package link_test

import (
	"crypto/ed25519"
	"crypto/rand"
	"errors"
	"testing"
	"time"

	"github.com/novox/mesh-controller/internal/inventory"
	"github.com/novox/mesh-controller/internal/link"
)

// A token another enrolment holds for the moment is "not now", not a refusal: the node asks again
// with the same request, and nothing is spent (novox/hq issue 083).
func TestAnEnrolmentMetByAHeldTokenIsAskedToTryAgain(t *testing.T) {
	inv := inventory.ForTest(t)
	ctx := t.Context()
	if _, err := inv.AddNode(ctx, "laptop"); err != nil {
		t.Fatal(err)
	}
	issued, err := inv.IssueToken(ctx, "laptop", time.Hour)
	if err != nil {
		t.Fatal(err)
	}
	if _, err := inv.Claim(ctx, issued.Secret, "another enrolment's key"); err != nil {
		t.Fatal(err)
	}
	public, _, err := ed25519.GenerateKey(rand.Reader)
	if err != nil {
		t.Fatal(err)
	}
	_, err = link.Enrolment{Inventory: inv}.Enrol(ctx, link.EnrolRequest{
		Node: "laptop", Secret: issued.Secret, PublicKey: public})
	if !errors.Is(err, link.ErrTryAgain) {
		t.Fatalf("an enrolment met by a held token was not asked to try again: %v", err)
	}
	// And a token that cannot be used at all is still refused outright.
	_, err = link.Enrolment{Inventory: inv}.Enrol(ctx, link.EnrolRequest{
		Node: "laptop", Secret: "not-a-token", PublicKey: public})
	if err == nil || errors.Is(err, link.ErrTryAgain) {
		t.Fatalf("a token that cannot be used was not refused outright: %v", err)
	}
}