feat: Add EnsureCentralService + improved tests

Linter-contributed improvements:
- EnsureCentralService() method: registers Central's own domain as a
  service from config, with cleanup on domain change
- Tests for EnsureCentralService: registration, idempotency, domain
  change cleanup, no-domain-is-noop
- Improved reconciliation tests with Central as a registered service
- Certbot handler cleanup

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

internal/api/v1/handlers.go

@@ -320,8 +320,9 @@ func (api *API) UpdateGlobalConfig(w http.ResponseWriter, r *http.Request) {
 
 	slog.Info("global config updated")
 
-	// Reload DDNS if config changed
+	// Reload DDNS and re-register Central's service if config changed
 	go api.reloadDDNSIfEnabled()
+	go api.EnsureCentralService()
 
 	respondMessage(w, http.StatusOK, "Config updated successfully")
 }

internal/api/v1/handlers_certbot.go

@@ -3,8 +3,10 @@ package v1
 import (
 	"fmt"
 	"net/http"
+	"os"
 	"strings"
 
+	"github.com/wild-cloud/wild-central/internal/certbot"
 	"github.com/wild-cloud/wild-central/internal/config"
 	"github.com/wild-cloud/wild-central/internal/services"
 )
@@ -58,6 +60,37 @@ func (api *API) CertStatus(w http.ResponseWriter, r *http.Request) {
 		certs = append(certs, entry)
 	}
 
+	// Include standalone certs from disk (e.g. wildcard certs) not tied to a service.
+	certsDir := "/etc/haproxy/certs/"
+	if entries, err := os.ReadDir(certsDir); err == nil {
+		for _, e := range entries {
+			if !strings.HasSuffix(e.Name(), ".pem") {
+				continue
+			}
+			domain := strings.TrimSuffix(e.Name(), ".pem")
+			if seen[domain] {
+				continue
+			}
+			seen[domain] = true
+			status := api.certbot.GetStatus(domain)
+			if !status.Exists {
+				// PEM file exists but openssl couldn't parse it — skip
+				continue
+			}
+			// Use the certbot live directory to confirm this is a certbot-managed cert
+			source := "standalone"
+			certLive := certbot.CertPath(domain)
+			if _, err := os.Stat(certLive); err == nil {
+				source = "certbot"
+			}
+			certs = append(certs, map[string]any{
+				"domain": domain,
+				"source": source,
+				"cert":   status,
+			})
+		}
+	}
+
 	respondJSON(w, http.StatusOK, map[string]any{
 		"configured":   centralDomain != "",
 		"domain":       centralDomain,

internal/api/v1/handlers_reconciliation_test.go

@@ -2,6 +2,8 @@ package v1
 
 import (
 	"fmt"
+	"os"
+	"path/filepath"
 	"strings"
 	"testing"
 
@@ -81,13 +83,32 @@ func TestReconciliation_HAProxyConfigFromServices(t *testing.T) {
 		}
 	}
 
-	// Add Central's own domain (as reconcileNetworking does from config)
-	centralDomain := "central.payne.io"
-	httpRoutes = append([]haproxy.HTTPRoute{{
-		Name:    "wild-central",
-		Domain:  centralDomain,
-		Backend: "127.0.0.1:5055",
-	}}, httpRoutes...)
+	// Central registers itself as a service; add it to the test data
+	if err := api.services.Register(services.Service{
+		Domain:  "central.payne.io",
+		Source:  "central",
+		Backend: services.Backend{Address: "127.0.0.1:5055", Type: services.BackendHTTP},
+		Reach:   services.ReachInternal,
+		TLS:     services.TLSTerminate,
+	}); err != nil {
+		t.Fatalf("Register central failed: %v", err)
+	}
+	// Re-list to pick up Central
+	svcs, err = api.services.List()
+	if err != nil {
+		t.Fatalf("List failed: %v", err)
+	}
+	httpRoutes = nil
+	for _, svc := range svcs {
+		if svc.Backend.Type == services.BackendHTTP {
+			httpRoutes = append(httpRoutes, haproxy.HTTPRoute{
+				Name:       svc.Domain,
+				Domain:     svc.Domain,
+				Backend:    svc.Backend.Address,
+				HealthPath: svc.Backend.Health,
+			})
+		}
+	}
 
 	cfg := api.haproxy.GenerateWithOpts(instanceRoutes, nil, haproxy.GenerateOpts{
 		HTTPRoutes: httpRoutes,
@@ -97,7 +118,7 @@ func TestReconciliation_HAProxyConfigFromServices(t *testing.T) {
 	// --- Assertions on HAProxy config ---
 
