# VTL Endpoints Verification

## ✅ Implementation Status

The VTL endpoints **ARE implemented** in the codebase. The routes are registered in the router.

## 🔍 Verification Steps

### 1. Check if Server Needs Restart

The server must be restarted after code changes. Check if you're running the latest build:

```bash
# Rebuild the server
cd backend
go build -o bin/calypso-api ./cmd/calypso-api

# Restart the server (stop old process, start new one)
# If using systemd:
sudo systemctl restart calypso-api

# Or if running manually:
pkill calypso-api
./bin/calypso-api -config config.yaml.example
```

### 2. Verify Routes are Registered

The routes are defined in `backend/internal/common/router/router.go` lines 106-120:

```go
// Virtual Tape Libraries
vtlHandler := tape_vtl.NewHandler(db, log)
vtlGroup := protected.Group("/tape/vtl")
vtlGroup.Use(requirePermission("tape", "read"))
{
    vtlGroup.GET("/libraries", vtlHandler.ListLibraries)
    vtlGroup.POST("/libraries", vtlHandler.CreateLibrary)
    vtlGroup.GET("/libraries/:id", vtlHandler.GetLibrary)
    vtlGroup.DELETE("/libraries/:id", vtlHandler.DeleteLibrary)
    vtlGroup.GET("/libraries/:id/drives", vtlHandler.GetLibraryDrives)
    vtlGroup.GET("/libraries/:id/tapes", vtlHandler.GetLibraryTapes)
    vtlGroup.POST("/libraries/:id/tapes", vtlHandler.CreateTape)
    vtlGroup.POST("/libraries/:id/load", vtlHandler.LoadTape)
    vtlGroup.POST("/libraries/:id/unload", vtlHandler.UnloadTape)
}
```

### 3. Test Endpoint Registration

After restarting, test if routes are accessible:

```bash
# This should return 401 (unauthorized) not 404 (not found)
curl http://localhost:8080/api/v1/tape/vtl/libraries

# With auth, should return 200 with empty array
curl http://localhost:8080/api/v1/tape/vtl/libraries \
  -H "Authorization: Bearer $TOKEN"
```

**If you get 404:**
- Server is running old code → Restart required
- Routes not compiled → Rebuild required

**If you get 401:**
- Routes are working! → Just need authentication

**If you get 403:**
- Routes are working! → Permission issue (check user has `tape:read`)

### 4. Check Handler Implementation

Verify handlers exist:
- ✅ `backend/internal/tape_vtl/handler.go` - All handlers implemented
- ✅ `backend/internal/tape_vtl/service.go` - All services implemented

## 🚀 Quick Fix

If endpoints return 404:

1. **Stop the current server**
2. **Rebuild**:
   ```bash
   cd backend
   go build -o bin/calypso-api ./cmd/calypso-api
   ```
3. **Restart**:
   ```bash
   ./bin/calypso-api -config config.yaml.example
   ```

## 📋 Expected Endpoints

All these endpoints should be available after restart:

| Method | Endpoint | Handler |
|--------|----------|---------|
| GET | `/api/v1/tape/vtl/libraries` | ListLibraries |
| POST | `/api/v1/tape/vtl/libraries` | CreateLibrary |
| GET | `/api/v1/tape/vtl/libraries/:id` | GetLibrary |
| DELETE | `/api/v1/tape/vtl/libraries/:id` | DeleteLibrary |
| GET | `/api/v1/tape/vtl/libraries/:id/drives` | GetLibraryDrives |
| GET | `/api/v1/tape/vtl/libraries/:id/tapes` | GetLibraryTapes |
| POST | `/api/v1/tape/vtl/libraries/:id/tapes` | CreateTape |
| POST | `/api/v1/tape/vtl/libraries/:id/load` | LoadTape |
| POST | `/api/v1/tape/vtl/libraries/:id/unload` | UnloadTape |

## 🔧 Debugging

If still getting 404 after restart:

1. **Check server logs** for route registration
2. **Verify compilation** succeeded (no errors)
3. **Check router.go** is being used (not cached)
4. **Test with curl** to see exact error:
   ```bash
   curl -v http://localhost:8080/api/v1/tape/vtl/libraries \
     -H "Authorization: Bearer $TOKEN"
   ```

The `-v` flag will show the full HTTP response including headers.