shopify-ai-backup/ADMIN_MODELS_AUTO_MODEL_FIX.md

Admin Models Auto Model Fix

Summary

Fixed two issues with the admin models page related to the auto model setting for hobby/free plan users:

1. Added missing UI: Created the UI elements for setting the auto model for hobby/free plan users
2. Fixed model selection logic: Ensured that paid plan users can select their own models without the auto model setting interfering

Changes Made

1. Frontend - admin.html

File: /home/engine/project/chat/public/admin.html

Added a new card section for configuring the auto model for hobby/free plan users:

• Form: auto-model-form
• Select dropdown: auto-model-select
• Status display: auto-model-status

The UI explains that this setting only affects hobby/free plan users, while paid plan users can select their own models.

2. Backend - server.js

File: /home/engine/project/chat/server.js

Modified the resolvePlanModel() function to fix the model selection logic:

Previous Behavior:

• For paid plans, if configured models existed, it would always return the first configured model, ignoring user selections

New Behavior:

• For hobby/free plan users:

  • Uses the admin-configured freePlanModel setting when no specific model is requested
  • Still allows them to explicitly request specific models if they have a valid tier

• For paid plan users:

  • Always respects the user's model selection
  • If user requests a model (even without a tier), uses it
  • Only falls back to first configured model if user doesn't request anything or requests 'auto'

Test Results

Created comprehensive tests (test_model_resolution.js) that verify:

✓ Hobby users get the auto model when no specific request
✓ Hobby users get the auto model when requesting 'auto'
✓ Hobby users can explicitly request other models
✓ Paid users always get their requested model
✓ Paid users can request models without tiers
✓ Paid users get first configured model when no request
✓ Paid users get first configured model when requesting 'auto'

All 8 test cases pass.

Technical Details

Model Resolution Flow

1. Explicit model with tier (not 'auto'): Return requested model immediately
2. Hobby/Free plan:
   • Check admin's freePlanModel setting
   • Fall back to first configured model
   • Fall back to default model
3. Paid plan:
   • If specific model requested (not 'auto'), use it
   • Otherwise use first configured model
   • Fall back to default model

API Integration

The feature integrates with existing API endpoints:

• GET /api/admin/plan-settings - Retrieves current settings including freePlanModel
• POST /api/admin/plan-settings - Saves the freePlanModel setting

JavaScript Integration

The admin.js file already had all the necessary handlers:

• populateAutoModelOptions() - Populates the dropdown with available models
• Form submission handler at lines 1515-1532
• Proper element references at lines 38-40

User Impact

For Admins

• New UI section in Admin Panel → Build models page
• Can configure which model hobby/free users automatically use
• Clear indication that paid users can choose their own models

For Hobby/Free Plan Users

• Automatically assigned the admin-configured model
• Can still explicitly select other models if available

For Paid Plan Users

• Full control over model selection
• Their choices are always respected
• Auto model setting does not affect them