# Implementation Plan

- [x] 1. Create LogConfig module and JsonFormatter
  - [x] 1.1 Create `log_config.py` with `configure_logging()` function and `JsonFormatter` class
    - Implement JSON format output with timestamp, level, provider, message fields
    - Support configurable log levels via parameter
    - Add NullHandler as default when no configuration provided
    - _Requirements: 4.1, 4.2, 4.3, 4.4_
  - [ ]* 1.2 Write property test for JSON structure completeness
    - **Property 5: JSON log structure completeness**
    - **Validates: Requirements 4.4**
  - [x] 1.3 Add async logging support with QueueHandler
    - Implement `get_queue_handler()` function
    - Add QueueListener for background processing
    - _Requirements: 5.1, 5.2, 5.3_

- [x] 2. Enhance FetchBase with logging and error handling methods
  - [x] 2.1 Add logger property and logging methods to FetchBase
    - Add `_logger` property that returns logger with provider name
    - Add `_log_error()`, `_log_warning()`, `_log_info()`, `_log_debug()` methods
    - _Requirements: 1.1, 1.2, 1.3, 1.4_
  - [ ]* 2.2 Write property test for logger naming consistency
    - **Property 1: Logger naming consistency**
    - **Validates: Requirements 1.1**
  - [ ]* 2.3 Write property test for log level filtering
    - **Property 2: Log level filtering**
    - **Validates: Requirements 1.4**
  - [x] 2.4 Add error handling helper methods to FetchBase
    - Implement `_handle_http_error()` for HTTP request failures
    - Implement `_handle_unexpected_format()` for API response format issues
    - Implement `_handle_missing_env_var()` for missing environment variables
    - All methods should log appropriately and return empty list
    - _Requirements: 2.1, 2.2, 2.3, 2.4, 2.5_
  - [ ]* 2.5 Write property test for error handling returns empty list
    - **Property 3: Error handling returns empty list**
    - **Validates: Requirements 2.4**
  - [ ]* 2.6 Write property test for error log contains provider context
    - **Property 4: Error log contains provider context**
    - **Validates: Requirements 2.1, 2.2, 2.3, 3.4**

- [x] 3. Checkpoint - Make sure all tests are passing





  - Ensure all tests pass, ask the user if questions arise.

- [x] 4. Refactor provider implementations to use new logging system
  - [x] 4.1 Refactor FetchSiliconFlow to use base class logging
    - Replace print() with `_log_error()` and `_log_warning()`
    - Use `_handle_missing_env_var()` for API key check
    - Use `_handle_http_error()` for request exceptions
    - Use `_handle_unexpected_format()` for unexpected API responses
    - _Requirements: 3.1, 2.1, 2.2, 2.3_
  - [x] 4.2 Refactor FetchIFlow to use base class logging
    - Replace print() with `_log_error()`
    - Use `_handle_http_error()` for request exceptions
    - _Requirements: 3.2, 2.1_
  - [x] 4.3 Refactor FetchModelScope to use base class logging
    - Replace print() with `_log_error()` and `_log_warning()`
    - Use `_handle_http_error()` for request exceptions
    - Use `_handle_unexpected_format()` for unexpected API responses
    - _Requirements: 3.3, 2.1, 2.2_
  - [x] 4.4 Update FetchOpenRouter and FetchZhipu to use base class logging
    - Add error handling using base class methods where applicable
    - _Requirements: 2.1, 2.4_

- [x] 5. Update module exports and documentation





  - [x] 5.1 Update `__init__.py` to export LogConfig functions


    - Add `configure_logging` and `shutdown_logging` to public API
    - _Requirements: 4.2_
  - [ ]* 5.2 Write integration tests for provider logging
    - Test that each provider logs errors correctly
    - Verify no print() statements remain in error paths
    - _Requirements: 3.1, 3.2, 3.3, 3.4_

- [x] 6. Final Checkpoint - Make sure all tests are passing





  - Ensure all tests pass, ask the user if questions arise.


- [x] 7. Update README and Docs






