package broker

import (
	"slices"
	"testing"
)

// **The bus module's watch speaks through the runtime that carries it** (novox/hq ADR 0357): the node's
// runtime is granted the events the bus module declares, under the module's name, while the bus's own
// account keeps the snapshot API and nothing else (ADR 0235).
func TestTheRuntimeCarryingTheBusModuleMayPublishItsEventsAndTheBussAccountMayNot(t *testing.T) {
	events := []string{"bus.slow-consumer", "bus.connection-closed"}
	runtime := Principal{Kind: KindNodeTools, Node: "anchor", Module: RuntimeModule,
		Carries: []Declared{{Module: "nats", Emits: events}}}
	p, err := PermissionsFor(runtime)
	if err != nil {
		t.Fatal(err)
	}
	for _, e := range events {
		if !slices.Contains(p.Publish, "mesh.mod.nats.event."+e) {
			t.Errorf("the runtime carrying the bus module may not publish %s: %v", e, p.Publish)
		}
	}
	account := Principal{Kind: KindModule, Node: "anchor", Module: "nats", Emits: events, SnapshotsTheBus: true}
	a, err := PermissionsFor(account)
	if err != nil {
		t.Fatal(err)
	}
	for _, s := range a.Publish {
		if s == "mesh.mod.nats.event.bus.slow-consumer" || s == "mesh.mod.nats.event.bus.connection-closed" {
			t.Errorf("the bus's own account is granted %s", s)
		}
	}
}