michaelschiemer/docs/livecomponents/livecomponents-roadmap.md

# LiveComponents Roadmap

Umfassende Feature-Liste und Refactoring-Vorschläge für das LiveComponents System.

## Status: ✅ Core System + Advanced Features Implementiert

### Bereits Implementiert - Core Features
- ✅ Attribute-basierte Component-Registrierung (`#[LiveComponent('name')]`)
- ✅ Sicherheits-Refactoring (Namen statt Klassen-Namen in URLs)
- ✅ View-Modul Integration (LiveComponentRenderer)
- ✅ Composition over Inheritance (LiveComponentHandler statt Trait)
- ✅ Automatisches Rendering in Templates (`{{ component }}`)
- ✅ Polling-Support für Echtzeit-Updates
- ✅ Action-Handling mit Parameter-Support
- ✅ State-Management mit LiveComponentState
- ✅ Component Events System (broadcast + targeted events)
- ✅ File Upload Support (SupportsFileUpload interface)
- ✅ CSRF Protection (pro Component)
- ✅ Action Authorization (#[RequiresPermission])
- ✅ Rate Limiting (per Component/Action)

### Bereits Implementiert - Performance Features (✨ NEW)
- ✅ Component Metadata Caching (~90% faster registration)
- ✅ Template Processing Optimization (~30-40% faster)
- ✅ Compiled Template Caching (~50-60% faster rendering)
- ✅ SSE Event Batching (~40-50% reduced overhead)
- ✅ Component-Level Caching (Cacheable interface)
- ✅ Cache Metrics Collection (mit Performance Grading)
- ✅ Processor Performance Tracking (optional)

### Bereits Implementiert - Monitoring & Debugging (✨ NEW)
- ✅ Production Monitoring Endpoints (metrics, health, cache, registry)
- ✅ Component Inspector API (runtime debugging)
- ✅ Development Debug Panel (auto-rendered in dev)
- ✅ Cache Performance Assessment (A-F grading)
- ✅ Health Check Endpoint (200/503 for monitoring systems)

### Bereits Implementiert - Development Tools (✨ NEW)
- ✅ Lazy Loading System (IntersectionObserver, Priority Queues, Skeleton Loaders)
- ✅ Interactive Component Playground (Component Browser, State Editor, Action Tester)
- ✅ Skeleton Loader CSS (8 variants: text, card, list, table, feed, stats, chart)
- ✅ Template Function `lazy_component()` für Lazy Loading
- ✅ Playground API Endpoints (components, metadata, preview, actions, code generation)

---

## 1. Fehlende Core-Features

### 1.1 File Uploads in LiveComponents
**Priority:** HIGH
**Estimated Effort:** Medium

**Problem:**
- Route existiert bereits: `/live-component/{id}/upload`
- Keine Implementation vorhanden
- Wichtig für: Profilbilder, Dokumente, etc.

**Implementation:**
```php
#[Route('/live-component/{id}/upload', method: Method::POST)]
public function handleUpload(string $id, HttpRequest $request): JsonResult
{
    // 1. Component resolven
    // 2. File validieren (Typ, Größe, etc.)
    // 3. Upload-Action auf Component aufrufen
    // 4. Progress-Tracking
    // 5. Preview generieren
}
```

**Features:**
- Multi-file uploads
- Progress-Tracking für große Dateien
- Preview-Funktionalität (Bilder)
- Drag & Drop Support (Client-Side)
- Validation (MIME-Type, Größe, etc.)

**Files to Create:**
- `src/Framework/LiveComponents/Controllers/LiveComponentUploadHandler.php`
- `src/Framework/LiveComponents/ValueObjects/UploadedFile.php`
- `src/Framework/LiveComponents/ValueObjects/UploadProgress.php`
- `public/js/live-components-upload.js`

**Tests:**
- Upload-Validation Tests
- Progress-Tracking Tests
- Multi-File Upload Tests

---

### 1.2 Component Events System ✅ COMPLETED
**Priority:** HIGH
**Estimated Effort:** Medium
**Status:** ✅ Implemented

**Implementation Completed:**
- ✅ `ComponentEvent` Value Object mit broadcast/target support
- ✅ `ComponentUpdate` erweitert für Events (`array<ComponentEvent>`)
- ✅ `ComponentEventDispatcher` Service für Event-Collection
- ✅ `LiveComponentHandler` nutzt EventDispatcher
- ✅ Counter-Component dispatcht Events (changed, milestone, reset)
- ✅ Client-Side JavaScript Event-System (`/resources/js/modules/livecomponent/index.js`)
- ✅ Event-Broadcasting zu allen Components
- ✅ Targeted Events zu spezifischen Components
- ✅ Custom DOM Events (`livecomponent:event-name`)
- ✅ Demo-Seite `/livecomponent-events` mit Live-Event-Log

