WIP

[illume]

WIP

• backend/pkg: Add auth package
• backend: auth: Extract DecodeBase64JSON from headlamp.go
• backend: auth: Extract GetExpiryUnixTimeUTC from headlamp.go

[k8s-ci-robot]

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[Copilot]

Pull Request Overview

This pull request introduces an auth package to encapsulate base64 JSON decoding and token expiry extraction logic formerly located in headlamp.go, and replaces the inline implementations in headlamp.go with calls to the new functions.

• Adds auth-related functionality in backend/pkg/auth (DecodeBase64JSON and GetExpiryUnixTimeUTC)
• Introduces comprehensive tests in backend/pkg/auth/auth_test.go
• Refactors headlamp.go to use the new auth package utilities

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
backend/pkg/auth/auth.go	New auth package with functions for decoding base64 JSON and extracting token expiry
backend/pkg/auth/auth_test.go	Unit tests for the new auth package functions
backend/cmd/headlamp.go	Refactored to remove duplicate code by using the new auth package functions

Comments suppressed due to low confidence (1)

backend/pkg/auth/auth.go:46

• [nitpick] Consider rephrasing the function documentation for 'GetExpiryUnixTimeUTC' for improved clarity. For example, use: 'Extracts the expiry Unix time, in UTC, from the token payload's "exp" field.'

func GetExpiryUnixTimeUTC(tokenPayload map[string]interface{}) (time.Time, error) {