511 lines
14 KiB
Markdown
511 lines
14 KiB
Markdown
# System Patterns - Final Architecture
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## Architectural Overview - PRODUCTION IMPLEMENTATION
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The Eliza Kragh v. Montana Association of the Deaf court docket website follows a modern full-stack architecture with clean separation of concerns, security best practices, and production-ready patterns.
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## Core Architecture Patterns
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### 1. Layered Architecture Pattern
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```
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┌─────────────────────────────────────┐
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│ Frontend Layer │
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│ (Next.js + React + TypeScript) │
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│ DeafGain Theme UI │
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└─────────────────────────────────────┘
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│
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HTTP/API
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│
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┌─────────────────────────────────────┐
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│ API Gateway Layer │
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│ (Express.js + Middleware) │
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│ Auth, Logging, Error Handling │
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└─────────────────────────────────────┘
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│
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┌─────────────────────────────────────┐
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│ Business Logic Layer │
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│ (Services + Routes) │
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│ Email Service, File Management │
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└─────────────────────────────────────┘
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│
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┌─────────────────────────────────────┐
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│ Data Access Layer │
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│ (Prisma ORM + SQL) │
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│ PostgreSQL + Redis Cache │
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└─────────────────────────────────────┘
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```
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### 2. MVC Pattern Implementation
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- **Model**: Prisma schema with TypeScript types
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- **View**: React components with Next.js pages
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- **Controller**: Express.js route handlers with business logic
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### 3. Repository Pattern
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- **Prisma ORM**: Abstracts database operations
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- **Type Safety**: Full TypeScript integration
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- **Query Optimization**: Efficient database queries with relationships
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## Security Patterns - PRODUCTION READY
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### 1. Authentication & Authorization
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```typescript
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// JWT-based authentication with middleware
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const authenticateToken = (req: AuthenticatedRequest, res: Response, next: NextFunction) => {
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const authHeader = req.headers['authorization'];
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const token = authHeader && authHeader.split(' ')[1];
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if (!token) {
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return res.status(401).json({ success: false, message: 'Access token required' });
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}
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jwt.verify(token, process.env.JWT_SECRET!, (err: any, user: any) => {
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if (err) {
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return res.status(403).json({ success: false, message: 'Invalid or expired token' });
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}
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req.user = user;
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next();
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});
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};
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```
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### 2. Input Validation Pattern
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```typescript
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// Joi validation schemas for all inputs
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const createDocketEntrySchema = Joi.object({
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date: Joi.date().required(),
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title: Joi.string().required().max(500),
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summary: Joi.string().required(),
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notes: Joi.string().optional().allow(''),
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});
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```
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### 3. File Security Pattern
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```typescript
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// UUID-based file naming with type validation
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const fileFilter = (req: any, file: Express.Multer.File, cb: any) => {
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if (file.mimetype === 'application/pdf') {
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cb(null, true);
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} else {
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cb(new Error('Only PDF files are allowed'), false);
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}
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};
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```
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## Data Patterns - IMPLEMENTED
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### 1. Database Schema Pattern
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```sql
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-- Normalized relational design with proper constraints
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CREATE TABLE docket_entries (
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id SERIAL PRIMARY KEY,
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date DATE NOT NULL,
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title VARCHAR(500) NOT NULL,
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summary TEXT NOT NULL,
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notes TEXT,
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created_at TIMESTAMP DEFAULT NOW(),
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updated_at TIMESTAMP DEFAULT NOW()
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);
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CREATE TABLE documents (
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id SERIAL PRIMARY KEY,
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docket_entry_id INTEGER REFERENCES docket_entries(id) ON DELETE CASCADE,
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title VARCHAR(255) NOT NULL,
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stored_filename VARCHAR(255) NOT NULL,
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-- Additional fields for complete document management
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);
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```
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### 2. Data Access Pattern
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```typescript
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// Prisma-based repository pattern with relationships
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const getDocketEntriesWithDocuments = async () => {
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return await prisma.docketEntry.findMany({
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include: {
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documents: {
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orderBy: { displayOrder: 'asc' }
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}
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},
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orderBy: { date: 'desc' }
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});
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};
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```
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### 3. Email Notification Pattern
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```typescript
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// Observer pattern for email notifications
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const createDocketEntry = async (data: DocketEntryData) => {
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const entry = await prisma.docketEntry.create({ data });
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// Trigger email notifications
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await emailService.notifySubscribersOfNewEntry(
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entry.title,
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entry.date.toISOString(),
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entry.summary
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);
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return entry;
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};
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```
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## Frontend Patterns - MODERN UI/UX
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### 1. Component Architecture
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```typescript
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// Functional components with hooks
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const HomePage = () => {
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const [docketEntries, setDocketEntries] = useState<DocketEntry[]>([]);
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const [loading, setLoading] = useState(true);
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useEffect(() => {
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fetchDocketEntries();
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}, []);
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// Component logic and JSX
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};
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```
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### 2. State Management Pattern
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```typescript
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// Local state with React hooks for simple state management
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const [expandedEntries, setExpandedEntries] = useState<Set<number>>(new Set());
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const toggleEntry = (entryId: number) => {
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const newExpanded = new Set(expandedEntries);
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if (newExpanded.has(entryId)) {
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newExpanded.delete(entryId);
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} else {
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newExpanded.add(entryId);
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}
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setExpandedEntries(newExpanded);
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};
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```
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### 3. Styling Pattern - DeafGain Theme
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```css
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/* CSS Variables for consistent theming */
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:root {
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--primary: #647C90; /* Slate blue */
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--secondary: #2C4A3E; /* Forest green */
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--accent-snow: #F5F7F9; /* Snow white background */
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--accent-mountain: #4A5568; /* Mountain gray text */
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--accent-lake: #A4C3D2; /* Alpine lake blue */
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}
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/* Modern component classes with animations */
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.docket-entry {
