package memorytool

import (
	"errors"
	"testing"
	"time"
)

func TestTokenSignerBindsConversationTaskAndExpiry(t *testing.T) {
	signer, err := NewTokenSigner([]byte("01234567890123456789012345678901"))
	if err != nil {
		t.Fatal(err)
	}
	now := time.Date(2026, 8, 28, 12, 0, 0, 0, time.UTC)
	signer.now = func() time.Time { return now }
	token, err := signer.Issue("conversation-one", "task-one", now.Add(time.Minute))
	if err != nil {
		t.Fatal(err)
	}
	claims, err := signer.Verify(token)
	if err != nil || claims.ConversationID != "conversation-one" || claims.TaskRef != "task-one" {
		t.Fatalf("claims=%+v err=%v", claims, err)
	}
	if _, err := signer.Verify(token + "changed"); !errors.Is(err, ErrInvalidToken) {
		t.Fatalf("tampered token error=%v", err)
	}
	signer.now = func() time.Time { return now.Add(2 * time.Minute) }
	if _, err := signer.Verify(token); !errors.Is(err, ErrInvalidToken) {
		t.Fatalf("expired token error=%v", err)
	}
}