Add new experimental metrics (#4)

pkg/livebox/discovery.go

@@ -0,0 +1,64 @@
+package livebox
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"strings"
+
+	"github.com/Tomy2e/livebox-api-client"
+	"github.com/Tomy2e/livebox-api-client/api/request"
+)
+
+// Interface is a Livebox Network interface.
+type Interface struct {
+	Name  string
+	Flags string
+}
+
+// IsWAN returns true if this interface is a WAN interface.
+func (i *Interface) IsWAN() bool {
+	return strings.Contains(i.Flags, "wan")
+}
+
+// IsWLAN returns true if this interface is a WLAN interface.
+func (i *Interface) IsWLAN() bool {
+	return strings.Contains(i.Flags, "wlanvap")
+}
+
+// DiscoverInterfaces discovers network interfaces on the Livebox.
+func DiscoverInterfaces(ctx context.Context, client livebox.Client) ([]*Interface, error) {
+	var mibs struct {
+		Status struct {
+			Base map[string]struct {
+				Flags string `json:"flags"`
+			} `json:"base"`
+		} `json:"status"`
+	}
+
+	if err := client.Request(
+		ctx,
+		request.New("NeMo.Intf.data", "getMIBs", map[string]interface{}{
+			"traverse": "all",
+			"flag":     "statmon && !vlan",
+		}),
+		&mibs,
+	); err != nil {
+		return nil, fmt.Errorf("failed to discover interfaces: %w", err)
+	}
+
+	if len(mibs.Status.Base) == 0 {
+		return nil, errors.New("no interfaces found")
+	}
+
+	itfs := make([]*Interface, 0, len(mibs.Status.Base))
+
+	for itf, val := range mibs.Status.Base {
+		itfs = append(itfs, &Interface{
+			Name:  itf,
+			Flags: val.Flags,
+		})
+	}
+
+	return itfs, nil
+}