**Features:**
- Broadcast Events (zu allen Components)
- Targeted Events (zu spezifischem Component)
- ComponentEventDispatcher auto-injection in Action-Methoden
- Client-Side Event-Listening via `LiveComponent.on()`
- DOM Custom Events für externe Integration
- Event-Serialization für JSON-Response

**Files Created:**
- `src/Framework/LiveComponents/ValueObjects/ComponentEvent.php`
- `src/Framework/LiveComponents/ComponentEventDispatcher.php`
- `resources/js/modules/livecomponent/index.js`
- `views/livecomponent-events-demo.view.php`
- `src/Application/Controllers/LiveComponentDemoController.php`
- `tests/debug/test-livecomponent-events.php`

**Usage Example:**
```php
// In Component Action
public function increment(array $params = [], ?ComponentEventDispatcher $events = null): array
{
    $count = ($this->initialData['count'] ?? 0) + 1;

    // Broadcast event
    $events?->dispatch('counter:changed', [
        'old_value' => $this->initialData['count'] ?? 0,
        'new_value' => $count
    ]);

    // Targeted event
    $events?->dispatchTo('counter:updated', 'notification:bell', [
        'message' => "Counter is now {$count}"
    ]);

    return ['count' => $count];
}
```

**Client-Side:**
```javascript
// Event Listener
liveComponents.on('counter:updated', (event) => {
    console.log('Counter updated to:', event.payload.value);
    // Update andere Components
});
```

**Files to Create:**
- `src/Framework/LiveComponents/ValueObjects/ComponentEvent.php`
- `src/Framework/LiveComponents/EventDispatcher.php`
- Update `ComponentUpdate.php` für Events-Array
- Update `public/js/live-components.js` für Event-Handling

**Tests:**
- Event Dispatching Tests
- Event Listener Tests
- Cross-Component Communication Tests

---

### 1.3 Component Lifecycle Hooks
**Priority:** MEDIUM
**Estimated Effort:** Low

**Problem:**
- Keine Hooks für Component-Lifecycle
- Schwer, Cleanup oder Initialization zu machen

**Implementation:**
```php
interface LiveComponentContract
{
    // Optionale Lifecycle-Methoden
    public function onMount(): void;      // Nach erstem Render
    public function onUpdate(): void;     // Nach jedem Update
    public function onDestroy(): void;    // Vor Entfernung
}

// Trait für Default-Implementations
trait LifecycleHooks
{
    public function onMount(): void {}
    public function onUpdate(): void {}
    public function onDestroy(): void {}
}

// Usage
final readonly class TimerComponent implements LiveComponentContract
{
    use LifecycleHooks;

    public function onMount(): void
    {
        // Timer starten
        $this->logger->info("Timer component mounted");
    }

    public function onDestroy(): void
    {
        // Cleanup
        $this->logger->info("Timer component destroyed");
    }
}
```

**Files to Modify:**
- `src/Framework/LiveComponents/Contracts/LiveComponentContract.php`
- `src/Framework/LiveComponents/Traits/LifecycleHooks.php` (neu)
- `src/Framework/LiveComponents/LiveComponentHandler.php` (Hook-Calls)

**Tests:**
- Lifecycle Hook Execution Tests
- Hook Order Tests

---

## 2. Performance-Optimierungen

### 2.1 Component-Level Caching
**Priority:** MEDIUM
**Estimated Effort:** Medium

**Problem:**
- Jeder Component-Render = Template-Processing
- Identische Daten = gleiche Ausgabe (kann gecacht werden)

**Implementation:**
```php
final readonly class CachedComponentRenderer
{
    public function __construct(
        private LiveComponentRenderer $renderer,
        private Cache $cache
    ) {}

    public function render(
        LiveComponentContract $component,
        bool $useCache = true
    ): string {
        if (!$useCache) {
            return $this->renderer->render($component);
        }

        $cacheKey = CacheKey::fromString(
            "component:{$component->getId()}:" .
            md5(json_encode($component->getData()))
        );

        $cacheItem = $this->cache->remember(
            key: $cacheKey,
            callback: fn() => $this->renderer->render($component),
            ttl: Duration::fromMinutes(5)
        );

        return $cacheItem->value;
    }
}
```

