# MVP Definition: beast-dream-snow-loader

## Minimum Viable Product (MVP)

**Version:** 0.1.0b1 (Beta Pre-Release)

### Core Functionality

**Primary Goal:** Transform and load UniFi network infrastructure data into ServiceNow CMDB.

**What the MVP Does:**
1. **Transforms** UniFi data (hosts, sites, devices, clients) to ServiceNow CMDB format
2. **Loads** transformed data into ServiceNow via REST API
3. **Handles** relationships between entities (gateways → locations → devices → endpoints)
4. **Preserves** source data for audit and reconciliation
5. **Works** with ServiceNow instances (with or without CMDB plugins)

### Key Capabilities

**Data Transformation:**
- UniFi Host → ServiceNow Network Gateway CI
- UniFi Site → ServiceNow Location
- UniFi Device → ServiceNow Network Device CI
- UniFi Client → ServiceNow Endpoint
- Nested field flattening (JSON → flat ServiceNow schema)
- Field mapping with configuration

**ServiceNow Integration:**
- REST API client with authentication (API key, OAuth, Basic Auth)
- Table existence checking
- Record CRUD operations (create, read, update, query)
- Two-phase relationship linking
- Batch loading with dependency resolution

**Data Quality:**
- Type-safe models (Pydantic validation)
- Source data preservation
- Error handling and reporting
- Comprehensive unit tests

### Technical Requirements Met

✅ **Type Safety:** Full Pydantic models with validation  
✅ **Testing:** Unit tests for all models and transformers  
✅ **Documentation:** Complete guides and API documentation  
✅ **Quality:** Code formatting, linting, type checking configured  
✅ **Deployment:** PyPI package ready, CI/CD workflows configured  
✅ **Examples:** Working examples (smoke test, complete workflow)

### What's NOT in MVP (Planned for Future)

- **Table Creation:** Assumes tables exist or uses base `cmdb_ci` table
- **Incremental Sync:** Currently does full loads only
- **Retry Logic:** Basic error handling, no automatic retries
- **GraphQL API:** Using REST API (GraphQL investigation planned)
- **Import Sets:** Using direct REST API (Import Sets alternative planned)

### Success Criteria

**MVP is Complete When:**
- ✅ Can transform UniFi data to ServiceNow format
- ✅ Can load transformed data into ServiceNow
- ✅ Handles relationships correctly
- ✅ Works with ServiceNow instances (minimal or full setup)
- ✅ Has working examples
- ✅ Has comprehensive documentation
- ✅ Can be installed from PyPI
- ✅ All tests pass

**All criteria met. MVP is complete.**

### Use Cases Supported

1. **Network Asset Discovery:**
   - Load UniFi devices into ServiceNow CMDB
   - Track network infrastructure in ServiceNow

2. **CMDB Population:**
   - Create ServiceNow CMDB records from UniFi data
   - Maintain network device inventory

3. **Integration Completion:**
   - Complete UniFi → ServiceNow integration pipeline
   - Enable ServiceNow as source of truth for network assets

### Installation & Usage

**Install:**
```bash
pip install --pre beast-dream-snow-loader
```

**Basic Usage:**
```python
from beast_dream_snow_loader.models.unifi import UniFiHost
from beast_dream_snow_loader.transformers.unifi_to_snow import transform_host
from beast_dream_snow_loader.servicenow.api_client import ServiceNowAPIClient
from beast_dream_snow_loader.servicenow.loader import load_gateway_ci

# Transform UniFi data
snow_gateway = transform_host(unifi_host)

# Load into ServiceNow
client = ServiceNowAPIClient()
result = load_gateway_ci(client, snow_gateway)
```

**Complete Example:**
```bash
python examples/complete_workflow.py
```

### MVP Status: ✅ COMPLETE

All core functionality implemented, tested, and documented. Ready for beta pre-release publication.

