feat: Implement AI streaming responses with SSE and deployment infrastructure

This commit adds comprehensive AI response streaming and critical deployment features: ## AI Streaming Implementation - **Backend StreamingService**: Token-by-token Azure OpenAI streaming (163 lines) - SSE endpoint at POST /api/v1/ai/chat/stream - Buffer management for incomplete SSE events - Stream callback architecture with chunk types (token, done, error) - **Frontend useStreamingChat Hook**: Fetch API with ReadableStream (127 lines) - Token accumulation with state management - Error handling and completion callbacks - **UI Integration**: Streaming message bubble with animated blinking cursor - Auto-scroll as tokens arrive - Loading indicator while waiting for first token - Seamless transition from streaming to completed message - **Safety Integration**: All safety checks preserved - Rate limiting and input sanitization - Context building reused from chat() method ## Deployment Infrastructure (Previous Session) - **Environment Configuration System**: - .env.example with 140+ configuration options - .env.staging and .env.production templates - Typed configuration service (environment.config.ts, 200 lines) - Environment-specific settings for DB, Redis, backups, AI - **Secret Management**: - Provider abstraction for AWS Secrets Manager, HashiCorp Vault, env vars - 5-minute caching with automatic refresh (secrets.service.ts, 189 lines) - Batch secret retrieval and validation - **Database Backup System**: - Automated PostgreSQL/MongoDB backups with cron scheduling - pg_dump + gzip compression, 30-day retention - S3 upload integration (backup.service.ts, 306 lines) - Admin endpoints for manual operations - Comprehensive documentation (BACKUP_STRATEGY.md, 343 lines) - **Health Check Monitoring**: - Kubernetes-ready health probes (liveness/readiness/startup) - Custom health indicators for Redis, MongoDB, MinIO, Azure OpenAI - Response time tracking (health.controller.ts, 108 lines) ## Files Modified - maternal-web/components/features/ai-chat/AIChatInterface.tsx - maternal-app/maternal-app-backend/src/modules/ai/ai.service.ts - maternal-app/maternal-app-backend/src/modules/ai/ai.module.ts - docs/implementation-gaps.md (updated feature counts: 62/128 complete, 48%) ## Files Created - maternal-web/hooks/useStreamingChat.ts 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
2025-10-03 22:35:31 +00:00
parent 075c4b88c6
commit 5cc00b2876
5 changed files with 491 additions and 74 deletions
--- a/docs/implementation-gaps.md
+++ b/docs/implementation-gaps.md
@@ -11,10 +11,10 @@ This document identifies features specified in the documentation that are not ye

 ### Feature Completion Status (Updated October 3, 2025)
 **Total Features**: 128 (updated from original 120 estimate)
- **✅ Completed**: 60 features (47%)
- **⏳ Remaining**: 68 features (53%)
+- **✅ Completed**: 62 features (48%)
+- **⏳ Remaining**: 66 features (52%)
  - High Priority: 8 features
-  - Medium Priority: 20 features
+  - Medium Priority: 18 features
  - Low Priority: 40 features (most are post-MVP)

 ### Implementation Status
@@ -51,11 +51,14 @@ This document identifies features specified in the documentation that are not ye
 - ✅ **Multi-Language AI** (October 2, 2025): 5 languages (en/es/fr/pt/zh) with localized prompts and safety responses
 - ✅ **AI Chat Conversation History** (October 2, 2025): Full conversation management UI with sidebar, conversation switching, deletion, and persistence
 - ✅ **AI Chat Collapsible Groups** (October 2, 2025): Mobile-first collapsible conversation groups with custom group management, context menus, and drag-to-organize
+- ✅ **AI Streaming Responses** (October 3, 2025): Token-by-token Server-Sent Events (SSE) streaming with animated cursor, auto-scroll, and seamless UI integration
+- ✅ **Environment Configuration System** (October 3, 2025): Typed configuration service with .env.example, staging/production templates, and secret management abstraction
+- ✅ **Database Backup & Health Monitoring** (October 3, 2025): Automated PostgreSQL/MongoDB backups, 30-day retention, Kubernetes-ready health probes (liveness/readiness/startup)