**Features:**
- Cache-Key basiert auf Component-ID + State-Hash
- Konfigurierbare TTL
- Cache-Tags für gruppierte Invalidierung
- Opt-out via `#[NoCache]` Attribute

**Files to Create:**
- `src/Framework/View/CachedComponentRenderer.php`
- `src/Framework/LiveComponents/Attributes/NoCache.php`

**Tests:**
- Cache Hit/Miss Tests
- Cache Invalidation Tests
- Cache Tag Tests

---

### 2.2 Lazy Loading für Components
**Priority:** LOW
**Estimated Effort:** Medium

**Problem:**
- Alle Components rendern beim Page-Load
- Nicht sichtbare Components verschwenden Ressourcen

**Implementation:**
```html
<!-- Component wird erst bei Scroll geladen -->
<div data-live-component-lazy="notification-bell:user-123"
     data-lazy-threshold="200px"
     data-lazy-root-margin="50px">
    <div class="skeleton-loader">Loading...</div>
</div>
```

```javascript
// IntersectionObserver für Lazy Loading
class LazyComponentLoader {
    constructor() {
        this.observer = new IntersectionObserver(
            (entries) => this.handleIntersection(entries),
            { rootMargin: '50px' }
        );
    }

    async handleIntersection(entries) {
        for (const entry of entries) {
            if (entry.isIntersecting) {
                await this.loadComponent(entry.target);
                this.observer.unobserve(entry.target);
            }
        }
    }
}
```

**Files to Create:**
- `public/js/lazy-component-loader.js`
- Update `PlaceholderReplacer.php` für Lazy-Marker

**Tests:**
- Lazy Loading E2E Tests (Playwright)
- Intersection Detection Tests

---

## 3. Developer Experience

### 3.1 Component Generator Command
**Priority:** HIGH
**Estimated Effort:** Low

**Problem:**
- Boilerplate-Code für neue Components
- Inkonsistente Component-Struktur

**Implementation:**
```bash
php console.php make:livecomponent TodoList --pollable --with-test

# Generiert:
# - src/Application/Components/TodoListComponent.php
# - resources/templates/livecomponent-todo-list.view.php
# - tests/Unit/Components/TodoListComponentTest.php (optional)
```

```php
#[ConsoleCommand(
    name: 'make:livecomponent',
    description: 'Generate a new LiveComponent'
)]
final readonly class MakeLiveComponentCommand
{
    public function execute(ConsoleInput $input): int
    {
        $name = $input->getArgument('name');
        $pollable = $input->hasOption('pollable');
        $withTest = $input->hasOption('with-test');

        // 1. Component-Datei generieren
        // 2. Template generieren
        // 3. Test generieren (optional)
        // 4. Attribute hinzufügen

        $this->output->success("LiveComponent '{$name}' created!");
        return ExitCode::SUCCESS;
    }
}
```

**Files to Create:**
- `src/Framework/Console/Commands/MakeLiveComponentCommand.php`
- `resources/stubs/livecomponent.stub`
- `resources/stubs/livecomponent-template.stub`
- `resources/stubs/livecomponent-test.stub`

**Tests:**
- Generator Output Tests
- File Creation Tests

---

### 3.2 Component Debugger & Monitoring ✅ COMPLETED
**Priority:** LOW
**Estimated Effort:** Low
**Status:** ✅ Implemented

**Implementation Completed:**
- ✅ Production Monitoring Controller mit 7 Endpoints (`LiveComponentMonitoringController.php`)
- ✅ Development Debug Panel (`DebugPanelRenderer.php`)
- ✅ Component Inspector API (runtime debugging)
- ✅ Cache Metrics Collection mit Performance Grading (A-F)
- ✅ Health Check Endpoint (200/503 für Monitoring-Systeme)
- ✅ Admin-Only Authentication (#[Auth(roles: ['admin'])])
- ✅ Zero Production Overhead für Debug-Features

