# NT8 Institutional SDK - Phase 0 Implementation Plan

## Project Overview
This document outlines the implementation plan for the NT8 Institutional SDK Phase 0, which includes setting up the repository foundation, implementing core interfaces, risk management, and position sizing components.

## Phase 0 Components
Based on the handoff summary, Phase 0 consists of 5 packages:
1. Repository Setup Package
2. Core Interfaces Package
3. Risk Management Package
4. Position Sizing Package
5. Complete Validation Script

## Detailed Implementation Plan

### 1. Repository Setup Package
**Objective**: Establish the complete directory structure and foundational files

#### Directory Structure to Create:
```
nt8-institutional-sdk/
├── .gitea/
│   └── workflows/
│       ├── build.yml
│       ├── test.yml
│       └── release.yml
├── .devcontainer/
│   ├── devcontainer.json
│   └── Dockerfile
├── src/
│   ├── NT8.Core/
│   │   ├── Common/
│   │   ├── Configuration/
│   │   │   ├── Interfaces/
│   │   │   └── Models/
│   │   ├── Risk/
│   │   ├── Sizing/
│   │   ├── Logging/
│   │   └── OMS/
│   ├── NT8.Adapters/
│   │   └── NinjaTrader/
│   ├── NT8.Strategies/
│   │   └── Examples/
│   └── NT8.Contracts/
│       └── V1/
├── tests/
│   ├── NT8.Core.Tests/
│   ├── NT8.Integration.Tests/
│   └── NT8.Performance.Tests/
├── tools/
│   ├── replay/
│   └── market-data/
├── docs/
│   ├── architecture/
│   ├── api/
│   └── deployment/
├── deployment/
│   ├── dev/
│   ├── staging/
│   └── prod/
├── .gitignore
├── .editorconfig
├── Directory.Build.props
├── NT8-SDK.sln
└── README.md
```

#### Key Files to Create:
1. **.gitignore** - Contains standard ignore patterns for .NET projects, Visual Studio, and NinjaTrader files
2. **Directory.Build.props** - Centralized MSBuild properties for the solution
3. **.editorconfig** - Code style and formatting conventions
4. **.gitea/workflows/build.yml** - CI/CD workflow for building and testing
5. **README.md** - Project overview and quick start guide

#### Tasks:
- [ ] Create directory structure as specified in repository_setup_package.md
- [ ] Create .gitignore file with the exact content from specifications
- [ ] Create Directory.Build.props file with the exact content from specifications
- [ ] Create .editorconfig file with the exact content from specifications
- [ ] Create .gitea/workflows directory and build.yml file
- [ ] Create README.md file with the exact content from specifications
- [ ] Create solution and projects using the specified dotnet commands
- [ ] Add required NuGet packages as specified
- [ ] Validate project structure and build

### 2. Core Interfaces Package
**Objective**: Implement all interface definitions and model classes

#### Key Files to Create:
- src/NT8.Core/Common/Interfaces/IStrategy.cs
- src/NT8.Core/Common/Models/StrategyMetadata.cs
- src/NT8.Core/Common/Models/StrategyIntent.cs
- src/NT8.Core/Common/Models/StrategyContext.cs
- src/NT8.Core/Common/Models/MarketData.cs
- src/NT8.Core/Risk/IRiskManager.cs
- src/NT8.Core/Sizing/IPositionSizer.cs

#### Tasks:
- [ ] Implement IStrategy interface
- [ ] Implement StrategyMetadata and related models
- [ ] Implement StrategyIntent and related enums
- [ ] Implement StrategyContext and related models
- [ ] Implement MarketData models and IMarketDataProvider interface
- [ ] Implement IRiskManager interface
- [ ] Implement IPositionSizer interface

### 3. Risk Management Package
**Objective**: Implement the BasicRiskManager with Tier 1 risk controls

#### Key Files to Create:
- src/NT8.Core/Risk/BasicRiskManager.cs

#### Tasks:
- [ ] Implement ValidateOrder method with all Tier 1 checks
- [ ] Implement OnFill method for position tracking
- [ ] Implement OnPnLUpdate method for P&L tracking
- [ ] Implement EmergencyFlatten method for emergency halts
- [ ] Implement GetRiskStatus method for monitoring
- [ ] Implement thread-safe locking mechanisms
- [ ] Add proper logging throughout the implementation

### 4. Position Sizing Package
**Objective**: Implement the BasicPositionSizer with fixed contracts and fixed dollar risk methods

