add session reconnect

[iceljc]

No description provided.

[GGHansome]

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Code Review Summary

Change Summary: The code changes mainly focus on improving modularity and maintainability by refactoring the namespace organization, updating class properties and method implementations, and adding new functionalities related to websocket session management, authorization handling, and extension methods for string utilities. Additionally, it aims to improve performance and scalability by conditionally loading services and enhancing the reconnect logic for real-time hooks.

Identified Issues

Issue 1: Use of Nullable Reference Types

• Description: In StringExtensions.cs, the updated method signature uses a nullable type for str which aligns with modern C# practices to handle null values more explicitly.
• Suggestion: Continue using nullable types and the ? symbol where appropriate to prevent potential NullReferenceException.
• Example:

  // Before
  public static string IfNullOrEmptyAs(this string str, string defaultValue)
  // After
  public static string IfNullOrEmptyAs(this string? str, string defaultValue)

Issue 2: Repeated Logic in Authorization

• Description: The repetitive user validation logic was present across multiple controllers and has been replaced by a single [BotSharpAuth] attribute.
• Suggestion: Use the newly created attribute consistently to centralize authorization logic and enhance code maintainability.
• Example:

  [BotSharpAuth]
  [HttpPost("/refresh-agents")]
  public async Task<string> RefreshAgents()
  {

Issue 3: Conditional Logic for Hosted Services

• Description: CrontabPlugin.cs now conditionally adds hosted services based on settings.
• Suggestion: Ensure configuration settings are correctly managed and logged for debugging if issues arise in development or production.
• Example:

  if (settings.Watcher?.Enabled == true)
  {
      services.AddHostedService<CrontabWatcher>();
  }

Issue 4: Resource Management with Websocket

• Description: In BotSharpRealtimeSession.cs, resource management practices are improved to prevent operation on disposed objects.
• Suggestion: Always check disposal status before performing operations that rely on the object's state.
• Example:

  if (_disposed || _websocket.State != WebSocketState.Open)
  {
      return;
  }

Overall Assessment

The code changes significantly enhance the maintainability and scalability of the BotSharp application. The refactoring and use of attributes for common logic reduce code duplication and potential for errors. There are clear improvements in handling nullable types, conditional service registration, and resource management with websockets, aligning the implementation with best practices for modern C# development. Future improvements can focus on ensuring comprehensive exception handling and thorough unit tests, especially for the new functionalities added.