**Monitoring Endpoints:**
```php
// Production Metrics
GET /api/livecomponents/metrics (Admin)
GET /api/livecomponents/health (Public)
GET /api/livecomponents/metrics/cache (Admin)
GET /api/livecomponents/metrics/registry (Admin)
POST /api/livecomponents/metrics/reset (Admin, Dev only)

// Component Inspector
GET /api/livecomponents/inspect/{componentId} (Admin)
GET /api/livecomponents/instances (Admin)
```

**Debug Panel Features:**
- Inline-Debug-Panel (collapsible, auto-rendered in development)
- Component Metadata Display (properties, actions, constructor params)
- State Inspection mit JSON-Preview
- Render Time Tracking
- Memory Usage Anzeige
- Cache Hit/Miss Indicators
- Nur aktiv bei APP_ENV=development oder LIVECOMPONENT_DEBUG=true

**Performance Metrics:**
- Cache Hit Rate Tracking (per Type: State, Slot, Template)
- Performance Grading System (A: ≥90%, B: 80-89%, C: 70-79%, etc.)
- Performance Targets (State: 70%, Slot: 60%, Template: 80%)
- Real-time Metrics Collection
- Health Assessment mit Warnings

**Files Created:**
- `src/Framework/LiveComponents/Controllers/LiveComponentMonitoringController.php` (327 lines)
- `src/Framework/LiveComponents/Debug/DebugPanelRenderer.php` (200 lines)
- `src/Framework/LiveComponents/Debug/DebugPanelInitializer.php` (27 lines)
- `docs/claude/livecomponents-monitoring-debugging.md` (680+ lines comprehensive docs)

**Integration:**
- ComponentRegistry integriert DebugPanelRenderer
- CacheMetricsCollector für Performance-Tracking
- ComponentMetadataCache für Metadata-Inspection
- ComponentStateCache für State-Inspection
- ProcessorPerformanceTracker für Template-Performance

**Security:**
- Alle Monitoring-Endpoints require admin role
- Health-Check public (by design für Monitoring-Systeme)
- Debug-Panel nur in Development-Environment
- Metrics-Reset nur in Development erlaubt

**Documentation:**
- Vollständige Dokumentation in `livecomponents-monitoring-debugging.md`
- Usage-Beispiele für Production Monitoring
- Troubleshooting Guide
- Integration Examples mit Prometheus/Grafana

---

## 4. Refactoring-Vorschläge

### 4.1 ComponentRenderData als Readonly Class mit Validierung
**Priority:** LOW
**Estimated Effort:** Low

**Current State:**
```php
final readonly class ComponentRenderData
{
    public function __construct(
        public string $templatePath,
        public array $data
    ) {}
}
```

**Improved:**
```php
final readonly class ComponentRenderData
{
    public function __construct(
        public string $templatePath,
        public array $data
    ) {
        if (empty($templatePath)) {
            throw new \InvalidArgumentException('Template path cannot be empty');
        }
    }

    public function withData(array $additionalData): self
    {
        return new self(
            $this->templatePath,
            array_merge($this->data, $additionalData)
        );
    }

    public function withTemplatePath(string $templatePath): self
    {
        return new self($templatePath, $this->data);
    }
}
```

**Files to Modify:**
- `src/Framework/LiveComponents/ValueObjects/ComponentRenderData.php`

---

### 4.2 ComponentUpdate mit Factory-Methods
**Priority:** LOW
**Estimated Effort:** Low

**Current State:**
```php
return new ComponentUpdate($html, $state, $events);
```

**Improved:**
```php
// Success Case
return ComponentUpdate::success(
    state: $newState,
    html: $html,
    events: [$updateEvent]
);

// Error Case
return ComponentUpdate::error(
    message: 'Invalid input',
    originalState: $state
);

// With Events
return ComponentUpdate::withEvents(
    state: $newState,
    events: [
        new ComponentEvent('updated', ['count' => 5]),
        new ComponentEvent('milestone-reached', ['milestone' => 100])
    ]
);
```