#### Key Files to Create:
- src/NT8.Core/Sizing/BasicPositionSizer.cs

#### Tasks:
- [ ] Implement CalculateSize method with both sizing methods
- [ ] Implement Fixed Contracts sizing approach
- [ ] Implement Fixed Dollar Risk sizing approach
- [ ] Implement contract clamping (min/max limits)
- [ ] Implement multi-symbol support with accurate tick values
- [ ] Add proper configuration validation
- [ ] Add comprehensive error handling

### 5. Test Suite Implementation
**Objective**: Create comprehensive unit tests for all components

#### Tasks:
- [ ] Create test project structure
- [ ] Implement test data builders
- [ ] Create unit tests for Core Interfaces
- [ ] Create unit tests for Risk Management
- [ ] Create scenario tests for Risk Management
- [ ] Create unit tests for Position Sizing
- [ ] Create calculation validation tests for Position Sizing
- [ ] Ensure >90% test coverage

### 6. Validation and Documentation
**Objective**: Validate the complete implementation and create documentation

#### Tasks:
- [ ] Run complete validation script
- [ ] Verify all success criteria are met
- [ ] Document SDK foundation and usage guidelines
- [ ] Create developer setup guide
- [ ] Document architecture principles

## Development Guidelines
All implementation must follow the guidelines specified in:
- rules/archon.md - Archon workflow principles
- rules/Compile error guidance.md - NT8 compile guidelines
- rules/Guidelines.md - General development guidelines
- rules/nt8compilespec.md - NT8 compile specifications

## Success Criteria
Phase 0 is considered complete when:
1. Repository structure matches specification exactly
2. All starter files are in correct locations
3. Solution builds successfully with 0 warnings
4. All NuGet packages are properly referenced
5. CI/CD pipeline configuration is in place
6. All core interfaces are implemented
7. Risk management is fully functional with Tier 1 controls
8. Position sizing works with both methods
9. Comprehensive test suite passes with >90% coverage
10. Complete validation script passes

## Next Steps (Phase 1)
After successful completion of Phase 0, the focus will shift to:
1. Order Management System implementation
2. NinjaTrader 8 adapter development
3. Enhanced risk controls (Tier 2)
4. Market data handling and validation
5. Performance optimization

## Timeline
Estimated completion time: 2-3 weeks of traditional development (accelerated with AI implementation)

## Notes
This plan follows the Archon workflow principles:
1. Check Current Task → Review task details and requirements
2. Research for Task → Search relevant documentation and examples
3. Implement the Task → Write code based on research
4. Update Task Status → Move task from "todo" → "doing" → "review"
5. Get Next Task → Check for next priority task
6. Repeat Cycle

## Implementation Approach
Since this is being developed in Architect mode, the actual implementation will require switching to Code mode. The following files will need to be created in Code mode:

### Configuration Files
1. `.gitignore` - Git ignore patterns
2. `Directory.Build.props` - MSBuild properties
3. `.editorconfig` - Code formatting rules
4. `.gitea/workflows/build.yml` - CI/CD workflow
5. `README.md` - Project documentation

### Core SDK Files
1. `src/NT8.Core/Common/Interfaces/IStrategy.cs` - Strategy interface
2. `src/NT8.Core/Common/Models/StrategyMetadata.cs` - Strategy metadata models
3. `src/NT8.Core/Common/Models/StrategyIntent.cs` - Strategy intent models
4. `src/NT8.Core/Common/Models/StrategyContext.cs` - Strategy context models
5. `src/NT8.Core/Common/Models/MarketData.cs` - Market data models
6. `src/NT8.Core/Risk/IRiskManager.cs` - Risk manager interface
7. `src/NT8.Core/Risk/BasicRiskManager.cs` - Risk manager implementation
8. `src/NT8.Core/Sizing/IPositionSizer.cs` - Position sizer interface
9. `src/NT8.Core/Sizing/BasicPositionSizer.cs` - Position sizer implementation

### Test Files
1. `tests/NT8.Core.Tests/Risk/BasicRiskManagerTests.cs` - Risk manager unit tests
2. `tests/NT8.Core.Tests/Risk/RiskScenarioTests.cs` - Risk scenario tests
3. `tests/NT8.Core.Tests/Sizing/BasicPositionSizerTests.cs` - Position sizer unit tests

This implementation plan should be followed when switching to Code mode for actual file creation and coding.