# Write Tools Test Results

## Summary
All 4 write tools implemented and working correctly with test.duckdb.

## Tools Implemented
1. ✅ `create_cyclic_recording_pattern` - Creates reusable recording patterns
2. ✅ `create_dataset` - Creates datasets (organise/test/train types)
3. ✅ `create_location` - Creates locations with GPS coordinates and timezone
4. ✅ `create_cluster` - Creates clusters within locations

## Test Results

### Pattern Creation
```
ID: kUAY7khtz7Q3
Record: 30s, Sleep: 90s
Created: 2026-01-27 12:50:09+13
```

### Dataset Creation
```
ID: 9aWkhyBujmZG
Name: "Test Dataset 2026-01-27"
Type: test
Created: 2026-01-27 12:50:10+13
```

### Location Creation
```
ID: oWibFXedzpng
Name: "Test Location Wellington"
Coordinates: -41.2865, 174.7762
Timezone: Pacific/Auckland
Dataset: Test Dataset 2026-01-27
Created: 2026-01-27 12:55:33+13
```

### Cluster Creation
```
ID: zcuMt8WCy6tD
Name: "Test Cluster Alpha"
Sample Rate: 48000 Hz
Pattern: kUAY7khtz7Q3 (30s/90s)
Location: Test Location Wellington
Dataset: Test Dataset 2026-01-27
Created: 2026-01-27 12:55:50+13
```

### Validation Tests

✅ Empty name validation: `name cannot be empty`
✅ Negative value validation: `record_seconds must be positive (got -10)`
✅ Location/dataset mismatch: `location 'Test Location Wellington' (ID: oWibFXedzpng) does not belong to dataset 'MOK call site 1' (ID: vgIr9JSH_lFj)`

### Database Verification

Complete hierarchy query confirms all relationships:
```
cluster: Test Cluster Alpha
location: Test Location Wellington  
dataset: Test Dataset 2026-01-27
pattern: 30s record / 90s sleep
```

## Key Implementation Details

1. **Connection Management**: Tool-level open/close (no singleton)
2. **Timestamp Handling**: Explicitly set `CURRENT_TIMESTAMP` in INSERT for schema compatibility
3. **ID Generation**: Server-side using nanoid library (12-character IDs)
4. **Transactions**: All operations use transactions with rollback on error
5. **Validation**: Multi-layer (input → business logic → database constraints)
6. **Foreign Keys**: Explicit verification with clear error messages
7. **Business Rules**: Location must belong to specified dataset (enforced)

## Files Modified/Created

### New Files (6)
- `db/nanoid.go` - ID generation utility
- `tools/write_pattern.go` - create_cyclic_recording_pattern tool
- `tools/write_dataset.go` - create_dataset tool
- `tools/write_location.go` - create_location tool
- `tools/write_cluster.go` - create_cluster tool
- `shell_scripts/test_write_tools.sh` - Comprehensive test script

### Modified Files (4)
- `db/db.go` - Refactored to tool-level connection management
- `db/types.go` - Added CyclicRecordingPattern type
- `tools/sql.go` - Updated to use OpenReadOnlyDB()
- `main.go` - Registered 4 new write tools

## Test Database
All tests run against `db/test.duckdb` to preserve production data integrity.