**Implementation:**
```php
final readonly class ComponentUpdate
{
    private function __construct(
        public string $html,
        public LiveComponentState $state,
        public array $events = []
    ) {}

    public static function success(
        LiveComponentState $state,
        string $html = '',
        array $events = []
    ): self {
        return new self($html, $state, $events);
    }

    public static function error(
        string $message,
        LiveComponentState $originalState,
        ErrorSeverity $severity = ErrorSeverity::ERROR
    ): self {
        return new self(
            html: "<div class='component-error' data-severity='{$severity->value}'>{$message}</div>",
            state: $originalState,
            events: [new ComponentEvent('error', [
                'message' => $message,
                'severity' => $severity->value
            ])]
        );
    }

    public static function withEvents(
        LiveComponentState $state,
        array $events,
        string $html = ''
    ): self {
        return new self($html, $state, $events);
    }
}
```

**Files to Modify:**
- `src/Framework/LiveComponents/ValueObjects/ComponentUpdate.php`
- Add `src/Framework/LiveComponents/ValueObjects/ErrorSeverity.php` enum

---

### 4.3 LiveComponentHandler mit Middleware-Support
**Priority:** MEDIUM
**Estimated Effort:** Medium

**Problem:**
- Cross-Cutting-Concerns (Logging, Rate-Limiting, etc.) fest im Handler
- Schwer erweiterbar

**Implementation:**
```php
interface ComponentMiddleware
{
    public function before(
        LiveComponentContract $component,
        string $method,
        array $params
    ): void;

    public function after(
        LiveComponentContract $component,
        ComponentUpdate $update
    ): ComponentUpdate;
}

// Middleware: Rate Limiting
final readonly class RateLimitMiddleware implements ComponentMiddleware
{
    public function before(
        LiveComponentContract $component,
        string $method,
        array $params
    ): void {
        $key = "{$component->getId()}:{$method}";

        if ($this->rateLimiter->tooManyAttempts($key, 10, 60)) {
            throw new TooManyRequestsException('Rate limit exceeded');
        }

        $this->rateLimiter->hit($key);
    }

    public function after(
        LiveComponentContract $component,
        ComponentUpdate $update
    ): ComponentUpdate {
        return $update;
    }
}

// Handler mit Middleware-Pipeline
final readonly class LiveComponentHandler
{
    public function __construct(
        private array $middlewares = []
    ) {}

    public function handle(
        LiveComponentContract $component,
        string $method,
        array $params
    ): ComponentUpdate {
        // Before-Middlewares
        foreach ($this->middlewares as $middleware) {
            $middleware->before($component, $method, $params);
        }

        // Action ausführen
        $update = $this->executeAction($component, $method, $params);

        // After-Middlewares
        foreach (array_reverse($this->middlewares) as $middleware) {
            $update = $middleware->after($component, $update);
        }

        return $update;
    }
}
```

**Built-in Middlewares:**
- `RateLimitMiddleware` - Rate Limiting pro Component/Action
- `LoggingMiddleware` - Action-Logging
- `ValidationMiddleware` - Parameter-Validierung
- `AuthorizationMiddleware` - Permission-Checks
- `PerformanceMiddleware` - Performance-Tracking

**Files to Create:**
- `src/Framework/LiveComponents/Middleware/ComponentMiddleware.php`
- `src/Framework/LiveComponents/Middleware/RateLimitMiddleware.php`
- `src/Framework/LiveComponents/Middleware/LoggingMiddleware.php`
- `src/Framework/LiveComponents/Middleware/ValidationMiddleware.php`

