Extract printHealthClients from debug printHealth to reduce complexity

proxy/internal/debug/client.go

@@ -83,6 +83,10 @@ func (c *Client) printHealth(data map[string]any) {
 		}
 	}
 
+	c.printHealthClients(data)
+}
+
+func (c *Client) printHealthClients(data map[string]any) {
 	clients, ok := data["clients"].(map[string]any)
 	if !ok || len(clients) == 0 {
 		return

proxy/internal/debug/client_test.go

@@ -0,0 +1,71 @@
+package debug
+
+import (
+	"bytes"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestPrintHealth_WithCertsAndClients(t *testing.T) {
+	var buf bytes.Buffer
+	c := NewClient("localhost:8444", false, &buf)
+
+	data := map[string]any{
+		"status":               "ok",
+		"uptime":               "1h30m",
+		"management_connected": true,
+		"all_clients_healthy":  true,
+		"certs_total":          float64(3),
+		"certs_ready":          float64(2),
+		"certs_pending":        float64(1),
+		"certs_failed":         float64(0),
+		"certs_ready_domains":  []any{"a.example.com", "b.example.com"},
+		"certs_pending_domains": []any{"c.example.com"},
+		"clients": map[string]any{
+			"acc-1": map[string]any{
+				"healthy":              true,
+				"management_connected": true,
+				"signal_connected":     true,
+				"relays_connected":     float64(1),
+				"relays_total":         float64(2),
+				"peers_connected":      float64(3),
+				"peers_total":          float64(5),
+				"peers_p2p":            float64(2),
+				"peers_relayed":        float64(1),
+				"peers_degraded":       float64(0),
+			},
+		},
+	}
+
+	c.printHealth(data)
+	out := buf.String()
+
+	assert.Contains(t, out, "Status: ok")
+	assert.Contains(t, out, "Uptime: 1h30m")
+	assert.Contains(t, out, "yes") // management_connected
+	assert.Contains(t, out, "2 ready, 1 pending, 0 failed (3 total)")
+	assert.Contains(t, out, "a.example.com")
+	assert.Contains(t, out, "c.example.com")
+	assert.Contains(t, out, "acc-1")
+}
+
+func TestPrintHealth_Minimal(t *testing.T) {
+	var buf bytes.Buffer
+	c := NewClient("localhost:8444", false, &buf)
+
+	data := map[string]any{
+		"status":               "ok",
+		"uptime":               "5m",
+		"management_connected": false,
+		"all_clients_healthy":  false,
+	}
+
+	c.printHealth(data)
+	out := buf.String()
+
+	assert.Contains(t, out, "Status: ok")
+	assert.Contains(t, out, "Uptime: 5m")
+	assert.NotContains(t, out, "Certificates")
+	assert.NotContains(t, out, "ACCOUNT ID")
+}