hCaptcha: add custom error handling and fix documentation

levatax commented 1 month ago

This pull request introduces custom error handling functionality to the hCaptcha middleware. It allows users to define a custom validation response function, providing greater flexibility for handling hCaptcha validation errors. If the custom function is set, it will be invoked with the validation result, allowing for tailored error responses.

Additionally, this PR corrects the documentation, specifying the correct order of middleware usage. The hCaptcha middleware should be placed before the handler in the route definition, ensuring proper validation of the hCaptcha token before processing requests.

Changes Made:

•   Extended the Config structure to include a ValidateFunc field for custom error handling.
•   Updated the Validate method to call the custom function if provided.
•   Fixed the documentation to clarify the order of middleware and handler in usage examples.

Summary by CodeRabbit

New Features
- Introduced a custom validation function, ValidateFunc, allowing users to define their own validation logic for HCaptcha results.
- Updated example usage in documentation to reflect the new validation capabilities and changed the endpoint to /api/submit.
Bug Fixes
- Enhanced error handling for validation failures, providing custom error responses.

coderabbitai[bot] commented 1 month ago

Walkthrough

The changes introduce a new property, ValidateFunc, to the hcaptcha middleware, allowing users to implement custom validation logic upon HCaptcha verification. This function receives a boolean indicating validation success and the Fiber context, returning an error if validation fails. Additionally, the example usage in the README.md has been updated to reflect these changes, including a new endpoint for submitting requests. The errors package is now imported to facilitate error handling within the custom validation function.

Changes

File	Change Summary
hcaptcha/README.md	Updated documentation to include `ValidateFunc`, modified example to use `/api/submit`, and added error handling.
hcaptcha/config.go	Added `ValidateFunc` field to `Config` struct for custom validation logic.
hcaptcha/hcaptcha.go	Introduced optional `ValidateFunc` for custom validation in middleware, maintaining original behavior if not provided.

Poem

In the garden where bunnies play,
New validations hop in today!
With ValidateFunc, oh what a thrill,
Custom checks bring joy and skill.
HCaptcha's now a friend so true,
Let’s celebrate with a joyful “Woohoo!” 🐰✨

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ReneWerner87 commented 4 weeks ago

@levatax thanks for the work can you add any more tests ?

do the other fiber middlewares or other hcaptcha golang functions already have such functions ? just want to make sure that the existing fiber/golang users are satisfied with the function names and functionality and do not expect other schemes can you do some more research?

gofiber / contrib