Add OAuth2 refactoring and refresh token

[santiagomed]

Features and Improvements

• Integration of OAuth2 Token Validation and Refresh Logic:

  • Implemented a method to validate the OAuth2 token and refresh it if expired in the ApiClient struct.
  • The method validate_and_refresh_oauth2_token checks the current time against the token's expiration time and refreshes the token using oauth2_refresh_token if necessary.

• Enhanced get_oauth2_token Method:

  • The logic of fetching the OAuth2 token has been refined to first check the token store for existing tokens and validate them. The method now calls validate_and_refresh_oauth2_token to ensure that a valid token is always returned to the caller.

• Centralized OAuth2 Client Creation:

  • Added a new private method create_oauth2_client within Auth to return a properly configured OAuth2 client.

• Structured Token Management:

  • Introduced a new OAuth2Token struct to encapsulate access token information, including the access token, refresh token, and expiration time.
  • The token store methods have been updated to save and retrieve the new structured tokens.

• New Scopes Management:

  • Created an OAuth2Scopes struct to manage and return all necessary OAuth2 scopes in a structured manner, allowing for cleaner additions and modifications to required scopes.

Bug Fixes

• Error Handling and Reporting:

  • Improved error handling when refreshing tokens and fetching usernames, ensuring proper error messages are returned for various failures.

• Fixed Refresh Token Management:

  • Ensured that refresh tokens are correctly handled and stored in the token store. Adjustments were made to avoid crashing due to missing refresh tokens.

Additional Changes

• Updated Testing Logic:

  • Adjusted test cases to accommodate new token structures and refresh logic. Tests now utilize the timestamp to create valid refresh tokens for the mock setup.

• Code Refactoring:

  • Cleaned up redundant code throughout the ApiClient and Auth modules, improving readability and maintainability.

Development Environment

• VS Code Debug Configuration:
  • Added a new launch.json configuration file for the VS Code environment to facilitate easier debugging of the application, specifically for the use of the LLDB debugger.

[tapans]

nice