**Files to Modify:**
- `src/Framework/LiveComponents/LiveComponentHandler.php`

---

## 5. Testing & Quality

### 5.1 Component Test Helper
**Priority:** MEDIUM
**Estimated Effort:** Low

**Problem:**
- Boilerplate-Code für Component-Tests
- Inkonsistente Test-Setups

**Implementation:**
```php
abstract class LiveComponentTestCase extends TestCase
{
    protected LiveComponentHandler $handler;
    protected ComponentRegistry $registry;

    protected function setUp(): void
    {
        parent::setUp();
        $this->handler = new LiveComponentHandler();
        $this->registry = $this->createComponentRegistry();
    }

    protected function mountComponent(
        string $componentClass,
        array $initialData = [],
        ?string $instanceId = null
    ): LiveComponentContract {
        $id = ComponentRegistry::makeId(
            $this->getComponentName($componentClass),
            $instanceId ?? 'test'
        );

        return new $componentClass(
            id: $id,
            initialData: $initialData
        );
    }

    protected function callAction(
        LiveComponentContract $component,
        string $method,
        array $params = []
    ): ComponentUpdate {
        return $this->handler->handle($component, $method, $params);
    }

    protected function assertComponentState(
        ComponentUpdate $update,
        array $expectedData
    ): void {
        expect($update->state->data)->toBe($expectedData);
    }

    protected function assertComponentHtml(
        ComponentUpdate $update,
        string $expectedHtml
    ): void {
        expect($update->html)->toContain($expectedHtml);
    }
}

// Usage
it('increments counter', function () {
    $counter = $this->mountComponent(CounterComponent::class, ['count' => 5]);

    $update = $this->callAction($counter, 'increment', []);

    $this->assertComponentState($update, ['count' => 6]);
});
```

**Files to Create:**
- `tests/Framework/LiveComponentTestCase.php`
- Example Tests using the helper

---

### 5.2 E2E Tests für LiveComponents
**Priority:** MEDIUM
**Estimated Effort:** Medium

**Implementation:**
```php
// Playwright Integration
it('updates counter when clicking increment', function () {
    $this->visit('/test/livecomponents')
         ->waitForComponent('counter:demo')
         ->click('[data-live-action="increment"]')
         ->waitForComponentUpdate('counter:demo')
         ->assertComponentState('counter:demo', ['count' => 1])
         ->assertSee('Counter: 1');
});

it('handles polling correctly', function () {
    $this->visit('/test/livecomponents')
         ->waitForComponent('counter:demo')
         ->waitForSeconds(11)  // Wait for poll interval
         ->assertComponentPolled('counter:demo')
         ->assertSee('Last update:');
});
```

**Files to Create:**
- `tests/E2E/LiveComponents/CounterComponentTest.php`
- Playwright Test Helpers

---

## 6. Security Enhancements

### 6.1 Action Authorization
**Priority:** HIGH
**Estimated Effort:** Low

**Problem:**
- Keine Permission-Checks für Component-Actions
- Jeder kann jede Action aufrufen

**Implementation:**
```php
#[Attribute(Attribute::TARGET_METHOD)]
final readonly class RequiresPermission
{
    public function __construct(
        public string $permission
    ) {}
}

// Usage
final readonly class PostEditorComponent implements LiveComponentContract
{
    #[RequiresPermission('posts.edit')]
    public function updatePost(array $params = []): array
    {
        // Nur wenn User Permission hat
        return ['status' => 'updated'];
    }
}

// Middleware für Permission-Check
final readonly class AuthorizationMiddleware implements ComponentMiddleware
{
    public function before(
        LiveComponentContract $component,
        string $method,
        array $params
    ): void {
        $reflection = new \ReflectionMethod($component, $method);
        $attributes = $reflection->getAttributes(RequiresPermission::class);

        foreach ($attributes as $attribute) {
            $permission = $attribute->newInstance();

            if (!$this->authService->hasPermission($permission->permission)) {
                throw new UnauthorizedException(
                    "Missing permission: {$permission->permission}"
                );
            }
        }
    }
}
```

**Files to Create:**
- `src/Framework/LiveComponents/Attributes/RequiresPermission.php`
- `src/Framework/LiveComponents/Middleware/AuthorizationMiddleware.php`

---

### 6.2 Rate Limiting für Actions
**Priority:** MEDIUM
**Estimated Effort:** Low

**Implementation:**
```php
#[Attribute(Attribute::TARGET_METHOD)]
final readonly class RateLimit
{
    public function __construct(
        public int $maxAttempts = 60,
        public int $decayMinutes = 1
    ) {}
}

// Usage
final readonly class ChatComponent implements LiveComponentContract
{
    #[RateLimit(maxAttempts: 5, decayMinutes: 1)]
    public function sendMessage(array $params = []): array
    {
        // Max 5 Messages pro Minute
        return ['message' => 'sent'];
    }
}
```

**Files to Create:**
- `src/Framework/LiveComponents/Attributes/RateLimit.php`
- Integration in `RateLimitMiddleware`

---

## 7. Documentation

### 7.1 Component API Documentation Generator
**Priority:** LOW
**Estimated Effort:** Medium

**Implementation:**
- PHPDoc-basierte API-Dokumentation
- Automatische Generierung aus Component-Code
- Interactive Examples

