package broker_test

import (
	"slices"
	"testing"

	"github.com/novox/mesh-controller/internal/broker"
	"github.com/novox/mesh-controller/internal/link"
)

// The facts the control plane states are named twice — in the grant that permits them and in the code
// that states them — because `link` imports `broker` and the dependency cannot go the other way. So a
// test keeps them agreeing: a subject the grant omits is refused at the moment the mesh has something
// to say, and one the grant adds that nothing states is authority nobody uses.
//
// An external test package, because it may import both while neither imports the other.
func TestTheFactsTheGrantPermitsAreTheFactsTheMeshStates(t *testing.T) {
	if broker.ControllerSeat != link.MeshControllerSeat {
		t.Fatalf("the grant is written for the %q seat and the mesh states its facts under %q",
			broker.ControllerSeat, link.MeshControllerSeat)
	}
	for _, event := range []string{link.KeyApplied, link.KeyRefused, link.KeyBuiltBefore} {
		if !slices.Contains(broker.ControllerStates, event) {
			t.Errorf("the mesh states %q and its account may not publish it", event)
		}
	}
	if len(broker.ControllerStates) != 3 {
		t.Errorf("the grant permits %v, which is more than the mesh states", broker.ControllerStates)
	}
}