package web

import (
	"encoding/json"
	"net/url"
	"strings"
	"testing"
)

// R-521 controller half (operator ruling 2026-10-12, S32, `09` §3 decision 227): the household's own
// notification settings carry a lost-drive option (`storage_disconnected`), saved and sent to the hub in
// `enabled_events` exactly like the others — and ONLY when the household has it on. The hub mails a lost
// drive only when this setting carries it.
//
// RED-PROOF (REPORT.md): drop "storage_disconnected" from the single-event list in
// settingsNotificationsHandler → the "on" half fails (the option is silently not saved and not sent).
func TestR521_StorageDisconnectedOptionRoundTrips(t *testing.T) {
	eventsOf := func(t *testing.T, body map[string]json.RawMessage) []string {
		t.Helper()
		var ev []string
		if err := json.Unmarshal(body["enabled_events"], &ev); err != nil {
			t.Fatalf("enabled_events is not a list: %s", body["enabled_events"])
		}
		return ev
	}
	has := func(list []string, e string) bool {
		for _, x := range list {
			if x == e {
				return true
			}
		}
		return false
	}

	// ON: saved, sent, and the page shows it ticked.
	s, sett, hub := r922Server(t)
	s.loadTemplates()
	rr := postNotifications(t, s, url.Values{
		"notification_email":         {"household@example.hu"},
		"cooldown_hours":             {"6"},
		"event_backup_failed":        {"on"},
		"event_storage_disconnected": {"on"},
	})
	if p := sett.GetNotificationPrefs(); !has(p.EnabledEvents, "storage_disconnected") {
		t.Fatalf("on: storage_disconnected not saved (stored %v)", p.EnabledEvents)
	}
	if ev := eventsOf(t, hub.last(t)); !has(ev, "storage_disconnected") {
		t.Fatalf("on: storage_disconnected not sent to the hub (enabled_events %v)", ev)
	}
	if !strings.Contains(rr.Body.String(), `name="event_storage_disconnected" checked`) {
		t.Error("on: the saved option does not render ticked")
	}

	// OFF: the same household switches it off — not saved, not sent, not ticked.
	rr = postNotifications(t, s, url.Values{
		"notification_email":  {"household@example.hu"},
		"cooldown_hours":      {"6"},
		"event_backup_failed": {"on"},
	})
	if p := sett.GetNotificationPrefs(); has(p.EnabledEvents, "storage_disconnected") {
		t.Fatalf("off: storage_disconnected still saved (stored %v)", p.EnabledEvents)
	}
	if ev := eventsOf(t, hub.last(t)); has(ev, "storage_disconnected") {
		t.Fatalf("off: storage_disconnected still sent to the hub (enabled_events %v)", ev)
	}
	if strings.Contains(rr.Body.String(), `name="event_storage_disconnected" checked`) {
		t.Error("off: the option still renders ticked")
	}
}