fix: autosave wireguard conf files (#303)

* fix: autosave wireguard conf files

- Fix subscription to Interface and Peer updates topics
- Remove admin permissions validation
- Update file on peer deletion
- Change save condition to configured storage path only, as initialized interface is not nil

* Added  comment to peer config for prometheus exporter

internal/app/wireguard/wireguard_peers.go

@@ -4,11 +4,12 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"time"
+
 	"github.com/h44z/wg-portal/internal"
 	"github.com/h44z/wg-portal/internal/app"
 	"github.com/h44z/wg-portal/internal/domain"
 	"github.com/sirupsen/logrus"
-	"time"
 )
 
 func (m Manager) CreateDefaultPeer(ctx context.Context, userId domain.UserIdentifier) error {
@@ -253,6 +254,11 @@ func (m Manager) DeletePeer(ctx context.Context, id domain.PeerIdentifier) error
 		return fmt.Errorf("failed to delete peer %s: %w", id, err)
 	}
 
+	// Update routes after peers have changed
+	m.bus.Publish(app.TopicRouteUpdate, "peers updated")
+	// Update interface after peers have changed
+	m.bus.Publish(app.TopicPeerInterfaceUpdated, peer.InterfaceIdentifier)
+
 	return nil
 }