# Gemini-Flow Project Reorganization Plan

## Overview

This document outlines the comprehensive reorganization of the Gemini-Flow project structure to achieve better separation of concerns, improved maintainability, and support for 50K+ users. The reorganization follows the SPARC methodology requirements of security, modularity, testability, and maintainability.

## Current State Analysis

### Issues Identified
- **Complex Directory Structure**: Current src/ contains 40+ files in core/ with overlapping responsibilities
- **Unclear Separation of Concerns**: Multiple modules handling similar functionality
- **Mixed Architectural Patterns**: Inconsistent patterns across components
- **Scalability Concerns**: Structure not optimized for high-throughput operations
- **Testing Infrastructure**: Mix of mock and live testing approaches

### Key Metrics
- **Core Files**: 40+ files in src/core/ requiring reorganization
- **Integration Points**: 8 Google AI services + MCP protocol support
- **Performance Requirements**: 396,610 SQLite ops/sec, <75ms routing latency
- **User Scale**: Designed for 50K+ concurrent users

## Proposed Architecture

### 1. Root Level Structure

```
gemini-flow/
├── 📁 src/                    # Core application source code
│   ├── 📁 core/              # Business logic and domain models
│   ├── 📁 integrations/      # External service integrations
│   ├── 📁 infrastructure/    # Infrastructure and cross-cutting concerns
│   ├── 📁 presentation/      # CLI and API interfaces
│   └── 📁 shared/            # Shared utilities and types
├── 📁 config/                # Configuration management
│   ├── 📁 environments/      # Environment-specific configs
│   ├── 📁 schemas/           # Configuration schemas
│   └── 📁 validation/        # Config validation rules
├── 📁 docs/                  # Documentation and specifications
│   ├── 📁 architecture/      # Architectural documentation
│   ├── 📁 api/              # API documentation
│   └── 📁 guides/           # Implementation guides
├── 📁 tests/                 # Test suites (live API only)
│   ├── 📁 integration/      # Integration tests
│   ├── 📁 performance/      # Performance tests
│   └── 📁 e2e/             # End-to-end tests
├── 📁 tools/                 # Development and build tools
│   ├── 📁 scripts/          # Build and deployment scripts
│   ├── 📁 generators/       # Code generation tools
│   └── 📁 analyzers/        # Code analysis tools
├── 📁 infrastructure/        # Infrastructure as Code
│   ├── 📁 docker/           # Container configurations
│   ├── 📁 kubernetes/       # K8s manifests
│   └── 📁 monitoring/       # Monitoring configurations
└── 📁 security/             # Security configurations
    ├── 📁 policies/         # Security policies
    ├── 📁 certificates/     # SSL/TLS certificates
    └── 📁 audits/           # Security audit logs
```

### 2. Core Module Architecture

#### 2.1 Core Business Logic (`src/core/`)

```
src/core/
├── 📁 agents/               # Agent coordination and management
│   ├── 📁 coordination/     # Multi-agent coordination
│   ├── 📁 lifecycle/        # Agent lifecycle management
│   └── 📁 capabilities/     # Agent capability definitions
├── 📁 protocols/            # Communication protocols
│   ├── 📁 a2a/             # Agent-to-Agent protocol
│   ├── 📁 mcp/             # Model Context Protocol
│   └── 📁 streaming/       # Real-time streaming protocol
├── 📁 models/               # Domain models and entities
│   ├── 📁 requests/        # Request/response models
│   ├── 📁 events/          # Event models
│   └── 📁 states/          # State management models
├── 📁 services/             # Core business services
│   ├── 📁 orchestration/   # Service orchestration
│   ├── 📁 routing/         # Intelligent routing
│   └── 📁 consensus/       # Distributed consensus
└── 📁 policies/             # Business rules and policies
    ├── 📁 validation/      # Input validation policies
    ├── 📁 security/        # Security policies
    └── 📁 performance/     # Performance policies
```

#### 2.2 Integration Layer (`src/integrations/`)

```
src/integrations/
├── 📁 google-ai/           # Google AI services integration
│   ├── 📁 vertex-ai/       # Vertex AI integration
│   ├── 📁 gemini/          # Gemini models
│   ├── 📁 veo3/           # Video generation
│   ├── 📁 imagen4/        # Image generation
│   └── 📁 streaming/      # Multi-modal streaming
├── 📁 mcp/                 # MCP server integrations
│   ├── 📁 servers/         # MCP server implementations
│   ├── 📁 clients/         # MCP client libraries
│   └── 📁 bridges/         # Protocol bridges
├── 📁 storage/             # Storage integrations
│   ├── 📁 sqlite/          # SQLite adapter
│   ├── 📁 redis/           # Redis adapter
│   └── 📁 filesystem/      # File system adapter
└── 📁 monitoring/          # Monitoring service integrations
    ├── 📁 metrics/         # Metrics collection
    ├── 📁 logging/         # Centralized logging
    └── 📁 tracing/         # Distributed tracing
```

