# 📑 Realtime Collaboration - Documentation Index

**Objectif:** Centraliser toute la documentation sur le système de collaboration temps réel.

---

## 📚 DOCUMENTS DISPONIBLES

| Document | Taille | Temps Lecture | Usage | Lien |
|----------|--------|---------------|-------|------|
| **TL;DR Critique** | 3KB | 2 min | ⚡ Quick fixes urgents | [REALTIME_COLLAB_TLDR.md](./REALTIME_COLLAB_TLDR.md) |
| **Audit Complet** | 52KB | 30 min | 🔍 Analyse détaillée | [REALTIME_COLLAB_AUDIT.md](./REALTIME_COLLAB_AUDIT.md) |
| **Architecture** | 15KB | 15 min | 🏗️ Design complet | [docs/REALTIME_ARCHITECTURE.md](./docs/REALTIME_ARCHITECTURE.md) |
| **API Reference** | 25KB | 20 min | 📚 Endpoints + schemas | [docs/REFERENCE.md](./docs/REFERENCE.md) |

---

## 🚨 PAR OÙ COMMENCER?

### **Si vous avez 2 minutes:**
→ Lire **REALTIME_COLLAB_TLDR.md**
- 5 problèmes critiques
- Code minimal pour fix
- Checklist urgente

### **Si vous avez 30 minutes:**
→ Lire **REALTIME_COLLAB_AUDIT.md**
- Analyse complète architecture
- 13 problèmes HIGH/MEDIUM
- Plan d'action 3 sprints
- Tests requis

### **Si vous développez une feature:**
→ Lire **docs/REALTIME_ARCHITECTURE.md**
- Data flows (CRDT vs HTTP)
- Integration guides
- Code examples

### **Si vous debuggez une API:**
→ Lire **docs/REFERENCE.md**
- Tous les endpoints `/api/collab/*`
- Request/response schemas
- Error codes

---

## 📊 RÉSUMÉ PROBLÈMES IDENTIFIÉS

### **CRITIQUE (Fix < 1 jour)**

| # | Problème | Fichier | Impact | Status |
|---|----------|---------|--------|--------|
| 1 | Pas de validation ownership | `collab.controller.ts` | User A corrompt plan User B | 🔴 TODO |
| 2 | Pas de rate limiting | `collab.routes.ts` | Attaque DoS possible | 🔴 TODO |
| 3 | Payload 50x trop gros | `syncService.ts` | 360MB/h bandwidth | 🔴 TODO |
| 4 | IndexedDB bloque UI | `syncService.ts` | Freeze 50-100ms | 🔴 TODO |
| 5 | Device ID forgeable | `syncService.ts` | Usurpation identité | 🔴 TODO |

### **MEDIUM (Fix < 1 semaine)**

| # | Problème | Fichier | Impact | Status |
|---|----------|---------|--------|--------|
| 6 | Cognitive complexity 32 | `collab.service.ts` | Maintenabilité | 🟡 TODO |
| 7 | Nested ternary | `indexedDBService.ts` | Lisibilité | 🟡 TODO |
| 8 | 15 lint warnings | Multiple files | Code quality | 🟡 TODO |
| 9 | Pas de JSDoc | API publiques | Documentation | 🟡 TODO |
| 10 | 2 systèmes séparés | collab + sharing | Duplication code | 🟡 TODO |

---

## 🎯 PRIORISATION RECOMMANDÉE

### **Phase 1: SÉCURITÉ (Jour 1)**
```bash
Priority: 🔴 CRITIQUE
Effort: 15h (1 jour)
Impact: Blocage attaques + corruption données

Tasks:
- [x] Lire audit complet
- [ ] Implémenter validation ownership
- [ ] Activer rate limiting
- [ ] Sécuriser device ID
- [ ] Tests sécurité (100% pass)
- [ ] Deploy hotfix
```

### **Phase 2: PERFORMANCE (Jours 2-4)**
```bash
Priority: 🟠 HIGH
Effort: 24h (3 jours)
Impact: 50x bandwidth, 5x latency, +40% battery

Tasks:
- [ ] Compression diff (Y.encodeStateVector)
- [ ] IndexedDB workers (non-blocking)
- [ ] Redis pipeline (3x faster)
- [ ] Debounce sync (80% moins requests)
- [ ] Load test Artillery
- [ ] Benchmark avant/après
- [ ] Deploy staging
```

### **Phase 3: CONSOLIDATION (Jours 5-9)**
```bash
Priority: 🟡 MEDIUM
Effort: 40h (5 jours)
Impact: Code 40% plus court, moins bugs

Tasks:
- [ ] Créer module realtime unifié
- [ ] Migrer collab → realtime
- [ ] Migrer sharing → realtime
- [ ] Offline queue integration
- [ ] WebSocket optional
- [ ] E2E tests Playwright
- [ ] Documentation complète
- [ ] Deploy production
```

