Add admin dashboard at / with bearer-token overview API

internal/server/store.go

@@ -7,6 +7,7 @@ import (
 	"io/fs"
 	"os"
 	"path/filepath"
+	"sort"
 	"sync"
 	"time"
 )
@@ -25,6 +26,7 @@ type storedTunnel struct {
 	ID          string      `json:"id"`
 	Hostname    string      `json:"hostname"`
 	TokenHash   string      `json:"tokenHash"`
+	CreatedAt   string      `json:"createdAt,omitempty"`
 	Certificate *storedCert `json:"certificate,omitempty"`
 }
 
@@ -125,6 +127,7 @@ func (s *Store) createTunnel(domain string) (storedTunnel, string, error) {
 	t := storedTunnel{
 		ID:        slug(),
 		TokenHash: hashToken(token),
+		CreatedAt: time.Now().UTC().Format(time.RFC3339),
 	}
 	t.Hostname = t.ID + "." + domain
 	s.mu.Lock()
@@ -141,6 +144,18 @@ func (s *Store) get(id string) (storedTunnel, bool) {
 	return t, ok
 }
 
+// Tunnels returns every tunnel, sorted by hostname (for the admin dashboard).
+func (s *Store) Tunnels() []storedTunnel {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	out := make([]storedTunnel, 0, len(s.data.Tunnels))
+	for _, t := range s.data.Tunnels {
+		out = append(out, t)
+	}
+	sort.Slice(out, func(i, j int) bool { return out[i].Hostname < out[j].Hostname })
+	return out
+}
+
 // bindCSR records the issued certificate for the tunnel. The CSR is kept so a
 // renewal (and a resumed provision) can be answered without a new bind.
 func (s *Store) bindCertificate(id string, cert storedCert) error {