Fix token validation to handle 503 model loading as valid state

[Copilot]

Token validation was rejecting valid Hugging Face tokens when models returned 503 (loading state), preventing users from proceeding.

Changes

Token validation (testHuggingFaceToken)

• Handle 503 responses as valid token with loading state, not errors
• Return structured { valid, status, message } for all response types: 200 (ready), 503 (loading), 401/403 (invalid), 429 (rate limited), network errors
• Add console logging for debugging API interactions

User messaging (saveAndTestToken)

• Display status-specific messages: "Model is loading (this is normal)" for 503, network warnings for fetch failures
• Use result message directly instead of conditional logic duplication
• Extract MODEL_LOADING_MESSAGE constant to eliminate redundancy

Error handling (generateImage)

• Add console logging at key points: request start, response status, errors
• Clarify error messages for better debugging

Example

Before: 503 response → validation fails → user blocked

After:

// 503 now treated as valid
if (response.status === 503) {
    return { valid: true, status: 'loading', message: MODEL_LOADING_MESSAGE };
}

User sees: "✅ Token verified! Model is loading (this is normal). You can proceed - it will be ready shortly."

Screenshots

Token entry with validation prompt:

Network error handling:

Original prompt

Issue

The token validation in the Taboodles game is failing when users enter valid Hugging Face tokens. The current implementation doesn't properly handle all the API response scenarios, particularly:

1. Model loading states (503 errors)
2. CORS preflight requests
3. Better error messages for debugging

Changes Needed

Update taboodles/script.js

Fix the testHuggingFaceToken function (lines 217-242):

• The function currently only checks for 401/403 errors
• It should treat 503 (model loading) as a valid token state
• Add better handling for network errors and CORS issues
• Update the logic:
  • Status 200: Token valid, model ready
  • Status 503: Token valid, model loading
  • Status 401/403: Invalid token
  • Status 429: Valid token, rate limited
  • Other errors: Show specific error message

Improve error messages in saveAndTestToken function (lines 244-279):

• Show more helpful messages that explain what's happening
• For 503 errors, tell the user the token is valid but model is loading
• Add a message that they can proceed to generate images even if model is loading
• Update the success message to be clearer

Update the generateImage function error handling (lines 115-202):

• Add console logging for debugging (can be removed later)
• Improve error messages to be more user-friendly
• Better handle the case where model is loading on first request

Expected Behavior After Fix

When a user enters a valid token:

• If model is ready: Show "✅ Token verified! Model is ready."
• If model is loading: Show "✅ Token verified! Model is loading (this is normal). You can proceed - it will be ready in ~20 seconds."
• If token is invalid: Show "❌ Invalid token. Please check your token."
• If rate limited: Show "✅ Token is valid but rate limit reached. Wait a moment before generating."
• If network error: Show "⚠️ Could not verify token. Check your internet connection."

The user should still be able to proceed with image generation even if the test shows model is loading, since the generateImage function already has retry logic.

Testing

The fix should work with the test token format: 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 (read permission)

Security Note

The test token above is just for reference and should not be committed to the repository.

This pull request was created as a result of the following prompt from Copilot chat.

Issue

The token validation in the Taboodles game is failing when users enter valid Hugging Face tokens. The current implementation doesn't properly handle all the API response scenarios, particularly:

1. Model loading states (503 errors)
2. CORS preflight requests
3. Better error messages for debugging

Changes Needed

Update taboodles/script.js

Fix the testHuggingFaceToken function (lines 217-242):

• The function currently only checks for 401/403 errors
• It should treat 503 (model loading) as a valid token state
• Add better handling for network errors and CORS issues
• Update the logic:
  • Status 200: Token valid, model ready
  • Status 503: Token valid, model loading
  • Status 401/403: Invalid token
  • Status 429: Valid token, rate limited
  • Other errors: Show specific error message

Improve error messages in saveAndTestToken function (lines 244-279):

• Show more helpful messages that explain what's happening
• For 503 errors, tell the user the token is valid but model is loading
• Add a message that they can proceed to generate images even if model is loading
• Update the success message to be clearer

Update the generateImage function error handling (lines 115-202):

• Add console logging for debugging (can be removed later)
• Improve error messages to be more user-friendly
• Better handle the case where model is loading on first request

Expected Behavior After Fix

When a user enters a valid token:

• If model is ready: Show "✅ Token verified! Model is ready."
• If model is loading: Show "✅ Token verified! Model is loading (this is normal). You can proceed - it will be ready in ~20 seconds."
• If token is invalid: Show "❌ Invalid token. Please check your token."
• If rate limited: Show "✅ Token is valid but rate limit reached. Wait a moment before generating."
• If network error: Show "⚠️ Could not verify token. Check your internet connection."

The user should still be able to proceed with image generation even if the test shows model is loading, since the generateImage function already has retry logic.

Testing

The fix should work with the test token format: 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 (read permission)

Security Note

The test token above is just for reference and should not be committed to the repository.

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