# Vault Manager Extension - Setup Complete ✅

## Summary

Successfully created **realms-extension-vault** - a standalone extension repository that embeds vault functionality directly into the realm_backend canister, following the Realms CLI-first distribution model.

## What Was Created

### Repository Structure
```
realms-extension-vault/
├── backend/
│   ├── vault_lib/              # Core vault logic (embedded)
│   │   ├── candid_types.py     # ICRC types and service interfaces
│   │   ├── constants.py        # Canister IDs and configuration
│   │   ├── entities.py         # Database entities (Balance, Transaction)
│   │   └── ic_util_calls.py    # ICRC ledger/indexer calls
│   ├── __init__.py
│   └── entry.py                # Extension API (get_balance, transfer, etc.)
├── frontend/
│   ├── lib/extensions/vault/
│   ├── routes/(sidebar)/extensions/vault/
│   └── i18n/locales/extensions/vault/
├── tests/
│   └── test_vault.py           # Test suite structure
├── manifest.json               # Extension metadata
├── requirements.txt            # Python dependencies
├── README.md                   # Comprehensive documentation
├── CONTRIBUTING.md             # Developer guide
├── CHANGELOG.md                # Version history
├── LICENSE                     # MIT License
└── .gitignore                  # Git ignore rules
```

### Key Files

**manifest.json**
- Name: `vault`
- Version: `0.1.0`
- Realms compatibility: `>=0.1.0, <0.2.x`
- Entry points: `get_balance`, `get_status`, `get_transactions`, `transfer`, `refresh`
- Dependencies: kybra, kybra-simple-db, kybra-simple-logging

**backend/entry.py**
- `get_balance(args)` - Get balance for a principal
- `get_status(args)` - Get vault statistics
- `get_transactions(args)` - Get transaction history
- `transfer(args)` - Transfer tokens (admin only)
- `refresh(args)` - Sync with ICRC ledger

## Architecture Decision

### ✅ Embedded Vault Model (Implemented)
- Vault logic runs **inside realm_backend canister**
- Direct function calls (no inter-canister overhead)
- Atomic operations with realm entities
- Self-contained extension package

### ❌ Separate Vault Canister (Rejected)
- Would require complex infrastructure management
- Breaks CLI-first installation model
- Adds inter-canister call latency
- Not suitable for extension distribution

## How It Works

### Installation Flow
```bash
# Extension developer tests
realms extension install --source /path/to/realms-extension-vault/

# Realm operator installs
realms extension install vault \
  --from https://github.com/smart-social-contracts/realms-extension-vault/releases/download/v0.1.0/vault-0.1.0.zip
```

### Deployment
```
realm_backend canister
├── core/ (Realms core)
├── ggg/ (Realms entities)
├── extension_packages/
│   └── vault/        ← Extension installed here
│       ├── vault_lib/
│       │   ├── candid_types.py
│       │   ├── entities.py
│       │   └── ic_util_calls.py
│       └── entry.py
└── main.py
```

### Runtime
```python
# Treasury entity calls extension directly (same canister)
from core.extensions import extension_async_call

result = yield extension_async_call("vault", "get_balance", args)
# No inter-canister call - direct Python function call
```

## Next Steps

### 1. Test the Extension

```bash
# Clone realms
cd /home/user/dev/smartsocialcontracts/realms-vault-integration-2/realms
git checkout main  # or specific version tag

# Install extension
realms extension install --source ../realms-extension-vault/

# Deploy and test
dfx start --clean --background
realms realm deploy --network local

# Verify installation
dfx canister call realm_backend extension_call '("vault", "get_status", "{}")'
```

### 2. Implement Missing Core Logic

The `entry.py` file currently has the API structure but needs some core functions from the original vault. You may want to extract and adapt:

- Transaction history syncing logic
- Balance calculation algorithms  
- Admin permission checks
- Test mode functionality

### 3. Add Frontend Components

Copy and adapt Svelte components:
```bash
# Already copied from realms/extensions/vault/frontend/
# May need updates for new architecture
```

### 4. Write Tests

Complete the test suite in `tests/test_vault.py`:
- Unit tests for vault_lib functions
- Integration tests with mock ICRC canisters
- Treasury integration tests

### 5. Package for Distribution

```bash
# When ready for release
cd realms-extension-vault
realms extension package .
# Creates: vault-0.1.0.zip
```

### 6. Publish Release

```bash
git tag -a v0.1.0 -m "Initial release"
git push origin v0.1.0

gh release create v0.1.0 vault-0.1.0.zip \
  --title "Vault Manager v0.1.0" \
  --notes "$(cat CHANGELOG.md)"
```

## Benefits Achieved

### ✅ For Extension Developers
- Simple project structure
- No infrastructure management
- Standard Python development workflow
- Easy to test and debug

### ✅ For Realm Operators
- One-command installation
- No separate canister deployment
- Single canister to manage
- Lower cycles cost

### ✅ For System Architecture
- Better performance (no inter-canister calls)
- Atomic operations with realm data
- Simpler deployment pipeline
- Cleaner extension model

## Documentation

- **README.md** - User-facing documentation with installation and usage
- **CONTRIBUTING.md** - Developer guide for contributors
- **CHANGELOG.md** - Version history
- **This file** - Setup summary and next steps

## Repository

- **GitHub**: https://github.com/smart-social-contracts/realms-extension-vault
- **Branch**: main
- **Commit**: 6729f1b - Initial vault manager extension structure

## Compatibility

- **Realms**: >=0.1.0, <0.2.x
- **Python**: 3.10.7
- **Kybra**: >=0.10.0

## Status

🟡 **In Development** - Core structure complete, implementation in progress

### Completed ✅
- [x] Repository structure
- [x] Extension manifest
- [x] Backend entry points (API signatures)
- [x] Vault library modules copied
- [x] Frontend components copied
- [x] Documentation (README, CONTRIBUTING, CHANGELOG)
- [x] License and gitignore
- [x] Test structure

### To Do 🔨
- [ ] Complete entry.py implementations
- [ ] Adapt vault core logic for embedded model
- [ ] Write comprehensive tests
- [ ] Test with actual Realms deployment
- [ ] Update frontend for new architecture
- [ ] Create packaging script
- [ ] First release (v0.1.0)

---

**Created**: 2025-10-16  
**Repository**: https://github.com/smart-social-contracts/realms-extension-vault  
**Model**: Embedded Extension (CLI-First Distribution)
