package broker

import (
	"strings"
	"testing"

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

// 1945/AC1: a node's composition bucket keeps five revisions of a key and is named for its node; the bucket of digests
// likewise; a node name a subject would widen is refused.
func TestTheCompositionBuckets(t *testing.T) {
	cfg, err := ComposedConfig("ace")
	if err != nil || cfg.Bucket != "composed-ace" || cfg.History != 5 {
		t.Fatalf("ComposedConfig(ace) = %+v, %v", cfg, err)
	}
	if d := ComposedDigestsConfig(); d.Bucket != delivery.ControllerComposedBucket || d.History != 5 {
		t.Errorf("ComposedDigestsConfig = %+v", d)
	}
	if _, err := ComposedConfig("a.b"); err == nil {
		t.Errorf("a dotted node got a bucket")
	}
}

// 1945/AC1: a node-engine reads its own compositions and its own wants and nothing of another node's, nor the digests;
// the controller writes a node's bucket by its own subjects.
func TestANodeReadsOnlyItsOwnCompositions(t *testing.T) {
	reads, err := ComposedReads("ace")
	if err != nil {
		t.Fatal(err)
	}
	all := strings.Join(reads, " ")
	for _, want := range []string{"KV_composed-ace", "$KV.mesh-delivery-assigner_wants.want.ace.>"} {
		if !strings.Contains(all, want) {
			t.Errorf("a node-engine of ace cannot reach %s: %v", want, reads)
		}
	}
	for _, never := range []string{"composed-g14", delivery.ControllerComposedBucket, "$KV.composed-ace", "want.*", "want.>"} {
		if strings.Contains(all, never) {
			t.Errorf("a node-engine of ace is granted %s: %v", never, reads)
		}
	}
	if w, err := ComposedWrites("ace"); err != nil || w != "$KV.composed-ace.>" {
		t.Errorf("ComposedWrites(ace) = %q, %v", w, err)
	}
	if _, err := ComposedReads("a*"); err == nil {
		t.Errorf("a node name with a wildcard was granted")
	}
}