Misleading: Missing Input Validation in /encode endpoint

[rohan-pandeyy]

Describe the bug

The /encode endpoint (both GET and POST) does not validate if latitude and longitude are provided. If they are missing, the internal logic throws a TypeError due to undefined arithmetic, which is caught and returned as a 400 error with a confusing message: Cannot read properties of undefined (reading 'NaN').

Steps to reproduce

1. Send a POST request to /digipin/encode with an empty body {}.
2. Observe the response.

Expected behavior

The API should explicitly check for missing parameters and return a clear error message like Latitude and Longitude are required.

Actual behavior

Returns {"error": "Cannot read properties of undefined (reading 'NaN')"}.

Screenshot

[rohan-pandeyy]

Hi maintainers, kindly let me know if you agree and align with this issue. If it seems valid, kindly assign it to me. Thank you :)