package broker

import (
	"slices"
	"testing"

	"git.novox.be/novox/mesh-sdk/go/catalogue"
)

// The catalogue's list of the mesh's own stream names, which a module's stream may not take, is the broker's
// own list (novox/hq ADR 0363 §1): read from MeshStreams, so a stream added there cannot be forgotten there.
//
// **The names of streams the mesh no longer asserts stay reserved** (R4g, ADR 0525 clause 6): the pull requests' two check
// queues are left on the bus until a cleanup removes them, and no module may take their names meanwhile. So the catalogue
// reserves every name of the broker's own, and may reserve these retired ones beside them.
func TestTheCataloguesReservedStreamNamesAreTheMeshsOwn(t *testing.T) {
	retired := []string{"CHECKS_OTHER", "CHECKS_READY"}
	var own []string
	for _, s := range MeshStreams() {
		own = append(own, s.Name)
	}
	reserved := append([]string(nil), catalogue.MeshStreamNames...)
	slices.Sort(own)
	slices.Sort(reserved)
	var extra []string
	for _, name := range reserved {
		if !slices.Contains(own, name) {
			extra = append(extra, name)
		}
	}
	var missing []string
	for _, name := range own {
		if !slices.Contains(reserved, name) {
			missing = append(missing, name)
		}
	}
	for _, name := range extra {
		if !slices.Contains(retired, name) {
			t.Errorf("the catalogue reserves %s, which the broker neither asserts nor names retired", name)
		}
	}
	if len(missing) > 0 {
		t.Fatalf("the broker's own streams %v are not reserved by the catalogue (it reserves %v)", missing, reserved)
	}
}