package backup

import (
	"io"
	"log"
	"testing"
	"time"

	"gitea.dooplex.hu/admin/felhom-controller/internal/settings"
)

// R-671 (v0.272.0) — the undo copies kept by an update hold are removed when a restore lifts that hold; a
// RESTORE hold (R-379) lifts nothing and removes nothing; an app a guarded update is moving is never touched.
//
// COMPANION RED-PROOF (REPORT.md): drop the undoCopyRemover call from clearUpdateHoldAfterRestore — this test
// fails at "the lifted update hold's undo copies were left behind".
func TestR671_RestoreThatClearsAnUpdateHoldRemovesItsUndoCopies(t *testing.T) {
	sett := slice4Settings(t)
	m := &Manager{logger: log.New(io.Discard, "", 0), settings: sett}
	removed := map[string]int{}
	m.SetUndoCopyRemover(func(s string) int { removed[s]++; return 3 })
	_ = m.HoldAfterFailedUpdate("nextcloud", time.Now(), time.Now(), UpdateTierLocal)
	_ = sett.SetRestoreHold(settings.RestoreHold{Stack: "rst", At: "2026-08-22T14:00:00Z"})
	m.clearUpdateHoldAfterRestore("nextcloud")
	m.clearUpdateHoldAfterRestore("rst")
	if removed["nextcloud"] != 1 {
		t.Fatalf("the lifted update hold's undo copies were left behind (remover calls: %v)", removed)
	}
	if removed["rst"] != 0 {
		t.Fatal("a restore hold is not lifted by a restore, so nothing of it may be removed")
	}
	// an app mid-update: its copies are the live undo — never removed
	_ = m.HoldAfterFailedUpdate("moving", time.Now(), time.Now(), UpdateTierLocal)
	m.SetUpdatingCheck(func(s string) bool { return s == "moving" })
	m.clearUpdateHoldAfterRestore("moving")
	if removed["moving"] != 0 {
		t.Fatal("the undo copies of an app a guarded update is moving must never be removed")
	}
}