ctp-list: adjust logic

Signed-off-by: Piotr Zaniewski <piotr@upbound.io>

cmd/up/controlplane/list.go

@@ -26,8 +26,10 @@ import (
 	"github.com/upbound/up/internal/controlplane"
 	"github.com/upbound/up/internal/controlplane/cloud"
 	"github.com/upbound/up/internal/controlplane/space"
+	"github.com/upbound/up/internal/profile"
 	"github.com/upbound/up/internal/upbound"
 	"github.com/upbound/up/internal/upterm"
+	"k8s.io/client-go/tools/clientcmd"
 )
 
 type ctpLister interface {
@@ -75,7 +77,28 @@ func (c *listCmd) AfterApply(kongCtx *kong.Context, upCtx *upbound.Context) erro
 
 // Run executes the list command.
 func (c *listCmd) Run(ctx context.Context, printer upterm.ObjectPrinter, p pterm.TextPrinter, upCtx *upbound.Context) error {
+	// find profile and derive controlplane from kubeconfig
+	profiles, err := upCtx.Cfg.GetUpboundProfiles()
+	if err != nil {
+		return err
+	}
+	po := clientcmd.NewDefaultPathOptions()
+	conf, err := po.GetStartingConfig()
+	if err != nil {
+		return err
+	}
+
+	_, _, ctp, err := profile.FromKubeconfig(ctx, profiles, conf)
+
+	if err != nil {
+		return err
+	}
+	if p == nil {
+		return nil
+	}
+
 	l, err := c.client.List(ctx, c.deriveGroup())
+
 	if controlplane.IsNotFound(err) {
 		p.Printfln("No Control planes found in %s group", c.deriveGroup())
 		return nil
@@ -89,6 +112,12 @@ func (c *listCmd) Run(ctx context.Context, printer upterm.ObjectPrinter, p pterm
 		return nil
 	}
 
+	for _, resp := range l {
+		if ctp.Name == resp.Name {
+		p.Printfln("Cannot list control from inside a controlplane, use `up ctx ..` to switch to a goup level")
+		return nil
+		}
+	}
 	return tabularPrint(l, printer, upCtx)
 }