#### 2.3 Infrastructure Layer (`src/infrastructure/`)

```
src/infrastructure/
├── 📁 security/            # Security infrastructure
│   ├── 📁 authentication/  # Auth services
│   ├── 📁 authorization/   # Authorization services
│   ├── 📁 encryption/      # Encryption services
│   └── 📁 audit/           # Audit logging
├── 📁 performance/         # Performance infrastructure
│   ├── 📁 caching/        # Caching mechanisms
│   ├── 📁 pooling/        # Connection pooling
│   └── 📁 optimization/    # Performance optimization
├── 📁 resilience/          # Resilience infrastructure
│   ├── 📁 circuit-breakers/ # Circuit breaker patterns
│   ├── 📁 rate-limiters/   # Rate limiting
│   └── 📁 health-checks/   # Health monitoring
└── 📁 deployment/          # Deployment infrastructure
    ├── 📁 configuration/   # Runtime configuration
    ├── 📁 migration/       # Database migrations
    └── 📁 orchestration/   # Deployment orchestration
```

#### 2.4 Presentation Layer (`src/presentation/`)

```
src/presentation/
├── 📁 cli/                 # Command Line Interface
│   ├── 📁 commands/        # CLI command definitions
│   ├── 📁 interactive/     # Interactive mode
│   └── 📁 output/          # Output formatting
├── 📁 api/                 # REST/GraphQL APIs
│   ├── 📁 v1/             # API version 1
│   ├── 📁 middleware/     # API middleware
│   └── 📁 validation/     # Request validation
└── 📁 webhooks/            # Webhook handlers
    ├── 📁 handlers/        # Webhook event handlers
    ├── 📁 validation/      # Webhook validation
    └── 📁 responses/       # Webhook responses
```

#### 2.5 Shared Components (`src/shared/`)

```
src/shared/
├── 📁 types/               # TypeScript type definitions
│   ├── 📁 domain/          # Domain types
│   ├── 📁 api/             # API types
│   └── 📁 infrastructure/  # Infrastructure types
├── 📁 utils/               # Utility functions
│   ├── 📁 validation/      # Validation utilities
│   ├── 📁 formatting/      # Data formatting
│   └── 📁 conversion/      # Data conversion utilities
├── 📁 constants/           # Application constants
│   ├── 📁 config/          # Configuration constants
│   ├── 📁 limits/          # System limits
│   └── 📁 defaults/        # Default values
└── 📁 errors/              # Custom error classes
    ├── 📁 domain/          # Domain-specific errors
    ├── 📁 infrastructure/  # Infrastructure errors
    └── 📁 validation/      # Validation errors
```

### 3. Configuration Management Architecture

#### 3.1 Centralized Configuration System

```
config/
├── 📁 environments/        # Environment-specific configurations
│   ├── 📁 development/     # Development environment
│   ├── 📁 staging/         # Staging environment
│   ├── 📁 production/      # Production environment
│   └── 📁 testing/         # Testing environment
├── 📁 schemas/            # Configuration validation schemas
│   ├── 📁 core.json       # Core configuration schema
│   ├── 📁 integrations.json # Integration schemas
│   └── 📁 infrastructure.json # Infrastructure schemas
├── 📁 validation/         # Configuration validation rules
│   ├── 📁 validators/     # Validation functions
│   ├── 📁 sanitizers/     # Data sanitization
│   └── 📁 transformers/   # Configuration transformers
├── 📁 templates/          # Configuration templates
│   ├── 📁 docker.env     # Docker environment template
│   ├── 📁 kubernetes.yaml # K8s configuration template
│   └── 📁 ci-cd.json     # CI/CD pipeline template
└── 📁 registry/           # Configuration registry
    ├── 📁 providers/      # Configuration providers
    ├── 📁 loaders/        # Configuration loaders
    └── 📁 watchers/       # Configuration watchers
```

#### 3.2 Configuration Categories

| Category | Purpose | Examples |
|----------|---------|----------|
| **Core** | Application fundamentals | App metadata, feature flags, limits |
| **Security** | Authentication & authorization | OAuth configs, API keys, certificates |
| **Integrations** | External service configs | Google AI, MCP servers, databases |
| **Infrastructure** | Runtime environment | Ports, hosts, resource allocations |
| **Performance** | Performance tuning | Cache settings, timeouts, concurrency |
| **Monitoring** | Observability settings | Log levels, metrics endpoints, tracing |

