package osupdate

import (
	"os"
	"path/filepath"
	"testing"

	"gitea.dooplex.hu/admin/felhom-agent/internal/hub"
)

// After a boot the agent has not fetched the hub's block yet; the after-boot kernel report must still carry the
// box's real ring (seen 2026-10-08: a ring-0 box's „judging" report said ring 1). Red-proof: return Block().Ring
// from kernelReportRing and the saved-block case fails with 1.
func TestKernelReportRing_BeforeFirstFetch(t *testing.T) {
	dir := t.TempDir()
	l := &Leg{PlanDir: dir}
	if got := l.kernelReportRing(); got != 1 {
		t.Fatalf("nothing fetched, nothing saved: ring %d, want 1 (the old default)", got)
	}
	l.saveBlock(&hub.WireOSUpdate{Ring: 0, Enabled: true})
	l2 := &Leg{PlanDir: dir} // a fresh daemon after the reboot: no block fetched yet
	if got := l2.kernelReportRing(); got != 0 {
		t.Fatalf("ring-0 block saved before the reboot: ring %d, want 0", got)
	}
	l2.SetBlock(&hub.WireOSUpdate{Ring: 1, Enabled: true})
	if got := l2.kernelReportRing(); got != 1 {
		t.Fatalf("a fetched block wins over the saved one: ring %d, want 1", got)
	}
	if _, err := os.Stat(filepath.Join(dir, SavedBlockFile)); err != nil {
		t.Fatalf("saved block missing: %v", err)
	}
}