Fix Nuxt session cookie name resolution and token request auth method

[janithjay]

Purpose

Fixes two issues preventing sign in in the @thunderid/nuxt SDK and quickstart sample app:

1. Session Cookie Resolution: getSessionCookieName() and getTempSessionCookieName() in packages/nuxt/src/runtime/server/utils/session.ts evaluated static property access (CookieConfig.SESSION_COOKIE_NAME and CookieConfig.TEMP_SESSION_COOKIE_NAME), which returned undefined. This caused session cookies to be saved under the literal cookie name "undefined" instead of the configured vendor prefix (e.g. __thunderid__session).
2. Token Request Configuration: The default token endpoint auth method (client_secret_basic) caused token exchange to fail with an unauthorized_client error when the Identity Provider expected credentials in the request body. Configured tokenRequest.authMethod to client_secret_post in samples/nuxt/quickstart/nuxt.config.ts.

Approach

• Updated getSessionCookieName() and getTempSessionCookieName() in packages/nuxt/src/runtime/server/utils/session.ts to call static methods CookieConfig.getSessionCookieName(vendor) and CookieConfig.getTempSessionCookieName(vendor).
• Configured thunderid.tokenRequest.authMethod: 'client_secret_post' in samples/nuxt/quickstart/nuxt.config.ts.

Related Issues

• fixes [Bug]: Token exchange fails with 500 error when completing sign-in flow in Nuxt SDK thunderid#4568

Related PRs

• N/A

Checklist

• Followed the contribution guidelines.
• Manual test round performed and verified.
• Documentation provided. (Add links if there are any)
• Tests provided. (Add links if there are any)
  • Unit Tests
  • Integration Tests
• Breaking changes. (Fill if applicable)
  • Breaking changes section filled.
  • breaking change label added.

Security checks

• Followed secure coding standards in WSO2 Secure Coding Guidelines
• Confirmed that this PR doesn't commit any keys, passwords, tokens, usernames, or other secrets.

Summary by CodeRabbit

• New Features

  • Added support for vendor-specific session cookie names.
  • Added token request configuration using client secret authentication in the Nuxt quickstart.

• Chores

  • Simplified the quickstart environment template by removing obsolete application and authentication URL settings.
  • Updated Nuxt configuration for improved consistency.

[coderabbitai]

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Review details

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Run ID: 14b9dc47-fdc0-47a2-bade-2b41b0125f21

📥 Commits

Reviewing files that changed from the base of the PR and between 950ecb8 and f57cb52.

📒 Files selected for processing (2)

• packages/nuxt/src/runtime/server/utils/session.ts
• samples/nuxt/quickstart/nuxt.config.ts

📝 Walkthrough

Walkthrough

The PR updates Nuxt session cookie helpers for vendor-specific names. It also updates the Nuxt quickstart configuration with ThunderID token authentication and removes obsolete environment variables.

Changes

Nuxt integration updates

Layer / File(s)	Summary
Vendor-aware session cookie resolution packages/nuxt/src/runtime/server/utils/session.ts	Session cookie helpers accept an optional vendor and delegate name resolution to CookieConfig.
Quickstart authentication configuration samples/nuxt/quickstart/nuxt.config.ts, samples/nuxt/quickstart/.env.example	The quickstart adds client_secret_post token authentication, reorders CSS configuration, and removes obsolete ThunderID environment variables.

Estimated code review effort: 2 (Simple) | ~10 minutes

Possibly related PRs

• thunder-id/javascript-sdks#24: Updates Nuxt session cookie helpers to use vendor-aware CookieConfig name resolution.

Suggested reviewers: copilot, brionmario

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Title check	✅ Passed	The title clearly summarizes both primary fixes: session cookie name resolution and token request authentication.
Description check	✅ Passed	The description covers the purpose, approach, issue reference, checklist status, and security checks; documentation and test sections remain unchecked.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[Copilot]

Pull request overview

Fixes Nuxt SDK sign-in issues by correcting server-side session cookie name derivation and updating the Nuxt quickstart to use a token endpoint client authentication method compatible with the target IdP.

Changes:

• Update Nuxt server session cookie name helpers to use CookieConfig.get*CookieName(...) instead of non-existent static properties.
• Configure the Nuxt quickstart to use tokenRequest.authMethod: 'client_secret_post'.
• Simplify the quickstart .env.example entries (but note the remaining doc/config references to NUXT_PUBLIC_THUNDERID_APPLICATION_ID).

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
samples/nuxt/quickstart/nuxt.config.ts	Adds thunderid.tokenRequest.authMethod override and cleans up config ordering.
samples/nuxt/quickstart/.env.example	Removes several previously documented env vars from the quickstart example file.
packages/nuxt/src/runtime/server/utils/session.ts	Fixes cookie name generation by using CookieConfig static methods.

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