//go:build integration

package link

import (
	"context"
	"testing"

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

func TestNatsAProvidersStandingReachesTheController(t *testing.T) {
	js := aBus(t)
	kept := &lockedStandings{}
	s := &Server{inbound: Nats(js), bus: OverNATS{Conn: js.Conn(), JS: js.Context()}, log: quiet()}
	if err := s.Follows(&toldAbout{}); err != nil {
		t.Fatal(err)
	}
	if err := s.Watches(kept); err != nil {
		t.Fatal(err)
	}
	ctx, stop := context.WithCancel(context.Background())
	defer stop()
	go func() { _ = s.Serve(ctx) }()
	eventually(t, "the controller's event consumer being made", func() bool {
		_, err := js.Context().ConsumerInfo("EVENTS", broker.ControllerName)
		return err == nil
	})

	for _, event := range []string{broker.ProvisionerFailing, broker.ProvisionerRecovered} {
		if _, err := js.Context().Publish("mesh.mod.keycloak.event."+event,
			[]byte(`{"consumer":"mesh_home_grafana","provider-node":"anchor","class":"credentials-rejected"}`)); err != nil {
			t.Fatal(err)
		}
	}
	// Somebody else's event under the same prefix is not the controller's to hear.
	if _, err := js.Context().Publish("mesh.mod.keycloak.event.client.created", []byte(`{}`)); err != nil {
		t.Fatal(err)
	}
	eventually(t, "both standings being kept, in order, naming the emitter", func() bool {
		got := kept.all()
		return len(got) == 2 && got[0].Module == "keycloak" && got[0].Failing && !got[1].Failing
	})
	eventually(t, "both being acknowledged and nothing else delivered", func() bool {
		info, err := js.Context().ConsumerInfo("EVENTS", broker.ControllerName)
		return err == nil && info.NumAckPending == 0 && info.Delivered.Consumer == 2
	})
}