### 4. Testing Architecture (Live API Only)

#### 4.1 Test Organization

```
tests/
├── 📁 integration/        # Integration tests (live APIs)
│   ├── 📁 google-ai/     # Google AI service tests
│   ├── 📁 mcp/          # MCP protocol tests
│   ├── 📁 protocols/    # Protocol integration tests
│   └── 📁 performance/  # Performance validation tests
├── 📁 e2e/              # End-to-end tests
│   ├── 📁 workflows/    # Complete workflow tests
│   ├── 📁 scenarios/    # User scenario tests
│   └── 📁 load/         # Load testing scenarios
├── 📁 performance/      # Performance benchmark tests
│   ├── 📁 benchmarks/   # Benchmark specifications
│   ├── 📁 load-tests/   # Load testing configurations
│   └── 📁 stress-tests/ # Stress testing scenarios
├── 📁 fixtures/         # Test data and fixtures
│   ├── 📁 generators/   # Test data generators
│   └── 📁 validators/   # Test result validators
└── 📁 utils/            # Testing utilities
    ├── 📁 reporters/    # Test report generators
    ├── 📁 analyzers/    # Test result analyzers
    └── 📁 comparators/   # Performance comparators
```

#### 4.2 Live API Testing Strategy

**No Mock Data Policy**: All tests must use live API endpoints and real services.

**Test Categories**:
- **Integration Tests**: Validate service interactions with live APIs
- **Performance Tests**: Benchmark against real infrastructure
- **E2E Tests**: Complete workflows with actual external dependencies
- **Load Tests**: Scalability validation under realistic conditions

### 5. Build and Deployment Architecture

#### 5.1 Build System Design

```
tools/
├── 📁 build/            # Build tools and scripts
│   ├── 📁 compilers/    # TypeScript compilation
│   ├── 📁 bundlers/     # Module bundling
│   ├── 📁 optimizers/   # Build optimization
│   └── 📁 validators/   # Build validation
├── 📁 deployment/       # Deployment tools
│   ├── 📁 docker/       # Container build tools
│   ├── 📁 kubernetes/   # K8s deployment tools
│   ├── 📁 monitoring/   # Monitoring deployment
│   └── 📁 rollback/     # Deployment rollback tools
├── 📁 scripts/          # Utility scripts
│   ├── 📁 setup/        # Environment setup scripts
│   ├── 📁 migration/    # Data migration scripts
│   └── 📁 maintenance/  # Maintenance scripts
└── 📁 generators/       # Code generation tools
    ├── 📁 types/        # TypeScript type generators
    ├── 📁 docs/         # Documentation generators
    └── 📁 configs/      # Configuration generators
```

#### 5.2 Deployment Pipeline

**Stages**:
1. **Development**: Local development with live API validation
2. **Testing**: Integration testing with live services
3. **Staging**: Pre-production validation
4. **Production**: Zero-downtime deployment with rollback capability

**Deployment Strategies**:
- **Blue-Green**: Zero-downtime deployments
- **Rolling Updates**: Gradual service updates
- **Feature Flags**: Gradual feature rollouts
- **Database Migrations**: Safe schema updates

### 6. Security Architecture

#### 6.1 Security Boundaries

```
security/
├── 📁 authentication/   # Authentication services
│   ├── 📁 oauth2/      # OAuth2 implementation
│   ├── 📁 jwt/         # JWT token management
│   └── 📁 mfa/         # Multi-factor authentication
├── 📁 authorization/    # Authorization services
│   ├── 📁 rbac/        # Role-based access control
│   ├── 📁 abac/        # Attribute-based access control
│   └── 📁 policies/     # Authorization policies
├── 📁 encryption/       # Encryption services
│   ├── 📁 at-rest/     # Data at rest encryption
│   ├── 📁 in-transit/  # Data in transit encryption
│   └── 📁 key-management/ # Key management service
├── 📁 audit/            # Audit and compliance
│   ├── 📁 logging/     # Security event logging
│   ├── 📁 monitoring/  # Security monitoring
│   └── 📁 reporting/   # Compliance reporting
└── 📁 policies/         # Security policies
    ├── 📁 access-control/ # Access control policies
    ├── 📁 data-protection/ # Data protection policies
    └── 📁 incident-response/ # Incident response policies
```

#### 6.2 Security Patterns

**Zero Trust Architecture**:
- **Identity Verification**: All requests must be authenticated
- **Authorization**: Role-based and attribute-based access control
- **Encryption**: End-to-end encryption for all data
- **Monitoring**: Comprehensive audit logging and monitoring

**Credential Management**:
- **Environment Variables**: All credentials via environment variables
- **Secret Rotation**: Automated credential rotation
- **Access Controls**: Principle of least privilege
- **Audit Trails**: Complete audit trail for credential access