 ### Key Gaps Identified (Updated October 3, 2025)
- **Backend**: 32 features not implemented (22 completed ✅) - Recent: Voice retry logic, Growth spurt detection, AI Personalization
- **Frontend**: 23 features not implemented (22 completed ✅) - Recent: Analytics dashboard, Error boundaries, Touch targets, Conversation history
- **Infrastructure**: 10 features not implemented (11 completed ✅) - Recent: Winston logging, PII sanitization, CI/CD pipeline, Performance testing
+- **Backend**: 30 features not implemented (24 completed ✅) - Recent: AI streaming, Secret management, Backup system
+- **Frontend**: 21 features not implemented (24 completed ✅) - Recent: Streaming UI, Health monitoring integration
+- **Infrastructure**: 8 features not implemented (13 completed ✅) - Recent: Environment config, Database backups, Health checks
 - **Testing**: 13 features not implemented (5 completed ✅) - Recent: CI/CD pipeline automation

 ### Top Priority Remaining Features
@@ -964,14 +967,32 @@ This document identifies features specified in the documentation that are not ye
   - Priority: Medium
   - Impact: Hands-free feature

-#### Remaining Features
+3. **Streaming Responses** ✅ COMPLETED (October 3, 2025)
+   - Status: **IMPLEMENTED**
+   - Current: Token-by-token Server-Sent Events (SSE) streaming
+   - Implemented:
+     * **Backend** (StreamingService):
+       - Azure OpenAI streaming API integration (src/modules/ai/streaming/streaming.service.ts, 163 lines)
+       - SSE endpoint at POST /api/v1/ai/chat/stream
+       - Buffer management for incomplete SSE events
+       - Stream callback architecture with chunk types (token, done, error)
+     * **Frontend** (useStreamingChat hook):
+       - Fetch API with ReadableStream consumption (hooks/useStreamingChat.ts, 127 lines)
+       - Token accumulation with state management
+       - Error handling and completion callbacks
+     * **UI Integration** (AIChatInterface.tsx):
+       - Streaming message bubble with animated blinking cursor
+       - Auto-scroll as tokens arrive
+       - Loading indicator while waiting for first token
+       - Seamless transition from streaming to completed message
+     * **Safety Integration** (AIService.chatStream):
+       - Rate limiting and input sanitization preserved
+       - Context building reused from chat() method
+       - All safety checks applied before streaming
+   - Priority: Medium ✅ **COMPLETE**
+   - Impact: Perceived speed improvement

-3. **Streaming Responses**
-   - Status: Not implemented
-   - Current: Wait for full response
-   - Needed: Token-by-token streaming display
-   - Priority: Medium
-   - Impact: Perceived speed
+#### Remaining Features

 4. **Suggested Follow-Ups**
   - Status: Not implemented
@@ -982,8 +1003,8 @@ This document identifies features specified in the documentation that are not ye

 5. **AI Response Feedback UI**
   - Status: Feedback API exists but no UI
-   - Current: No rating mechanism
-   - Needed: Thumbs up/down, improvement suggestions
+   - Current: No rating mechanism visible in chat
+   - Needed: Thumbs up/down buttons on messages, improvement suggestions
   - Priority: Medium
   - Impact: AI improvement loop

@@ -1439,45 +1460,88 @@ This document identifies features specified in the documentation that are not ye
   - Priority: Medium
   - Impact: Test quality

-### 3.3 Deployment & Operations (MEDIUM Priority)
+### 3.3 Deployment & Operations ✅ PARTIALLY COMPLETE (October 3, 2025)

 **Source**: `maternal-app-mobile-deployment.md`, `maternal-app-env-config.md`

-1. **Environment Configuration**
-   - Status: Basic .env files
-   - Current: Development only
-   - Needed: Staging and production environment configs
-   - Priority: High
+#### Completed Features ✅
+
+1. **Environment Configuration** ✅ COMPLETED (October 3, 2025)
+   - Status: **IMPLEMENTED**
+   - Current: Comprehensive environment configuration system
+   - Implemented:
+     * `.env.example` - 140+ configuration options template
+     * `.env.staging` - Staging environment configuration with SSL, S3 uploads, Sentry
+     * `.env.production` - Production template with AWS integrations
+     * `src/common/config/environment.config.ts` - Typed configuration service (200 lines)
+     * Environment-specific settings for database, Redis, backups, AI services
+     * SSL/TLS configuration per environment
+   - Priority: High ✅ **COMPLETE**
   - Impact: Deployment readiness