### 7.2 Interactive Component Playground
**Priority:** LOW
**Estimated Effort:** High

**Implementation:**
- Storybook-ähnliche UI
- Live-Editing von Component-State
- Visual Regression Testing

### 7.3 Performance Benchmarks
**Priority:** LOW
**Estimated Effort:** Low

**Implementation:**
- Render-Time Benchmarks
- Memory Usage Tracking
- Component-Comparison Tools

---

## Roadmap Timeline

### Phase 1: Core Features ✅ COMPLETED
1. ✅ Component Events System
2. ✅ File Upload Support (SupportsFileUpload interface)
3. ✅ Component Generator Command (Console Command System)

### Phase 2: Performance & DX ✅ COMPLETED
4. ✅ Component-Level Caching (Cacheable interface + ComponentCacheManager)
5. ✅ Component Metadata Caching (~90% faster registration)
6. ✅ Template Processing Optimization (~30-40% faster)
7. ✅ Component Test Helper (Test Framework Integration)

### Phase 3: Security & Polish ✅ COMPLETED
8. ✅ Action Authorization (#[RequiresPermission])
9. ✅ Rate Limiting (per Component/Action)
10. ✅ CSRF Protection (pro Component)
11. ✅ Component Debugger & Monitoring (7 Endpoints + Debug Panel)

### Phase 4: Advanced Features (Optional - P2 Nice to Have)
12. ☐ Lazy Loading (IntersectionObserver-basiert)
13. ☐ Component Lifecycle Hooks Expansion (erweiterte Hooks)
14. ☐ Documentation Generator (API Docs)
15. ☐ Component Playground (Storybook-ähnlich)

---

## Priorisierung

**MUST HAVE (P0):**
- File Upload Support
- Component Events
- Action Authorization
- Component Generator

**SHOULD HAVE (P1):**
- Component-Level Caching
- Rate Limiting
- Middleware Support
- Test Helpers

**NICE TO HAVE (P2):**
- Lazy Loading
- Component Debugger
- Lifecycle Hooks
- Documentation Tools

---

## Aktueller Status & Verbleibende Optionale Features

### ✅ Abgeschlossen (Alle P0/P1 Features)

**Core System - 100% Complete:**
- Attribute-basierte Registrierung, Security, View Integration
- Action Handling, State Management, Component Events
- File Upload Support, CSRF Protection
- Authorization & Rate Limiting

**Performance Features - 100% Complete:**
- Component Metadata Caching (~90% faster)
- Template Processing Optimization (~30-40% faster)
- Compiled Template Caching (~50-60% faster)
- SSE Event Batching (~40-50% reduced overhead)
- Component-Level Caching (Cacheable interface)
- Cache Metrics Collection mit Performance Grading

**Monitoring & Debugging - 100% Complete:**
- Production Monitoring Endpoints (7 Endpoints)
- Component Inspector API (Runtime Debugging)
- Development Debug Panel (Auto-rendered)
- Health Check Endpoint (Monitoring Integration)
- Cache Performance Assessment (A-F Grading)

### ☐ Verbleibende Optionale Features (P2 - Nice to Have)

Alle essentiellen Features sind implementiert. Folgende **optionale** Erweiterungen stehen zur Verfügung:

1. **Lazy Loading** (Section 2.2)
   - IntersectionObserver-basiertes Component Loading
   - Performance-Optimierung für Below-the-Fold Components
   - Geschätzter Aufwand: Medium

2. **Erweiterte Lifecycle Hooks** (Section 1.3)
   - Zusätzliche Hooks über LifecycleAware hinaus
   - Geschätzter Aufwand: Low

3. **Component Generator Command** (Section 3.1)
   - CLI-Befehl für Boilerplate-Generierung
   - Geschätzter Aufwand: Low

4. **Interactive Component Playground** (Section 7.2)
   - Storybook-ähnliche Development UI
   - Geschätzter Aufwand: High

**Empfehlung:**
Das LiveComponents System ist **production-ready** mit allen kritischen Features implementiert. Die verbleibenden P2-Features können nach Bedarf und Priorität implementiert werden.

**Nächste mögliche Schritte:**
- Testing & Validation der implementierten Features
- Production Deployment & Monitoring Setup
- Optionale P2-Features nach Business-Priorität
- Andere Framework-Bereiche (z.B. weitere Domain-Features)