package broker

import "git.novox.be/novox/mesh-sdk/go/delivery"

// The two modules that read the build seats' queues, each by name (novox/hq ADR 0525 §2, issue 1887 A8): the watchman hears
// the asks put on the seats (a plain subscription, no consumer made) to mirror each waiting ask as a pulse, and the view
// reads the shared workers' counts and the oldest waiting ask to show the backlog. Neither may publish an ask: only the
// builder and the checker ask, by their seat use. Nothing here is a wildcard over a stream or a worker.
const (
	// ViewModule is the module of the delivery view (mesh-delivery-view).
	ViewModule = "mesh-delivery-view"
)

// BuildSeatAsksHeard are the subjects the watchman subscribes to: `mesh.seat.node-build-<language>.accept.<kind>` of every
// build seat and kind (delivery.AskSubject), each by name.
func BuildSeatAsksHeard() []string {
	var out []string
	for _, lang := range delivery.AskLanguages {
		for _, kind := range delivery.AskKinds {
			if s, err := delivery.AskSubject(lang, kind); err == nil {
				out = append(out, s)
			}
		}
	}
	return out
}

// BuildBacklogReads are the API subjects the view requests: the information of each build seat's stream and of each of its
// shared workers (delivery.AskStream, delivery.AskWorker), and the message of the stream by sequence. Reads only: no
// message is pulled, none acknowledged, none published.
func BuildBacklogReads() []string {
	var out []string
	for _, lang := range delivery.AskLanguages {
		stream, err := delivery.AskStream(lang)
		if err != nil {
			continue
		}
		out = append(out, "$JS.API.STREAM.INFO."+stream, "$JS.API.STREAM.MSG.GET."+stream)
		for _, kind := range delivery.AskKinds {
			if w, err := delivery.AskWorker(lang, kind); err == nil {
				out = append(out, "$JS.API.CONSUMER.INFO."+stream+"."+w)
			}
		}
	}
	return out
}