } from 'zod';
import { authenticateToken, authorize } from '../middleware/auth';
import { TaskService } from '../services/task.service';

const router = Router();
const taskService = new TaskService();

// Validation schema
const createTaskSchema = z.object({
  title: z.string().min(1).max(200),
  description: z.string().max(2000).optional(),
  priority: z.enum(['low', 'medium', 'high']),
  dueDate: z.string().datetime().optional(),
});

// GET /api/tasks
router.get('/', 
  authenticateToken,
  async (req, res, next) => {
    try {
      const tasks = await taskService.findByUser(req.user.id);
      res.json({ data: tasks });
    } catch (error) {
      next(error);
    }
  }
);

// POST /api/tasks
router.post('/',
  authenticateToken,
  async (req, res, next) => {
    try {
      const validated = createTaskSchema.parse(req.body);
      const task = await taskService.create({
        ...validated,
        userId: req.user.id,
      });
      res.status(201).json({ data: task });
    } catch (error) {
      next(error);
    }
  }
);

export default router;

# GitHub Actions workflow
name: CI/CD Pipeline

on:
  push:
    branches: [main, develop]
  pull_request:
    branches: [main]

jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      
      - name: Setup Node.js
        uses: actions/setup-node@v3
        with:
          node-version: '18'
          cache: 'npm'
      
      - name: Install dependencies
        run: npm ci
      
      - name: Run linter
        run: npm run lint
      
      - name: Run tests
        run: npm run test:ci
      
      - name: Check coverage
        run: npm run test:coverage
      
      - name: Build
        run: npm run build
  
  deploy:
    needs: test
    if: github.ref == 'refs/heads/main'
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      
      - name: Deploy to production
        run: |
          echo "Deploying to production..."
          # Add deployment commands here

# Analytics Performance Report
## Week of March 4, 2026

## 📈 Key Metrics

| Metric | Current | Previous | Change | Target |
|--------|---------|----------|--------|--------|
| Daily Active Users | 12,450 | 11,200 | +11.2% | 15,000 |
| Weekly Active Users | 34,890 | 32,100 | +8.7% | 40,000 |
| Avg Session Duration | 8m 34s | 7m 12s | +19.1% | 10m |
| Bounce Rate | 42% | 48% | -12.5% | <40% |
| Conversion Rate | 3.8% | 3.2% | +18.8% | 5% |

## 🔥 Top Performing Features

1. **Task Dashboard** (45% of sessions)
   - 12m avg session duration
   - 2.3 tasks created per session
   - 89% return rate

2. **Collaboration** (32% of sessions)
   - 3.4 team members invited per session
   - Viral coefficient: 1.4
   - 72% activation rate

3. **Mobile App** (28% of traffic)
   - 15m avg session (75% higher than web)
   - 4.5 / 5 star rating
   - 68% daily retention

## 🚨 Areas Needing Attention

1. **Onboarding Drop-off**
   - 35% abandon at step 2
   - Recommend: Simplify initial setup
   - A/B test: Skip optional fields

2. **Search Functionality**
   - 18% of searches return 0 results
   - 52% of users abandon after failed search
   - Action: Improve search algorithm

## 📊 Growth Trends

- User acquisition: +15% MoM
- Organic traffic: 62% of new users
- Referral traffic: 24% of new users
- Paid acquisition: 14% of new users

**Recommendation**: Increase investment in referral program

# Performance Benchmark Report

## ⏱️ Load Time Analysis

| Page | P50 | P95 | P99 | Target | Status |
|------|-----|-----|-----|--------|--------|
| Homepage | 1.2s | 2.1s | 3.4s | <2.5s | ✅ PASS |
| Dashboard | 1.8s | 3.2s | 4.8s | <2.5s | ❌ FAIL |
| Task Detail | 0.9s | 1.6s | 2.1s | <2.5s | ✅ PASS |
| Settings | 1.1s | 1.9s | 2.4s | <2.5s | ✅ PASS |

## 🚀 Core Web Vitals

**Largest Contentful Paint (LCP)**:
- Desktop: 1.8s (✅ Good)
- Mobile: 2.9s (🟡 Needs Improvement)
- Target: <2.5s

**First Input Delay (FID)**:
- Desktop: 45ms (✅ Good)
- Mobile: 78ms (✅ Good)
- Target: <100ms

**Cumulative Layout Shift (CLS)**:
- Desktop: 0.05 (✅ Good)
- Mobile: 0.12 (❌ Poor)
- Target: <0.1

## 🔧 Optimization Recommendations

1. **Dashboard Performance** (Priority: HIGH)
   - Issue: Large data table causing 3.2s P95 load time
   - Fix: Implement virtualization (react-virtual)
   - Expected improvement: -60% load time

2. **Mobile LCP** (Priority: MEDIUM)
   - Issue: Hero image 2.4MB unoptimized
   - Fix: Convert to WebP, add responsive srcset
   - Expected improvement: -40% LCP

3. **Mobile CLS** (Priority: HIGH)
   - Issue: Font loading causes layout shift
   - Fix: Use font-display: swap, add size-adjust
   - Expected improvement: CLS < 0.1

## 📄 Load Testing Results

**Concurrent Users**: 1,000
**Duration**: 10 minutes
**Results**:
- Success rate: 99.8%
- Avg response time: 145ms
- P95 response time: 320ms
- Error rate: 0.2%

**Status**: ✅ PASS (meets 10x current traffic requirement)