 	// L7 services have exact-match ACLs in the SNI frontend
-	if !strings.Contains(cfg, "acl is_l7_wild_central req_ssl_sni -m str central.payne.io") {
+	if !strings.Contains(cfg, "acl is_l7_central_payne_io req_ssl_sni -m str central.payne.io") {
 		t.Errorf("expected L7 exact-match ACL for central.payne.io:\n%s", cfg)
 	}
 	if !strings.Contains(cfg, "acl is_l7_wild_cloud_payne_io req_ssl_sni -m str wild-cloud.payne.io") {
@@ -123,7 +144,7 @@ func TestReconciliation_HAProxyConfigFromServices(t *testing.T) {
 	}
 
 	// L7 ACLs appear BEFORE L4 wildcard ACLs
-	l7Pos := strings.Index(cfg, "is_l7_wild_central")
+	l7Pos := strings.Index(cfg, "is_l7_central_payne_io")
 	l4WildcardPos := strings.Index(cfg, "req_ssl_sni -m end .cloud.payne.io")
 	if l7Pos > l4WildcardPos {
 		t.Errorf("L7 exact matches (pos %d) must appear before L4 wildcards (pos %d)", l7Pos, l4WildcardPos)
@@ -244,12 +265,25 @@ func TestReconciliation_DnsmasqConfigFromServices(t *testing.T) {
 	}
 }
 
-// TestReconciliation_CentralDomainInHAProxy verifies that the Central domain
-// from global config is injected as the first L7 HTTP route.
+// TestReconciliation_CentralDomainInHAProxy verifies that Central, registered
+// as a service, produces correct HAProxy L7 routes.
 func TestReconciliation_CentralDomainInHAProxy(t *testing.T) {
 	api, _ := setupTestAPI(t)
 
-	// Register one HTTP service
+	centralPort := 15055
+
+	// Register Central as a service (as EnsureCentralService does)
+	if err := api.services.Register(services.Service{
+		Domain:  "central.payne.io",
+		Source:  "central",
+		Backend: services.Backend{Address: fmt.Sprintf("127.0.0.1:%d", centralPort), Type: services.BackendHTTP},
+		Reach:   services.ReachInternal,
+		TLS:     services.TLSTerminate,
+	}); err != nil {
+		t.Fatalf("Register central failed: %v", err)
+	}
+
+	// Register another HTTP service
 	if err := api.services.Register(services.Service{
 		Domain:  "my-app.payne.io",
 		Source:  "wild-works",
@@ -272,16 +306,6 @@ func TestReconciliation_CentralDomainInHAProxy(t *testing.T) {
 		}
 	}
 
-	// Central domain goes first (as reconcileNetworking does).
-	// Uses port 15055 — must match the running port, NOT default 5055.
-	centralDomain := "central.payne.io"
-	centralPort := 15055
-	httpRoutes = append([]haproxy.HTTPRoute{{
-		Name:    "wild-central",
-		Domain:  centralDomain,
-		Backend: fmt.Sprintf("127.0.0.1:%d", centralPort),
-	}}, httpRoutes...)
-
 	cfg := api.haproxy.GenerateWithOpts(nil, nil, haproxy.GenerateOpts{
 		HTTPRoutes: httpRoutes,
 	})
@@ -294,22 +318,9 @@ func TestReconciliation_CentralDomainInHAProxy(t *testing.T) {
 		t.Errorf("expected Central domain Host ACL:\n%s", cfg)
 	}
 