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@apply transition-all duration-300 hover:bg-gray-50 rounded-xl p-6 border-l-4;
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border-left-color: var(--accent-lake);
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}
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.docket-entry:hover {
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transform: translateY(-2px);
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box-shadow: 0 10px 25px rgba(0,0,0,0.1);
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}
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```
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## Email Service Patterns - GMAIL INTEGRATION
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### 1. Service Layer Pattern
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```typescript
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// Singleton email service with Gmail SMTP
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export class EmailService {
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private static instance: EmailService;
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private transporter: nodemailer.Transporter;
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private constructor() {
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this.transporter = nodemailer.createTransport({
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host: process.env['SMTP_HOST'] || 'smtp.gmail.com',
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port: parseInt(process.env['SMTP_PORT'] || '587'),
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secure: false,
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auth: {
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user: process.env['GOOGLE_EMAIL'],
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pass: process.env['GOOGLE_APP_PASSWORD'],
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},
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});
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}
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public static getInstance(): EmailService {
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if (!EmailService.instance) {
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EmailService.instance = new EmailService();
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}
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return EmailService.instance;
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}
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}
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```
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### 2. Template Pattern
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```typescript
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// Professional HTML email templates
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private generateNotificationEmail(title: string, date: string, summary: string): string {
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return `
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>New Court Filing Notification</title>
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<style>
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/* Professional email styling */
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.header { background-color: #1f2937; color: white; padding: 20px; }
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.content { background-color: #f9fafb; padding: 30px; }
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.filing-info { background-color: white; padding: 20px; border-left: 4px solid #3b82f6; }
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</style>
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</head>
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<body>
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<div class="header">
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<h1>Eliza Kragh v. Montana Association of the Deaf</h1>
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</div>
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<div class="content">
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<div class="filing-info">
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<div class="title">${title}</div>
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<div class="summary">${summary}</div>
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</div>
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</div>
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</body>
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</html>
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`;
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}
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```
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## Error Handling Patterns - PRODUCTION READY
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### 1. Global Error Handler
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```typescript
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// Centralized error handling middleware
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export const errorHandler = (
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err: Error,
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req: Request,
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res: Response,
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next: NextFunction
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) => {
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logger.error('Error occurred:', {
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error: err.message,
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stack: err.stack,
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url: req.url,
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method: req.method,
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ip: req.ip,
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});
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if (err.name === 'ValidationError') {
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return res.status(400).json({
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success: false,
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message: 'Validation error',
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details: err.message,
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});
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}
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res.status(500).json({
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success: false,
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message: 'Internal server error',
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});
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};
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```
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### 2. Async Error Wrapper
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```typescript
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// Wrapper for async route handlers
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export const asyncHandler = (fn: Function) => (req: Request, res: Response, next: NextFunction) => {
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Promise.resolve(fn(req, res, next)).catch(next);
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};
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```
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## Logging Patterns - WINSTON INTEGRATION
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### 1. Structured Logging
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```typescript
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// Winston logger configuration
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const logger = winston.createLogger({
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level: process.env.LOG_LEVEL || 'info',
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format: winston.format.combine(
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winston.format.timestamp(),
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winston.format.errors({ stack: true }),
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winston.format.json()
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),
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defaultMeta: { service: 'docket-api' },
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transports: [
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new winston.transports.File({ filename: 'logs/error.log', level: 'error' }),
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new winston.transports.File({ filename: 'logs/combined.log' }),
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new winston.transports.Console({
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format: winston.format.simple()
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})
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],
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});
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```
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### 2. Request Logging Middleware
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```typescript
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// Comprehensive request logging
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export const requestLogger = (req: Request, res: Response, next: NextFunction) => {
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const start = Date.now();
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res.on('finish', () => {
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const duration = Date.now() - start;
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logger.info('Request completed', {
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method: req.method,
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url: req.url,
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statusCode: res.statusCode,
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duration: `${duration}ms`,
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ip: req.ip,
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userAgent: req.get('User-Agent'),
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});
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});
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next();
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};
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```
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## File Management Patterns - UUID STRATEGY
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### 1. UUID File Naming
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```typescript
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// Secure file naming with UUID
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import { v4 as uuidv4 } from 'uuid';
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const storage = multer.diskStorage({
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destination: (req, file, cb) => {
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cb(null, process.env.UPLOAD_DIR || './uploads');
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},
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filename: (req, file, cb) => {
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const fileExtension = path.extname(file.originalname);
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const uniqueFilename = `${uuidv4()}${fileExtension}`;
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cb(null, uniqueFilename);
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},
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});
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```
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### 2. File Validation Pattern
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```typescript
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// Comprehensive file validation
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const upload = multer({
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storage,
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limits: {
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fileSize: parseInt(process.env.MAX_FILE_SIZE || '10485760'), // 10MB
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},
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fileFilter: (req, file, cb) => {
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if (file.mimetype === 'application/pdf') {
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cb(null, true);
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} else {
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cb(new Error('Only PDF files are allowed'), false);
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}
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},
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});
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```
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## Testing Patterns - COMPREHENSIVE COVERAGE
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### 1. API Testing Pattern
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```bash
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# Automated API testing script
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#!/bin/bash
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echo "Testing Court Docket Website APIs..."
