feat(language): Implement endpoint to fetch user languages

[ricky-ultimate]

Pull Request

Description

This PR implements an API endpoint to retrieve all languages associated with a given user ID. The changes include:

• Service Layer:

  • Added getUserLanguages(userId: string) method in LanguagesService.
  • Fetches languages associated with a user from the database.
  • Returns a 404 Not Found error if the user does not exist.

• Controller Layer:

  • Introduced GET /users/:id/languages endpoint in LanguagesController.
  • Ensures only authenticated users can access the endpoint.
  • Implements proper error handling for invalid or non-existent user IDs.

• Testing:

  • Added unit tests to validate successful retrieval of user languages.
  • Included tests for handling non-existent users.
  • Ensured repository interactions work as expected.

Related Issue

Fixes #1137
Fixes #1132

Type of Change

• feat: New feature
• fix: Bug fix
• docs: Documentation updates
• style: Code style/formatting changes
• refactor: Code refactoring
• perf: Performance improvements
• test: Test additions/updates
• chore: Build process or tooling changes
• ci: CI configuration changes
• other:

How Has This Been Tested?

• Unit tests
• Integration tests
• Manual tests

Test Evidence

Screenshots (if applicable)

Documentation Screenshots (if applicable)

Checklist

• My code follows the project's coding style
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published
• I have included a screenshot showing all tests passing
• I have included documentation screenshots (if applicable)

Additional Notes