Add text selection and copy capability to terminal UI

internal/wireguard/status.go

@@ -15,6 +15,15 @@ const (
 	StatusConnected = "Connected"
 	// StatusDisconnected indicates a peer is not connected
 	StatusDisconnected = "Disconnected"
+
+	// QualityExcellent indicates handshake was very recent (< 30s)
+	QualityExcellent = "Excellent"
+	// QualityGood indicates handshake was recent (< 2m)
+	QualityGood = "Good"
+	// QualityFair indicates handshake was acceptable (< 5m)
+	QualityFair = "Fair"
+	// QualityPoor indicates handshake was old (> 5m)
+	QualityPoor = "Poor"
 )
 
 // PeerStatus represents the status of a WireGuard peer
@@ -25,7 +34,8 @@ type PeerStatus struct {
 	LatestHandshake time.Time `json:"latest_handshake"`
 	TransferRx      string    `json:"transfer_rx"`
 	TransferTx      string    `json:"transfer_tx"`
-	Status          string    `json:"status"` // "Connected" or "Disconnected"
+	Status          string    `json:"status"`            // "Connected" or "Disconnected"
+	Quality         string    `json:"quality,omitempty"` // "Excellent", "Good", "Fair", "Poor" (if connected)
 }
 
 // GetClientStatus checks if a specific client is connected
@@ -119,6 +129,20 @@ func parsePeersOutput(output string) []PeerStatus {
 	return peers
 }
 
+// CalculateQuality returns the connection quality based on handshake time
+func CalculateQuality(timeSinceHandshake time.Duration) string {
+	if timeSinceHandshake < 30*time.Second {
+		return QualityExcellent
+	}
+	if timeSinceHandshake < 2*time.Minute {
+		return QualityGood
+	}
+	if timeSinceHandshake < 5*time.Minute {
+		return QualityFair
+	}
+	return QualityPoor
+}
+
 // finalizePeerStatus determines the peer's status based on handshake time
 func finalizePeerStatus(peer *PeerStatus, handshake string, transfer string) PeerStatus {
 	peer.TransferRx = ""
@@ -140,13 +164,16 @@ func finalizePeerStatus(peer *PeerStatus, handshake string, transfer string) Pee
 		}
 	}
 
-	// Determine status based on handshake
+	// Determine status and quality based on handshake
 	if handshake != "" {
 		peer.LatestHandshake = parseHandshake(handshake)
+		timeSinceHandshake := time.Since(peer.LatestHandshake)
+
 		// Peer is considered connected if handshake is recent (within 5 minutes)
 		// This allows for ~12 missed keepalive intervals (at 25 seconds each)
-		if time.Since(peer.LatestHandshake) < 5*time.Minute {
+		if timeSinceHandshake < 5*time.Minute {
 			peer.Status = StatusConnected
+			peer.Quality = calculateQuality(timeSinceHandshake)
 		} else {
 			peer.Status = StatusDisconnected
 		}