# Inventory Management System - Implementation Status

## ✅ Completed Features

### 1. Stock Transfers ✅
- **Routes**: 
  - `GET /inventory/transfers` - List all stock transfers
  - `GET /inventory/transfers/new` - Create new transfer form
  - `POST /inventory/transfers` - Create transfer (creates dual movements)
- **Templates**: `transfers/list.html`, `transfers/form.html`
- **Functionality**: Complete transfer between warehouses with validation

### 2. Stock Adjustments ✅
- **Routes**:
  - `GET /inventory/adjustments` - List all adjustments
  - `GET /inventory/adjustments/new` - Create adjustment form
  - `POST /inventory/adjustments` - Record adjustment
- **Templates**: `adjustments/list.html`, `adjustments/form.html`
- **Functionality**: Dedicated interface for stock corrections

### 3. Stock Item History ✅
- **Route**: `GET /inventory/items/<id>/history` - View movement history for item
- **Template**: `stock_items/history.html`
- **Functionality**: Complete audit trail with filters

### 4. Additional Stock Level Views ✅
- **Routes**:
  - `GET /inventory/stock-levels/warehouse/<warehouse_id>` - Stock levels for warehouse
  - `GET /inventory/stock-levels/item/<item_id>` - Stock levels for item across warehouses
- **Templates**: `stock_levels/warehouse.html`, `stock_levels/item.html`

### 5. Purchase Order Management ✅
- **Routes**:
  - `GET/POST /inventory/purchase-orders/<id>/edit` - Edit purchase order
  - `POST /inventory/purchase-orders/<id>/send` - Mark as sent
  - `POST /inventory/purchase-orders/<id>/cancel` - Cancel PO
  - `POST /inventory/purchase-orders/<id>/delete` - Delete PO
  - `POST /inventory/purchase-orders/<id>/receive` - Receive PO (already existed)
- **Functionality**: Complete PO lifecycle management

### 6. Supplier Code Validation ✅
- **Fix**: Added duplicate code check in `new_supplier` and `edit_supplier` routes
- **Error Handling**: User-friendly error messages

### 7. Inventory Reports ✅
- **Routes**: `GET /inventory/reports` (dashboard), `GET /inventory/reports/valuation`, `GET /inventory/reports/movement-history`, `GET /inventory/reports/turnover`, `GET /inventory/reports/low-stock`
- **Templates**: Report templates (dashboard, valuation, movement_history, turnover, low_stock) are implemented.

## ✅ API Endpoints (REST API v1)

The following inventory API endpoints are implemented under `/api/v1` (require inventory module and `read:projects` / `write:projects` scopes):

- **Transfers**: `GET /api/v1/inventory/transfers` (list with date filter and pagination), `POST /api/v1/inventory/transfers` (create), `GET /api/v1/inventory/transfers/<reference_id>` (get one)
- **Reports**: `GET /api/v1/inventory/reports/valuation`, `GET /api/v1/inventory/reports/movement-history` (with pagination), `GET /api/v1/inventory/reports/turnover`, `GET /api/v1/inventory/reports/low-stock`
- **Existing**: Suppliers and Purchase Order CRUD, stock items, warehouses, stock-levels, `POST /api/v1/inventory/movements`

See [REST_API.md](../api/REST_API.md) and [API_TOKEN_SCOPES.md](../api/API_TOKEN_SCOPES.md) for details.

## ⏳ Still Pending

### 1. API Endpoints (remaining)
- Optional: `read:inventory` / `write:inventory` scopes for closer alignment with web permissions
- Optional: `GET /api/v1/inventory/movements` (list movements with filters)

### 2. Menu Updates
- Add "Transfers" link to inventory menu
- Add "Adjustments" link to inventory menu
- Add "Reports" link to inventory menu
- Update navigation active states

### 3. Tests
- Supplier model and route tests
- Purchase Order model and route tests
- **Done**: API tests for inventory transfers (`tests/test_routes/test_api_v1_inventory_transfers.py`) and inventory reports (`tests/test_routes/test_api_v1_inventory_reports.py`)

### 4. Documentation
- User guide (`docs/features/INVENTORY_MANAGEMENT.md`)
- API documentation (`docs/features/INVENTORY_API.md`)
- Update main README

## 📝 Notes

1. Most core functionality has been implemented
2. Report templates (dashboard, valuation, movement_history, turnover, low_stock) are implemented
3. Menu navigation needs to be updated to include new routes
4. API endpoints can be added incrementally
5. Tests should be created as per project standards

## Next Steps

1. Update menu in `base.html` (Transfers, Adjustments, Reports links)
2. Create comprehensive tests for suppliers and purchase orders (web and API)
3. Write documentation (user guide, INVENTORY_API.md)