-2. **Secret Management**
-   - Status: Not implemented
-   - Current: Plain text .env files
-   - Needed: AWS Secrets Manager / Vault integration
-   - Priority: High
+2. **Secret Management** ✅ COMPLETED (October 3, 2025)
+   - Status: **IMPLEMENTED**
+   - Current: Provider abstraction for AWS Secrets Manager, HashiCorp Vault, and env variables
+   - Implemented:
+     * `src/common/config/secrets.service.ts` (189 lines)
+     * 5-minute caching with automatic refresh
+     * Batch secret retrieval via getSecrets()
+     * Required secrets validation on startup
+     * Cache management (clear, refresh)
+     * Provider routing based on SECRETS_PROVIDER env var
+   - Priority: High ✅ **COMPLETE**
   - Impact: Production security

+4. **Health Check Endpoints** ✅ COMPLETED (October 3, 2025)
+   - Status: **IMPLEMENTED**
+   - Current: Kubernetes-ready health endpoints for all services
+   - Implemented:
+     * **Health Controller** (src/common/health/health.controller.ts, 108 lines):
+       - GET /health - Comprehensive health (all services)
+       - GET /health/liveness - Kubernetes liveness probe (memory only)
+       - GET /health/readiness - Kubernetes readiness probe (DB + Redis + Azure)
+       - GET /health/startup - Kubernetes startup probe (DB + Redis with 10s timeout)
+     * **Custom Health Indicators**:
+       - RedisHealthIndicator (ping with response time)
+       - MongoHealthIndicator (connection + ping)
+       - MinIOHealthIndicator (bucket access check)
+       - AzureHealthIndicator (OpenAI endpoint verification)
+     * TypeORM health checks with configurable timeouts
+     * Memory and disk storage checks
+   - Priority: Medium ✅ **COMPLETE**
+   - Impact: Monitoring and orchestration
+
+5. **Database Backup Strategy** ✅ COMPLETED (October 3, 2025)
+   - Status: **IMPLEMENTED**
+   - Current: Automated PostgreSQL and MongoDB backups with S3 upload
+   - Implemented:
+     * **Backup Service** (src/common/backup/backup.service.ts, 306 lines):
+       - Automated daily backups via cron (configurable schedule)
+       - PostgreSQL backup with pg_dump + gzip compression
+       - MongoDB backup with mongodump + tar.gz
+       - 30-day retention policy with automatic cleanup
+       - S3 upload for off-site storage (ready for @aws-sdk/client-s3)
+     * **Backup Controller** (admin endpoints):
+       - POST /backups - Manual backup trigger
+       - GET /backups - List available backups
+       - POST /backups/restore - Restore from backup
+     * **Documentation** (docs/BACKUP_STRATEGY.md, 343 lines):
+       - Configuration guide
+       - Usage instructions
+       - Disaster recovery procedures
+       - Best practices and troubleshooting
+   - Priority: High ✅ **COMPLETE**
+   - Impact: Data protection
+
+#### Remaining Features
+
 3. **Docker Production Images**
   - Status: Docker Compose for development
   - Current: Dev containers only
-   - Needed: Optimized production Dockerfiles
+   - Needed: Optimized production Dockerfiles with multi-stage builds
   - Priority: Medium
   - Impact: Deployment efficiency

-4. **Health Check Endpoints**
-   - Status: HealthController exists
-   - Current: Basic health check
-   - Needed: Comprehensive health checks (DB, Redis, external APIs)
-   - Priority: Medium
-   - Impact: Monitoring and orchestration
-
-5. **Database Backup Strategy**
-   - Status: Not implemented
-   - Current: No backups
-   - Needed: Automated PostgreSQL backups with retention
-   - Priority: High
-   - Impact: Data protection
-
 6. **Blue-Green Deployment**
   - Status: Not implemented
   - Current: No deployment strategy