-	// Central backend must use the configured port (15055), not default 5055
-	if !strings.Contains(cfg, "server s0 127.0.0.1:15055") {
-		t.Errorf("Central backend must use port 15055, not 5055:\n%s", cfg)
-	}
-	if strings.Contains(cfg, "server s0 127.0.0.1:5055") {
-		t.Errorf("Central backend must NOT use default port 5055:\n%s", cfg)
-	}
-
-	// Central route should be the first L7 route
-	centralPos := strings.Index(cfg, "is_l7_wild_central")
-	appPos := strings.Index(cfg, "is_l7_my_app_payne_io")
-	if centralPos < 0 || appPos < 0 {
-		t.Fatalf("expected both L7 ACLs in config:\n%s", cfg)
-	}
-	if centralPos > appPos {
-		t.Errorf("Central domain (pos %d) should appear before app domain (pos %d)", centralPos, appPos)
+	// Central backend must use the configured port (15055)
+	if !strings.Contains(cfg, fmt.Sprintf("server s0 127.0.0.1:%d", centralPort)) {
+		t.Errorf("Central backend must use port %d:\n%s", centralPort, cfg)
 	}
 }
 
@@ -361,3 +372,96 @@ func TestReconciliation_TCPPassthroughDNSTarget(t *testing.T) {
 		t.Errorf("tcp-passthrough DNS must NOT point to Central IP:\n%s", dnsmasqCfg)
 	}
 }
+
+// writeTestConfig writes a minimal global config with the given Central domain.
+func writeTestConfig(t *testing.T, dataDir, centralDomain string) {
+	t.Helper()
+	configPath := filepath.Join(dataDir, "config.yaml")
+	content := fmt.Sprintf("cloud:\n  central:\n    domain: %s\n", centralDomain)
+	if err := os.WriteFile(configPath, []byte(content), 0644); err != nil {
+		t.Fatalf("write config: %v", err)
+	}
+}
+
+func TestEnsureCentralService_RegistersWhenDomainConfigured(t *testing.T) {
+	api, dataDir := setupTestAPI(t)
+	api.SetPort(15055)
+	writeTestConfig(t, dataDir, "central.example.com")
+
+	api.EnsureCentralService()
+
+	svc, err := api.services.Get("central.example.com")
+	if err != nil {
+		t.Fatalf("expected Central service to be registered: %v", err)
+	}
+	if svc.Source != "central" {
+		t.Errorf("source = %q, want %q", svc.Source, "central")
+	}
+	if svc.Backend.Address != "127.0.0.1:15055" {
+		t.Errorf("backend = %q, want %q", svc.Backend.Address, "127.0.0.1:15055")
+	}
+	if svc.TLS != services.TLSTerminate {
+		t.Errorf("tls = %q, want %q", svc.TLS, services.TLSTerminate)
+	}
+}
+
+func TestEnsureCentralService_Idempotent(t *testing.T) {
+	api, dataDir := setupTestAPI(t)
+	api.SetPort(15055)
+	writeTestConfig(t, dataDir, "central.example.com")
+
+	api.EnsureCentralService()
+	api.EnsureCentralService() // second call should be a no-op
+
+	svcs, _ := api.services.List()
+	count := 0
+	for _, s := range svcs {
+		if s.Source == "central" {
+			count++
+		}
+	}
+	if count != 1 {
+		t.Errorf("expected 1 central service, got %d", count)
+	}
+}
+
+func TestEnsureCentralService_CleansUpOnDomainChange(t *testing.T) {
+	api, dataDir := setupTestAPI(t)
+	api.SetPort(15055)
+
+	// Register with old domain
+	writeTestConfig(t, dataDir, "old.example.com")
+	api.EnsureCentralService()
+
+	// Change domain
+	writeTestConfig(t, dataDir, "new.example.com")
+	api.EnsureCentralService()
+
+	// Old domain should be gone
+	if _, err := api.services.Get("old.example.com"); err == nil {
+		t.Error("old Central service should have been deregistered")
+	}
+	// New domain should exist
+	svc, err := api.services.Get("new.example.com")
+	if err != nil {
+		t.Fatalf("new Central service should be registered: %v", err)
+	}
+	if svc.Source != "central" {
+		t.Errorf("source = %q, want %q", svc.Source, "central")
+	}
+}
+
+func TestEnsureCentralService_NoDomainIsNoop(t *testing.T) {
+	api, _ := setupTestAPI(t)
+	api.SetPort(15055)
+	// Default config has no Central domain
+
+	api.EnsureCentralService()
+
+	svcs, _ := api.services.List()
+	for _, s := range svcs {
+		if s.Source == "central" {
+			t.Error("no Central service should be registered when domain is empty")
+		}
+	}
+}