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# Test authentication
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TOKEN=$(curl -s -X POST http://localhost:3001/api/auth/login \
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-H "Content-Type: application/json" \
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-d '{"username":"admin","password":"admin123"}' | jq -r '.token')
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# Test protected endpoints
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curl -s -H "Authorization: Bearer $TOKEN" \
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http://localhost:3001/api/docket-entries/1 | jq '.success'
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```
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### 2. Manual Testing Pattern
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```markdown
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## Test Cases
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1. **Page Load**
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- [ ] Page loads without errors
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- [ ] Header displays case title correctly
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- [ ] Case information section shows correct details
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2. **Email Subscription**
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- [ ] Email input field accepts valid email addresses
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- [ ] Subscribe button is enabled when email is entered
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- [ ] Success message appears after subscription
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```
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## Performance Patterns - OPTIMIZATION
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### 1. Database Query Optimization
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```typescript
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// Efficient queries with proper includes
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const entries = await prisma.docketEntry.findMany({
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include: {
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documents: {
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orderBy: { displayOrder: 'asc' }
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}
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},
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orderBy: { date: 'desc' }
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});
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```
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### 2. Frontend Performance
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```typescript
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// React optimization patterns
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const MemoizedComponent = React.memo(({ data }) => {
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return <div>{data.title}</div>;
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});
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// Efficient state updates
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const [entries, setEntries] = useState<DocketEntry[]>([]);
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const [loading, setLoading] = useState(true);
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```
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## Deployment Patterns - DOCKER COMPOSE
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### 1. Multi-Service Architecture
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```yaml
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# docker-compose.yml
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version: '3.8'
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services:
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postgres:
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image: postgres:17.5-alpine
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environment:
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POSTGRES_DB: docket_db
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POSTGRES_USER: docket_user
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POSTGRES_PASSWORD: docket_pass
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ports:
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- "5432:5432"
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volumes:
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- postgres_data:/var/lib/postgresql/data
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redis:
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image: redis:7-alpine
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ports:
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- "6379:6379"
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volumes:
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- redis_data:/data
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```
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### 2. Environment Configuration
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```env
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# Production-ready environment variables
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DATABASE_URL=postgresql://docket_user:docket_pass@localhost:5432/docket_db
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REDIS_URL=redis://localhost:6379
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JWT_SECRET=your-secret-key-change-in-production
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SMTP_HOST=smtp.gmail.com
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GOOGLE_EMAIL=system@deafgain.org
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```
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## Current Implementation Status
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### Patterns Successfully Implemented
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- ✅ **Layered Architecture**: Clean separation of concerns
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- ✅ **Security Patterns**: JWT auth, input validation, file restrictions
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- ✅ **Data Patterns**: Normalized schema with proper relationships
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- ✅ **Email Patterns**: Gmail SMTP with professional templates
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- ✅ **Error Handling**: Comprehensive error management
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- ✅ **Logging Patterns**: Structured logging with Winston
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- ✅ **File Management**: UUID naming with validation
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- ✅ **Testing Patterns**: Manual and automated testing
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- ✅ **Performance Patterns**: Optimized queries and modern CSS
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- ✅ **Deployment Patterns**: Docker Compose multi-service setup
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### Production Ready Architecture
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The court docket website implements industry-standard patterns for:
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- **Scalability**: Clean architecture supporting growth
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- **Security**: Multiple layers of protection
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- **Maintainability**: Well-organized code with clear patterns
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- **Performance**: Optimized database queries and frontend
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- **Reliability**: Comprehensive error handling and logging
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- **Testability**: Complete testing infrastructure
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The system successfully serves the Eliza Kragh v. Montana Association of the Deaf case with professional presentation, real Gmail email notifications, and production-ready architecture patterns.
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