[client] Add output similar to wg show to the debug package (#3922)

client/internal/peer/status.go

@@ -3,6 +3,7 @@ package peer
 import (
 	"context"
 	"errors"
+	"fmt"
 	"net/netip"
 	"slices"
 	"sync"
@@ -32,6 +33,10 @@ type ResolvedDomainInfo struct {
 	ParentDomain domain.Domain
 }
 
+type WGIfaceStatus interface {
+	FullStats() (*configurer.Stats, error)
+}
+
 type EventListener interface {
 	OnEvent(event *proto.SystemEvent)
 }
@@ -202,6 +207,7 @@ type Status struct {
 	ingressGwMgr *ingressgw.Manager
 
 	routeIDLookup routeIDLookup
+	wgIface       WGIfaceStatus
 }
 
 // NewRecorder returns a new Status instance
@@ -1078,6 +1084,23 @@ func (d *Status) GetEventHistory() []*proto.SystemEvent {
 	return d.eventQueue.GetAll()
 }
 
+func (d *Status) SetWgIface(wgInterface WGIfaceStatus) {
+	d.mux.Lock()
+	defer d.mux.Unlock()
+
+	d.wgIface = wgInterface
+}
+
+func (d *Status) PeersStatus() (*configurer.Stats, error) {
+	d.mux.Lock()
+	defer d.mux.Unlock()
+	if d.wgIface == nil {
+		return nil, fmt.Errorf("wgInterface is nil, cannot retrieve peers status")
+	}
+
+	return d.wgIface.FullStats()
+}
+
 type EventQueue struct {
 	maxSize int
 	events  []*proto.SystemEvent