Renames the `OriginalUrl` field to `OriginalURL` across media models to adhere to Go's common initialisms convention. The `json` tag is unchanged to maintain API compatibility.
Introduces constants for exporter formats (e.g., `FormatMarkdown`, `FormatDocx`) to eliminate the use of magic strings, enhancing type safety and making the code easier to maintain.
Additionally, this commit includes several minor code quality improvements:
- Wraps file-writing errors in exporters to provide more context.
- Removes redundant package-level comments from test files.
- Applies various minor linting fixes throughout the codebase.
Introduces `context.Context` to the `FetchCourse` method and its call chain, allowing for cancellable network requests and timeouts. This improves application robustness when fetching remote course data.
A new configuration package centralizes application settings, loading them from environment variables with sensible defaults for base URL, request timeout, and logging.
Standard `log` and `fmt` calls are replaced with a structured logging system built on `slog`, supporting both JSON and human-readable text formats.
This change also includes:
- Extensive benchmarks and example tests.
- Simplified Go doc comments across several packages.
BREAKING CHANGE: The `NewArticulateParser` constructor signature has been updated to accept a logger, base URL, and timeout, which are now supplied via the new configuration system.
Removes the `Get` prefix from exporter methods (e.g., GetSupportedFormat -> SupportedFormat) to better align with Go conventions for simple accessors.
Introduces `context.Context` propagation through the application, starting from `ProcessCourseFromURI` down to the HTTP request in the parser. This makes network operations cancellable and allows for setting deadlines, improving application robustness.
Additionally, optimizes the HTML cleaner by pre-compiling regular expressions for a minor performance gain.
- Implement tests for the app service, including course processing from file and URI.
- Create mock implementations for CourseParser and Exporter to facilitate testing.
- Add tests for HTML cleaner service to validate HTML content cleaning functionality.
- Develop tests for the parser service, covering course fetching and loading from files.
- Introduce tests for utility functions in the main package, ensuring URI validation and string joining.
- Include benchmarks for performance evaluation of key functions.
