package settings

import (
	"io"
	"log"
	"os"
	"path/filepath"
	"testing"
)

// v0.264.0 — the one-time, ADD-ONLY seed of the two update event types into a household's stored prefs.
//
// COMPANION RED-PROOF (REPORT.md): drop the seedAppUpdateEvents call from Load — the first assertion fails.
func TestSeedAppUpdateEvents_AddOnlyOnce(t *testing.T) {
	p := filepath.Join(t.TempDir(), "settings.json")
	if err := os.WriteFile(p, []byte(`{"notifications":{"email":"h@example.hu","enabled_events":["backup_failed"]}}`), 0o600); err != nil {
		t.Fatal(err)
	}
	lg := log.New(io.Discard, "", 0)
	s, err := Load(p, lg)
	if err != nil {
		t.Fatal(err)
	}
	ev := s.Notifications.EnabledEvents
	has := func(list []string, x string) bool {
		for _, e := range list {
			if e == x {
				return true
			}
		}
		return false
	}
	if !has(ev, "backup_failed") || !has(ev, "app_update_undone") || !has(ev, "app_update_held") {
		t.Fatalf("the household's choice must be kept and both types added, got %v", ev)
	}
	// The household opts out of one; a restart must NOT add it back.
	s.Notifications.EnabledEvents = []string{"backup_failed", "app_update_held"}
	if err := s.save(); err != nil {
		t.Fatal(err)
	}
	s2, err := Load(p, lg)
	if err != nil {
		t.Fatal(err)
	}
	if has(s2.Notifications.EnabledEvents, "app_update_undone") {
		t.Errorf("a later opt-out must stick — the seed runs once, got %v", s2.Notifications.EnabledEvents)
	}
}