---

## 📈 MÉTRIQUES CIBLES

| Métrique | Avant | Après | Validation |
|----------|-------|-------|------------|
| **Sécurité** | 5 failles | 0 failles | SonarQube audit |
| **Bandwidth** | 360MB/h | <10MB/h | Chrome Network tab |
| **Latency P95** | 500ms | <100ms | Artillery load test |
| **UI Freeze** | 50-100ms | 0ms | Chrome Performance |
| **Battery** | 10s polling | 60s idle | Battery API |
| **Lint warnings** | 15 | 0 | `pnpm lint` |
| **Code duplication** | 40% | <10% | SonarQube |

---

## 🧪 COMMANDES TESTS

```bash
# Tests unitaires
pnpm test:collab

# Load test performance
pnpm test:load

# Tests sécurité
pnpm test:security

# Lint + type-check
pnpm lint && pnpm type-check

# Build complet
pnpm build

# Smoke test production
curl -X POST https://api.myroadtrip.com/api/collab/sync/test_plan \
  -H "Authorization: Bearer $TOKEN" \
  -d @test_crdt.bin
```

---

## 🔗 LIENS EXTERNES

| Ressource | Usage |
|-----------|-------|
| [Yjs Documentation](https://docs.yjs.dev/) | CRDT library |
| [Redis Pipeline](https://redis.io/docs/manual/pipelining/) | Performance optimization |
| [Web Workers API](https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API) | IndexedDB non-blocking |
| [Fastify Rate Limit](https://github.com/fastify/fastify-rate-limit) | Rate limiting plugin |
| [Artillery](https://www.artillery.io/docs) | Load testing tool |

---

## 📞 SUPPORT

### **Questions Techniques**
- Architecture: Voir `docs/REALTIME_ARCHITECTURE.md`
- API: Voir `docs/REFERENCE.md`
- Types: Voir `packages/types/src/collab.types.ts`

### **Bugs/Issues**
- Label: `module:realtime`
- Priority: `critical` pour sécurité

### **Performance Issues**
- Collecter traces: Chrome DevTools → Performance
- Load test: `pnpm test:load`
- Metrics: Grafana → "Realtime Collab" dashboard

---

## 📅 TIMELINE

```mermaid
gantt
    title Realtime Collab - Implementation Timeline
    dateFormat  YYYY-MM-DD
    section Phase 1: Sécurité
    Validation ownership    :a1, 2024-01-01, 2h
    Rate limiting          :a2, after a1, 1h
    Device ID secure       :a3, after a2, 2h
    Tests sécurité        :a4, after a3, 4h
    Deploy hotfix         :a5, after a4, 1h
    
    section Phase 2: Performance
    Compression diff      :b1, after a5, 4h
    IndexedDB workers     :b2, after b1, 6h
    Redis pipeline        :b3, after b2, 2h
    Load tests           :b4, after b3, 4h
    Deploy staging       :b5, after b4, 2h
    
    section Phase 3: Consolidation
    Module realtime      :c1, after b5, 16h
    Migration collab     :c2, after c1, 8h
    E2E tests           :c3, after c2, 8h
    Deploy production    :c4, after c3, 2h
```

---

## ✅ VALIDATION CHECKLIST

### **Avant Commit:**
- [ ] Code review complet
- [ ] Tests unitaires (100% pass)
- [ ] Lint: 0 warnings
- [ ] Type-check: 0 errors
- [ ] SonarQube: 0 critical/high

### **Avant Staging:**
- [ ] Load test Artillery (P95 < 100ms)
- [ ] Tests E2E Playwright (100% pass)
- [ ] Bandwidth < 10MB/h par user
- [ ] UI freeze: 0 occurrences

### **Avant Production:**
- [ ] Smoke tests prod (100% pass)
- [ ] Rollback plan documenté
- [ ] Monitoring alerts configurés
- [ ] Documentation à jour
- [ ] Équipe notifiée

---

## 🚀 QUICK START

```bash
# 1. Lire docs (5 min)
open REALTIME_COLLAB_TLDR.md

# 2. Run tests actuels
pnpm test:collab

# 3. Implémenter premier fix
# Voir section "Quick Fixes" dans TLDR

# 4. Valider
pnpm lint && pnpm type-check && pnpm test:collab

# 5. Commit
git add .
git commit -m "fix(collab): implement ownership validation"
```

---

## 📊 DASHBOARD STATUS

| Composant | Status | Tests | Coverage | Issues |
|-----------|--------|-------|----------|--------|
| **syncService.ts** | 🟡 | 45% | 60% | 3 HIGH |
| **collab.service.ts** | 🟡 | 30% | 50% | 4 HIGH |
| **sharingService.ts** | 🟢 | 80% | 85% | 1 MEDIUM |
| **useCollaboration.ts** | 🟢 | 70% | 75% | 0 |
| **collab.controller.ts** | 🔴 | 20% | 40% | 2 CRITICAL |

**Légende:**
- 🟢 Bon (>70% tests, <2 issues)
- 🟡 Moyen (40-70% tests, 2-5 issues)
- 🔴 Critique (<40% tests, >5 issues)

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**Dernière mise à jour:** 2024  
**Version:** 1.0  
**Maintainers:** Team Backend + Frontend

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**📌 PIN CE DOCUMENT** - Point d'entrée unique pour toute la documentation collaboration temps réel.
