Replace real names with auto-generated aliases in course discussions

[amoscicki]

Summary

User privacy concern: course video discussions currently display users' real names (from Google OAuth). These should be replaced with auto-generated aliases to protect user privacy.

Current Behavior

When a user registers via Google OAuth, their real name (googleUser.name) is stored as displayName in the profiles table and displayed publicly in course discussions.

Registration flow (src/use-cases/users.ts:51):

await createProfile(existingUser.id, googleUser.name, googleUser.picture);

Discussion display (src/routes/learn/$slug/-components/comment-list.tsx:210):

{comment.profile.displayName}

Expected Behavior

• During registration, an alias should be auto-generated instead of using the real name
• The alias should be displayed in course discussions
• Users should optionally be able to change their alias later via profile settings

Proposed Solution

1. Add alias generation utility - Create a function to generate unique aliases using common patterns:

   • Adjective + Noun + Number (e.g., "SwiftFalcon42", "BrightCoder78")
   • Or use a library like unique-names-generator

2. Modify registration flow - Update createGoogleUserUseCase() to generate an alias:

   const alias = generateUniqueAlias();
   await createProfile(existingUser.id, alias, googleUser.picture);

3. Add uniqueness check - Ensure generated aliases don't collide with existing ones

4. Migration consideration - Existing users with real names may need a migration to generate aliases

Affected Areas

• Use Cases: /src/use-cases/users.ts - registration logic
• Data Access: /src/data-access/profiles.ts - profile creation
• Components: /src/routes/learn/$slug/-components/comment-list.tsx - already uses displayName
• New utility: alias generation function

Acceptance Criteria

• New users receive auto-generated alias instead of real name
• Aliases are unique across the platform
• Aliases are displayed in course video discussions
• Aliases follow a consistent, readable pattern
• Existing users' display names are migrated to aliases (or flagged for update)
• Users can optionally customize their alias in profile settings

[coderabbitai]

📝 CodeRabbit Plan Mode

Generate an implementation plan and prompts that you can use with your favorite coding agent.

• Create Plan

Examples

• Example 1
• Example 2

---

---

🧪 Issue enrichment is currently in open beta.

You can configure auto-planning by selecting labels in the issue_enrichment configuration.

To disable automatic issue enrichment, add the following to your .coderabbit.yaml:

issue_enrichment:
  auto_enrich:
    enabled: false

💬 Have feedback or questions? Drop into our discord or schedule a call!