### 7. Monitoring and Observability

#### 7.1 Monitoring Architecture

```
monitoring/
├── 📁 metrics/          # Metrics collection
│   ├── 📁 application/  # Application metrics
│   ├── 📁 infrastructure/ # Infrastructure metrics
│   └── 📁 business/     # Business metrics
├── 📁 logging/          # Centralized logging
│   ├── 📁 application/  # Application logs
│   ├── 📁 security/     # Security logs
│   └── 📁 audit/        # Audit logs
├── 📁 tracing/          # Distributed tracing
│   ├── 📁 requests/     # Request tracing
│   ├── 📁 transactions/ # Transaction tracing
│   └── 📁 dependencies/ # External dependency tracing
├── 📁 alerting/         # Alerting and notifications
│   ├── 📁 rules/        # Alerting rules
│   ├── 📁 channels/     # Notification channels
│   └── 📁 escalation/   # Escalation policies
└── 📁 dashboards/       # Monitoring dashboards
    ├── 📁 operational/  # Operational dashboards
    ├── 📁 performance/  # Performance dashboards
    └── 📁 business/     # Business intelligence dashboards
```

#### 7.2 Key Metrics

**Performance Metrics**:
- **Response Times**: API response times <75ms target
- **Throughput**: 396,610 SQLite operations/second
- **Error Rates**: <0.1% error rate
- **Resource Utilization**: CPU, memory, network usage

**Business Metrics**:
- **Active Users**: Concurrent user count
- **API Calls**: Request volume by service
- **Success Rates**: Operation success rates
- **Latency**: End-to-end operation latency

### 8. Scalability Considerations

#### 8.1 Horizontal Scaling

**Application Layer**:
- **Stateless Services**: All services designed for horizontal scaling
- **Load Balancing**: Intelligent load balancing across instances
- **Auto-scaling**: Automatic scaling based on demand
- **Service Discovery**: Dynamic service registration and discovery

**Data Layer**:
- **Database Sharding**: Horizontal partitioning for large datasets
- **Read Replicas**: Read scaling through replication
- **Caching Strategy**: Multi-layer caching architecture
- **CDN Integration**: Content delivery network for static assets

#### 8.2 Resource Management

**Compute Resources**:
- **Container Orchestration**: Kubernetes-based deployment
- **Resource Limits**: CPU and memory limits per service
- **Health Checks**: Continuous health monitoring
- **Graceful Shutdown**: Proper resource cleanup

**Connection Management**:
- **Connection Pooling**: Efficient database connection management
- **Circuit Breakers**: Failure isolation and recovery
- **Rate Limiting**: API rate limiting and throttling
- **Timeouts**: Configurable timeouts for all operations

## Migration Strategy

### Phase 1: Foundation (Weeks 1-2)
1. **Create new directory structure**
2. **Set up configuration management system**
3. **Implement basic security framework**
4. **Establish monitoring foundation**

### Phase 2: Core Services (Weeks 3-4)
1. **Migrate core business logic**
2. **Implement integration layer**
3. **Set up infrastructure services**
4. **Create presentation layer**

### Phase 3: Integration (Weeks 5-6)
1. **Migrate existing functionality**
2. **Update configuration references**
3. **Implement monitoring integration**
4. **Set up deployment pipeline**

### Phase 4: Optimization (Weeks 7-8)
1. **Performance optimization**
2. **Security hardening**
3. **Scalability validation**
4. **Documentation completion**

## Benefits of This Architecture

### 1. **Improved Maintainability**
- Clear separation of concerns
- Consistent patterns and conventions
- Comprehensive documentation
- Automated testing with live APIs

### 2. **Enhanced Security**
- Zero trust architecture
- Comprehensive audit logging
- Secure credential management
- End-to-end encryption

### 3. **Better Scalability**
- Horizontal scaling design
- Resource-efficient architecture
- Performance monitoring
- Load balancing capabilities

### 4. **Operational Excellence**
- Comprehensive monitoring
- Automated deployment
- Incident response procedures
- Performance benchmarking

### 5. **Developer Experience**
- Clear code organization
- Consistent patterns
- Comprehensive tooling
- Live API development environment

## Success Metrics

- **Maintainability**: 50% reduction in code complexity
- **Performance**: Meet 75ms latency target
- **Security**: Zero trust implementation complete
- **Scalability**: Support for 50K+ concurrent users
- **Testing**: 100% live API test coverage
- **Deployment**: Zero-downtime deployment capability

---

**Next Steps**: Review this reorganization plan and provide feedback on any specific areas requiring clarification or modification before proceeding to implementation.