DEPLOYMENT-SUMMARY.md

🎯 Deployment Summary: HF Dataset Integration

✅ What Changed

🔄 Major Update: File Storage → HF Dataset

Before:

• Used local devices.json file
• Data lost on Space restart
• Permission issues in Docker container

After:

• Uses Hugging Face Dataset for persistent storage
• Data survives Space restarts
• No file permission issues
• Automatic fallback to in-memory storage

📋 New Files Added

1. hf-dataset.js - HF Dataset manager class
2. HF-DATASET-SETUP.md - Setup documentation
3. DEPLOYMENT-SUMMARY.md - This summary

🔧 Configuration Required

Required Secrets in HF Space:

FIREBASE_SERVICE_ACCOUNT = {your firebase config JSON}
HF_TOKEN = hf_your_write_token_here

Optional Secrets:

HF_DATASET_ID = Detomo/houzou-devices

🚀 How to Configure

1. Generate HF Token

1. Go to https://huggingface.co/settings/tokens
2. Create new token with Write permissions
3. Copy the token

2. Add to Space Secrets

1. Go to Space Settings → Secrets and variables
2. Add HF_TOKEN with your token value

3. Deploy

• Changes are already pushed
• Space will rebuild automatically
• Dataset will be created automatically

📊 Features

✅ Automatic Dataset Management

• Creates Detomo/houzou-devices dataset if not exists
• Handles permissions automatically
• Stores device tokens in devices.json

✅ Robust Error Handling

• Graceful fallback to in-memory storage
• Detailed logging for troubleshooting
• Continues operation even if HF API fails

✅ Persistent Storage

• Device tokens survive Space restarts
• Automatic backup to HF dataset
• Version control for device data

🔍 Verification Steps

1. Check Space Status

curl https://detomo-houzou-notification-server.hf.space/

Should show:

{
  "hfDataset": {
    "enabled": true,
    "datasetId": "Detomo/houzou-devices",
    "hasToken": true
  }
}

2. Check Dataset

• Go to: https://huggingface.co/datasets/Detomo/houzou-devices
• Should see devices.json with your device data

3. Test Device Registration

curl -X POST https://detomo-houzou-notification-server.hf.space/register-token \
  -H "Content-Type: application/json" \
  -d '{
    "token": "test-token",
    "deviceId": "test-device",
    "platform": "test"
  }'

🐛 Troubleshooting

Dataset Not Working?

1. Check HF_TOKEN is set correctly
2. Verify token has Write permissions
3. Check Space logs for errors
4. Server will fall back to in-memory storage

Common Issues:

403 Forbidden: Token lacks write permissions 404 Not Found: Dataset will be auto-created Rate Limiting: HF API limits, server will retry

🎯 Benefits

• ✅ Persistent: Data survives restarts
• ✅ Reliable: Automatic fallback mechanisms
• ✅ Scalable: No file permission issues
• ✅ Traceable: Version history in dataset
• ✅ Secure: Tokens stored in HF infrastructure

🔄 Migration Status

• ✅ Code updated to use HF Dataset
• ✅ Automatic dataset creation
• ✅ Error handling implemented
• ✅ Documentation provided
• ✅ Changes deployed to Space

📋 Next Steps

1. Configure HF Token (required)
2. Verify deployment works
3. Test device registration from Flutter app
4. Monitor dataset for device data

---

Status: Ready for production! 🚀

The server now uses HF Dataset for persistent storage and will automatically handle device tokens across Space restarts.