internal/api/v1/helpers.go

@@ -16,6 +16,47 @@ import (
 	"github.com/wild-cloud/wild-central/internal/sse"
 )
 
+// EnsureCentralService registers (or updates) Central's own domain as a service
+// so it participates in DNS, HAProxy routing, and TLS cert tracking like any
+// other service. Called on startup and when global config changes.
+func (api *API) EnsureCentralService() {
+	centralDomain := api.getCentralDomain()
+	port := api.getRunningPort()
+	backend := fmt.Sprintf("127.0.0.1:%d", port)
+
+	// Check if the current registration already matches — skip if so.
+	if centralDomain != "" {
+		if existing, _ := api.services.Get(centralDomain); existing != nil &&
+			existing.Source == "central" &&
+			existing.Backend.Address == backend {
+			return
+		}
+	}
+
+	// Clean up stale Central registrations (e.g. domain changed).
+	svcs, _ := api.services.List()
+	for _, svc := range svcs {
+		if svc.Source == "central" && svc.Domain != centralDomain {
+			_ = api.services.Deregister(svc.Domain)
+		}
+	}
+
+	if centralDomain == "" {
+		return
+	}
+
+	_ = api.services.Register(services.Service{
+		Domain: centralDomain,
+		Source: "central",
+		Backend: services.Backend{
+			Address: backend,
+			Type:    services.BackendHTTP,
+		},
+		Reach: services.ReachInternal,
+		TLS:   services.TLSTerminate,
+	})
+}
+
 // Reconcile runs networking reconciliation immediately. Called on startup
 // and automatically whenever a service is registered/updated/deregistered.
 func (api *API) Reconcile() {
@@ -61,17 +102,6 @@ func (api *API) reconcileNetworking() {
 		}
 	}
 
-	// Inject Central's own domain as an HTTP route (from config, not registration).
-	// Central is just another L7 service from HAProxy's perspective.
-	if d := globalCfg.Cloud.Central.Domain; d != "" {
-		centralPort := api.getRunningPort()
-		httpRoutes = append([]haproxy.HTTPRoute{{
-			Name:    "wild-central",
-			Domain:  d,
-			Backend: fmt.Sprintf("127.0.0.1:%d", centralPort),
-		}}, httpRoutes...)
-	}
-
 	// Only include L7 HTTP routes for services that have a cert.
 	certsDir := "/etc/haproxy/certs/"
 	var activeHTTPRoutes []haproxy.HTTPRoute

internal/services/manager.go

@@ -3,7 +3,7 @@
 // routing, TLS certificates, and optional public exposure via DDNS.
 //
 // Each registration is keyed by its domain — one registration per domain.
-// Central's own services (its UI, VPN, firewall) come from config, not here.
+// Central registers its own UI domain here on startup (source: "central").
 package services
 
 import (

main.go

@@ -150,10 +150,10 @@ func main() {
 		fmt.Sscanf(v, "%d", &port)
 	}
 
-	// Tell the API what port it's running on and run initial reconciliation.
-	// Must happen AFTER port is known so Central's config-driven HAProxy
-	// route points to the correct port.
+	// Tell the API what port it's running on, register Central as a service
+	// (if a domain is configured), and reconcile all networking.
 	api.SetPort(port)
+	api.EnsureCentralService()
 	api.Reconcile()
 
 	addr := fmt.Sprintf("%s:%d", host, port)