# Architecture Plan for TurtleOnTime.py

## Overview

This document outlines a plan to refactor the `TurtleOnTime.py` file to improve its architecture, maintainability, and testability.

## Current Issues

*   Single Responsibility Principle violation
*   Tight coupling
*   Lack of modularity
*   Limited testability

## Proposed Solution

1.  Refactor the `TurtleTrading` class into smaller, more focused classes.
2.  Introduce dependency injection to decouple components.
3.  Create a configuration class to store configuration parameters.
4.  Implement robust error handling.
5.  Add logging.
6.  Create unit tests.

## Class Diagram
```mermaid
graph TD
    A[Understand Current Architecture] --> B{Read TurtleOnTime.py};
    B --> C[Identify Key Components];
    C --> D[Analyze Data Flow];
    D --> E[Assess Code Structure & Modularity];
    E --> F[Identify Potential Bottlenecks & Areas for Improvement];
    F --> G[Propose Architectural Changes & Refactoring];
    G --> H[Create Detailed Improvement Plan];
    H --> I[Present Improvement Plan (Mermaid Diagram)];
    I --> J[Seek User Approval];
    J -- Approved --> K[Write to File (if approved)];
    J -- Rejected --> L[Revise Plan];
    L --> I;
```

```mermaid
graph TD
    A[TurtleTrading Class] --> B(DataFetcher Class)
    A --> C(DonchianChannelCalculator Class)
    A --> D(PositionSizer Class)
    A --> E(TradingStrategy Class)
    F[Config Class] --> A
    G[Unit Tests] --> A
```

## Detailed Steps

*   **DataFetcher Class:** Responsible for fetching data from various sources (e.g., Akshare).  Should be configurable to support different data sources.
*   **DonchianChannelCalculator Class:**  Calculates Donchian channels.  Should be reusable for different timeframes.
*   **PositionSizer Class:**  Determines the size of positions based on risk tolerance and other factors.
*   **TradingStrategy Class:**  Encapsulates the trading logic.  Should be easily swappable to test different strategies.
*   **Config Class:**  Stores configuration parameters, such as data source URLs and trading strategy parameters.
*   **Error Handling:** Implement try-except blocks to catch and handle exceptions gracefully. Log errors to a file for debugging.
*   **Logging:** Use a logging library to track important events and debug issues.
*   **Unit Tests:** Create unit tests to verify the correctness of individual components.